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Qatar’s Solar Power Expansion: A Path to Renewable Energy Growth  SolarQuarter
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The installation is expected to offset a significant portion of daytime power consumption
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Lukenya Schools in Athi River has commissioned a solar power plant as the institution seeks to reduce electricity costs, minimise reliance on the national grid and guarantee uninterrupted power.
The project, installed by Safer Power Limited, comprises a 40.92-kilowatt-peak (kWp) solar photovoltaic system, a 40-kilowatt alternating current hybrid inverter and an 80-kilowatt-hour energy storage system.
The installation is expected to offset a significant portion of the school’s daytime electricity consumption while providing battery-backed power during outages.
Speaking during the commissioning, Lukenya Schools Director Mutheu Kasanga said the investment was a step towards achieving energy independence.
“Today we have commissioned a solar plant and hope to move completely out of the grid,” Kasanga said.
She noted that the institution had experienced persistent challenges with unreliable electricity supply, particularly because of its location in a rural setting, forcing it to invest in backup systems to keep operations running.
“Some of the challenges we have had with the grid being a rural school are quite significant. It takes a lot to resolve some of the issues, and we have had to invest in the past in a backup system when we have grid failure,” she said.
Kasanga said the school’s boarding status meant it required a dependable electricity supply throughout the day and night to support academic activities, accommodation and essential services.
She added that the new system would provide greater certainty during prolonged outages, particularly during rainy weather and the examination season.
The reliable supply is also expected to protect food stored in freezers and reduce losses caused by power interruptions, which have previously forced the school to use food earlier than scheduled to prevent it from spoiling.
Safer Power Group Chief Executive Officer Dalmus Mbai said the project demonstrated how renewable energy could help African institutions address persistent electricity challenges while creating a better environment for learners.
“When you look at the problems facing Africa, 90 per cent of those are related to power,” Mbai said.
Lukenya Schools founder Kasanga Mulwea described the commissioning as a major milestone for the institution, recalling the challenges of securing electricity when the school was established more than three decades ago.
“Today I am the luckiest person. We have switched from one system to another,” Mulwea said.
She recalled that 34 years ago, she had to pay commercial rates to extend electricity infrastructure from the main road to the school.
“Thirty-four years ago, the troubles we had, I had to pay commercial rates to get power from the road to here,” she said.
Mulwea noted that the cost of securing electricity infrastructure in the past had been substantially higher than the investment in the new solar project.
The installation marks a shift towards renewable energy at the institution, with the school seeking to improve operational efficiency, strengthen energy security and reduce its exposure to disruptions in the national grid.

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Oswal Pumps Announces INR 456 Crore Investment Plan for 1.2 GW TOPCon Solar Cell Manufacturing Facility  SolarQuarter
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The brother’s system has no battery backup and produces about $20 in electric bills.
Photo Credit: iStock
With monthly electricity costs nearing $600, a homeowner in New Jersey turned to Reddit to weigh whether solar still makes sense with a steep east-west roof and a dormer that shades part of one side.
Part of the appeal is that the poster’s brother in Texas installed panels, skipped battery storage, and now pays about $20 for electricity.
The Reddit post on r/solarenergy framed the decision around a sharp contrast. The homeowner said a brother in Texas was happy with solar and very low bills, while their own costs in New Jersey had climbed enough for them to write, “My electric bill has almost hit $600 this month, so maybe it’s time to consider installing solar.”
The poster also described the roof concerns in detail, writing: “My roof is fairly steep and it faces east and west. My brother has a north/south facing roof. Even worse, I have a dormer on the east side that shades half of that side of the roof from the sun.”
Want to go solar but not sure who to trust? EnergySage has your back with free and transparent quotes from fully vetted providers in your area.
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One user who said they also live in New Jersey and have the same roof orientation argued that it “still pays,” adding they “can say without a doubt that it is an amazing investment.” 
Concern that anything less than a perfect roof will wipe out the financial benefits is a common reason people hesitate to install rooftop solar. In this case, the homeowner was reacting to a power bill that had skyrocketed.
For homeowners facing that kind of increase, going solar is one of the best ways to save money on home energy. You can try EnergySage to get free solar installation estimates and compare quotes.
Several factors separate the Texas example from the New Jersey situation. The brother’s system has no battery backup and produces about $20 in electric bills, while the New Jersey homeowner is considering solar on a steep east-west roof with shading from a dormer — differences that can affect output, installer pricing, and payback timelines even before state-specific incentives are considered.
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To get started, just answer a few questions about your home — no phone number required. Within a day or two, EnergySage will email you the best local options for your needs, and their expert advisers can help you compare quotes and pick a winner.
For a homeowner with roof complications like these, comparison shopping becomes especially important. With EnergySage’s help, the average person can save up to $10,000 on solar purchases and installations. That kind of marketplace comparison can be particularly useful when shading, roof pitch, and panel placement all influence what installers recommend and charge.
Tools can also make the state-by-state picture easier to understand. EnergySage’s solar map shows the average cost of a home solar panel system by state, along with details on solar panel incentives for each state. Together, those resources can help homeowners get the best price for rooftop solar panels and access available incentives.
Battery storage is another part of the equation, especially since the original poster noted that their brother doesn’t have backup power. Adding battery storage to a solar setup is one of the best ways to protect your home during outages, save money on energy, and go off-grid. Homeowners interested in home battery storage options, including competitive installation estimates, can also explore EnergySage.
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AI learns how buildings shade themselves to predict facade solar power
As cities run out of roof space, the next great solar frontier is vertical. Building-integrated photovoltaics, or BIPV, turn walls into power plants, but predicting how much electricity a facade will actually produce has always been fiendishly difficult. Unlike a rooftop array with a single tilt and orientation, a facade experiences wildly different solar conditions from floor to floor: lower storeys may sit in the shadow of neighbouring buildings while upper floors bask in open sky. A new study published in Results in Engineering tackles this problem head-on with an occlusion-aware machine learning framework that predicts annual facade energy yield across climates, and its results suggest designers may soon be able to screen thousands of facade configurations in seconds.
The research team, led by Xinsen Wang and colleagues, assembled a hybrid dataset of 12,080 BIPV facade cases spanning 62 cities in 41 countries and four major Köppen climate groups. The data combine weather-driven physical simulations using the pvlib solar engineering library, converted records from PVsyst and other photovoltaic references, and an independent compilation of real building projects. After rigorous quality control that enforced monthly-to-annual energy conservation and excluded saturated shading cases, the final dataset covers three module families—polycrystalline, monocrystalline and thin-film—and installation heights ranging from roughly one metre to nearly 45 metres. The prediction target is deliberately practical: annual electricity generation per square metre of active PV area, expressed in kilowatt-hours per square metre per year, which places configurations of different sizes and technologies on a common productivity footing.
The real innovation lies in how the framework represents occlusion geometry. Each facade configuration is described not just by its orientation and climate, but by a set of nine height-and-shading descriptors: installation height, floor index, obstruction height, horizontal separation, obstruction elevation angle, average shading fraction, signed clearance, positive clearance and relative height. The geometry works by comparing the sun’s apparent elevation against the angle subtended by a neighbouring obstruction, but only when the sun lies within the facade’s front-facing sector. Solar positions are computed hourly using the Reda-Andreas algorithm, and direct beam irradiance is screened out whenever the sun dips below the obstruction angle. A separate time-weighted shading fraction captures how much of the front-facing daylight hours are geometrically blocked, and engineered features multiply annual irradiation by the unshaded time fraction to approximate the resource that actually reaches the modules.
With the feature matrix in place, the team benchmarked nine machine learning models under a common protocol, ranging from a simple Ridge regression baseline to modern gradient-boosted ensembles including XGBoost, LightGBM and CatBoost. The clear winner was ExtraTrees, an extremely randomized tree ensemble, which achieved a test coefficient of determination of 0.856 and a mean absolute percentage error of 9.57 percent under a city-grouped holdout split—making it the only candidate to break the ten percent error barrier. In an additional five-fold city-grouped evaluation covering every record, ExtraTrees performed even better, with a pooled error of just 7.10 percent and a coefficient of determination of 0.907. The linear and AdaBoost baselines trailed far behind, confirming that the nonlinear interactions among climate, azimuth, module type and shading geometry demand tree-ensemble machinery.
Accuracy on held-out data is one thing; transferring to unseen cities and climates is another. The validation ladder therefore included leave-one-city-out tests, in which the model must predict for an entire city it has never seen, and even leave-one-climate tests that withhold whole climate groups. Under the ExtraTrees protocol, leave-one-city-out prediction achieved a pooled error of 6.95 percent. Withholding complete climate groups revealed a telling gradient: tropical climates were easiest to predict at 7.18 percent error, while continental climates proved hardest at just over 15 percent. The authors note that much of this apparent difficulty stems from a small-denominator effect—low-yield configurations show larger percentage errors but smaller absolute errors—so the continental penalty is less alarming than it first appears. Removing latitude from the feature set, meanwhile, nearly doubled the pooled error, underscoring how much composite geographic and solar-path information that single variable carries.
To disentangle what each feature block actually contributes, the researchers ran paired ablation experiments on identical data folds. Climate-only models failed spectacularly, with errors above 33 percent. Adding facade and module information cut the error roughly in half, and introducing average shading slashed it again to around 7.5 percent. Interestingly, adding the full explicit obstruction geometry on top of average shading yielded almost no further gain—a difference of just 0.016 percentage points, with a confidence interval spanning zero. The full engineered set, however, did deliver statistically significant improvements of roughly 0.4 to 0.5 percentage points over reduced variants. The lesson is subtle: average shading already encodes much of the height information, but the combined system of geometry, effective irradiation and module characteristics is what truly drives accuracy.
Interpretability came through Shapley additive explanations, or SHAP, which decompose each prediction into per-feature contributions. Across the nine models, latitude, facade azimuth, module type and average shading repeatedly emerged as the dominant drivers, with the ExtraTrees analysis ranking thin-film module encoding, latitude and azimuth as its top three features. Spline-smoothed dependence curves located zero crossings—for example, average shading contributions flip sign near a shading fraction of about 0.31, and obstruction-angle crossings appear near 20.5 and 58.1 degrees. Crucially, the team tested whether these attribution rankings were stable: refitting the model across five outer city folds produced importance-rank correlations between 0.973 and 0.995, suggesting the identified design priorities are robust rather than artifacts of a single fit.
The framework was then confronted with reality in Hohhot, China, on a real south-facing facade instrumented across five floors with three equal-power module technologies: polycrystalline silicon, cadmium telluride and monocrystalline silicon. Against a pvlib physical reference for the annual case, the model achieved 10.38 percent error with a coefficient of determination of 0.872. For April and May field measurements, seasonally allocated predictions matched observations with 7.28 percent error, and all floor-module comparisons fell within a ten percent envelope. Measured yield climbed steadily with height, from about 2.49 kilowatt-hours per kilowatt-peak per day on the first floor to 3.22 on the fifth, and the predictions tracked this vertical gradient closely. Notably, the model preserved floor ordering far more reliably than module ordering, hinting that in real buildings, choosing the right floor matters more than agonizing over equal-power module choices.
The engineering payoff was quantified through candidate-screening and timing experiments. Across twelve city-excluded selection tasks combining four weather contexts with three obstruction scenarios, the surrogate achieved a mean reference-based selection loss of just 2.34 percent, compared with 7.81 percent for a coarse resource-shading score, and it picked the reference-optimal alternative in seven of twelve tasks. Timing tests showed that evaluating 1,000 candidates takes under two seconds even in a cold-start workflow—roughly five times faster than the physical reference—and over twenty times faster once weather data and models are cached. Single queries, however, remain slower than direct physical calculation, so the speed advantage is fundamentally a batch-screening benefit.
The authors are candid about limitations: the current geometry uses single-point hourly shading without obstacle width, multiple overlapping buildings or partial module shading, and a sensitivity experiment showed that simply changing the geometric representation can shift reference yields by up to 65 percent for narrow obstructions. Complex urban canyons will still need LiDAR, GIS or full building models for detailed evaluation. Yet the framework’s core message stands: by folding climate, floor-level obstruction geometry and module technology into one interpretable, transfer-tested model, facade solar assessment moves from aggregate resource estimation to genuine configuration comparison. For architects weighing which floors of a renovation deserve PV cladding, that could mean the difference between a facade that merely looks green and one that actually earns its keep.
Subject of Research: Occlusion-aware machine learning for climate-adaptive prediction of building-integrated photovoltaic facade energy yield
Article Title: Occlusion-aware machine learning for climate-adaptive BIPV facade yield prediction
Article References: Wang, X., Aoqier, B., Liu, Y., Li, G., & Xu, G. (2026). Occlusion-aware machine learning for climate-adaptive BIPV facade yield prediction. Results in Engineering, 32, Article 113363. https://doi.org/10.1016/j.rineng.2026.113363
Image Credits: AI Generated
DOI: 10.1016/j.rineng.2026.113363
Keywords: building-integrated photovoltaics, BIPV, machine learning, facade solar energy, shading geometry, ExtraTrees, SHAP, cross-city transfer, pvlib, urban solar potential, energy yield prediction, Köppen climate groups
News Source: Denise Maddox. (October 13, 2026). AI learns how buildings shade themselves to predict facade solar power. Scienmag.
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Yomiuri: Japanese Firms Speed Up Work on Perovskite Solar Cell Mass Production to Close Gap on China  MarketWatch
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William Anderson is the Assignment Desk Editor for Action News Now.
He can be reached at wanderson@actionnewsnow.com 
BUTTE COUNTY, Calif. – Butte County residents who have any unwanted solar panels now have a free way to recycle them through a new pilot program that is being launched.
Butte County Public Works, in partnership with the California Product Stewardship Council, is offering residential solar panel recycling drop-off on select Thursdays and Fridays over the remainder of October.
The program will take place at the Neal Road Recycling and Waste Facility, located at 1023 Neal Road in Paradise.
Drop-off dates for the program are scheduled for October 15, 16, 22, 23, 29 and 30.
Appointments are required, and each household may submit only one registration.
The program is open to Butte County residents, and all solar panels must come from within the county.
The pilot program is funded by a $50,000 Household Hazardous Waste grant awarded to Butte County in February 2026.
Residents who are interested in the program can register at surveymonkey.com/r/ButteSolarCollection.
For more information, visit https://www.buttecounty.ca.gov/2306/NRRWF-Events.

William Anderson is the Assignment Desk Editor for Action News Now.
He can be reached at wanderson@actionnewsnow.com 
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During its recent 2026 Solar Analyst Day on 6 October, TOYO Co., Ltd. (TOYO) provided key updates on its U.S. manufacturing operations, coinciding with the ribbon-cutting ceremony for its module expansion in Humble, Texas.
