The California Solar Initiative (CSI) is the solar rebate program in California for customers of the investor-owned utilities - Pacific Gas and Electric (PG&E), Southern California Edison (SCE), and San Diego Gas & Electric (SDG&E). Through the CSI, the California Public Utilities Commission is providing $2.1 billion to businesses, nonprofit organizations, public agencies and homeowners to help lower their energy costs, reduce their reliance on fossil fuel-fed power plants, and create a sustainable energy future through the use of solar technology.

The CSI program is directly administered by each investor-owned utility, with the exception of SDG&E, whose CSI program is administered by the California Center for Sustainable Energy (CCSE), an independent nonprofit organization.

The rulebook of the CSI Program, the CSI Program Handbook, describes the detailed requirements for receiving incentives for the installation of solar energy systems under the CPUC-managed incentive programs: solar photovoltaic (PV), solar thermal (solar water heating), multiple-family affordable solar housing (MASH), single-family affordable solar housing (SASH), and other solar technologies.

For more information on the CSI incentive programs administered by CCSE, please click on the following buttons:

RESIDENTIAL SOLAR ELECTRIC	NON-RESIDENTIAL SOLAR ELECTRIC
CSI-THERMAL SOLAR WATER HEATER	MULTIFAMILY AFFORDABLE SOLAR HOUSING

For more information on the California Solar Initiative and solar photovoltaic technologies, please see the “CSI Menu” on the left of this page..