Solar Panels in California: 2026 Costs, NEM 3.0, and Incentives
In California, two things drive the solar math more than anywhere else: some of the highest residential electricity rates in the country, and NEM 3.0, the Net Billing Tariff that took effect in April 2023. Under NEM 3.0, the power you export to the grid is no longer credited at the retail rate; it is paid at a much lower avoided cost that swings by hour, day, and season. That single change is why a battery has gone from a nice-to-have to the centerpiece of a California system, since storing your midday production to use at night is now worth far more than selling it back. Pair that with abundant sun and you still have strong solar economics here, but the path to payback looks different than it did under the old net metering rules.
Solar incentives in California
State, utility, and local programs that can lower the cost of going solar here. Availability and amounts change, so verify each before counting on it.
| Program | Type | What to know |
|---|---|---|
| SGIP (Self-Generation Incentive Program) | State | As of early 2026, the SGIP General Market, Equity, and Equity Resiliency battery-storage budgets were closed to new applications under CPUC Decision 25-12-003 (applications and waitlists closed at the end of December 2025). The main pathway still open is the income-qualified RSSE / AB 209 budget for households under 80% of area median income, and it is currently fully reserved and waitlist-only. Do not assume an SGIP battery rebate is available; confirm current funding and your eligibility with your utility, the Program Administrator, and the CPUC before counting on any SGIP credit. |
| Active Solar Energy System Property Tax Exclusion | State | Adding a qualifying solar system does not raise your property assessment, but under current law the system must be operational before January 1, 2027 to lock in the exclusion, so verify the current sunset date and timing with the State Board of Equalization. |
| DAC-SASH (Disadvantaged Communities Single-Family Solar Homes) | State | An up-front incentive of roughly $3 per watt for income-qualified homeowners in eligible disadvantaged communities, administered by GRID Alternatives and scheduled to run through 2030; note that its funding source shifts on July 1, 2026; GRID Alternatives expects intake to continue through that handoff, but confirm there is no interruption and verify current eligibility, funding, and intake status with the administrator, especially near that handoff. |
| Time-of-Use rate optimization | Utility | NEM 3.0 customers at PG&E, SCE, and SDG&E must enroll in a Time-of-Use plan (such as E-ELEC, TOU-D-PRIME, or EV-TOU-5), so shifting battery discharge into expensive evening peak hours is effectively a built-in savings lever rather than a separate rebate. |
| Commercial credit on leased or PPA systems (Section 48E) | Federal | For owned systems placed in service after December 31, 2025, the federal residential solar credit (Section 25D) no longer applies; a third-party owner of a leased or power-purchase-agreement system may still be able to claim the commercial Section 48E credit (which under current law applies to qualifying solar placed in service through 2027) if the project qualifies, which can be reflected in your pricing, but this is not guaranteed and should be confirmed with the provider and a licensed tax professional. |
Net metering in California
Net billing (NEM 3.0). California is on the Net Billing Tariff, commonly called NEM 3.0, for systems interconnected after April 15, 2023. Instead of crediting exports at the retail rate, your utility pays an avoided cost rate that changes by month, hour, and weekday or weekend and is often only a few cents per kWh, with your export values locked to your interconnection vintage for about nine years. Because exported power is now worth so much less than the power you buy back at night, adding a battery to store and self-consume your own production is usually what protects payback under this regime.
Going solar in California: what shapes the numbers
The local factors that move payback and savings most.
High electricity rates are the engine of solar value here
California has among the steepest residential electricity rates in the nation, and the major investor-owned utilities use tiered Time-of-Use pricing that makes evening power especially expensive. Every kilowatt-hour your system lets you avoid buying at those peak rates is where the real savings come from under NEM 3.0. That is also why two identical homes can have very different payback periods depending on whether they are served by PG&E, SCE, or SDG&E and how much they use after sundown. When you compare quotes, ask each installer to model your savings against your specific utility and your actual usage profile, not a statewide average.
Sun is plentiful, but production varies across the state
California averages roughly 5.3 to 5.8 peak sun hours per day, but it has some of the widest in-state variation in the country. Inland and desert areas like the Central Valley, the Inland Empire, and the high desert see strong year-round production, while the coastal fog belt and far northern counties produce noticeably less, especially in winter. Roof orientation, pitch, and shading from trees or neighboring buildings can move your annual output more than your zip code does. A good installer will use your address and a shading analysis to size the system, rather than applying a generic production estimate.
