California Solar Guide 2026: Rates, NEM 3.0 & Incentives

California is still the biggest solar market in America — and in 2026, it's also the most misunderstood one.

The state has 55,510 MW of installed solar capacity, more than any other state and just ahead of Texas at 53,568 MW^[1]. It has the highest electricity rates in the continental US at 33.35¢/kWh — roughly 80% above the national average^[2]. And it has the longest continuous history of solar incentives of anywhere in the country.

But two changes reshaped the math completely. First, NEM 3.0 cut the value of exported solar power by roughly 75% for new customers of PG&E, SCE, and SDG&E^[3]. Then, on January 1, 2026, the federal 30% residential tax credit expired for homeowner-owned systems^[4].

So does solar still make sense in California? Yes — and in some ways the case is stronger than ever. But the answer depends entirely on your utility, your rate plan, and whether you add a battery. Let's work through it.

Why California is still the #1 solar state

Despite the policy headwinds, California's fundamentals remain the best in the country:

Sources: SEIA data compiled through June 2026^[1]; EIA Electric Power Monthly, Table 5.6.A, period 2026-03^[2]; EnergySage California cost data, updated September 2026^[5].

Here's the key insight: California solar works in 2026 not because of subsidies, but because retail electricity is extraordinarily expensive. When you're paying 33¢/kWh — and 40–55¢/kWh during summer peak hours — every kilowatt-hour you generate and consume yourself is worth far more than it would be almost anywhere else.

That's also why the battery conversation is more important in California than anywhere else. If you read our Texas guide, you saw that Texas solar works on cheap installation and abundant sun. California works on expensive electricity and time-of-use arbitrage. Same technology, completely different strategy.

California electricity rates: the numbers that drive everything

California's residential electricity rates are the highest in the contiguous United States, and they've been climbing fast. According to the EIA, the statewide average residential rate was 33.35¢/kWh as of March 2026 — about 80% above the national average of 18.56¢/kWh^[2].

But the statewide number hides enormous variation. California's three investor-owned utilities (IOUs) serve different territories with different rate structures:

Utility territory mapping and net metering regimes per CPUC and utility filings^[3]. SDG&E's status as the nation's highest-rate utility is widely reported; verify current rates on your bill.

The important part for solar homeowners is not the average rate — it's the time-of-use spread.

Under NEM 3.0, all new IOU customers must enroll in a time-of-use (TOU) rate plan. The typical peak window is 4 PM to 9 PM daily, when summer rates reach $0.40–$0.55/kWh. Off-peak overnight rates can fall below $0.12/kWh^[3].

That spread — roughly 4× between peak and off-peak — is the entire game. It's what makes batteries essential in California and optional in most other states.

NEM 3.0 explained: what changed and why it matters

This is the single most important thing to understand about California solar in 2026.

NEM 3.0 — officially the Net Billing Tariff — was adopted by the California Public Utilities Commission in December 2022 (Decision 22-12-056) and took effect April 15, 2023 for new interconnection applications with PG&E, SCE, and SDG&E^[3].

What it changed:

Source: CPUC Decision 22-12-056; Baker Botts legal analysis; California Solar & Storage Association^[3].

In plain terms: under NEM 3.0, exporting power to the grid is worth almost nothing. You get roughly 5–8¢ per kWh for power you send back, while you pay 40–55¢ per kWh when you buy power during peak hours.

The math is brutal for a solar-only system. An installer who sizes you an oversized array that exports 40% of its production is designing for a tariff that no longer exists.

Two important details

1. The NEM 2.0 grandfather deadline has passed. Customers who submitted a complete interconnection application before April 15, 2023 are grandfathered on NEM 2.0 for 20 years from their PTO date. But any grandfathered system that had not received PTO by April 15, 2026 fell to NEM 3.0^[3]. If you're on NEM 2.0 today, guard that status — and note that adding a battery does not affect it.