While the presentation largely echoed the company’s first-half 2026 financial results, it offered valuable insight into management’s perspective on the broader U.S. solar landscape. Specifically, TOYO highlighted that operational U.S. module capacity has reached roughly double the projected 43 GW of domestic annual demand. As a consequence, the United States no longer requires additional module capacity.
This market assessment likely serves, in part, to explain why TOYO is bypassing further U.S. module expansions. It also contextualises why the broader Abalance/TOYO/VSUN cell production strategy has migrated so rapidly from Vietnam to Ethiopia, and ultimately directly into the United States.
While a detailed critique of the global manufacturing strategy across Abalance, VSUN, and TOYO is worth revisiting in the coming months, management’s commentary cuts directly to the heart of a much larger industry unknown: exactly how much domestic production the United States actually needs over the next decade.
For the past two decades, having a precise outlook on U.S. solar module shipments was rarely essential, serving primarily as a tool for tracking general market trends. Because the United States lacked a domestic supply base capable of accounting for the majority of its module consumption, market sizing and forecasting were largely academic exercises. Aside from First Solar, forecasting was largely a matter of calculating exactly how many gigawatts would be imported into the country, particularly from Southeast Asia.
The emergence of significant, silicon-based domestic module production since 2023 demands a new level of scrutiny regarding U.S. forecasting methodologies. While TOYO’s reliance on data suggesting a flat 43 GW of annual demand through 2031 might seem minor, investors base major capital decisions on exactly this type of narrative. Consequently, the need for a radical overhaul of how we calculate U.S. module production requirements over the next decade carries far higher stakes than ever before.
To suggest that the U.S. does not require any additional module capacity is similarly misplaced and risks sending the wrong signal to outside observers. The critical question today is not about nameplate capacity alone, but rather actual production requirements mapped against dynamic forward forecasts.
U.S. utility-scale module demand over the next decade will be aggressively driven by massive solar farm deployments designed to power skyrocketing load growth from data centres and artificial intelligence infrastructure. Consequently, future production forecasts would be far more accurate if built from a bottom-up analysis of domestic module manufacturers’ contracted pipelines—ultimately the most valid metric to use under these rapidly changing market conditions.
The figure above, taken from the new release of the Solar Manufacturing USA Quarterly report, illustrates this bottom-up pipeline analysis through the end of 2028, with projected production volumes segmented by key regional manufacturing hubs across the United States.
Moving forward, individual domestic module manufacturers will make targeted, independent judgments regarding capacity additions to satisfy their own specific project pipelines. Consequently, total U.S. solar capacity and actual production volumes will likely be determined by a bottom-up aggregation of these corporate pipelines, where a select group of 10 to 20 key suppliers effectively dictates a production-driven market trajectory.
Over the coming months, I intend to explore this pivotal issue in greater detail. Accurately forecasting this domestic trajectory is critical for mapping out forward demand across the upstream ingot, wafer, and cell production segments. Ultimately, this goes far beyond simply quantifying domestic manufacturing output—it underpins the massive amounts of capital that must be injected into the U.S. manufacturing sector over the next decade.
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Band Alignment Trick Pushes Lead-Free Perovskite Solar Cells Toward 27% Efficiency
Lead-free perovskite solar cells have long promised a cleaner future for photovoltaics, but translating that promise into competitive efficiency has proven stubbornly difficult. Now, a computational study from researchers at Maulana Azad National Institute of Technology in Bhopal, India, suggests that one of the most important levers may be hiding at the interface between the light-absorbing material and the layer that extracts holes from it. In a paper published in Scientific Reports, Sankarshan Arane and Piyush Kumar Patel report a systematic numerical investigation of how the valence band offset at the interface between a hole transport layer and the all-inorganic double perovskite Cs2PdBr6 shapes nearly every aspect of device behaviour, from electrostatics to recombination to ultimate power output.
Cs2PdBr6 has attracted significant attention in the photovoltaic community because it sidesteps two of the most persistent criticisms levelled at conventional lead-halide perovskites. As an all-inorganic compound, it avoids the volatility problems associated with organic components, and as a lead-free material it eliminates the toxicity concerns that have complicated commercialisation. The material also brings genuinely promising optoelectronic properties to the table. Yet a perovskite absorber cannot deliver electricity on its own. It must be sandwiched between selective contacts that shepherd electrons and holes in opposite directions, and the quality of those contacts, particularly their energetic alignment with the absorber, often determines whether a theoretically excellent material becomes a practically excellent cell.
The Indian team focused on a parameter that is easy to state but notoriously tricky to optimise: the valence band offset, or VBO, which is the energy difference between the valence band edge of the hole transport layer and that of the absorber. When the absorber’s valence band sits above the transport layer’s, the alignment is described as a cliff; when it sits below, the alignment forms a spike. The magnitude matters as much as the sign. A small offset may fail to block the wrong carriers, while an excessive one can create a barrier that impedes the very carriers the layer is meant to collect. Using the widely trusted one-dimensional solar cell capacitance simulator SCAPS-1D, developed at Ghent University, the authors swept across hole transport materials spanning cliff-type alignments, an intermediate spike regime, and excessive spike-type configurations.
The central finding is a strong non-monotonic dependence of performance on the valence band offset. In other words, more of a good thing is not better. Devices with cliff-type alignments suffered from weak interfacial electric fields, leaving carrier extraction to diffusion alone. Diffusion-limited transport is a slow and lossy way to move photogenerated holes across an interface, and the simulations showed that it leads to increased interfacial recombination, in which electrons and holes annihilate each other at the junction instead of contributing to current. Every recombined pair is energy lost, and the cliff geometry quietly multiplies those losses.
At the other extreme, large positive valence band offsets produced their own pathology. Rather than helping, an excessive spike induces carrier accumulation at the interface and erects a transport barrier that holes must struggle to surmount. The result is again degraded performance, though for the opposite reason. The sweet spot lies in between: a balanced positive VBO generates an optimised depletion field at the junction, an internal electric field that actively assists drift transport of holes toward the contact while simultaneously suppressing the interfacial recombination that plagues cliff-type designs. The physics is elegant in its symmetry, with too little energetic separation starving the interface of useful field and too much separation choking the traffic it is meant to accelerate.
Among the hole transport materials examined, vanadium pentoxide, V2O5, emerged as the clear winner. With a valence band offset of plus 0.3 electron volts relative to the Cs2PdBr6 absorber, V2O5 sits squarely in the optimised intermediate spike regime. The simulated device built around this contact delivered a power conversion efficiency of 27.48 percent, with an open-circuit voltage of 1.26 volts, a short-circuit current density of 25.1 milliamperes per square centimetre, and a fill factor of 87.3 percent. For a lead-free, all-inorganic perovskite architecture, those are striking numbers, and they place the hypothetical device well within the range of the best lead-based perovskite cells reported experimentally.
The study went beyond headline efficiency figures to examine how the optimised alignment changes the spectral response of the device. Quantum efficiency analysis revealed that engineering the valence band offset enhances long-wavelength carrier collection by extending the effective drift region across the bulk of the absorber. This matters because long-wavelength photons generate carriers deeper inside the material, where a purely diffusion-based collection mechanism struggles to reach before recombination intervenes. A stronger, better-placed depletion field effectively widens the zone from which carriers can be pulled out intact, allowing red light that would otherwise be wasted to contribute to the photocurrent.
What makes the work notable is its methodical framing of interface energetics as a design variable rather than an afterthought. Much of the perovskite literature concentrates on the absorber itself, refining composition and crystallinity, while the contacts are chosen from a menu of established organic and inorganic transport materials. The Bhopal study argues that the choice of hole transport layer should be made with the band alignment of the specific absorber in mind, since the same material can behave very differently when paired with different perovskites. For Cs2PdBr6 specifically, the results provide a concrete target: hole transport layers with a moderate positive valence band offset around a few tenths of an electron volt.
There are, of course, the usual caveats that accompany simulation-based studies. SCAPS-1D solves the coupled equations of carrier transport and Poisson electrostatics for an idealised one-dimensional device stack, and its predictions depend on the material parameters fed into it, some of which for Cs2PdBr6 are still being refined by experimental measurement. Real devices also face challenges that a one-dimensional model cannot capture, including film morphology, pinholes, chemical reactions at interfaces, and long-term degradation. The authors themselves describe the work as a numerical investigation, and the acknowledged purpose of the SCAPS package, developed by Professor Marc Burgelman and colleagues at Ghent University, is precisely to guide experimental design by narrowing the parameter space before fabrication begins.
Even so, the implications are broad. Lead-free double perovskites remain one of the most compelling candidates for sustainable photovoltaics, and the finding that a single interfacial parameter can swing simulated efficiency so dramatically offers a clear and inexpensive route to improvement. If experimentalists can confirm that pairing Cs2PdBr6 with hole transport materials such as V2O5, or with other layers engineered to a similar offset, reproduces even a fraction of the predicted gains, the study could mark a meaningful step toward high-performance solar cells that are both efficient and free of lead. In a field where every percentage point of efficiency brings commercial viability closer, the message that the interface deserves as much attention as the absorber is one the photovoltaic community is likely to take seriously.
Subject of Research: Valence band offset engineering at the hole transport layer/Cs2PdBr6 interface in lead-free double perovskite solar cells
Article Title: Numerical investigation of valence band offset at the HTL/Cs2PdBr6 interface for high-performance double perovskite solar cells
Article References: Arane, S., & Patel, P. K. (2026). Numerical investigation of valence band offset at the HTL/Cs2PdBr6 interface for high-performance double perovskite solar cells. Scientific Reports. https://doi.org/10.1038/s41598-026-71884-6
Image Credits: AI Generated
DOI: 10.1038/s41598-026-71884-6
Keywords: perovskite solar cells, Cs2PdBr6, double perovskites, valence band offset, hole transport layer, band alignment, lead-free photovoltaics, SCAPS-1D, interfacial recombination, V2O5, power conversion efficiency, carrier transport
News Source: Denise Maddox. (October 13, 2026). Band Alignment Trick Pushes Lead-Free Perovskite Solar Cells Toward 27% Efficiency. Scienmag.
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Delhi launches portal for rooftop solar panels, targets 2.3 lakh households  India Today
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Investigators at the Massachusetts Institute of Technology have determined that renewable portfolio standards and large-scale renewable generation are not linked to elevated household power rates in the United States, whereas rooftop solar is tied to steeper prices, as reported by pv magazine. The conclusions stem from a working paper authored by Fischer J. Espiritu Argosino and Christopher R. Knittel of the MIT Center for Energy and Environmental Policy Research.
The pair constructed a state-utility panel covering 1998 through 2023 that ties together residential rates, the severity of renewable portfolio standards, generation blends and utility expenditures, relying on information from the US Energy Information Administration, the Federal Energy Regulatory Commission and Lawrence Berkeley National Laboratory.
Applying a two-way fixed effects regression model that adjusts for unobserved variations across years and among states, the authors found that renewable portfolio standards exert essentially no influence on prices, while utility-scale renewables show a modest connection to cheaper prices. Utility-scale solar especially demonstrated a strong association with reduced prices.
According to the paper’s regression coefficients, which gauge generation shares against coal, a 10-percentage-point gain in utility-scale solar’s portion of generation corresponds to residential prices slightly more than 8% lower. A 5-percentage-point gain in rooftop solar’s portion corresponds to prices about 16% higher. The authors warned that these outcomes are correlations and indicated that subsequent research will employ more rigorous econometric methods to bolster the causal reading of the estimates.
The researchers proposed one rationale for the utility-scale finding: sizable solar installations might alleviate network congestion and exert downward pressure on overall generation expenses since they need no fuel inputs. A second model, which additionally adjusts for variations among utilities, revealed utility-scale solar strongly tied to reduced transmission, distribution and total operation and maintenance costs.
Regarding rooftop solar, the researchers proposed that tariff design might partially account for the result. They observed that existing rate structures in certain states transfer fixed costs connected to rooftop solar from system owners to other ratepayers, meaning those lacking rooftop solar frequently subsidize those who possess it via an extra volumetric rate.
Rooftop solar also showed a strong correlation with elevated distribution operation and maintenance costs. The researchers attributed this to the distribution network having been built without bidirectional power flows in mind.
CEEPR does not subject working papers to peer review before posting them. The researchers stated that policymakers can achieve an affordable energy future by enhancing the integration of low-cost renewables while adopting more equitable cost recovery approaches.
A June 2025 study from Lawrence Berkeley National Laboratory headed by Ryan Wiser arrived at a comparable conclusion regarding utility-scale renewables, discovering that the approximately 75% of US utility-scale wind and solar constructed outside renewable portfolio standard programs had no widely apparent upward impact on retail prices.
The rooftop solar result contributes to a longstanding conflict over cost-shifting in California. The California Public Utilities Commission’s Public Advocates Office has calculated an $8.5 billion cost shift from rooftop solar customers to other ratepayers. A 2025 report by M.Cubed Consulting and the California Solar and Storage Association determined instead that rooftop solar produced a $1.5 billion net benefit for all California ratepayers. Solar proponents have likewise contended that growing transmission and distribution expenditures are a bigger factor behind rate hikes.
The researchers detailed their results in a paper titled Renewables and Electricity Affordability: Untangling Correlation from Causation, issued as MIT CEEPR Working Paper 2025-22.
This report provides an in-depth analysis of the Solar Panels market in the United States, covering market size, growth trajectory, demand structure, supply capability, trade flows, pricing, competitive landscape, and forecast to 2035.
The study is designed for manufacturers, distributors, importers, exporters, investors, procurement teams, advisors, and strategy teams that need a consistent, data-driven view of market dynamics and a transparent analytical definition of the product scope.
This report covers photovoltaic (PV) solar panels, which are devices that convert sunlight directly into electricity. It encompasses the global market for finished modules, including all major product technologies and form factors designed for a wide range of end-use applications.
The report combines the standard market-statistics backbone with strategic chapters that are useful for commercial planning, sourcing decisions, market entry, competitor monitoring, and portfolio prioritization.
