What is the difference between kW and kWh in a BESS?

Kategorie: BESS Sizing

kW measures power, or how much electricity the system can deliver at one time. kWh measures energy capacity, or how much electricity the system can store. For example, a 125 kW / 261 kWh BESS can deliver up to 125 kW of power and store 261 kWh of energy.