Welcome to California Solar Statistics
California Solar Statistics is the official public reporting site of the California Solar Initiative (CSI), presented jointly by the CSI Program Administrators and the California Public Utilities Commission. This site presents actual program data, exported from the CSI online application tool each Wednesday. Users of this site can view program data summaries for the CSI General Market, Multifamily Affordable Solar Housing (MASH), and Single Family Affordable Solar Homes (SASH) programs provided in several figures and tables, and can also download the complete Working Data Set for their own analysis.
California Leads the Nation
- 242,525 solar projects
- 2,276 megawatts installed
- $5.61 avg cost/watt <10kW
- $5.14 avg cost/watt >10kW
NOTE: Above figures include non-CSI data
last updated: Aug. 27, 2014 data sources
Using California Solar Statistics
View Solar Statistics
From the average cost per watt of a solar system, to the city with the most roof-top solar, to the total number of MW installed, the View Solar Statistics menu is your gateway to the most up-to-date information on the California Solar Initiative. The dynamic filters on each figure allow you to slice and dice the program data to suit your research and evaluation needs. Roll your mouse over the View Solar Statistics item at the top of the left navigation to get started.
Find an Active Solar Contractor
Looking for a solar contractor? Want to know how your current contractor stacks up against the competition? Find and compare solar contractors working in your area with just a few quick clicks.
Download Current CSI Data
Get your hands on the data behind the figures and tables. Spreadsheets containing comprehensive information for the entire program are available here for download.
Looking for a specific project or want to see all the projects in a certain utility’s territory? Search for pending and completed projects by any combination of Program Administrator, Customer Sector, Application Status or Program Type.
FAQs and Facts
Get the answers to your California Solar Statistics-related questions by visiting the FAQ.