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Supermarket rooftop salad garden in Berlin
https://www.theguardian.com/environment/2026/sep/11/supermarket-salad-rooftop-garden-berlin
Integrating agriculture into European urban landscapes matters: A systematic assessment
“Urban agriculture can supply 28% of the vegetable demand for 190M European residents.”
https://www.sciencedirect.com/science/article/pii/S2210670726003094
City scale study: A large share of Berlin’s vegetable consumption can be produced within the city
https://www.sciencedirect.com/science/article/abs/pii/S2210670722006679
97% Food waste recycling in South Korea, NYC following their model
https://www.bbc.com/future/article/20260916-new-york-has-a-food-waste-problem-south-korea-has-already-solved-it
If you hit a paywall, try https://archive.ph/rmuNs
Living sea walls – mariculture can be very productive
https://www.bostonharbornow.org/stone-living-lab-living-seawalls-panels-installed-first-in-north-america/
https://stonelivinglab.org/news-article/living-seawalls-one-year-update/
hat tip WCVB Chronicle 9/18/26
“French agrivoltaic trials cut water loss, lift maize yields by 19.6%”
https://www.pv-magazine.com/2026/09/18/french-agrivoltaic-trials-cut-water-loss-lift-maize-yields-by-19-6/
Conscious Food Systems Alliance
https://consciousfoodsystems.org/
September 2026 summit
https://consciousfoodsystems.org/bhutan-summit-2026/
China’s agricultural drones
https://cleantechnica.com/2026/09/20/china-agricultural-drones-30-times-us/
Native plants below solar panels can increase insect and especially native bee populations and benefit local agriculture
https://www.ecoticias.com/en/two-minnesota-solar-farms-turned-the-ground-beneath-their-panels-into-habitat-and-native-bee-abundance-rose-more-than-20-fold/36680/
Editorial Comment: this is not agrivoltaics but a solar farm where there are no harvestable crops planted below the solar panels
hat tip to Lee West @whodat35.bsky.social
Solar farms reducing dust pollution in China – again not agrivoltaics but environmental cobenefits nonetheless
https://phys.org/news/2026-09-solar-farms-generate-energy-pollution.html
hat tip @robertferry.bsky.social
Farmers and Climate Change: Agricultural Adaptation in an Age of Rural Polarization by Margiana Petersen-Rockney
YALE UNIVERSITY PRESS ISBN-10: ‎ 0300282257; ISBN-13: ‎ 978-0300282252)
Editorial Comment: Seems like a timely book
NYC’s Lower East Side gardens
https://gardendistrictnyc.greenmap.org/
hat tip Wendy Brawer who has been doing Green Maps for decades now
Editorial Comment: I remember the beginnings of the urban gardening movement in NYC and Boston back in the 1970s. For me, it was a direct outgrowth of the antiwar movement, as were food and other consumer coops.
Rose-colored solar panels for agrivoltaics – “pink houses” go solar as vegetal photosynthesis doesn’t use red light 
https://www.linkedin.com/posts/prspeak-worldwide_what-if-a-farm-could-produce-vegetables-and-activity-7512937499065823233-LgRb
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$31m boost for robots to speed up solar farm builds  InnovationAus.com
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India wastes 4% of solar power amid power shortages in July, August, report shows  Reuters
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Posted on Oct 13, 2026
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MR Wind S.r.l., a company that has been active in the market for years with a focus on developing renewable energy initiatives, and its strategic partners have sold 100% of the share capital of three corporate vehicles holding as many ready-to-build photovoltaic projects, with a total capacity of about 5 MW, located in Campania, to a well-known independent renewable energy producer, active in developing sustainable photovoltaic plants throughout Italy.
The transaction was promoted and supported by LinkeGreen, a matchmaking company between developers and investors in the utility-scale renewable plant market, both greenfield and brownfield. LinkeGreen followed the parties throughout the entire negotiation process, from the meeting of supply and demand to the signing of the acquisition agreements.
MR Wind S.r.l. and its strategic partners were assisted by BIP Law & Tax, which supported the sellers in the negotiation of the related contractual documentation with a team made up of Equity Partner Marco Muscettola and Manager Marco Pellegrini.
Image: ©MR Wind S.r.l.
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Photovoltaic solar plant a 50 MW battery storage system is the infrastructure project that the Tunisian state-owned electricity company STEG has put out to tender for the Tataouine Governorate in southern Tunisia. The project includes a 10 MW battery storage system with 20 MWh of energy capacity, along with the necessary infrastructure for connecting to the high-voltage grid. The tender notice was published on October 9, 2026, on the ECEPP electronic portal.
The Tunisian Energy and Gas Company (STEG) is listed as the contracting entity, the announcement pertains to a single-stage open tender for construction work, so the plant should not yet be presented as built or awarded. Its scope combines renewable energy generation, storage, and transmission three components that must function in a coordinated manner to deliver electricity to the national grid.
The plant will have a planned photovoltaic capacity of 50 MW, this figure represents the installation’s generation capacity under reference conditions, but it does not equate to the energy produced in a single day. Actual production will depend on several factors, including available solar radiation, temperature, electrical losses, and operating conditions.
For their part, the batteries will have a power of 10 MW and a nominal energy capacity of 20 MWh, the first figure indicates how much electricity the system can deliver at a given time, the second indicates the amount of energy it can store. If it were discharged at its constant nominal power, it would have a theoretical duration of two hours, before considering operational limits and losses.
This distinction is important for understanding the project the 50 MW of solar power and the 10 MW of the BESS should not be automatically added together as if they were additional permanent generation capacity. The storage system manages previously charged energy, and its effective contribution will depend on how its charging and discharging are scheduled.
The notice identifies the process as a single-stage open tender for construction works, interested companies can consult the documentation through the ECEPP portal, after registering where applicable. There, they will find the technical, financial, and eligibility requirements that should guide the preparation of their bids.
The call for proposals was published on October 9, 2026, and sets December 10, 2026, at 9:00 a.m. as the closing date and time. Participants should check the electronic file for any subsequent clarifications or changes, as well as instructions on submitting proposals.
The announcement indicates that STEG plans to use some of the resources from a loan or grant administered by the European Bank for Reconstruction and Development to cover the cost of the contracts. However, the publication consulted does not provide the total budget, the start date of the works, or the commissioning schedule. This information should not yet be considered confirmed.
The initiative is located in the Tataouine governorate, in the south of Tunisia, choosing a site for solar energy requires evaluating the available resources and terrain conditions, but also its distance from the grid, access routes, and maintenance needs, these are relevant aspects for any installation of this scale.
In a solar operating environment, heat, dust, and dirt buildup can affect module performance, therefore, detailed engineering typically studies equipment selection, ventilation, cleaning procedures, and inspection frequency. The public notice does not specify what specific solutions will be used in Tataouine.
In addition, storage introduces its own monitoring needs, batteries require thermal control, electrical protection, and systems that monitor their state of charge. These elements contribute to maintaining adequate operating conditions, especially when the installation must respond to changes in solar production.
The plant requires infrastructure to carry electricity from the generating equipment to the grid connection point. The announced scope includes high-voltage installations and associated transmission lines. According to initial project information, a substation and approximately eight kilometers of 225 kV lines are planned.
The substation plays a central role in this system, enabling the transformation of voltage levels and providing switching, metering, and protection devices. This allows electricity to be transported under conditions compatible with the technical requirements of the network to which the complex will be connected.
On the other hand, transmission lines must be designed according to the route, required capacity, and applicable safety criteria. Protection and communication systems capable of detecting faults and coordinating equipment response are also needed. The public notice does not specify the exact interconnection point or the final design of these facilities.
Solar energy varies throughout the day and decreases when there is insufficient radiation, a Battery Energy Storage System (BESS) allows for the storage of some of the available production for later delivery, always within its capacity and the established operating limits. In Tataouine, a 20 MWh battery could be used to shift energy to periods of lower photovoltaic generation. It could also help smooth out certain delivery variations if the control strategy and the contract allow for it. These uses are technical possibilities of energy storage, not specific services confirmed in the contract announcement.
Furthermore, coordination between solar inverters, battery converters, and control systems will be crucial, scheduling must consider how much energy is generated, how much is stored, and when it is best to discharge it. Proper management aims to avoid unnecessary restrictions and leverage the grid infrastructure without exceeding its operational limits. Storage capacity also doesn’t mean the plant can continuously supply any demand for two hours, the nominal duration is calculated at a specific power output, while the actual usable energy can vary depending on efficiency, temperature, state of charge, and system safety conditions.
The execution of a complex of this type requires coordinating civil works, electromechanical installation and electrical work, in a photovoltaic plant the components include support structures, modules, inverters, cabling, and monitoring systems. In the BESS system, containers or cabinets, conversion equipment, and controls dedicated to battery safety are also included.
The high-voltage connection adds other tasks, such as protection testing, equipment verification, and commissioning of communication systems, it is not enough to install each component separately, it is also necessary to verify that the solar power plant, batteries, and substation respond correctly when operating together.
However, the design, testing, warranty, and maintenance requirements applicable to this tender must be verified in the official documents, the general notice refers to that document for complete specifications and the obligations that the winning bidder will assume.
For now, the main news is the opening of the competitive bidding process, not the start of construction, after the deadline for submitting bids, announcements regarding evaluation, awarding, and construction scheduling will follow. The available publication does not identify a winning contractor.
The project is notable for combining a 50 MW solar power plant, 10 MW/20 MWh batteries, and transmission infrastructure within a single project. If implemented according to the final contract terms, it could provide new renewable energy generation and time-of-use energy management options in southern Tunisia.
For companies in the sector, the crucial information will be in the technical file, which details the responsibilities for engineering, supply, construction, and testing, as well as the criteria that will determine the viability of the bids. Meanwhile, STEG’s call for tenders puts Tataouine on the map of opportunities for solar energy with storage in Tunisia.
Source: European Bank
Photo: Shutterstock
Moises Carrasquero is a mechanical engineer and writer specializing in technology, engineering, and industrial development, with a focus on the advancements that are transforming these sectors. My goal is to turn complex technical information into clear, accurate, and relevant journalistic content.
The alliance integrates Orbital and Seeq to investigate anomalies and support decisions in power plants, LNG and petrochemicals.
The agreement will promote research on nuclear-powered ships, floating power plants, and naval infrastructure for commercial applications in the United States.
Wärtsilä adds the Viking XPRS to its marine maintenance program through a five-year contract with Viking Line.
Start structural maintenance by prioritizing fast risk identification in the field over fixing full documentation first.
A fuel can be “green” and still turn a routine transfer into an engineering challenge.
How NDT practical experience turns training and examination into field competence for making decisions during real inspections.
The contract covers the supply of pipes and technical solutions to develop the Absheron gas field in the Caspian Sea.
The company will transform the LNG carrier into a floating LNG facility
Q8Aviation selects ETFuels to negotiate an e-SAF supply agreement linked to the Kings Road Humber project.
INSPENET LLC
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ESMC calls for EU policy support to ‘rebuild the full PV value chain’  PV Tech
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According to the National Intellectual Property Administration, Hengdian Group DMEGC Magnetics Co., Ltd. has filed a patent application titled "Method for Preparing a Solar Cell," with publication number CN122892299A and an application date of June 2026.
The patent abstract shows that the present disclosure relates to the technical field of solar cells and discloses a method for preparing a solar cell. The method for preparing a solar cell includes: forming a first doped semiconductor layer on the light-receiving surface of a base layer, and forming a second doped semiconductor layer on the back surface of the base layer; at least one of the first doped semiconductor layer and the second doped semiconductor layer includes alternately arranged contact regions and non-contact regions, where the surface of the contact regions protrudes relative to the surface of the non-contact regions, and the doping concentration of the contact regions is greater than that of the non-contact regions; or, forming alternately arranged first doped semiconductor layers and second doped semiconductor layers on the back surface of the base layer, where the first doped semiconductor layers and the second doped semiconductor layers are configured as contact regions; and forming a first electrode and a second electrode. The present disclosure achieves regionally differentiated treatment, reduces contact resistance, and improves the open-circuit voltage and short-circuit current of the cell.
Data Source Statement: Except for publicly available information, all other data are processed by SMM based on publicly available information, market communication, and relying on SMM's internal database model. They are for reference only and do not constitute decision-making recommendations.
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As the solar industry pushes for higher output and leaner manufacturing, pushing performance limits requires more than cutting costs. True market success depends on ensuring that next-generation designs can endure decades of field operations without unexpected degradation.
The TaiyangNews Reliable PV Module Design Online Conference, taking place on Thursday, October 15, 2026, from 09:30 to 13:00 CEST, will bring together leading module manufacturers, material and component suppliers, testing organizations, and other industry experts to discuss the latest module products and design concepts, material choices, quality considerations, and reliability challenges, from cells, glass, encapsulants, backsheets, and interconnection technologies to complete module architectures.
Djamel Eddine Mansour, Product Manager at JA, will discuss how the layout redesign of the company’s DeepBlue 5.0 platform has improved reliability.
The conference is just 2 days away. Register for free here.
LONGi PotisEdge, LONGi’s energy storage subsidiary, has started operations at its smart manufacturing base in Suzhou, Jiangsu province. Designed for an annual capacity of 50 GWh, the facility will manufacture, test, and deliver utility-scale, commercial and industrial (C&I), off-grid, and microgrid energy storage products for global markets.
The utility-scale storage integration line is scheduled to reach an annual capacity of 31 GWh by October 2026 and expand to 50 GWh in the first half of 2027. The C&I storage line is expected to exceed 10,000 units of annual production by the end of LONGi said the facility extends its ‘LONGi ONE’ strategy into manufacturing and will support the expansion of its global energy storage business.
In an exclusive interview with TaiyangNews earlier this year, LONGi’s Dennis She explained why the company is combining PV and battery storage under the LONGi ONE platform, its market focus, and how it sees integrated energy systems evolving (see LONGi Explains Its Integrated Solar-Plus-Storage Strategy).
Liaoning’s provincial development and reform commission has selected 22 new energy storage projects for the first batch under China’s 15^th Five-Year Plan (2026-2030), with a combined power capacity of 3.15 GW. The project owners include CATL and CR Power. The projects will be developed in Shenyang, Dalian, Yingkou, and Chaoyang, covering independent storage, grid-side storage, and renewable energy-plus-storage applications.
The selected projects will use lithium iron phosphate (LFP) batteries, vanadium redox flow batteries, and compressed-air energy storage, with an emphasis on long-duration technologies. The largest is a 350 MW/2,800 MWh compressed-air energy storage facility in Gaizhou, Yingkou, providing approximately 8 hours of storage. Shenyang’s Shenbei New Area will host a 200 MW/800 MWh vanadium flow battery station, while several other projects will use electrochemical storage systems.
Flexible thin-film gallium arsenide (GaAs) solar cell developer DR Technology reported that its independently developed triple-junction cell achieved 38.3% power conversion efficiency under the AM1.5G standard spectrum. Fraunhofer ISE tested and certified the result, which the company says exceeds its July record of 38.0%.
DR Technology said it is the only Chinese company to have achieved volume production and aerospace validation of high-efficiency flexible thin-film triple-junction GaAs solar cells. The company says it has deployed its products on several commercial satellites, which are operating in orbit. The cells are also intended for applications where low weight and high efficiency are critical, including long-endurance near-space unmanned aerial vehicles (UAVs).
