Energy storage & batteries

Energy storage & batteries store electrical energy for later use, buffering solar generation or grid supply against demand.

Selection centres on usable capacity in kWh, battery chemistry, and the inverter or charge controller it must pair with. Lithium iron phosphate (LiFePO4) dominates stationary storage for its cycle life and thermal stability, while depth of discharge and round-trip efficiency determine real-world usable energy.

• Usable capacity — sized in kWh against daily load or backup runtime required
• Chemistry — LiFePO4 for cycle life and safety, lead-acid for lower upfront cost
• System integration — voltage and communication protocol must match the inverter or hybrid controller