California Solar Initiative (CSI) Program

California Public Utilities Commission / PG&E

Available Solar & Renewable

About This Program

State solar incentive program providing performance-based rebates for residential solar photovoltaic installations. Incentive levels decline as program goals are met. Must use approved contractor and equipment. Federal Investment Tax Credit (ITC) also available.

Estimate based on typical 5kW system; federal tax credit provides additional 30% savings

Official program page checked live on 2026-06-17.

Data last verified 2026-06-09. How we verify our data.

Key Details

  • Performance-based incentive for solar PV
  • Must use approved contractor and equipment
  • Incentive levels decline over time
  • Federal 30% tax credit also available
  • Net metering available through PG&E

How to Apply

Get free help applying Visit Official Program Page Track this program

(877) 743-4112

A grant-savvy contractor in Atascadero, CA can handle the paperwork, inspections, and timelines so your funding releases on schedule. Getting matched is free.

This grant requires a licensed contractor

This grant requires the work to be done by a licensed contractor, and you will likely need a written estimate to apply. Get a free estimate from a contractor in Atascadero who knows grant paperwork.

Get matched with a contractor

Each program sets its own contractor rules. Check the official program page for exact requirements.

Your application paperwork

Documents you will likely need

  • Your federal tax return for the year of the work (this benefit is claimed on your taxes, not through a separate application).
  • Proof you own and live in the home (deed, recent mortgage statement, or property tax bill).
  • A government-issued photo ID for every owner on title.
  • A written estimate from a licensed contractor for the work (many programs require this to apply).
  • A recent utility bill for the home (energy and weatherization programs use it to confirm service and usage).
  • The program's own application form, completed (use the official link or phone number on this page).
Download this checklist (PDF)

Requirements vary by program and locality. Confirm the exact rules on the official program page. We can help you prepare your paperwork, but you submit it yourself.

Deadline: Check with solar installer for current incentive levels

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