2. The legal challenge is still alive. The California Supreme Court sent the NEM 3.0 case back to the Court of Appeal for reconsideration in August 2025, and a ruling is expected in 2026^[3]. Until then, every new IOU interconnection is on NEM 3.0. Don't build a plan around a possible reversal.

What solar costs in California in 2026

California is not the cheapest state to install solar, but it's far from the most expensive — and the savings potential is the highest in the country.

EnergySage's September 2026 data shows the average California homeowner pays $21,028 for an 8.35 kW system before incentives, or about $2.52 per watt. The average 25-year savings: $120,735^[5].

For a larger, more typical system size, EnergySage's state-level data puts a 12 kW system at roughly $29,280 ($2.44/W)^[5].

Source: EnergySage marketplace data, California, updated September 2026^[5]. Costs exclude the 30% federal credit, which expired December 31, 2025^[4].

Cost by city

Labor costs vary significantly across California. Here's how a typical residential installation is priced across 30 major metros, indexed for local labor and cost-of-living differences:

Source: HomeCostCalc California solar cost comparison, 30 cities, 2026. Statewide median $26,160. Totals use a common default project scope for inter-city comparison — not a quote^[9].

Note the pattern: the Central Valley — Fresno, Bakersfield, San Bernardino — is the cheapest place in California to install solar. That's also where NEM 3.0 hurts least, because those areas have the highest cooling loads and the most valuable self-consumption profile.

Coastal metros (San Jose, Oakland, San Diego) run 20–25% higher due to labor costs and permitting complexity.

California solar incentives in 2026: what's left

California's incentive stack narrowed significantly in 2026. Three programs that dominated the market for years closed, and the property tax exclusion has a hard deadline. Here's the complete picture:

SGIP: the big battery rebate mostly closed

The Self-Generation Incentive Program was California's flagship battery rebate. In 2026, it is no longer a broad market tool.

Three budgets closed to new applications on December 31, 2025^[7]:

• General Market Residential — paid roughly $150–$200/kWh for any IOU residential customer
• Equity — paid roughly $850/kWh for income-qualified households enrolled in CARE or FERA
• Equity Resiliency — paid up to $1,000/kWh for customers in high fire-threat districts or on Medical Baseline

This is critical: if an installer still lists the SGIP General Market rebate as a guaranteed line item in a standard proposal, they are working from outdated assumptions. Ask them to show you the current budget status.

The only active residential SGIP pathway in 2026 is RSSE (Residential Solar and Storage Equity), created under Assembly Bill 209 and funded with $280 million in state dollars separate from ratepayer collections. It pays:

• $3,100 per kW of paired solar capacity
• $1,100 per kWh of battery storage

A 7 kW solar system paired with a 10 kWh battery could qualify for up to $21,700 for solar and $11,000 for the battery — $32,700 total^[7].

The catch: the budget is fully reserved, and new applications go onto a waitlist, funded when earlier reservations cancel or fail. Eligibility requires income at or below 80% of Area Median Income (or CARE/FERA/ESA enrollment), service from PG&E, SCE, SDG&E, SoCalGas, or LADWP, and installation by an SGIP-registered contractor. You must also enroll in a qualified Demand Response program within one year^[7].

Homeowners cannot apply directly — the installer submits the claim. The official budget tracker is at selfgenca.com.

DAC-SASH: up to $3/watt for disadvantaged communities

The Disadvantaged Communities – Single-family Affordable Solar Homes (DAC-SASH) program is the most generous remaining residential solar rebate in California. It provides an upfront rebate of up to $3 per watt of installed solar capacity. A 5 kW system can receive up to $15,000, which frequently covers 80–100% of installation costs^[8].

The program is funded at $8.5 million per year and remains active through 2030. It's administered by GRID Alternatives, a nonprofit that also provides workforce training.

To qualify, a homeowner must^[8]:

• Receive electric service from PG&E, SCE, or SDG&E
• Own and occupy a single-family home as a primary residence
• Live in a Disadvantaged Community as defined by the CalEnviroScreen 4.0 map
• Have household income within CARE or FERA limits

Note that the rebate covers equipment and installation, but roof repairs, electrical panel upgrades, and permitting fees may still be out of pocket.

