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The eighth edition of kWh Analytics’ Solar Risk Assessment identifies equipment-triggered fires, penalties from regulators, and battery measurement errors as the newest challenges to returns from renewable energy assets.
According to the report, although severe weather continues to be a significant driver of financial losses, the emerging danger comes from within the facility itself. The sector has traditionally concentrated on protecting against wildfires, yet merely 4% of photovoltaic fire loss incidents happen in zones with high wildfire risk. Conversely, 84% of fire incidents are brushfires caused by equipment, meaning the solar hardware itself is the ignition source.
Nextpower points out a critical shortfall in present maintenance routines: 79% of high-risk photovoltaic connector and fuse problems identified show no detectable heat signature during inspections. Thermal drones, commonly used to find module-level defects, frequently miss balance-of-system issues where no measurable heat exists prior to failure. Nextpower contends that high-resolution visual checks must supplement thermography to lower the occurrence of fires.
Test results from Kiwa PVEL and Kiwa PI Berlin reveal that 30% of manufacturers experience junction box failures during reliability testing, which elevates fire risk across entire portfolios. The report advises stakeholders to emphasize production oversight and pre-shipment inspections to confirm manufacturing quality.
GameChange Solar reports that current IEC 62782 standards for single-axis tracker design underestimate the cyclical loading encountered during an actual hurricane by a factor of eight. Modeling conducted by CPP Wind Engineering Consultants for GameChange Solar indicates that a site during Hurricane Ian likely endured over 8,000 cycles with pressures reaching 1,400 Pa, whereas the standard mandates only 1,000 cycles at 1,000 Pa. Tests demonstrated that common rail designs passed the standard test but developed visible cracks under more realistic cyclical loading conditions.
Vaisala Xweather reports that in 2025, 32% more US wind turbines were struck by four or more lightning strokes compared to the prior year, underscoring the need for stronger grounding and protection measures.
Hail remains the costliest type of insured loss for the solar industry. Research from kWh Analytics and GroundWork Renewables shows that standard 2 mm glass modules are no longer adequate for 52% of the contiguous United States to maintain risk below an acceptable loss threshold. In the highest-risk zones, covering 13% of the US, both hail-resistant modules and robust stow protocols are necessary, with robust stow defined as achieving a tilt of 70 degrees or more during a storm. Software-based stow can fail if operational procedures are insufficient. GroundWork Renewables testing confirms that hail-resistant constructions using 2.5 mm or 3.2 mm glass have significantly lower failure probabilities.
Above Surveying examined data from over 3,000 assets and discovered that thermal anomalies do not follow a linear degradation trajectory. Defect rates, including cell cracks and busbar peeling, increase markedly after year seven, creating substantial long-term financial risk for projects that assume a constant degradation rate over a 30-year lifespan.
ACCURE Battery Intelligence finds that state-of-charge inaccuracies in lithium iron phosphate (LFP) batteries can cost operators more than $1 million per GWh each year in dynamic markets such as ERCOT, because the flat voltage curve makes it challenging for standard management systems to provide a dependable view of available energy. PowerUp reports that 75% of utility-scale battery sites show early signs of HVAC-related thermal anomalies, which can lead to thermal runaway if not addressed.
Crux reports that new rules regarding prohibited foreign entities take effect in 2026, yet only 38% of developers feel fully prepared to comply. Vaisala notes that failing to meet heightened Federal Energy Regulatory Commission cybersecurity and regulatory standards can result in penalties of $1 million per day for renewable energy developers. CAC highlights that tax insurance underwriters are tightening conditions, with 75% of underwriters refusing to cover valuation step-ups above 25%, which creates a limitation for project financing.
The report concludes that as the industry expands, risks are becoming more localized, more technical, and more costly, necessitating a strategy grounded in detailed, field-verified data.
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