BESS Tech II

Position Summary

The Battery Energy Storage Systems (BESS) Technician II is responsible for advanced operation, inspection, maintenance, and troubleshooting of BESS facilities. Building on the foundational skills of a Level 1 Technician, this role requires deeper technical expertise, independent problem-solving, and the ability to lead safety-critical work. The Technician II supports commissioning, system optimization, and reliability improvements, while mentoring junior technicians and promoting a strong safety culture.

The ideal candidate will bring a strong electrical foundation, with experience in BESS, utility, power generation, substation, transmission, or industrial electrical environments. Experience with high-voltage electrical systems, transformers, switch gear, protective relays, grounding systems, commissioning, troubleshooting, and predictive maintenance is highly desirable.

• Perform advanced preventive, predictive, and corrective maintenance on BESS equipment, including batteries, inverters, transformers, protection systems, switch gear, and auxiliary systems.
• Lead troubleshooting of electrical, mechanical, and control system issues, including root cause analysis and corrective action planning.
• Conduct and document complex testing, calibrations, and diagnostics of high-voltage and low-voltage systems.
• Perform or support high-voltage switching, electrical isolation, grounding, and equipment commissioning activities in accordance with established procedures and safety requirements.
• Troubleshoot and maintain electrical equipment and systems, including transformers, motors, switch gear, protective relays, grounding systems, and associated controls.
• Review and update plant technical references, prints, drawings, and maintenance procedures.
• Act as Permit Issuer and Control Authority for LOTO, outage coordination, and safety documentation.
• Administer and oversee Job Hazard Analyses (JHAs), Hot Work Permits, Confined Space Permits, and Safe Work Permits.
• Support commissioning, start-up, and acceptance testing of new or upgraded BESS facilities.
• Perform advanced inventory planning, including identifying critical spare parts and recommending stock levels.
• Operate hand tools, power tools, test instruments, forklifts, aerial lifts, and other site equipment in accordance with training and safety protocols.
• Provide technical guidance, mentorship, and support to Level 1 Technicians and new team members.
• Collaborate with engineers, OEM representatives, electrical testing contractors, and remote operations personnel to ensure system performance and reliability.

• Assist with troubleshooting, maintenance, and repair of non-BESS plant equipment.
• Participate in root cause failure analysis (RCFA) and recommend reliability improvements.
• Support digital systems, including SCADA, instrumentation and controls (I&C), CMMS, and remote monitoring platforms.
• Assist in developing and improving maintenance procedures and best practices.
• Lead or support emergency response activities during outages or abnormal system events.
• Provide feedback on system design, upgrades, and modifications based on field experience.
• Support electrical testing, commissioning, and predictive maintenance activities performed by internal personnel and third-party contractors.
• Perform other duties as assigned.

• Reports directly to the O&M Manager.
• Provides mentorship and technical guidance to Level 1 Technicians.
• Works closely with engineers, OEMs, commissioning teams, electrical testing contractors, and remote operations staff.

• High school diploma or equivalent required.
• Associate degree in Electrical, Mechanical, or related technical field preferred.
• Equivalent military training,…