Earlier this year, Shanghai’s ‘Xingshu Plan’ space computing constellation adopted perovskite tandem solar technology to power its central computing satellite, stating it is significantly less expensive than GaAs space cells (see China Solar PV News Snippets).
Guangdong has launched mechanism price bidding for 2026 renewable energy projects, setting an initial full-year bidding volume of 7.934 billion kWh for distributed PV.
The bidding is open to distributed PV projects that have entered operation or are committed to doing so between June 1, 2025, and October 31, 2027, and are not already covered by the mechanism. The bidding price must fall between RMB 0.200/kWh and RMB 0.400/kWh, with the resulting mechanism price applying for 12 years.
The maximum declared share of electricity covered by the mechanism is 80% for distributed PV projects connected at voltage levels below 110 kV and 70% for other distributed PV projects. Separate rules will apply to offshore PV projects included in provincial development pilot programs.
A recent assessment by the Guangdong Provincial Energy Bureau found that the province had another 24.21 GW of capacity available for new grid connections (see China Solar PV News Snippets).
TaiyangNews 2024

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Improving power conversion efficiency and long-term operational stability remains a key challenge for perovskite solar cells, partly due to the thermal instability of conventional molecular contacts. Under thermal stress, single-component molecular contacts can lose their ordered molecular packing, compromising hole transport and accelerating device degradation. To address this issue, researchers in China have developed high-entropy molecular contacts (HE-MCs) designed to improve both device efficiency and operational stability.
“Developing high-entropy packing in hole-selective self-assembled molecule (HSM) systems to prevent molecular contact (MC) collapse remains unexplored,” the researchers said. “The key challenge is balancing ordered HSM self-assembly with high-entropy structural complexity while maintaining efficient hole transport.”
The researchers said their approach involves blending several specially designed HSMs with similar chemical structures but non-centrosymmetric units to promote complex molecular stacking. Mixing the molecules increases configurational disorder and enables the formation of HE-MCs at the hole-selective interface.
The group fabricated inverted perovskite solar cells using a molecular contact consisting of three related carbazole-based molecules: CbzNaph, CbzNaphBF and CbzNaphBT. The latter two incorporate oxygen- and sulfur-containing units, respectively, resulting in different intermolecular interactions and packing arrangements.
The researchers mixed the molecules at a 1:1:1 molar ratio, spin-coated the solution onto cleaned fluorine-doped tin oxide (FTO) glass substrates, and annealed it at 100 C for 10 minutes to form the hole-selective contact.
They then deposited a perovskite absorber with a bandgap of 1.55 eV using a two-step spin-coating process with chlorobenzene as an antisolvent, followed by annealing at 100 C for 30 minutes. After surface passivation, they deposited a 30 nm fullerene (C60) layer by thermal evaporation, a 40 nm tin oxide (SnO2) layer by atomic layer deposition, and a 100 nm copper rear electrode by thermal evaporation.
The researchers also applied a 120 nm magnesium fluoride coating to the back of the glass substrate to reduce reflection losses. The resulting cell featured an FTO/HE-MCs/perovskite/C60/SnO2/Cu architecture.
The team used molecular dynamics simulations, density functional theory calculations, and structural and spectroscopic measurements to investigate molecular packing and charge transport before and after thermal aging. It also evaluated the completed devices through efficiency measurements, prolonged exposure to 85 C, thermal cycling between room temperature and 85 C, and maximum power point tracking under continuous one-sun illumination at 85 C.
“The HE-MC-based devices showed improved average power conversion efficiency (PCE) from 26.37% to 27.29% compared with the CbzNaph-based device, accompanied by the enhanced open-circuit voltage (VOC) and fill factor (FF), which could be attributed to the enhanced hole-selectivity and interfacial passivation,” the researchers said.
The champion device achieved a power conversion efficiency of 27.50% under reverse-scan conditions, with an open-circuit voltage of 1.202 V, a short-circuit current density of 26.40 mA/cm2, and a fill factor of 86.67%. The researchers reported negligible hysteresis under forward-scan conditions.
The device also achieved an integrated short-circuit current density of 25.72 mA/cm2 based on external quantum efficiency measurements, in good agreement with the current density obtained from current-voltage measurements. The Tianjin Institute of Metrological Supervision and Testing independently certified a steady-state efficiency of 27.31% for one of the fabricated cells.
The certified result is slightly below the 27.41% efficiency reported in May 2026 for an inverted perovskite solar cell fabricated by researchers led by Shaanxi Normal University in China, in collaboration with Linköping University in Sweden and other institutions. The earlier result, published in nature, was certified under reverse-scan conditions.
The researchers presented their findings in “High-entropy molecular contacts enable high-efficiency and stable perovskite solar cells,” published in Nature Photonics. The research team included scientists from China’s City University of Hong Kong, Jilin University, and Sun Yat-sen University.

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High in the Swiss Alps, a PV module may encounter intense irradiation reflected from snow while operating at temperatures well below freezing. Thousands of kilometers south, a module in the North African desert will be confronted with heat, dust, UV exposure and sandstorms. A continent away, in Singapore, installations must endure a combination of heat, …
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After all the waiting, the news was good for the homeowner.
Photo Credit: iStock
When a homeowner brings a new solar system online, utility companies can sometimes take a while to update their antiquated billing practices. 
One Massachusetts homeowner waited months to receive their first power bill after their home solar was activated. Based on the solar system’s data, the homeowner believed their power bill should be $0, but that only made the long wait even more frustrating. 
The issue came up in a post on Reddit’s r/Solar forum, where the original poster said they were told utility bills are usually about 10 days late after a new solar system comes online. The bill would be the first statement to reflect a complete billing cycle with solar, and after roughly 15 days, they said the utility still had not provided an answer on when it would arrive.
“I fully expect to have no usage as I produced more than I used based on my apps tracking but until I see my bill I don’t know for sure,” the OP wrote. 
Want to go solar but not sure who to trust? EnergySage has your back with free and transparent quotes from fully vetted providers in your area.
To get started, just answer a few questions about your home — no phone number required. Within a day or two, EnergySage will email you the best options for your needs, and their expert advisers can help you compare quotes and pick a winner.
In subsequent updates, the OP shared that they still had not received their bill for two billing cycles. 
Anxious about the long wait, they began to doubt that the bill would ultimately deliver good news.
“I am sure this error will not be in my favor,” the OP wrote in an update. 
Some Redditors responded that they had similar experiences after installing home solar. 
FROM OUR PARTNER
Want to go solar but not sure who to trust? EnergySage has your back with free and transparent quotes from fully vetted providers that can help you save as much as $10k on installation.
To get started, just answer a few questions about your home — no phone number required. Within a day or two, EnergySage will email you the best local options for your needs, and their expert advisers can help you compare quotes and pick a winner.
“I didn’t get a bill for 2 months,” said one. 
However, other commenters said they received their first bill after solar activation on time. 
For many solar households, the first statement covering a full cycle is when projected savings finally get measured against the utility’s numbers. Though many solar users monitor their system’s production through an app or other interface, those numbers may not seem “official” until the utility company verifies them. 
This is particularly true when a customer participates in net metering and their solar production exceeds their household use. 
💡Go deep on the latest news and trends shaping the residential solar landscape
Going solar is one of the best ways to save money on home energy. Homeowners shopping for a system can try EnergySage to get free solar installation estimates and compare quotes.
In the end, the OP shared an update saying that they finally had received one of the two late bills. After all the waiting, the news was good for the homeowner. 
“Finally got a bill,” they wrote in the comments. “I have a credit of $110.” 
“I guess it is all good as National Grid’s production matches what my app says, but still not sure why I am so behind on my billing,” they added. 
For homeowners considering whether home solar is right for them and their budget, EnergySage offers free tools that let you curate competitive bids from local installers without handing over your personal information until you are ready.
With EnergySage’s help, the average person can save up to $10,000 on solar purchases and installations. EnergySage’s solar map shows the average cost of a home solar panel system by state, along with details on solar panel incentives for each state. Together, these resources can help homeowners get the best price for rooftop solar panels and access available incentives.
Adding battery storage to a solar setup is one of the best ways to protect your home during outages, save money on energy, and go off-grid. Homeowners can also explore EnergySage for information about home battery storage options, including competitive installation estimates.
Plenty of solar homeowners have found that the first utility bill after installation raises more questions than answers. These articles cover disputed charges, lingering costs, and households whose bills dropped close to zero.
• In South Carolina, exports in the app preceded a $150 bill claiming near-zero grid use.
• A new homeowner’s first bill hit $420 even though rooftop panels helped sell the house.
• In Ohio, one homeowner learned net metering may leave much of the electric bill untouched.
• One homeowner said, “I do not have an electric bill anymore” after major solar incentives.
• Homeowners told cautious shoppers they haven’t paid more than $20 for a bill in years.
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CONWAY — The Planning Board reviewed changes to BlueWave Solar’s plans for a solar array on Roaring Brook Road last week, and discussed the property’s slopes and screening methods before continuing its discussion to an eighth hearing.
“There’s more ahead,” Planning Board Chair George Forcier told attendees on Thursday.
The proposed solar array would be a dual-use system, allowing landowners to continue using the site for farming, with animals able to graze under the panels. The initial application for the project on Ronald Boyden’s farmland described a 4.99-megawatt system with solar panels set 10 feet above the ground, along with a battery energy storage system, a 20-foot-wide gravel access road and a stormwater basin. However, after the company agreed to remove 20% of the panels, the latest designs show a 4.05-megawatt system.
The design also includes an equipment pad. In response to Planning Board member Jeff Lacy’s request at the July hearing, BlueWave Solar moved the proposed site for the battery energy storage system from the middle of the array to behind a barn on the property and added plantings to screen the north side of the equipment pad.
Lacy said he is happy with the change and asked if the BlueWave Solar team could add similar screening to the south side of the equipment pad.
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“I’m just trying to buffer the south side as well as the north side,” Lacy said. “Since we’ve lucked out and have a barn presented to us to work with, why not make the most of it, use a little screening to really make this invisible?”
While BlueWave Solar’s Senior Director Steve McDonough reiterated that the engineers cannot render the equipment pad “invisible,” he plans to run Lacy’s idea by Boyden given that the farmer must still have sufficient access to the barn.
“What I would hope is that we find a balance between his access and screening it from that corner [of Roaring Brook Road],” Forcier said.
Forcier pointed out that BlueWave Solar’s latest plans did not include the former screening along the corner of Roaring Brook Road.
“My biggest concern was the general view of the panels coming down the corner,” Forcier said. “If you put vegetation in that corner, you go a long way in softening the impact of the arrays for folks traveling through there.”
McDonough said the BlueWave Solar team can likely add that screening back in as long as Boyden approves.
The Planning Board also continued to discuss the property’s slopes as it considers a waiver. The town’s bylaw for commercial solar photovoltaic systems requires that the systems sit on slopes with grades of less than 15% while allowing the board to issue waivers for slopes up to 18% “based on site-specific parameters.”
According to BlueWave Solar’s written request for the waiver, approximately 9.3% of the solar array includes slopes between 15% and 18%, which “demonstrates the applicant’s efforts to minimize development on the steeper slopes to the greatest extent practicable.”
The letter argues that the project is a “good opportunity for the board to grant a waiver” due to the area of the panels lying in a field with “existing vegetative cover” and the applicant not proposing “major clearing or grubbing.” The letter claims that disturbances from construction will be limited to the foundations of the panels and BlueWave would restore any damage to the ground through decompacting soil, topsoil and seed. The letter also adds that the slopes fall within the Massachusetts Department of Environmental Protection (MassDEP)’s maximum recommended slope of 33.5%.
Peer reviewer Chris Chamberland then read a memorandum with information to help the Planning Board in its determination of whether to grant BlueWave Solar the waiver. Chamberland mentioned the fact that the project maintains the agricultural purpose of the site and the town’s solar bylaw requires that solar facilities “should be located to minimize impacts to existing agricultural land.” The lack of grading proposed for the project and BlueWave Solar’s latest Stormwater Management Report showing reduced stormwater runoff after development are also considerations that may support the waiver, he said.
Still, Chamberland emphasized that the waiver is “discretionary” and the Planning Board may find that the applicant’s justification for the waiver describes “any well-designed array on an open field,” as opposed to particular conditions to the site. Based on soil mapping, the solar panels with slopes between 15% and 18% sit within “Hydrologic Group C soils” with “moderately low infiltration rates” that generate more runoff than other soils.
The Planning Board decided to look over Chamberland’s comments before the next hearing, when members plan to discuss the waiver further with town counsel. The board plans to discuss the safety concerns that residents and members have raised with the battery energy storage system with Fire Chief Christopher Herrmann at a future hearing after reaching a decision with the slope waiver.
Planning Board member Phyllis Craine also brought up a concern from a past hearing that the construction of the array would disrupt the Conway Grammar School students across the street. In response, McDonough said the pile driving would last four weeks or less due to the sandy soil at the site. At a minimum of 722 feet away from the project, the school would hear the sound of the machinery at about 56 decibels, the same level as a household refrigerator, according to Yale University’s “Decibel Level Comparison Chart,” without taking barriers like the array’s vegetation and building’s walls into consideration.
The next public hearing on the proposed solar array is tentatively scheduled for Tuesday, Oct. 27, at 7 p.m. at Conway Town Hall.

Aalianna Marietta is the South County reporter. She is a graduate of UMass Amherst and was a journalism intern at the Recorder while in school. She can be reached at amarietta@recorder.com or 413-930-4081. More by Aalianna Marietta
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The Ministry of Environment is putting back into operation the photovoltaic panels installed in 2014, with an estimated production of 36,000 kWh annually  Informat.ro
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Developer energyRe closes US$815 million financing for 360MW solar PV portfolio  PV Tech
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Buckyball Breakthrough: Loosening C60 Packing Pushes Perovskite Solar Cells to 27.2% Efficiency
Perovskite solar cells have spent the past decade shattering one efficiency record after another, yet a stubborn culprit has quietly siphoned away their potential: the very molecule engineers trusted to carry electrons out of the device. Now, a large international team led by researchers at the National University of Singapore, Shanghai Jiao Tong University and the University of Potsdam has identified the hidden mechanism behind this energy drain and devised an elegant fix. By infiltrating a vapor of simple trialkylamine molecules into the fullerene electron-transport layer, they loosened the tight packing of C60 buckyballs, suppressed a previously unrecognized recombination pathway, and pushed certified power conversion efficiency to 27.2 percent on a device with an active area of just over one square centimeter. The work, published in Nature Photonics, resolves a long-standing puzzle in perovskite photovoltaics and could reshape how electron contacts are designed across the field.
