Commercial and industrial businesses can use solar and battery storage to manage electricity costs while maintaining reliable operations, according to SolaX Power.
Electricity bills can reflect not only the amount of energy a facility consumes, but also its highest demand during measured intervals and the time of day that power is used. For sites with sharp demand peaks, time based tariffs, limited solar exports or growing electric vehicle charging loads, these factors can make costs difficult to control.
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SolaX says its integrated commercial and industrial offering brings together photovoltaic systems, energy storage, hybrid inverters, energy management and electric vehicle charging. The combination is designed to help businesses control when electricity is generated, stored and consumed.
Storage for demand and tariffs
Battery storage can discharge during periods of high demand to reduce the amount of power a site draws from the grid. It can also store electricity when prices are lower or solar generation is abundant, then supply power when it is more valuable.
The company’s ESS TRENE liquid cooled system is specified with 261 kWh of storage and 125 kW of output, with peak output of 137.5 kW. SolaX says the system uses lithium iron phosphate cells and liquid thermal management, with cell temperature differences controlled below 3°C.
For sites seeking an air cooled option, SolaX lists an ESS TRENE configuration rated at 100 kW and 215 kWh. The company says the system includes an IP55 rated cabinet, modular architecture and support for time of use scheduling.
The appropriate system depends on a facility’s load profile and electricity tariff. Businesses need to assess both the power required to manage short demand peaks and the energy needed to sustain discharge for the duration of those peaks.
Using more onsite solar
Where grid export is restricted or poorly compensated, storing excess midday solar generation can help businesses use more of the electricity they produce. The stored energy can then be used later, reducing purchases from the grid.
SolaX’s X3 AELIO hybrid inverter is designed to coordinate solar generation and battery storage across different operating modes, including self-consumption and peak shaving. The company says the inverter is ready for virtual power plant applications and can switch between on grid and off grid operation in less than 10 milliseconds.
Its 49.9 kW model is specified with up to 200% PV input, a maximum power point tracking voltage range of 160 to 950 V, and multiple trackers. These features are intended to accommodate commercial rooftops with different orientations or partial shading.
Coordinating electric vehicle charging
Electric vehicle charging can add to a site’s peak demand, particularly when several vehicles charge at the same time. SolaX says coordinated charging can prioritise available solar power, use batteries to smooth short term demand and schedule grid charging for lower cost periods.
The company presents its solar, storage and charging technologies as an integrated system, rather than separate assets. Actual savings will depend on each site’s load profile, tariff, export arrangements, equipment configuration and control settings.
SolaX recommends assessing interval electricity data and tariff rules before sizing a system. Businesses should also plan for export limits, backup requirements and possible future additions such as more solar capacity, production equipment or vehicle chargers.
Author: Bryan Groenendaal
For enquiries on the African continent, contact Kendall at SolaX Power South Africa:
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