Works under general supervision to independently perform preventive maintenance and routine corrective maintenance, diagnose and repair common faults across electrical, controls, communications, and balance-of-plant systems within assigned scope, and maintain complete service and CMMS documentation. • Independently execute scheduled and unscheduled preventive and corrective maintenance on BESS equipment and balance-of-plant within assigned scope, including PCS/inverter interfaces, battery racks/enclosures, HVAC/auxiliary systems, transformers (as applicable), switchgear, and related controls.