The property tax exclusion — and its 2027 deadline

California Revenue and Taxation Code Section 73 excludes active solar energy systems from property tax reassessment. Adding solar does not increase your property's assessed value or annual tax bill^[6].

But it's scheduled to sunset on January 1, 2027. According to the California State Board of Equalization, any system completed before January 1, 2027 qualifies for the exclusion. Systems completed after that date may be assessed at market value and added to the tax roll. Systems that qualified before the sunset remain excluded until the property changes ownership^[6].

For a typical residential system, the annual savings are modest — often a few hundred dollars per year. But for commercial and agricultural properties with large arrays, the exclusion can be worth tens of thousands annually, which makes the 2026 deadline a real factor in project timelines.

What California does NOT offer

Two common misconceptions:

• No statewide sales tax exemption. Unlike Texas and Florida, California does not have a blanket sales tax exemption for residential solar equipment. Most homeowners pay sales tax on the full system cost^[7].
• No state income tax credit. California has no equivalent to New York's 25% state credit.

Local utility and CCA programs worth checking

Several municipal utilities and community choice aggregators run their own rebates. These change frequently, so verify before quoting:

• SMUD My Energy Optimizer Partner+ — Sacramento Municipal Utility District customers can receive up to $5,400 per Tesla Powerwall, capped at $10,000 per household, plus ongoing virtual power plant payments for allowing SMUD to dispatch the battery during grid events^[7].
• Alameda Municipal Power — income-qualified homeowners below roughly $106,000 household income can receive a one-time $500 rebate for a new solar system on a home built before 2020^[7].
• Silicon Valley Clean Energy, Peninsula Clean Energy, Sonoma Clean Power — periodically offer battery and electrification incentives subject to annual budgets^[7].

Community Choice Aggregators generally don't change net metering rules for customers in IOU territory, but they can change the generation portion of your bill. That matters because NEM 3.0 credits are based on avoided cost, not the full CCA generation rate — so always model your actual bundled or CCA rate schedule.

The math: solar-only vs. solar + battery

This is where NEM 3.0 changes everything, and where a lot of California homeowners get bad advice.

Take a 7 kW system on a Fresno home served by PG&E, as modeled in industry analyses^[7]:

That $1,040 annual difference is the NEM 3.0 penalty — and it stretches payback by roughly four years.

Now add a 13.5 kWh battery.

Instead of exporting midday solar for 6¢, the battery stores it and discharges during the 4–9 PM peak window, offsetting grid imports at $0.40–$0.50/kWh. The homeowner effectively earns the retail peak rate on stored energy instead of the avoided-cost export rate^[7].

The result: combined system payback falls back into the 8–10 year range, even without the federal tax credit. The battery also provides backup power during Public Safety Power Shutoff (PSPS) events.

This is why NEM 3.0 didn't kill California solar — it converted it from a generation play into a storage play. Batteries went from optional add-on to core system component. California's battery attachment rate went from about 11% under NEM 2.0 to roughly 70% today^[3].

For a full comparison of battery options and which chemistry performs best in California's heat, see our Best Solar Batteries 2026 guide.

Don't design for annual offset anymore

The most common mistake we see in California quotes is a system designed the old way. Under NEM 2.0, oversizing made sense because every exported kWh earned retail credit. Under NEM 3.0, that same design exports at 6¢ and imports at 45¢ — you lose money on every exported kilowatt-hour.

What a good NEM 3.0 design looks like:

• Size the battery to cover the 4–9 PM peak window, not the full daily load
• Mix panel orientations — add west-facing panels to push production later into the afternoon
• Avoid oversized arrays that create large midday surpluses
• Model your actual TOU rate plan, because PG&E, SCE, and SDG&E structures differ significantly

A proposal that uses a flat assumed export rate can overstate savings by 20–40%. The Avoided Cost Calculator has hundreds of hourly rate combinations across months, hours, and day types. Ask your installer to show hourly modeling.