The heart of the problem lies at the interface between the perovskite light absorber and C60, a spherical carbon molecule resembling a microscopic soccer ball. In inverted, or p-i-n, perovskite solar cells, C60 sits directly on top of the perovskite film and serves as the electron-selective contact, whisking photogenerated electrons toward the external circuit while blocking holes. It is cheap, sublimable, chemically compatible with the delicate perovskite crystal, and forms smooth, uniform films. Yet devices built with C60 contacts consistently suffer from severe non-radiative recombination at that interface, a process in which photoexcited electrons and holes annihilate each other as heat instead of contributing to current or voltage. Previous research campaigns attacked this problem by passivating electronic trap states on the perovskite surface, assuming the perovskite itself was the defective party. Those efforts helped, but the recombination losses never fully disappeared, and the true origin of the loss remained maddeningly obscure.
The Singapore-led team approached the mystery from a different angle: instead of interrogating the perovskite, they scrutinized the electronic structure of the C60 film itself. Using density functional theory calculations, they showed that when C60 molecules pack closely together in a crystalline film, their lowest unoccupied molecular orbitals, the LUMOs, overlap strongly from molecule to molecule. This intermolecular coupling transforms what would be discrete, isolated molecular levels into extended, band-like electronic states that spread across the fullerene film and reach all the way down to the perovskite surface. In isolation, a single C60 molecule is a poor recombination center. But when its LUMO levels merge into a delocalized band that hybridizes with states at the perovskite surface, the interface gains an energetically accessible pathway for electrons and holes to meet and recombine non-radiatively.
To quantify how damaging these band-like states are, collaborators at the University of Potsdam computed carrier capture coefficients for the hybridized interface states, drawing on the multiphonon emission framework that describes how carriers shed energy into lattice vibrations. The calculations indicated that the C60-derived band-like states act as highly efficient recombination conduits, explaining why even well-passivated perovskite surfaces lose voltage the moment C60 is deposited on top. The team confirmed this experimentally by measuring quasi-Fermi-level splitting, a proxy for the maximum voltage a solar cell can deliver, before and after C60 deposition. Depositing pristine C60 onto an already passivated perovskite surface slashed the quasi-Fermi-level splitting by a striking 89 millielectronvolts, a loss large enough to shave roughly a full percentage point off the achievable efficiency.
The remedy the researchers devised is as chemically simple as it is conceptually elegant. Rather than modifying the perovskite, they exposed the C60 film to a vapor of trialkylamines, specifically a long-chain amine designated C18N. The amine molecules intercalate between the buckyballs, wedging them apart and disrupting the ordered molecular packing that enables LUMO overlap. X-ray diffraction measurements using grazing-incidence geometry at the Shanghai Synchrotron Radiation Facility documented the resulting loss of crystallinity in the fullerene film, while time-of-flight secondary ion mass spectrometry confirmed that the amine species distribute through the C60 layer. Transmission electron microscopy provided direct visual evidence of the structural changes. Crucially, the treatment preserves the electronic function of the contact: the decoupled C60 still conducts electrons efficiently, but its LUMO-derived band-like states are substantially weakened, closing the recombination channel at the perovskite interface.
The electrical consequences were immediate and dramatic. The quasi-Fermi-level splitting loss after C60 deposition dropped from 89 millielectronvolts to just 41 millielectronvolts with the amine treatment alone, and fell further to 17 millielectronvolts when combined with conventional perovskite surface passivation. In other words, the team recovered nearly all of the voltage that the fullerene contact had been silently destroying. Photoluminescence quantum yield measurements and impedance spectroscopy corroborated the reduction in non-radiative losses, and femtosecond transient absorption experiments traced the extended carrier lifetimes that result from shutting down the interfacial recombination pathway.
Translated into full devices, the interfacial engineering delivered inverted perovskite solar cells with a certified power conversion efficiency of 27.2 percent and a stabilized output of 26.6 percent on an active area of 1.02 square centimeters. That certification matters: laboratory efficiency records are sometimes reported on tiny cells measured under non-standard conditions, whereas this result was independently verified on a device large enough to be technologically relevant. The achievement places these cells among the most efficient single-junction perovskite devices ever reported and demonstrates that the remaining headroom to the theoretical Shockley-Queisser limit is increasingly limited by losses that engineers can now name, locate and suppress.
Efficiency alone does not make a solar technology viable; stability under real-world conditions does, and this is where perovskites have historically stumbled. The amine-treated devices proved remarkably resilient, retaining more than 98 percent of their initial efficiency after 1,000 hours of continuous illumination under ambient air, without protective encapsulation tricks beyond standard device architecture. This durability suggests that loosening the fullerene packing does not introduce new degradation pathways, and may even contribute to interface robustness by reducing the recombination-driven heating and ionic stress that accelerate failure. For a technology often criticized for degrading within months, thousand-hour endurance at near-record efficiency is a persuasive counterargument.
Beyond the headline numbers, the study carries a broader conceptual lesson for the field. For years, passivation strategies have focused almost exclusively on the perovskite side of every interface, treating the transport layers as chemically inert bystanders. This work demonstrates that the transport layer’s own electronic structure, down to the way its molecules pack and couple, can be the dominant source of recombination. The implication extends well beyond C60: any molecular contact material whose frontier orbitals delocalize into band-like states could be quietly sabotaging device performance, and the same intermolecular decoupling logic could be applied to organic semiconductors, small-molecule contacts and even the charge-selective layers in tandem and multi-junction architectures.
The research also showcases the power of combining atomistic simulation with synchrotron characterization and device engineering under one coordinated program, spanning institutions in Singapore, China and Germany. With perovskite-silicon tandems now approaching and exceeding 29 percent efficiency, every millielectronvolt of interfacial loss recovered translates directly into commercial advantage, and the trialkylamine vapor treatment is a low-cost, scalable post-deposition step compatible with existing fabrication flows. One of the corresponding authors, Yi Hou, is the founder of a perovskite commercialization company, underscoring how quickly laboratory insights of this kind are flowing toward manufacturing. If the buckyball’s destructive band-like states can be tamed with a puff of amine vapor, the path from record-setting cells to durable, mass-produced perovskite modules looks considerably shorter than it did before this interface was finally understood.
Subject of Research: Suppressing interfacial recombination at the C60 electron-selective contact in inverted perovskite solar cells through vapor-phase trialkylamine passivation
Article Title: Intermolecular decoupling of C60 suppresses interfacial recombination in perovskite solar cells
Article References: Intermolecular decoupling of C60 suppresses interfacial recombination in perovskite solar cells. (n.d.). https://doi.org/10.1038/s41566-026-02030-x
Image Credits: AI Generated
DOI: 10.1038/s41566-026-02030-x
Keywords: perovskite solar cells, C60 fullerene, interfacial recombination, trialkylamine passivation, electron transport layer, power conversion efficiency, non-radiative recombination, quasi-Fermi-level splitting, vapor-phase treatment, device stability, Nature Photonics, photovoltaics
News Source: Denise Maddox. (October 13, 2026). Buckyball Breakthrough: Loosening C60 Packing Pushes Perovskite Solar Cells to 27.2% Efficiency. Scienmag.
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Luis Reyes
Oct 13, at 11:00am ET
Solar panels have a big issue. They stop making electricity when the sun goes down, but that’s right when people get home, turn on the TV, and crank up the air conditioning.
For this reason, the solar farm that’s just starting to go up in Arizona’s Mohave County is getting its own batteries. And I mean a lot of them. ContourGlobal, the London-based power producer building it, says Project Sterling will have more than 760,000 solar panels and more than 300 battery containers. Tesla’s already signed up to buy about 90% of what it makes.
Sterling’s site is just off old Route 66, on the stretch between Topock and Kingman. Here, a new 5.2-mile road, Polaris Road, is being built to connect the two. Lake Havasu City, the Arizona town that famously bought London Bridge, is about 20 miles to the south, so a London company setting up shop out there feels about right.
The whole project occupies more than 2,000 acres in the Mojave Desert. (Yes, the county spells it Mohave and the desert spells it Mojave. You get used to it. I almost am.) For comparison, Sterling’s more than 760,000 panels would top the 700,000 we wrote about, which sit on an old Soviet firing range in Germany. Solar’s turned up in odder spots around Arizona, like over an irrigation canal south of Phoenix. But Sterling’s the classic version, with a whole lot of panels spread across open desert.
Figures: ContourGlobal.
Tesla’s deal is a power purchase agreement, which ContourGlobal announced back in July. A power purchase agreement is basically a long-term contract to buy a plant’s electricity at a price agreed up front. It lets a company like Tesla secure a lot of clean power without having to build or operate the plant itself. (Sorta Elon Musk’s whole thing, if you ask me.)
Under the deal, Tesla gets about 1 terawatt-hour a year, which ContourGlobal says is around 90% of what Sterling will produce. A terawatt-hour is a billion kilowatt-hours, and the kilowatt-hour is the unit on your power bill. Tesla also receives the renewable energy certificates that accompany that power, which are essentially receipts that let a company count the electricity as clean.
So where’s all that power going?
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Sterling plugs into lines run by the Western Area Power Administration, the federal agency that sells the power from Hoover Dam, among other things. It also has firm rights to send power over the lines into California, and it’ll be pseudo-tied to California’s grid. A pseudo-tie basically lets a plant that’s physically in one grid operator’s territory act like part of another’s, so California’s grid operator can treat Sterling as one of its own plants. Trade publication pv magazine reported in July that the power’s meant for Tesla’s California operations.
ContourGlobal hasn’t said which Tesla sites will use it, what Tesla’s paying, or how many years the contract runs, and I couldn’t find anything from Tesla on it. This would probably be good to know, but I wouldn’t hold my breath for a price, either, since companies tend to keep those numbers to themselves. And if you’re Tesla, you apparently don’t like sharing data at all.
Antonio Cammisecra, ContourGlobal’s president and CEO, said in the company’s groundbreaking announcement that “our teams engineered the project around the specific needs of our customer.” ContourGlobal bought Sterling while it was still in development and reworked it to meet Tesla’s needs, so it’s basically a made-to-order power plant.
Cammisecra also says Sterling will be able to deliver power for up to 16 hours a day. Basically, the panels handle the daylight, and the batteries handle the evening.
Sterling’s battery system is rated at 360 megawatts and 1.4 gigawatt-hours. If you’re wondering why a battery needs two ratings, think of megawatts as horsepower and gigawatt-hours as the size of the gas tank. One tells you how hard the battery can push, and the other tells you how long it can keep that up. Put it all together and Sterling’s batteries can run flat out for about four hours.
Add a long day of sunshine to about four hours of battery, and you can see how the company gets to 16. I’d guess 16 is a best-case number, though, since a December day in the Mojave is a lot shorter than a June one.
The batteries are lithium iron phosphate (LFP) with liquid cooling and built-in fire protection. LFP cells hold a little less energy than the nickel-heavy ones in a lot of EVs. They’re a lot less likely to catch fire, though, which you’d probably want if you’re parking more than 300 containers of them in the desert. As far as I can tell, neither of ContourGlobal’s announcements names a battery supplier. Tesla, the customer here, sells its own shipping-container-sized Megapack batteries to power companies, so I’m pretty curious whose cells end up inside.
You’ll see Sterling described both ways. And they’re both right. Solar panels produce direct current, and Sterling’s panels are rated at 509 megawatts. The 450 is what the plant can actually send to the grid once inverters turn that into alternating current, the kind that comes out of your wall outlet.
The panel maker doesn’t seem to have been named either, so I can’t tell you how big each panel is. Divide 509 megawatts by 760,000 panels, though, and each one works out to somewhere around 670 watts.
ContourGlobal’s July announcement had one line that’s easy to skim past. It said work on Sterling had already started last year through “off-site physical work of significant nature,” including the purchase of major equipment.
I doubt that wording was an accident. The IRS uses almost the same phrase, “physical work of a significant nature,” as its test for when a solar project has officially started construction. For a plant that won’t be finished until 2028, that start date decides whether it can still claim the federal tax credits for wind and solar that Congress started phasing out last year. I couldn’t find anything from ContourGlobal on whether Sterling is claiming them.
If you’re planning a Route 66 road trip, the stretch between Topock and Kingman will probably be a little busier than usual for a while. ContourGlobal expects an average of about 400 people working on Sterling during construction, and it’s aiming to have the plant up and running in 2028.
Don’t bite your tongue. Speak up.
Luis Reyes · Oct 10, 2026
Luis Reyes · Oct 1, 2026
Chema Bonilla Díaz · Sep 23, 2026
Olivia Richman · Sep 18, 2026
Luis Reyes · Oct 6, 2026
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Chema Bonilla Díaz · Oct 13, 2026
Luis Reyes · Oct 13, 2026
Olivia Richman · Oct 13, 2026
Luis Reyes · Oct 13, 2026
Olivia Richman · Oct 13, 2026
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Top Hybrid Solar Inverters And Rooftop Solar Panels Under Rs. 60,000 For Modern Homes, Starting Under Rs. 8  News18
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BarcelonaThe president of the Port of Barcelona, José Alberto Carbonell; the CEO of the Grimaldi Group in Spain, Mario Massarotti, and the Director of Institutional Relations, Miguel Pardo, inaugurated this Tuesday the new vertical parking facility at the port with a photovoltaic plant on the roof. The new parking facility, located next to the Grimaldi Terminal, has a capacity for nearly 2,000 new vehicles and more than 6,200 square meters of solar panels, which will produce 1,695 MWh annually, an amount exceeding the terminal’s consumption.
The final objective is to connect the photovoltaic plant to the grid to avoid production losses, and in any case, a battery plant with a capacity of 1.3 MW has been installed. Carbonell stated that this infrastructure is a sign “of Grimaldi’s trust in the Port and its community” and that they are responding to the need to better utilize space by growing vertically.
Massarotti highlighted the company’s commitment to promoting the ecological transition in transport and underscored that, so far, the company has invested 50 million euros in the Port of Barcelona. In this regard, the head of the shipping company explained that the silo will serve for the storage of new vehicles, especially those coming from China, as he stated that the Asian country exports 250,000 cars to Spain every year and they need this storage capacity.
In this regard, the CEO of Grimaldi in Spain explained that they have incorporated 17 car carriers into their fleet, 14 of which are already operating, and that they have purchased 10 more to increase this fleet in the coming years. For his part, Pardo highlighted that the terminal can no longer grow in surface area, which is why they have opted for vertical growth, a fact that has allowed them to gain 37,500 square meters of surface area.

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The close takes Zelestra’s project financing past $1 billion in the U.S.
October 13, 2026
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Renewable energy developer Zelestra has secured $350 million in green financing for its 203 MW Reclamation Solar project in Gibson County, Indiana.
Canadian Imperial Bank of Commerce (CIBC), BBVA, and Societe Generale provided the financing.
