California Solar Initiative (CSI) Thermal Program

California Public Utilities Commission

Available Solar & Renewable

About This Program

California Solar Initiative (CSI) Thermal Program is available to homeowners in Escondido, CA.

Incentives for solar water heating systems in SDG&E territory. Rebate amounts based on system type and energy displacement. Higher incentives available for low-income households.

Rebate based on solar thermal system size and type

Official program page checked live on 2026-06-22.

Data last verified 2026-05-25. How we verify our data.

In Escondido, CA, you can combine this program with other local help to cut your cost:

Key Details

  • Up to $3,750 for solar water heating
  • Available in SDG&E service territory
  • Higher rebates for low-income households
  • Must use CSI-approved contractor
  • Pre-application required

How to Apply

Get free help applying Visit Official Program Page Track this program

(866) 425-7652

A grant-savvy contractor in Escondido, 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 Escondido 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

  • 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).
  • Photos of the problem area or the work to be done.
  • 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: Program continues while funds available

Questions about this program?

Ask us. It is free, and a real person answers within a business day.

Email us about this program

Frequently asked questions

How much can California Solar Initiative (CSI) Thermal Program provide in Escondido, CA?

Up to $3,750 rebate.

Who qualifies for California Solar Initiative (CSI) Thermal Program in Escondido?

California Solar Initiative (CSI) Thermal Program is open to homeowners in Escondido, CA. It has no income limit.

How do I apply for California Solar Initiative (CSI) Thermal Program in Escondido, CA?

Apply directly with California Public Utilities Commission using the official program link on this page or call (866) 425-7652. There is no middleman and no fee.

Need a Contractor for This Grant?

Grant-approved contractors understand the documentation, inspections, and timelines, so your funding releases on schedule.

Get matched with a pro, free Browse Escondido, CA contractors

Find More Programs in Escondido, CA

This is just one of many grants, rebates, and free programs available. Stack them together to maximize your savings.

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