Interconnection Standard
State-level rules governing how solar and battery systems connect to the utility grid, including application requirements, timelines, fees, insurance, and technical standards (IEEE 1547).
Why It Matters
Some states have streamlined interconnection for small systems (under 25 kW) while others require lengthy engineering studies. This affects your timeline from signed contract to producing power.
Related Terms
Interconnection
The process of connecting your solar system to the utility grid, requiring utility approval and inspection.
PTO (Permission to Operate)
Formal approval from the utility allowing a grid-connected solar system to be energized and begin exporting electricity. PTO is the final step after installation and inspection.
AHJ (Authority Having Jurisdiction)
The local government entity (city, county, or township) responsible for permitting, inspecting, and approving solar installations and other electrical/building work.