Welcome to the  California Energy Almanac

California Solar Photovoltaic Statistics & Data

California Solar Initiative

The California Solar Initiative (CSI) incentive program is for existing homes and buildings and is under the direction of the California Public Utilities Commission. The program administrators are Pacific Gas and Electric, Southern California Edison, and the Center for Sustainable Energy (San Diego area).

Statistics As of December 31, 2008

  • 18,290 applications, which equates to 322 megawatts (MW) of installed capacity.
    This includes the Self-Generation Incentive Program projects funded prior to 2007 but that came on line in 2007 or 2008.
  • Of the total applications, 11,810 are complete. 19 MW were installed in 2007 and 133 MW were installed in 2008 for total of 152 MW.
  • The approved and active applications in the CSI are worth an estimated $775 million of solar incentive payments.


Program Updates

cover of progress report

CSI-Funded Systems

Cumulative Total Capacity of CSI Applications
(1/1/07 - 12/31/08)

Utility Residential Non-residential Total
PG&E 52.1 MW 118 MW 170.1 MW
Total Applications 11,187 876 12,063
SCE 20.2 MW 75.3 MW 95.5 MW
Total Applications 4,038 380 4,418
CCSE (San Diego) 7.0 MW 25.3 MW 32.3 MW
Total Applications 1,568 150 1,718
Total MW 79.3 MW 218.6 MW 297.9 MW
Total CSI Applications 16,793 1,406 18,199

This data includes the cumulative of all applications, not the number of installed systems and total installed capacity for the CSI program.
It does not cover the self-generation program projects funded by the CPUC from 1998 to 2006 but completed installation in 2007 and 2008.
See also the link above to the on-line CSI database for latest data.

CSI Triggers