California Solar Initiative (CSI) - Thermal

California Public Utilities Commission

Available Energy Assistance

About This Program

California Solar Initiative (CSI) - Thermal is available to homeowners in Long Beach, CA.

Provides incentives for installation of solar water heating systems in residential and commercial properties. Rebate amounts based on system type and expected performance, helping offset installation costs.

Average residential solar thermal incentive estimate

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

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

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

Key Details

  • Incentives for solar water heating
  • Reduces water heating energy costs
  • Available to all Long Beach homeowners
  • Professional installation required
  • Incentive based on system performance

How to Apply

Get free help applying Visit Official Program Page Track this program

(866) 584-6262

A grant-savvy contractor in Long Beach, 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 Long Beach 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 ongoing while funding 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

Who qualifies for California Solar Initiative (CSI) - Thermal in Long Beach?

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

How do I apply for California Solar Initiative (CSI) - Thermal in Long Beach, CA?

Apply directly with California Public Utilities Commission using the official program link on this page or call (866) 584-6262. 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 Long Beach, CA contractors

Find More Programs in Long Beach, CA

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

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