The municipal utility exception

NEM 3.0 applies only to the three investor-owned utilities. If you live in a city with a municipal utility, your economics may be substantially better.

• LADWP (Los Angeles) — operates under its own net metering rules, which remain more favorable to solar-only systems than NEM 3.0. Not eligible for SGIP^[7].
• SMUD (Sacramento) — own net metering rules, plus local battery rebates through My Energy Optimizer Partner+^[7].
• Other municipal utilities — Burbank, Glendale, Pasadena, and others set their own terms. Some still offer full retail net metering^[7].

The practical impact is large. A customer in San Jose served by PG&E faces a completely different financial picture from a customer in Sacramento served by SMUD. The same system size and equipment can produce a 7-year payback in one territory and a 14-year payback in another.

Always confirm your utility before modeling anything.

Who benefits most in 2026

The value of California's 2026 incentive stack depends almost entirely on your household profile. Two neighbors on the same street can face wildly different out-of-pocket costs.

This is the sharpest divide in California solar policy today. The state shifted subsidies toward equity, leaving middle- and upper-income buyers with little direct help. For those households, solar in 2026 is a pure rate-arbitrage decision: it works because California retail electricity is expensive, not because subsidies are generous.

If you want the broader policy context on what happened to the federal credit and what survived, our Is Solar Worth It in 2026 guide covers the national picture in detail.

The lease and PPA route

One path still captures federal support: letting a third party own the system.

Under a lease or power purchase agreement (PPA), a company owns the panels on your roof. They qualify for the Section 48E Clean Electricity Investment Tax Credit — 30% plus bonus adders available for projects that begin construction by July 4, 2026 or are placed in service by December 31, 2027^[6]. They pass some of that value to you as a lower monthly rate.

Bonus adders under 48E can push the credit above 30%^[6]:

• Domestic content bonus — +10% for meeting US manufacturing thresholds
• Energy community bonus — up to +10% for projects in fossil-fuel-employment or brownfield census tracts
• Low-income bonus — up to +20% for qualified low-income residential buildings

This is why PPA and lease providers can still advertise attractive monthly payments in 2026. The savings are indirect, but real.

The tradeoffs are the same as everywhere: no ownership, no equity, no home value increase, and contracts that complicate a home sale. We cover the full comparison — including 25-year cost modeling — in our PPA vs Lease vs Buy guide.

One California-specific note: if you have the tax liability to use a credit, a PPA makes less sense than it does for someone who doesn't. Homeowners with low tax liability may actually find third-party ownership more attractive in 2026 than a cash purchase, since they couldn't have used the 25D credit effectively anyway.

How to choose a California installer

California has one of the most competitive — and most chaotic — solar installer markets in the country. The state's history of aggressive sales tactics and a few high-profile bankruptcies means you should vet carefully.

Our checklist:

1. Get at least 3 quotes, and compare price per watt — not total cost
2. Verify the CSLB license at cslb.ca.gov. California requires a valid contractor license for solar installation
3. Ask for hourly NEM 3.0 modeling, not a flat export assumption. If they can't show you the TOU analysis, they're designing for a tariff that no longer exists
4. Confirm your utility and tariff before signing — IOU vs. municipal changes everything
5. Ask specifically whether they are SGIP-registered if you might qualify for RSSE
6. Check for income-qualified program screening. A good installer will ask about CARE/FERA enrollment early. If they don't, you may be leaving $15,000+ on the table
7. Be skeptical of "no money down, $0 electric bill" claims. Under NEM 3.0 those promises usually require aggressive assumptions

Also be careful with PACE financing. It lets you finance solar with no money down and repay through a property tax assessment, but it creates a lien on your property that can complicate refinancing or a home sale^[7].

Frequently asked questions

Is solar still worth it in California in 2026?

Yes, but only with the right system design. A solar-only system under NEM 3.0 has a payback of roughly 11 years, because exports are worth only 5–8¢/kWh. Add a battery so you self-consume and shift power to the 4–9 PM peak window (when you'd otherwise pay 40–55¢/kWh), and payback returns to 8–10 years — even without the federal credit^[7]. California's very high retail rates are what make this work.

