CA AB1124

Expands the definition of "solar energy system" to include solar racking, solar mounting, elevated solar support structures (such as solar carports and canopies), and integrated photovoltaic devices, regardless of whether they are on the ground or on a building.

Allows solar energy systems to serve multiple utility retail customers on the same, adjacent, or contiguous properties, provided they are not designed for procurement of electricity by an electric utility.

Defines "residential permit fee" as charges for solar systems installed on single- or two-family dwellings, capping photovoltaic system fees at $450 plus $15 per kilowatt above 15kW.

Defines "commercial permit fee" as charges for solar systems on properties with more than two family dwellings or other commercial applications, capping photovoltaic system fees at $1,000 for systems up to 50kW, then $7 per kilowatt between 51-250kW, then $5 per kilowatt above 250kW.

Allows cities and counties to exceed fee caps if they provide substantial evidence of reasonable costs through written findings and adopted resolutions or ordinances, with the section set to expire January 1, 2025.