The project is backed by a long-term power purchase agreement with Meta and is expected to become operational by the end of 2027. The Reclamation Solar project is under construction on land previously used for coal mining operations in southwestern Indiana. It is expected to support approximately 200 jobs during peak construction.
Sybil Milo Cioffi, Zelestra’s US CFO, said: “Passing $1 billion in U.S. project financing this year is a milestone we are pleased to share with our lenders and our customers. Reclamation is a major project that will deliver many benefits to our customer, and to the wider community. We are pleased that CIBC, BBVA and Societe Generale are backing our ambition. These partnerships enable us to keep building at the pace this market needs.”
With this transaction, Zelestra’s total project financing raised in the U.S. in 2026 has reached $1.14 billion. According to the company, the financing will support the construction of more than 800 MW of new solar capacity across the country.
In August 2026, the company closed $181 million in green project financing for its 136 MW Skull Creek solar project in Anderson County, Texas, which is under construction and is expected to begin commercial operations by the end of 2027.
Zelestra also secured a $600 million green financing credit facility in March with Société Générale and HSBC for the 252 MW Echols Gove project in Lamar County and the 187 MW Cedar Range solar project in Hopkins County in Texas.
Zelestra is expanding its U.S. operations to meet growing demand for renewable energy from hyperscalers and corporate customers. Headquartered in Arlington, Virginia, the company has a development pipeline of approximately 16 GW across major U.S. markets.
Announced large-scale solar project funding increased by 71% in the first half of 2026 compared with the funding raised in the same period in 2025, according to Mercom’s recently released 1H and Q2 2026 Solar Funding and M&A report.
Renu
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Building better solar tech, a crystal at a time  Princeton Materials Institute
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TRAFFIX is adapting its renewable energy logistics operations to accommodate larger solar panels, heavier battery storage systems and increasingly specialized transportation requirements across North America.
The Chicago-based third-party logistics provider said changes in equipment dimensions and weight are creating additional challenges for developers, manufacturers and suppliers managing solar and energy storage projects.
Solar modules measuring approximately seven feet long and lithium-based battery storage systems transported in 20-foot containers require specialized freight equipment, handling procedures and delivery planning. Inadequate preparation can increase transportation costs, damage risks and project delays.
“Solar projects are planned months or even years ahead, while transportation is often managed reactively once product is ready to move,” said Craig Wadas, vice president of national accounts at TRAFFIX.
The company is integrating customers’ enterprise resource planning data, inventory information and construction schedules into transportation planning to secure appropriate equipment and capacity before shipments are ready.
TRAFFIX is also evaluating intermodal transportation for long-distance shipments from ports to inland renewable energy project sites. Combining rail and trucking can provide additional capacity options, improve cost predictability and potentially reduce transportation emissions.
The company reported handling more than 2 million square feet of solar product in warehouse operations, managing over 2 gigawatts of solar panels and coordinating approximately 6,000 truckloads of solar-related freight.
Its renewable energy logistics operations are supported by more than 50 specialists and include hazardous materials handling, shipment consolidation and end-of-life recycling services for battery storage equipment.
Founded in 1979, TRAFFIX provides truckload, flatbed, intermodal, drayage, expedited and managed transportation services throughout the United States, Canada and Mexico.

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Hidden Oxygen Leaks From Solar Cell Substrates and Slowly Tears Perovskites Apart
Perovskite solar cells have dazzled the photovoltaics world with their meteoric rise in efficiency, cheap solution processing, and remarkable tolerance to defects that would cripple conventional silicon devices. Yet a stubborn shadow has followed every laboratory breakthrough: these remarkable crystals degrade, sometimes alarmingly fast, when exposed to the very heat that a sun-drenched rooftop or an orbiting spacecraft delivers every day. For years, researchers have pointed the finger at the perovskite itself, blaming volatile organic components and wandering halide ions for the slow decay of performance. A new study published in Communications Engineering now adds a surprising and largely overlooked culprit to that list — the transparent electrode substrate sitting quietly beneath the active layer, leaking oxygen into the device whenever temperatures climb.
The research, led by Mritunjaya Parashar and Bibhudutta Rout at the University of North Texas Ion Beam Laboratory in collaboration with Nicholas Rolston’s group at Arizona State University, tackled a question that most degradation studies have sidestepped: where exactly do the mobile species that poison perovskite devices actually come from? Rather than assuming the answer lies within the perovskite film, the team treated the underlying indium tin oxide, or ITO, substrate as a potential source of extrinsic contaminants. Their suspicion proved well founded, and the consequences for how engineers design stable perovskite devices could be significant.
To catch atomic-scale migration in the act, the researchers turned to one of the most quantitative tools in the materials analyst’s arsenal: Rutherford Backscattering Spectrometry, or RBS. In this technique, a beam of energetic light ions — typically helium nuclei — is fired at the sample, and the energies of ions that bounce backward off atomic nuclei are recorded. Because each element scatters the projectiles in a characteristic way, and because the depth of a collision shifts the detected energy in a predictable manner, RBS delivers element-specific concentration profiles as a function of depth. Unlike purely surface-sensitive methods, it can probe hundreds of nanometers into a stack, making it ideal for watching atoms shuffle across buried interfaces.
The experimental design was elegantly simple. Thin films of methylammonium lead triiodide, the archetypal organic-inorganic halide perovskite, were deposited on ITO-coated glass and then thermally aged at 45, 65, and 85 degrees Celsius for 96 hours under a nitrogen atmosphere. These temperatures bracket the realistic operating range of a solar cell in the field, from a mild warm day to the punishing heat of a module baking in direct sun. A non-annealed control sample provided the baseline against which every thermally induced change could be judged. By comparing the elemental depth profiles before and after aging, the team could separate what was always there from what heat had set in motion.
The results confirmed what degradation researchers had long suspected about the perovskite itself: both lead and iodine, the two heavyweights of the crystal lattice, redistributed during aging. Iodine migration in particular has been implicated in a cascade of failure modes, from defect generation to corrosion of adjacent contact layers. But the headline discovery was something no one had predicted. Oxygen, an element that should have no business accumulating at the buried interface between the perovskite and the electrode, piled up there in the aged samples in concentrations that RBS measured unambiguously.
The control sample held the key to interpreting this anomaly. If the oxygen signature had been present from the start, it could have been dismissed as a fabrication artifact — residual solvent, adsorbed moisture, or contamination during deposition. Instead, the non-annealed film showed no such accumulation, while the ITO substrate beneath the aged samples displayed measurable oxygen loss and surface roughening. The conclusion was inescapable: the oxygen was not sneaking in from the environment or introduced during processing. It was being driven out of the ITO itself by thermally activated out-diffusion, migrating upward through the stack, and collecting at the perovskite-electrode interface where it could wreak havoc on electrical contact quality.
This finding reframes the front-contact breakdown problem in perovskite devices. ITO is the workhorse transparent electrode of thin-film photovoltaics, prized for combining optical transparency with electrical conductivity. But the new data show it is not an inert bystander. At elevated temperatures, its oxygen sublattice becomes a reservoir of mobile species that steadily bleed into the overlying device layers. Oxygen accumulation at the interface can disrupt the delicate band alignment that allows charge carriers to flow out of the perovskite, degrade the contact, and accelerate the very degradation pathways that engineers have been fighting from the other side of the stack. In effect, the substrate was an unacknowledged participant in the device’s decline all along.
Having identified the leak, the team set about plugging it. Their solution was a self-assembled monolayer, a single molecular layer of [2-(3,6-Dimethoxy-9H-carbazol-9-yl) ethyl] phosphonic acid, inserted between the ITO and the perovskite. Self-assembled monolayers have become fashionable in the perovskite field as charge-selective contacts, but here the molecule was recruited for a different job: acting as an interfacial diffusion barrier. The phosphonic acid group anchors tightly to the oxide surface, while the carbazole-based tail presents a dense organic barrier to migrating species. The RBS measurements showed that with this monolayer in place, the ITO retained its stoichiometry — its oxygen stayed put — and oxygen migration into the perovskite stack was suppressed.
Importantly, the authors are candid about the limits of the fix. The intrinsic migration of lead and iodine within the perovskite persisted even with the barrier layer, meaning that the monolayer addresses one major degradation channel without eliminating the others. That honesty is part of what makes the study valuable. It does not claim to have solved perovskite stability; it demonstrates, with quantitative rigor, that substrate-derived oxygen is a real and addressable component of the problem, and that interfacial engineering must be part of any serious stability strategy. The work also validates RBS as a tool for tracking elemental migration in these multilayer stacks, offering the community a quantitative benchmarking method rather than indirect electrical signatures alone.
The implications reach well beyond laboratory curiosity. Perovskite solar cells are racing toward commercial deployment, and they are also leading candidates for power in space, where radiation and thermal cycling impose brutal demands. Funding for the study came in part from the US National Science Foundation and from the US Space Force SSTI-3 program, reflecting exactly this dual interest in terrestrial and orbital applications. For module manufacturers, the message is that the choice and treatment of the transparent electrode, and the molecular interface layered upon it, deserve the same engineering attention as the perovskite composition itself. A failure that looks like a material weakness in the absorber may actually begin at the bottom of the stack, invisible until a beam of helium ions reveals the culprit atom by atom.
Subject of Research: Thermally driven interfacial diffusion and substrate-derived oxygen migration in halide perovskite solar cells
Article Title: Quantitative investigation of thermally driven interfacial diffusion and front-contact breakdown in organic-inorganic halide perovskites
Article References: Quantitative investigation of thermally driven interfacial diffusion and front-contact breakdown in organic-inorganic halide perovskites. (n.d.). https://doi.org/10.1038/s44172-026-00811-4
Image Credits: AI Generated
DOI: 10.1038/s44172-026-00811-4
Keywords: perovskite solar cells, Rutherford Backscattering Spectrometry, indium tin oxide, oxygen migration, interfacial diffusion, self-assembled monolayer, device degradation, thermal aging, front-contact breakdown, iodine migration, photovoltaic stability, Quantitative
News Source: Beatrice Stafford. (October 13, 2026). Hidden Oxygen Leaks From Solar Cell Substrates and Slowly Tears Perovskites Apart. Scienmag.
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Juniper Green Energy Completes 150 MW Wind-Solar Project  SolarQuarter
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Representatives of the Mt. Olive Creek Solar project say they have taken several steps to improve roadway safety following complaints about trucks traveling to and from the construction site.
Solly Van Meter with ENGIE North America and Corey Templet with GIS addressed the Russell County Fiscal Court Monday morning, outlining their response to concerns raised last month.
In September, resident Robert Coppage appeared before magistrates on behalf of himself and other residents of the Sano and Mt. Olive communities. He described unsafe truck traffic, primarily along Sano–Mt. Olive Road. Residents also reported damage to roads, fencing and other property.
Monday, Van Meter said the company is in its seventh year of leasing property for the project and has worked to address concerns from neighbors throughout that time. He said roadway safety concerns are receiving that same attention.
Templet – pronounced Templay — said construction began last October, with nearly 300 people now working on-site daily. He acknowledged that roads serving the project are narrow, even for regular vehicle traffic, and said approximately 15 to 20 semi-trucks and dump trucks travel to the site each day.
Templet said all delivery drivers have been instructed to approach from the west side of the project. He also outlined additional safety measures taken in response to complaints.
Templet said certified flaggers are now being used when crews work in the West Highway 76 area. The company has also requested assistance from a state highway inspector to ensure compliance, and daily job-site meetings reinforce safety requirements for employees and subcontractors.
Fourth District Magistrate Steve Richardson said most complaints he receives involve trucks using rural roads to reach the construction site.
Judge-Executive Randy Marcum said a direct contact number for construction-site personnel has been helpful. That number has been shared with magistrates, 911 Dispatch and the sheriff’s department, allowing callers with concerns to reach someone at the site directly.
Sheriff Derek Polston said his latest complaint involved employees driving recklessly while leaving work at the end of their shift. He said deputies have increased their presence in the area, providing extra patrols daily following last month’s complaints.
Polston also offered to help with traffic control when solar-panel deliveries begin after the first of the year, provided deputies are available and not responding to other calls.
Templet acknowledged that traffic issues can arise with a construction project of this size, but said the company will do everything it can to reduce those problems and address new concerns.

 
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TrinaTracker, which supplies smart solar tracking systems, has rolled out two robotic products developed in-house to enhance the building and upkeep of photovoltaic (PV) facilities, widening the scope of its Smart PV Ecosystem.
The BUILDEX PV Module Installation Robot and the AURORA PV Cleaning Robot are engineered to handle solar module installation and cleaning automatically, boosting operational efficiency and trimming costs over the full lifecycle of solar power plants.
This release highlights how TrinaTracker has shifted since the year began, moving away from being solely a tracking system equipment supplier to become a Smart PV and Robotics Solution Provider. Through the fusion of dependable trackers, artificial intelligence (AI), robotics, engineering and intelligent operations services, the firm seeks to refine plant design, elevate construction quality and simplify operations and maintenance (O&M).
The BUILDEX PV Module Installation Robot tackles problems tied to conventional solar module installation, which frequently depends on manual labour and may entail drawn-out construction schedules, steep costs, uneven installation accuracy and workplace safety hazards.
Driven by AI-based visual positioning and precision mechanical control systems, BUILDEX handles module picking, transportation, alignment and placement automatically.
Through industrial 3D cameras and AI vision algorithms, the robot detects modules and mounting structures, attaining millimetre-level alignment for more uniform installation.
As stated by TrinaTracker, BUILDEX is capable of installing as many as 90 modules each hour, running at three to four times the pace of manual labour. Its fork-and-flip mechanism permits automatic material feeding and works with both landscape and portrait module orientations, which helps streamline material handling and speed up construction schedules.
The robot is built to function across varied terrains and mounting configurations, encompassing fixed and tracking structures, along with single- and dual-row portrait tracker arrangements, referred to as 1P and 2P. Its adjustable base and platform levelling capability of up to 17 degrees permit operation on sloping land.
A LiDAR-AI multisensing safety system assists in spotting and averting potential on-site hazards.
The robot is further engineered for continuous operation, cutting reliance on manual labour and aiding developers in shortening construction timelines and lowering installation costs.
The AURORA PV Cleaning Robot confronts another issue for solar power plant operators: the buildup of dust and dirt on module surfaces, which can diminish sunlight absorption and impact electricity generation.
Conventional cleaning approaches can be hampered by labour availability, challenging terrain, weather conditions and safety issues.
AURORA is crafted to deliver autonomous, regular cleaning while safeguarding module surfaces and lessening long-term maintenance demands.
The robot integrates proprietary self-correction algorithms that let it handle height differences of up to 50 millimetres, enabling continuous cleaning across uneven or complex sites.
