Last reviewed: October 29, 2026. Prices, rates and rules change. Every figure below links to its source.
This guide explains solar panel cost California homeowners may see, using the state average installed price of $2.52 per watt (EnergySage California cost data (average, before incentives), October 2026) before incentives. At that price a 7 kW system costs about $17,640. Homeowners who buy a system in 2026 get no federal tax credit, so that price is close to what you actually pay.
Solar panel cost California: compare typical system sizes
Installers price systems by the watt, so the size you need drives the total. At the average price above:
| System size | Estimated installed cost |
|---|---|
| 5 kW | about $12,600 |
| 7 kW | about $17,640 |
| 9 kW | about $22,680 |
| 11 kW | about $27,720 |
EnergySage reports a range of $18,050 to $24,420 for an 8.44 kW system in California, which is about $2.14 to $2.89 per watt. Real quotes vary with your roof, equipment, permitting and the company. Compare quotes in dollars per watt (total price ÷ system watts) so different system sizes line up.
No federal tax credit for buyers in 2026
The 30% federal credit for homeowners (Section 25D) ended for systems placed in service after December 31, 2025 (Solar.com). If you buy with cash or a loan, do not subtract 30% from any quote. Companies that own a system on your roof (a lease) can still claim a business credit; see our lease vs. buy guide.
California’s electricity rate
The average California residential rate was 29.75¢ per kWh (U.S. EIA, Electric Power Monthly (residential average price), updated automatically, August 2026). Each kWh your panels make saves you that much only when it replaces power you would have bought, so payback depends heavily on your own bill. Use the rate printed on your bill in the calculator if you can.
Net billing: how exported power is credited
The California Public Utilities Commission adopted the Net Billing Tariff on December 15, 2022 (Decision D.22-12-056) as the successor to NEM2. It applies to customers who submit an interconnection application on or after April 15, 2023. This guide does not state a California export rate, because we have not confirmed one from a regulator. Ask your utility how it credits power you send to the grid under net billing, and get the answer in writing before you sign a solar contract.
California property tax treatment
California Revenue and Taxation Code Section 73 says that adding an active solar energy system is not treated as new construction for property tax reassessment. By the statute’s own terms the section remains in effect only until January 1, 2027, and systems that qualify before that date stay excluded until the next change in ownership. If you are close to installing, ask your installer and your county assessor how the January 1, 2027 date applies to you.
We have not verified any statewide California rebate for solar or batteries as of the review date above. Some utilities and cities run their own programs; ask yours.
HOAs and solar in California
Under California Civil Code Section 714, a rule in a deed, contract or governing document that effectively prohibits or restricts installing or using a solar energy system is void and unenforceable. The law allows reasonable restrictions, meaning those that do not significantly increase the system’s cost or significantly decrease its efficiency, or that allow an alternative system of comparable cost and efficiency. Submit your plans as your association requires.
Wildfire, wind, roofs and insurance
- Ask each installer which local fire and building-code requirements apply to your roof layout, what wind rating the racking is installed to, and confirm the job will be permitted and inspected.
- If your roof is near the end of its life, price a re-roof first. Removing and reinstalling panels later adds cost.
- Call your homeowners insurer before you sign to ask how solar affects your coverage and premium.
Questions to ask every installer
- What is the price per watt, and what exactly is included (permits, monitoring, roof work, electrical upgrades)?
- Which panels and inverters, and what are the product and workmanship warranties?
- How did you estimate my production, and how did you account for shade?
- Which utility rules and incentives does your savings estimate assume, and how will my utility credit exported power?
- Which California and local licenses and permits apply, and who does the installation: your crew or a subcontractor?
Some links on this page may be affiliate links. If you buy or sign up through them, we may earn a commission at no extra cost to you. It never changes the numbers our calculator shows. How we make money.
Sources
- EnergySage: cost of solar panels in California
- U.S. EIA, Electric Power Monthly, Table 5.6.A
- California Public Utilities Commission: Net Billing Tariff
- California Revenue and Taxation Code Section 73
- California Civil Code Section 714
- Solar.com: end of the residential solar tax credit
California solar cost questions
How much do solar panels cost in California?
The average installed price of home solar in California is $2.52 per watt (EnergySage California cost data (average, before incentives), October 2026), before any incentives. Real quotes vary with your roof, equipment, permitting and the installer. The system-size table above shows typical totals.
Is solar worth it in California?
It depends on your own bill and rate. California’s average residential rate was 29.75¢ per kWh (U.S. EIA, Electric Power Monthly (residential average price), updated automatically, August 2026). Enter the rate printed on your own bill in our calculator to see a closer estimate for your home.
Is there still a federal tax credit for solar in California?
No. The 30% federal credit for homeowners under Section 25D ended for systems placed in service after December 31, 2025, so a California homeowner buying in 2026 should not subtract 30% from any quote. Companies that own a system on your roof can still claim a business credit.
Does adding solar raise my property taxes in California?
Revenue and Taxation Code Section 73 excludes an active solar energy system from new-construction reassessment, but it remains in effect only until January 1, 2027, with systems that qualify before then staying excluded until a change in ownership. Ask your county assessor how it applies to your home.
Can my HOA ban solar panels in California?
Not outright. Civil Code Section 714 makes a rule that effectively prohibits or restricts installing a solar energy system void and unenforceable, though reasonable restrictions are allowed. Check your association’s rules and submit your plans as it requires.