Yes. A properly designed BESS can provide backup power for critical loads during grid outages. Backup performance depends on battery capacity, inverter power, system design, load size, switching equipment, and backup duration requirements. For mission-critical use, the BESS should be designed with the full electrical system in mind.

Peak shaving means using stored battery power during periods of high electricity demand. By reducing the highest demand peaks, a facility may lower demand charges and reduce stress on the grid. This is one of the most common applications for commercial and industrial battery energy storage systems.