Drawing on real-time information from the power plant, solar trackers and environmental sensors, AURORA formulates cleaning routes and adopts preventive measures to steer clear of potential hazards. Its self-powered operating system, which relies on photovoltaic modules, facilitates unattended, cyclical cleaning and curtails the need for routine human intervention.
By keeping module surfaces cleaner, the system seeks to bolster energy generation, enhance maintenance efficiency and assist operators in safeguarding the long-term value of solar assets.
TrinaTracker stated that the arrival of the robots signifies a wider strategic evolution of its Tracker+ smart energy ecosystem, not merely an enlargement of its hardware lineup.
The company is merging AI-powered robotics with digital platforms and digital twin technology to link construction activities, equipment performance and routine maintenance. Operational data collected from its global portfolio will underpin continuous algorithm refinements, aiding the robots in adapting to diverse terrain, extreme weather and shifting structural conditions.
Data produced by the robots will likewise be fed into Trina’s digital platform, backing a more automated approach to solar plant management.
The company strives to help plant owners lower the levelised cost of electricity (LCOE) while maximising asset performance and value. -OGN /TradeArabia News Service
Interactive table based on the Store Companies dataset for this report.
This report provides an in-depth analysis of the Solar Trackers market in the World, including market size, structure, key trends, and forecast. The study highlights demand drivers, supply constraints, and competitive dynamics across the value chain.
The analysis is designed for manufacturers, distributors, investors, and advisors who require a consistent, data-driven view of market dynamics and a transparent analytical definition of the product scope.
This report covers solar trackers, which are electromechanical systems that orient photovoltaic panels or mirrors to follow the sun’s path, maximizing energy capture. The analysis encompasses the market for both single-axis and dual-axis trackers, including horizontal, vertical, tilted, and azimuth variants. It examines their integration across utility-scale, commercial, industrial, agricultural, and specialized installations, providing a comprehensive view of the product segment within the broader solar energy industry.
Solar trackers are not uniquely classified under a single dedicated Harmonized System (HS) code, as they are complex electromechanical assemblies. Consequently, trade data for this market must be aggregated from multiple codes representing their constituent parts and related electrical equipment. This report’s analysis utilizes relevant codes for electric generating sets, machinery parts, diodes/transistors, and electrical control apparatus to construct a representative view of the trade flows for tracker components and integrated systems.
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NX Horizon is flagship product
DuraTrack HZ v3 is key product
Part of Gransolar Group
Known for Genius Tracker
SF7 bifacial tracker is flagship
Major global supplier from China
TrinaTracker brand
Note: Flextracker product line
Acquired by STI Norland
Strong in international markets
Part of the Gonvarri Solar Steel group
Known for fixed-tilt and tracking solutions
Often referred to as GQY
Part of Gonvarri Industries
Acquired by Shanghai Electric
T29 pneumatic tracker technology
Known for Exotrack product line
Part of the Mecanizados Solares group
Supplier to global markets
Major Chinese manufacturer
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In Tashkent, a 402 kW rooftop solar PV system supplies around half of a cold-storage facility’s electricity needs. The company estimates that the 1.72 billion Uzbek soum investment delivers about 600 million soums in annual economic benefits, EastFruit notes, citing Kursiv.
Keeping storage rooms at −15 to −18°C around the clock, throughout the year, is expensive. The pressure is greatest in summer, when temperatures in Tashkent rise above 40°C and refrigeration equipment runs hard. For warehouse operators, electricity is one of the largest operating costs.
Family-owned SABR AGRO INVEST PLUS set out to reduce that bill through on-site solar generation. A 402 kW grid-connected solar PV system was commissioned on the roof of its cold-storage complex in autumn 2024. Nearly two years on, company director Jamoliddin Adilov shared what the system has delivered.
SABR AGRO INVEST PLUS provides warehousing services across around 4,200 sq m of storage space, including approximately 1,800 sq m of refrigerated and freezer rooms. About 1,200 sq m is currently maintained at −15 to −18°C, while roughly 600 sq m operates between 0 and +5°C. The company plans to expand its freezer capacity to 1,500 sq m.
Safia Cafe & Bakery, one of Uzbekistan’s largest confectionery chains, rents around 800 sq m of freezer space to store frozen fruit and berries, including cherries, raspberries and apples. The facility has also added blast-freezing equipment. It can now receive fresh produce, freeze it on site and move it into long-term storage. Adilov estimates that electricity accounts for around 30–40% of the operating costs of this type of business.
Solar Nature designed and installed the system. It comprises 756 panels with a total installed capacity of 402 kW. The grid-connected, or on-grid, system has no batteries: solar electricity first serves the facility’s refrigeration equipment, while any surplus is automatically exported to the grid. The business draws electricity from the grid when solar generation is insufficient or unavailable.
Before designing the system, the project team reviewed the facility’s hourly and seasonal electricity demand, equipment capacity and potential panel locations. The initial design envisaged higher capacity, but it was adjusted to the roof’s available area and structural limits, as well as building and seismic safety requirements. Using the roof also avoided significant shading from nearby buildings and trees, without taking up additional land.
The facility uses around 120 MWh of electricity in July and 126 MWh in August. In those same months, the solar system generates 70–80 MWh. According to Adilov, winter electricity consumption falls by a factor of 2.5 to three. Solar output also declines as daylight hours shorten and cloudy weather becomes more common. For a cold-storage operator, the seasonal match matters: solar generation is highest when the need for cooling is greatest.
In 2025, the complex consumed around 824 MWh of electricity, while the solar system generated 572 MWh—equivalent to almost 70% of annual consumption. The facility did not use all of that output on site. On average, 75–80% of solar generation served its own needs, with the remainder exported to the grid. The system therefore covered an estimated half of the complex’s electricity demand. The actual share varies with the operating load of the rooms and equipment.
The project cost 1.72 billion soums. The company estimates its combined annual economic benefit at around 600 million soums, from both avoided grid purchases and revenue from surplus electricity. Depending on the month, exports to the grid generate around 10–20 million soums. The original payback estimate was approximately 2.5 to three years.
The company did not set out to become an electricity producer. Exporting surplus power adds to the project economics, but the main benefit is lower energy costs for the cold-storage operation.
The system was installed without batteries. At this scale, adding energy storage would have significantly increased the upfront investment and extended the payback period. The company reports no major issues with grid supply, and a diesel generator covers short outages. “We needed a reasonably short payback period so that the system would start delivering real savings quickly,” Adilov says.
Solar generation is only one part of the facility’s energy strategy. The walls, roof and floors of the cold rooms are insulated with polyurethane to limit heat entering from outside. With the doors closed, the rooms can maintain the required temperature for two to three days during a power outage. For cold storage, reducing the amount of energy needed is as important as securing a lower-cost supply.
The system does not require a dedicated full-time employee. A facility electrician monitors it, while a mobile application provides data on generation, site consumption and electricity exported to the grid. The main routine task is cleaning the panels. Because the site is in an industrial area with relatively high dust levels, they are cleaned roughly every two to four weeks, depending on the season. Solar Nature provides technical support. The company says the panels carry a 12-year manufacturer’s warranty and have an expected service life of about 25 years; the inverters have a five-year factory warranty and an estimated service life of 10–15 years. The installer’s warranty covers system components for up to five years, depending on the maintenance agreement.
Calculations under the FAO/EBRD project “Greening the Horticultural Value Chain” estimate that on-site use of solar electricity has avoided around 450–500 tonnes of CO₂ emissions associated with grid electricity since the system was commissioned in autumn 2024. The estimate is based on the facility’s actual generation and self-consumption data. It counts only the solar power used by the business; electricity exported to the grid is excluded.
Uzbekistan’s updated Nationally Determined Contribution, NDC 3.0, sets a target to reduce the carbon intensity of GDP by 50% by 2035 compared with 2010. The document identifies improved energy efficiency and wider use of renewable energy as part of the response. It reports that the energy sector accounted for around 64% of national greenhouse gas emissions in 2022.
SABR AGRO INVEST PLUS is building another block of cold and freezer rooms with a total area of around 1,800 sq m. Most of the new space is also planned for storage at −15 to −18°C. As the facility expands, its electricity demand will rise, allowing more of the current system’s surplus to be used on site. The company plans to install a second rooftop solar system of at least 300 kW on the new building.
The company’s experience illustrates the commercial case for solar in cold storage: the investment began as a way to cut costs, while the reduction in electricity purchases also lowered the carbon footprint of storing produce.
Information for this article was provided by the FAO/EBRD project “Greening the Horticultural Value Chain” in Uzbekistan. Figures for annual economic benefits and payback are the company’s estimates.
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Suryamitra: Training Uttar Pradesh’s youth for jobs in the solar energy sector  India Today
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The Autumn issue of 2026 is available now! The new issue begins with a regional report on Asia Pacific, looking at the region’s transition from building capacity to building systems. The issue also explores topics such as offshore wind foundations, solar maintenance, training the new workforce, inspection & maintenance, and more! With insights from experts such as Everllence, BW Ideol, EM&I, Watson Farley & Williams, and many more, make sure to check out this issue now.
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Elgin, a fully integrated, utility scale solar and storage independent power producer (IPP), has acquired Kilderry solar farm, a 40 MWp solar photovoltaic (PV) project in County Kilkenny, from BayWa r.e.
The project is located in close proximity to a number of Elgin’s existing development assets and further strengthens the company’s growing renewable energy platform in Ireland.
The acquisition follows Elgin’s recent acquisition of the ~200 MW Blackhall solar farm in County Meath and reflects the company’s continued commitment to investing in high-quality renewable energy projects that support Ireland’s transition to a low-carbon energy system.
Dermot Kelleher, CEO of Elgin, commented: “Kilderry is a strong addition to our Irish portfolio and further demonstrates our commitment to growing our presence in Ireland. Alongside Blackhall, this acquisition reflects our strategy of combining selective mergers and acquisitions with our organic development pipeline to create value and accelerate the delivery of renewable energy infrastructure. We see opportunities to replicate this approach across our portfolio, identifying strategically-located projects that complement our existing assets and enhance overall project economics.”
Gemma Hamilton, Managing Director at BayWa r.e. UK Ltd., added: “Kilderry reflects both the quality of projects we are bringing forward and the strength of our position in the Irish market, where we continue to invest in the growth and delivery of our renewable energy portfolio. Given the project’s location and particular strategic fit with Elgin’s existing assets in the area, this transaction creates a unique opportunity to accelerate Kilderry solar farm towards delivery under Elgin’s ownership. We remain firmly focused on progressing our wider 1 GW solar pipeline and playing a significant role in the continued growth of renewable energy across Ireland.”
The acquisition reinforces Elgin’s position as a leading renewable energy developer and investor in Ireland, with a growing pipeline of solar and storage projects supporting the country’s energy transition and long-term energy security.
 
 
The Autumn issue of 2026 is available now! The new issue begins with a regional report on Asia Pacific, looking at the region’s transition from building capacity to building systems. The issue also explores topics such as offshore wind foundations, solar maintenance, training the new workforce, inspection & maintenance, and more! With insights from experts such as Everllence, BW Ideol, EM&I, Watson Farley & Williams, and many more, make sure to check out this issue now.

Assistant Editor
Abby joined Palladian after graduating with a degree in English Literature from the University of Warwick. She enjoys reading, listening to music, going to concerts, and hanging out with her dog, Cooper.

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Chinese solar module manufacturer Risen Energy has unveiled a new heterojunction (HJT) solar module featuring a dual-layer optical design to reduce glare.
The company said the new product is part of its Hyper-ion series and is designed for installations with stringent glare-control requirements, such as those near airports and residential areas, where reflected sunlight may cause visual disturbances.
“Risen Energy’s capabilities in photovoltaic optical safety extend beyond product development. It is also the principal drafting organization behind T/CPIA0119-2025, the group standard for Photovoltaic Module Glare Testing Method,” the manufacturer said in a statement. “The launch of Hyper-ion anti-glare module represents the translation of this accumulated technical and standardization expertise into a commercial product.”
According to Risen Energy, the module uses a dual-layer optical design combining a micron-scale matte glass surface, produced through a process it calls “nanocrystalline phase reconstruction,” with technology to suppress internal reflections. The company did not provide further technical details about the process.
The manufacturer said tests conducted by Germany’s TÜV Rheinland showed a maximum daylight glare probability (DGP) of 0.30, below the Class AAA threshold of 0.35, and a maximum glare luminance of 3,463.94 cd/m², compared with a limit of 20,000 cd/m². The module also achieved a specular reflectance as low as 0.85%, according to the company.
The RSM132-8-710-730BHDG module comes in five versions, with power outputs of 710 W, 715 W, 720 W, 725 W and 730 W. Their conversion efficiencies range from 22.9% to 23.5%, while open-circuit voltages range from 50.01 V to 50.33 V and short-circuit currents from 18.00 A to 18.38 A.
The bifacial module features 132 HJT cells and measures 2,384 mm × 1,303 mm × 33 mm. It weighs 37.5 kg and features 2 mm anti-glare glass on the front and 2 mm heat-strengthened glass on the rear, along with an anodized aluminum alloy frame.
Under bifacial nameplate irradiance conditions, with rear-side irradiance of 135 W/m², the module delivers between 796 W and 818 W, according to the manufacturer’s specifications. With a 10% rear-side power gain, its equivalent power output ranges from 781 W to 803 W.
The panel has a temperature coefficient of -0.24%/C for maximum power, an operating temperature range of -40 C to 70 C, and a maximum system voltage of 1,500 V. It can withstand mechanical test loads of up to 5,400 Pa on the front and 2,400 Pa on the rear, depending on the installation method.
Risen Energy offers a 15-year product warranty and a 30-year linear power output warranty. The company specifies an annual degradation rate of 0.3% over 30 years, with guaranteed power output of 90.3% at the end of the warranty period.
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NEW WILMINGTON, Pa – I get many questions about the solar panel sitting beside the tiny house, and it sparked my interest to learn more about it myself. I sat down with Dr. Helen Boylan-Funari to gather some information on the Tiny House Solar Panel.
Q: “Was the solar panel constructed at the same time as the tiny house, or was it installed as a project after the tiny house was built?”
A: “The solar panel was installed as an educational resource and sustainability project in 2019 about two years after the tiny house was constructed in 2017.”
Q: “How does the solar panel operate and is there anything specific we should know?”
A: “The system is made up of polycrystalline, monocrystalline, and thin film solar panels. The system feeds into the power grid, and not just to the tiny house itself.”
Polycrystalline, monocrystalline, and thin film solar panels all have differences in uses, efficiencies, and lifetimes. 
Polycrystalline solar panels are made of photovoltaic cells made up of silicon crystals of different sizes.  The solar panels convert sunlight energy at around a 15%-19% efficiency; the panels are best used for large residential roofs and have a lifetime of around 25-35 years.