Net billing makes storage the deciding factor
Under NEM 3.0, a solar-only system exports its surplus midday power for just a few cents per kWh, then you buy expensive power back in the evening. A battery flips that equation by storing your own production to use during peak hours, which is why the large majority of new California systems now include storage. Batteries also provide backup during the Public Safety Power Shutoffs common in wildfire-prone areas. The trade-off is a higher upfront cost, so the question to work through with an installer is how much storage actually improves your specific bill, not whether to add a battery at all.
Financing changed in 2026, so read the fine print
The federal residential solar tax credit (Section 25D) was terminated for systems placed in service after December 31, 2025, so a homeowner buying or financing a system in 2026 should not expect a 30 percent federal credit on an owned system. Some leased and power-purchase-agreement offers may reflect a commercial credit (Section 48E) claimed by the system owner, but that is not guaranteed and the savings flow through the contract terms, not your tax return. Compare a cash or loan purchase against a lease or PPA carefully, watch for escalator clauses, and confirm any tax claims with a licensed tax professional. The information here is general and not tax advice.
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Local considerations for California homeowners
Conditions and rules that tend to come up when going solar in this state.
- NEM 3.0 export rates are low and time-varying, so a battery is usually what protects payback in California, not a solar-only system.
- Your utility matters a lot: PG&E, SCE, and SDG&E have different Time-of-Use plans and rates that change the math significantly.
- The Active Solar Energy System property tax exclusion is scheduled to sunset, with current law requiring systems to be operational before January 1, 2027.
- Wildfire and Public Safety Power Shutoff zones make backup power a bigger part of solar value, but note the SGIP battery-storage budgets (including the equity resiliency tier) were closed to new applications at the end of 2025, so verify whether any SGIP pathway is currently open before relying on it.
- Coastal fog and far-northern winters cut production versus inland and desert regions, so insist on an address-specific estimate.
- SGIP and other rebate budgets open, close, and waitlist, and some utility tiers have been closed to new applicants, so confirm current funding before assuming an incentive applies.
- California's solar consumer protection rules require a standardized disclosure document; review it before signing.
- HOA and local permitting vary by city and county, though California's solar-rights law limits how much an HOA can restrict a system.
Before you sign a California solar contract
Questions worth asking any installer before you commit:
- Will you model my savings against my specific utility (PG&E, SCE, or SDG&E) and my actual Time-of-Use usage, not a statewide average?
- Under NEM 3.0, how does adding a battery change my estimated payback compared with a solar-only system?
- Is any SGIP battery rebate budget currently open to new applications, and do I qualify? Several SGIP budgets closed to new applicants at the end of 2025, so do not assume a battery rebate is available.
- Can my system realistically be operational before the January 1, 2027 property tax exclusion deadline, and will you put that timeline in writing?
- If you are quoting a lease or PPA, who claims any federal commercial credit, and exactly how does that flow into my price and any escalator clauses?
- Will you provide the California solar consumer protection disclosure document and a production estimate based on a shading analysis of my roof?
Related solar guides
Solar in California: frequently asked questions
Does California still have net metering in 2026?
California uses net billing, known as NEM 3.0, for systems interconnected after April 15, 2023. You still get credited for exporting power, but at a lower avoided cost rate that varies by time and season rather than the retail rate, which is why storage has become central to the economics.
Can I still get the 30 percent federal solar tax credit in California?
For systems you own that are placed in service after December 31, 2025, the federal residential credit (Section 25D) no longer applies, so a 2026 purchase should not assume a 30 percent federal credit. Some leased or PPA arrangements may involve a commercial credit (Section 48E) claimed by the system owner, but that is not guaranteed. This is general information, not tax advice, so confirm your situation with a licensed tax professional.
How much do solar panels cost in California?
Installed prices commonly run about $2.40 to $3.25 per watt before incentives, which for a typical home system often lands somewhere around $18,000 to $25,000. Your real number depends on system size, equipment, roof complexity, and whether you add a battery, so compare itemized quotes from several installers.
Do I need a battery with solar in California now?
You are not required to have one, but under NEM 3.0 a battery usually makes a big difference because it lets you store cheap midday production to offset expensive evening power instead of exporting it for a few cents. Most new California systems now include storage, and it also provides backup during Public Safety Power Shutoffs. Ask your installer to show how storage changes your specific payback.
What is the California solar property tax exclusion deadline?
Adding a qualifying solar system does not increase your property assessment, but under current law the exclusion is scheduled to sunset, with the system needing to be operational before January 1, 2027. Because deadlines can shift, verify the current rules with the State Board of Equalization and confirm your project timeline in writing with the installer.
How long is the payback on solar in California?
Estimated payback commonly falls in the range of about 7 to 11 years, but it varies widely with your utility, your usage, whether you add storage, and how you finance the system. Treat any single number as an estimate and ask installers to base it on your actual bills and rate plan rather than a statewide average.
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