Guide
California solar incentives in 2026: what is left after the federal credit
Updated
California is the largest rooftop solar market in the country and, unusually, it has never offered a state income tax credit for it. Here is what genuinely exists in 2026, and the deadline hidden in the property tax rules.
There is no California solar income tax credit
This is the first thing to get straight, because plenty of pages imply otherwise by listing federal and state benefits together. California offers no residential solar income tax credit. If a quote shows a "California state credit" line, ask for the statute.
Property tax: real, valuable, and running out
Revenue and Taxation Code section 73 excludes an active solar energy system from the meaning of "newly constructed", so adding one does not trigger a reassessment of your home. The section defines an active solar energy system to include, for electricity production, "storage devices, power conditioning equipment, transfer equipment, and parts related to the functioning of those items" (leginfo.legislature.ca.gov).
The section is written with an end date. Subdivision (i) states that "this section shall remain in effect only until January 1, 2027", and then that "active energy solar systems that qualify for an exclusion under this section prior to January 1, 2027, shall continue to be excluded on and after January 1, 2027, until there is a subsequent change in ownership". Subdivision (f) adds that the exclusion "shall remain in effect only until there is a subsequent change in ownership", and subdivision (g) states the section "applies to property tax lien dates for the 1999-2000 fiscal year to the 2025-26 fiscal year, inclusive". The current text was amended by Stats. 2025, Ch. 328 (SB 710), effective January 1, 2026.
This is technical, it has been amended repeatedly, and it decides whether your property is reassessed. Read the section yourself and confirm your own position with your county assessor before relying on it. Nothing here is tax advice.
Storage: the CPUC program
California's storage incentive is the Self-Generation Incentive Program, administered under the California Public Utilities Commission (cpuc.ca.gov). Incentive levels, budget categories and eligibility rules change from year to year and some categories are aimed at specific groups rather than the general market, so we quote no figure here. Ask an installer to show you which category they are applying for, and check the current terms on the CPUC page before treating any incentive as money in hand.
The incentive that is not called one
California's real advantage is the price of the electricity you stop buying. At an average of 33.25 cents per kWh in May 2026 (EIA, Electric Power Monthly, Table 5.6.A), Californian households pay more than twice the Arizona, Florida and Texas averages for the same month. Every kilowatt-hour a system lets you avoid buying at a peak time is worth far more here than almost anywhere else, which is precisely why net billing pushed the design toward self-consumption. See how net billing works.
A short checklist
- Ask for the statute behind any state credit line on a quote. There is no California residential solar income tax credit.
- Ask your county assessor how section 73 applies to your installation date before assuming no reassessment.
- Ask which SGIP category, if any, the installer is applying under, and whether the incentive is paid to you or to them.
- Ask what tariff and rate schedule you will be interconnected on, which affects your savings more than any incentive.