Conduct on-site routine maintenance, service, troubleshooting, and repair of solar photovoltaic facilities. Perform DC and AC testing, including polarity, open circuit voltage, grounding continuity, communication, insulation resistance testing, and I-V curve tracing. Maintain vehicle, tools, meters, and truck stock. Create service reports and maintain spare parts inventory. Identify safety hazards and take appropriate action. Create operability and major issue/downtime reports. Respond on-call for emergencies.