To better understand BESS costs, it's useful to look at the cost per kilowatt-hour (kWh) stored. As of recent data, the average cost of a BESS is approximately $400-$600 per kWh. ers lay out low-voltage power distribution and conversion for a b de ion – and energy and assets monitoring – for a utility-scale battery energy storage system entation to perform the necessary actions to adapt this reference design for the project requirements. ABB can provide support during all. With nearly 90,000 employees in over 50 countries, TE Connectivity (TE) makes connections the world relies on to work eficiently every day. TE PROVIDES INDUSTRY-LEADING ELECTRICAL CONNECTION SOLUTIONS. The nominal power rating of the PCS block is 225 kVA,with a maximum peak power in the peak shaving mode of 275 kW.