Solar interconnection is the technical and procedural process of connecting a rooftop or ground-mounted solar system to the utility grid. This involves installing specialized equipment like inverters and disconnect switches that allow bidirectional power flow between the solar system and the grid. Interconnection ensures safety, compliance with IEEE 1547 standards, and proper meter configuration.
Technical Requirements
Systems must include a utility-grade disconnect switch, properly rated inverters (typically 95 to 98 percent efficient), and anti-islanding protection to prevent equipment damage during grid outages. Electrical specifications vary by utility but generally require equipment rated for the local service voltage and fault capacity, often 120/240V for residential installations.
Timeline and Process
Interconnection typically takes 2 to 8 weeks from application submission to final approval and energization. The process includes utility review, possible engineering study, equipment inspection, and final meter installation. Expedited timelines apply for smaller systems under 10 kW in many jurisdictions under interconnection fast-track programs.