Solar batteries are designed to store excess electricity generated by rooftop or small commercial solar systems, making clean energy available when the sun isn’t shining. Unlike large utility-scale Battery Energy Storage Systems (BESS), solar batteries are modular, compact, and tailored for homes and small businesses. They typically integrate battery cells, a battery management system (BMS), and often an inverter in a single turnkey unit, simplifying installation and operation.
Most solar batteries today use advanced lithium-ion chemistries—particularly lithium iron phosphate (LFP)—which provide high cycle life, safety, and efficiency. These systems enable daily self-consumption, backup power during outages, and cost savings through time-of-use energy management. They also play a role in emerging virtual power plants (VPPs), where distributed batteries are aggregated to provide grid services.
While distinct from the larger BESS systems used at solar farms and substations, solar batteries are part of the same energy storage continuum—scaling from residential to utility level. Together, they represent a cornerstone of electrification, grid modernization, and energy resilience.