Did California solar incentives go away in 2026?

Not entirely, but they narrowed sharply. The federal 30% residential credit (Section 25D) expired December 31, 2025. SGIP's General Market, Equity, and Equity Resiliency budgets closed December 31, 2025. What remains: SGIP RSSE (waitlist only, for income-qualified households), DAC-SASH (up to $3/W, active through 2030), SOMAH for affordable multifamily housing, the property tax exclusion (until January 1, 2027), and local municipal utility rebates^[7][8].

What is NEM 3.0 in simple terms?

It's the billing rule for new PG&E, SCE, and SDG&E solar customers, adopted December 2022 and effective April 15, 2023 (CPUC Decision 22-12-056). Instead of earning full retail credit for exported power (NEM 2.0, ~$0.28–$0.35/kWh), you earn the Avoided Cost Calculator rate — an average of $0.05–$0.08/kWh. That's roughly a 75% cut in export value. It applies only to the three investor-owned utilities, not municipal utilities like LADWP or SMUD^[3].

Do I need a battery with solar in California?

Practically speaking, yes — if you want a strong financial return. Under NEM 3.0, exporting is worth almost nothing, so the value comes from self-consumption and peak-hour discharge. California's battery attachment rate rose from about 11% under NEM 2.0 to roughly 70% today^[3]. Without storage, you're leaving most of the NEM 3.0 opportunity on the table.

Am I grandfathered under NEM 2.0?

Only if you submitted a complete interconnection application before April 15, 2023 and received Permission to Operate by April 15, 2026. NEM 2.0 grandfathering lasts 20 years from your PTO date. Adding a battery does not affect grandfathered status. If you're on NEM 2.0, your solar economics are dramatically better than a new customer's — protect that status^[3].

Does the property tax exclusion deadline really matter?

For residential systems, it's a few hundred dollars a year — worth noting but not decisive. For commercial and agricultural systems with large arrays, it can be worth tens of thousands annually. The exclusion under Revenue and Taxation Code Section 73 applies to systems completed before January 1, 2027. Systems that qualified remain excluded until the property changes ownership^[6].

What if I live in Los Angeles or Sacramento?

You may have better economics. LADWP and SMUD are municipal utilities with their own net metering rules, and NEM 3.0 does not apply to them. LADWP customers are also not eligible for SGIP, but SMUD offers its own battery rebates — up to $5,400 per Powerwall, capped at $10,000 per household^[7].

Bottom line

California in 2026 is a different solar market, not a dead one.

The case for solar in California is still the strongest in the country — but the reason changed. It's no longer about subsidies. It's about the fact that you're paying 33¢/kWh on average and 40–55¢/kWh at peak, which makes every self-consumed kilowatt-hour extraordinarily valuable.

What actually determines your outcome:

• Your utility. PG&E, SCE, and SDG&E are on NEM 3.0. LADWP and SMUD are not. This is the single biggest variable.
• Whether you add a battery. Without one, NEM 3.0 payback stretches to ~11 years. With one, it returns to 8–10 years.
• Your income level. If you qualify for DAC-SASH and SGIP RSSE, incentives can cover most or all of the project. If you don't, you're relying on rate arbitrage alone.
• Your installer's design quality. A system designed for annual offset under NEM 2.0 logic will underperform badly. Hourly TOU modeling is not optional anymore.

Our verdict: If you're an IOU customer who plans to stay in your home 10+ years, solar plus storage still makes strong financial sense in California — and SDG&E territory is the best battery market in the country by a wide margin. If you're in a municipal utility territory, run the numbers even more confidently. If you're income-qualified, screen for DAC-SASH and RSSE before you sign anything.

Run your own numbers with our solar savings calculator, which uses real EIA rates and NREL sun data with every assumption adjustable. And if you're comparing California to Texas, our Texas Solar Guide breaks down how the two biggest markets differ.