Monocrystalline solar panels contain photovoltaic cells that are made of silicon crystals of relatively the same size. These panels convert sunlight energy at a 20%-24% efficiency; they’re best used for limited roof space and have a lifetime of 25-30+ years.
Thin film solar panels are made up of thin layers of microscopic layers of light absorbing materials. These are made by spraying layers of light absorbing materials rather than using solid silicon crystal wafters like what is used in monocrystalline and polycrystalline solar panels. These panels convert energy around 10%-18% efficiency, however, they are more efficient at picking up solar rays on cloudy days. These panels are best used for RV or boat setups and have a lifetime of 10-20 years.
The system beside the tiny house is made up of all three types, polycrystalline, monocrystalline, and thin-film panels. The solar panel stands to the left of the tiny house and is on pole mount with a manual tilting system. The panel tilts throughout the day to maximize the amount of sunlight energy available for the solar panel system. The power generated feeds into the surrounding power grid, not the tiny house itself.
Even though the solar panel system beside the tiny house doesn’t power the tiny house directly, I do believe that areas that get more sunlight more often could use a solar power system to adequately provide electricity for a tiny home setup.
The tiny house solar panel has its own data website that you can explore using this link:https://enlighten.enphaseenergy.com/web/RnMR1593616/today/graph/hours?public=1
Solar panels are compact and prove to be efficient in areas that get a lot of sunlight yearly. This practice could bring more of a reality to a more self-sustainable way of living!
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A working group under the European Solar Manufacturing Council (ESMC) launched an initiative to cover the full solar value chain, alongside adequate market protection against systemic overcapacity, foreign subsidies and dumping. They are asking for support for investment and operations to enable scaling and attract private capital.
More than 35 companies and organizations from Austria, Belgium, France, Italy, the Netherlands, Spain, Germany, Sweden, Switzerland and the United Kingdom sent a joint letter and position paper to the European Parliament, European Council and member states.
“Module assembly alone does not create resilience. The real industrial value, technological know-how and innovation capacity are captured upstream in polysilicon, ingots, wafers and cells. If Europe wants technological sovereignty, it needs the entire value chain, not only its final assembly stage, they said.
In 2024, Europe set itself the ambitious target of manufacturing 40% of its annual solar demand at home by 2030 – roughly 30 GW per year – across the whole value chain, the group recalled. Even in the segment of modules, there is just 12 GW of annual output.
Solar is the cheapest source of electricity available to European consumers, yet the technologies and components that create most of the value, know-how and strategic importance of the solar supply chain are almost entirely sourced from outside Europe, the signatories pointed out.
On the brighter side, at least 38 specialised European machine builders still cover almost every process step
“Chinese production is increasingly being relocated to third countries, while a growing number of countries are replicating the same model: generous industrial subsidies, protective measures, lower labour and environmental standards, and state-backed support throughout the value chain. Rebuilding domestic manufacturing is not about protectionism; it is about reducing strategic dependencies and ensuring that the benefits of Europe’s energy transition remain in Europe,” the position paper reads.
Europe has more than 75 PV module assemblers, but only a handful of companies producing cells or gearing up to produce them at a gigawatt scale, or making ingots and wafers and polysilicon.
A chapter of the paper is devoted to production equipment. “At least 38 specialised European machine builders still cover almost every process step – for several steps, European suppliers are the only alternative to Chinese offers worldwide. Many of them also serve the semiconductor industry,” the document reads.
European technology competence is the precondition for rebuilding PV production at all, the paper’s authors argue. The signatories are calling for a defined share of manufacturing support to be linked to European equipment.
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With the Soltech portfolio, Alight’s solar and storage development pipeline in the Nordics grows to more than 5 GW.
Alight, a leading Nordic solar developer and independent power producer, is taking over the utility-scale development portfolio of Soltech Energy Solutions, a subsidiary of Soltech Energy Sweden. The transaction has been completed following approval from the Inspectorate of Strategic Products (ISP). The portfolio spans across electricity price areas SE3 and SE4 in southern Sweden.
“This acquisition further cements Alight’s position as one of the leading solar PV players in the Nordics” said Warren Campbell, CEO at Alight. “With over 5 GW now in our pipeline, we have the scale to keep growing in Sweden for years to come. A portfolio with secured land, permits in progress and room for battery storage lets us reach ready-to-build faster than greenfield development would allow.”
Alight will lead the continued development of the projects through permitting and grid connection processes towards the next phase where they will be ready-to-build. The projects will be developed for long-term power purchase agreements (PPAs), under which Alight builds, owns and operates the solar parks and sells the electricity to commercial and industrial customers at a fixed, long-term price.
“We have spent several years building this portfolio and taking the projects from early development to today’s level of maturity” added Christoffer Caesar, CEO of Soltech Energy Solutions. “The projects are now entering a phase where a long-term investor is better placed to take them towards investment decision and construction. We look forward to continuing our good collaboration with Alight for many years to come.”
The acquisition builds on Alight’s position as one of the leading solar players in the Nordics. Alight recently inaugurated the 215 MWp Lidsø Solar Park on Lolland in Denmark, one of the largest solar parks in the Nordics, and in September the 101 MWp Eurajoki Solar Park in Finland with Autoliv. In 2024, Alight also acquired the 11 MW Ramsjöholm solar park in Falkenberg, developed and commissioned by Soltech.
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The Autumn issue of 2026 is available now! The new issue begins with a regional report on Asia Pacific, looking at the region’s transition from building capacity to building systems. The issue also explores topics such as offshore wind foundations, solar maintenance, training the new workforce, inspection & maintenance, and more! With insights from experts such as Everllence, BW Ideol, EM&I, Watson Farley & Williams, and many more, make sure to check out this issue now.
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The European Investment Bank (EIB) is increasing financial support for a major renewable-energy project in the eastern Austrian state of Burgenland with a €20 million loan to the region’s electricity supplier.
The new credit to Burgenland Energie follows a €250 million EIB loan in 2025 to the company for the project, which involves an expansion of wind and solar power. 
Burgenland Energie is Austria’s largest wind and solar photovoltaic (PV) company and has doubled its renewable energy generation capacity over the past five years. To achieve energy independence for Burgenland by 2030, the company plans to expand capacity by up to a further 2000 MW, equivalent to around 20% of Austria’s current wind and solar capacity. In addition to directly financing Burgenland Energie, the EIB has supported loans from Erste Bank and Landesbank Baden-Württemberg totalling €100 million for the project. 
EIB Vice-President, Karl Nehammer, responded: “Investments like these are making Europe’s energy independence a reality while strengthening our industrial base and the fight against climate change. Energy is now a question of security and competitiveness. Burgenland shows what can be achieved when ambitious regional projects, long-term finance and European support come together.” 
The EIB financing is supported under the EU’s InvestEU programme. The project also advances the REPowerEU plan to reduce Europe’s dependence on fossil fuels and accelerate the deployment of renewable energy. 
Stephan Sharma, CEO of Burgenland Energie, added: “Austria and Europe need more renewable energy produced domestically. Five years ago, Burgenland was 50% energy-independent. Today, that figure has already reached 75%. This success demonstrates what is possible when you consistently believe in a vision and turn it into reality, step by step. Our goal remains unchanged: 100% energy independence and climate neutrality by 2030. The additional financing from the EIB sends a strong signal that Europe believes in this path and shares this vision. Together, we are demonstrating that the answer to the energy crisis, the climate crisis, and dependence on fossil fuel imports lies in Europe’s renewable energy sources. Burgenland can show what Europe’s energy future could look like.” 
The ambition to make Burgenland one of the world’s first climate-neutral and energy-independent regions by 2030 encompasses around 40 sites across the region. The total investment is estimated at approximately €1.5 billion. Other financing partners include the Austrian banks UniCredit Bank Austria and Raiffeisen Bank International, the Austrian insurer Wiener Städtische, and the German financial services group Talanx Group.
Assistant Editor
Abby joined Palladian after graduating with a degree in English Literature from the University of Warwick. She enjoys reading, listening to music, going to concerts, and hanging out with her dog, Cooper.

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U Mobile has signed a Memorandum of Understanding with HLGY Energy to explore smart solar farm solutions built on U Mobile’s ULTRA5G network. The idea is to combine private 5G connectivity, AI, and industrial automation to improve how solar farm operations are monitored and managed.

HLGY Energy is a Malaysian renewable energy developer working on utility-scale solar and integrated energy solutions under Malaysia’s Corporate Renewable Energy Supply Scheme (CRESS), including the Kedah Rubber City Solar Power Plant. Under the MoU, the two companies will explore deploying a private 5G network as the digital backbone of the farm, with U Mobile acting as HLGY’s innovation, automation, and communications infrastructure provider.
That dedicated, secure connection would support applications like autonomous drone inspections, AI-powered analytics, and smart CCTV surveillance. In practice, that should mean remote monitoring, earlier detection of problems, and faster responses when maintenance is needed. It also fits U Mobile’s enterprise growth strategy, applying ULTRA5G, which Ookla and Opensignal have independently recognised for speed and availability, to the renewable energy sector.
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The solar manufacturer received orders for 2,308 MW of solar cell and module supplies, alongside engineering, procurement and construction (EPC) projects, as it expands domestic manufacturing capacity.
Premier Energies has secured fresh orders worth Rs 4,001 crore in the July-September quarter of FY27, strengthening its order pipeline as India’s solar manufacturing sector expands to meet rising demand for domestic clean-energy equipment. The orders cover 2,308 megawatts (MW) of solar cell and module supplies, along with engineering, procurement and construction (EPC) project execution. The company said the order inflow includes contracts from power producers, module manufacturers, EPC companies and other customers, excluding orders from the retail market segment.
The latest wins come as the company increases production capacity and invests in newer solar technologies to serve utility-scale projects and other market segments. The expansion also reflects the broader shift towards domestic solar manufacturing as India seeks to reduce dependence on imported equipment and strengthen its renewable energy supply chain.
Manufacturing Capacity Expands
Premier Energies’ total solar module manufacturing capacity has nearly doubled to 11.1 gigawatts (GW), while its solar cell manufacturing capacity has increased from 3.6 GW to 10.6 GW. The increase in cell capacity follows the commissioning of a 7 GW tunnel oxide passivated contact (TOPCon) solar cell manufacturing facility at Naidupeta in Andhra Pradesh in September 2026. TOPCon is a high-efficiency solar cell technology designed to improve energy conversion performance.
The company is also pursuing backward integration to strengthen its position across the solar manufacturing value chain. Its expansion plans include a proposed 10 GW ingot-wafer manufacturing plant and 12 gigawatt-hours (GWh) of battery container manufacturing capacity, broadening its presence beyond cells and modules. Such investments are becoming increasingly important as manufacturers seek to secure supplies of key components, improve operational efficiency and manage exposure to international supply-chain disruptions.
Domestic Solar Demand Drives Investment
India’s renewable energy expansion is creating opportunities for domestic equipment manufacturers, supported by government efforts to scale clean-energy capacity and strengthen local production. The country has set a target of 500 GW of installed non-fossil fuel electricity capacity by 2030. However, capacity expansion also brings commercial risks. Solar manufacturers must balance new production lines against demand, pricing pressure, technology upgrades and the timely execution of customer orders.
Industry analysts generally assess order inflows alongside manufacturing utilisation, margins, customer concentration and delivery schedules. A large order pipeline can improve revenue visibility, but its contribution to profitability depends on execution costs, contract terms and market conditions. For Premier Energies, the latest order inflow indicates continued demand for its solar products and EPC capabilities. The company’s ability to convert these orders into deliveries while maintaining margins will remain important as India’s solar manufacturing capacity grows.
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Three out of four eligible voters in Germany oppose cuts to subsidies for new rooftop solar photovoltaic installations, according to a representative YouGov survey commissioned by the German Solar Industry Association (BSW-Solar).
The findings show that 75% of respondents support maintaining or increasing financial incentives for solar installations on buildings, while only 13% favor reducing them.
Conducted between October 2 and 5, 2026, among 2,105 eligible voters, the survey highlights widespread support for rooftop solar incentives across Germany’s political spectrum, as lawmakers consider changes to the country’s renewable energy regulatory framework.
Among voters of the Christian Democratic Union and Christian Social Union (CDU/CSU), 74% support maintaining or increasing subsidies, compared with 77% among Social Democratic Party (SPD) voters.
Support reaches 90% among Alliance 90/The Greens voters, 83% among supporters of The Left, and 63% among Alternative for Germany (AfD) voters.
The survey comes as discussions over the 2027 reform of Germany’s Renewable Energy Sources Act (EEG) and a legislative package addressing electricity grids enter a decisive phase in the Bundestag.
Both legislative proposals were examined during two public hearings held by the Bundestag’s Economic Affairs Committee this week.
BSW-Solar argues that the survey results demonstrate the importance of maintaining a stable support framework for rooftop photovoltaic installations.
Carsten Körnig, Managing Director of BSW-Solar, said the findings send a clear message to lawmakers about the importance of reliable solar incentives.
He also emphasized that additional solar installations could help Germany reduce its dependence on costly energy imports while contributing to lower electricity costs.
According to the association, restricting one of the country’s most affordable domestic energy sources would undermine efforts to address energy security and climate challenges.
BSW-Solar is urging lawmakers to revise three key aspects of the proposed regulatory changes.
First, the association warns against reducing subsidies for rooftop photovoltaic installations and introducing additional electricity marketing obligations, arguing that such measures could discourage investment in distributed solar generation.
Second, it calls for avoiding new regulatory requirements that could unnecessarily increase the costs of utility-scale solar projects.
Third, BSW-Solar advocates accelerating the deployment of battery energy storage systems (BESS) and the digitalization of electricity grids to help reduce network expansion costs.
The association argues that these measures would provide a more effective response to grid congestion than restrictions that could prevent renewable energy projects from being developed in constrained network areas for several years.
Its proposals aim to support continued renewable energy deployment while improving grid flexibility and managing infrastructure costs.
Meanwhile, companies, employees, industry associations and civil society organizations are preparing to demonstrate in Berlin on Friday, October 9, calling for policies that support renewable energy expansion.
The rally, scheduled to begin at 2:00 p.m. on the lawn outside the Reichstag building, will take place under the slogan “Renewable Energy: Expand, Don’t Hold Back!”
BSW-Solar has also called on its members and supporters to participate in the demonstration.
Körnig stressed that the Bundestag now has an opportunity to establish reliable regulatory conditions for the next phase of Germany’s energy transition and facilitate investment in solar energy rather than creating additional barriers.
The YouGov survey also found that 13% of respondents were undecided or did not provide an answer. Minor discrepancies in the percentages are due to rounding.
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