How Much Do Solar Panels Cost in California? (2026)

Reviewed by: Dylan DeSantis, SolarMetric
Last Updated: May 16, 2026

Quick Answer

Solar panels in California cost $2.80–$3.14 per watt installed, or roughly $22,000–$28,000 for a typical 8 kW system before the federal tax credit. After the 30% federal Investment Tax Credit (ITC), that drops to approximately $15,400–$19,600. California has some of the highest electricity rates in the country (around $0.30–$0.34/kWh), which makes solar financially compelling — but the 2023 shift to NEM 3.0 net metering means most new buyers should plan to add battery storage.

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Solar Installation Cost in California by System Size (2026)

System Size	Avg. Cost (Before ITC)	Avg. Cost (After 30% ITC)	Est. Annual Output	Best For
6 kW	$16,800–$18,900	$11,760–$13,230	9,000–10,500 kWh	Smaller homes, low-medium bills
8 kW	$22,400–$25,120	$15,680–$17,584	12,000–14,000 kWh	Median CA home
10 kW	$28,000–$31,400	$19,600–$21,980	15,000–17,500 kWh	Larger homes, EVs
12 kW	$33,600–$37,680	$23,520–$26,376	18,000–21,000 kWh	High-usage households

Costs based on $2.80–$3.14/watt installed (EnergySage, SolarReviews, NRG Clean Power data, May 2026). Output estimates based on California’s average 5.5–6.0 peak sun hours/day.

Cost Per Watt in California

California’s installed cost averages $2.80–$3.14 per watt in 2026. That’s slightly above the national average of roughly $2.50–$3.00/watt, driven by higher labor costs, more complex permitting requirements (especially in some counties), and wildfire-zone installation rules in fire-risk areas.

Within California, prices vary by region:

Southern California (LA, San Diego, Orange County): $2.90–$3.20/watt
Northern California (Bay Area, Sacramento): $2.80–$3.14/watt
Rural or remote areas: $3.10–$3.50/watt (higher labor/travel costs)

If a quote comes in above $3.50/watt, get a second opinion. If it comes in below $2.40/watt, ask why — it may reflect cheaper panels or compressed margins that won’t hold up on service calls.

Why California Electricity Rates Make Solar Attractive

California residential customers paid an average of $0.30–$0.34/kWh in early 2026 — roughly twice the national average of ~$0.16/kWh. PG&E, SCE, and SDG&E customers are frequently on time-of-use (TOU) rates where peak-hour electricity (4–9 PM) runs $0.40–$0.55/kWh.

High rates accelerate solar payback. Every kilowatt-hour your panels produce and you consume directly is worth $0.30–$0.55 in avoided cost — far more than what solar earns for exported power under the current net metering rules.

California Net Metering: What Changed With NEM 3.0

This is the most important thing California solar buyers need to understand in 2026.

NEM 2.0 (old system): Excess solar power exported to the grid was credited at the full retail rate (~$0.30/kWh). Solar-only systems could largely zero out electric bills.

NEM 3.0 / Net Billing Tariff (new system, April 2023 onward): Export credits dropped to roughly $0.04–$0.08/kWh at midday — when solar produces the most — because the utilities now pay “avoided cost” rather than retail rate. Evening exports (4–9 PM) earn more ($0.15–$0.40/kWh), but that’s when solar panels aren’t generating.

Practical impact: A solar-only system that exports excess midday generation will earn very little credit for that power. Payback periods for solar-only systems under NEM 3.0 have stretched to 9–13 years.

The fix: Pair solar with a battery. A battery stores midday surplus and dispatches it during peak-rate evening hours, when it’s worth $0.40–$0.55/kWh in either grid cost avoided or virtual export credits. Systems with battery storage typically see payback periods of 7–9 years in California under NEM 3.0.

NEM 3.0 Applies To: PG&E, SCE, SDG&E Customers

Municipal utilities operate their own net metering programs. LADWP, SMUD, Silicon Valley Power, and others generally offer more favorable export terms than the investor-owned utilities. If you’re served by a municipal utility, ask about their specific net metering policy before assuming NEM 3.0 applies to you.

California Solar Incentives and Rebates (2026)

1. Federal Investment Tax Credit (ITC) — 30%

The biggest incentive available to California homeowners. The 30% ITC applies to panels, labor, permits, and battery storage when installed with solar (or standalone starting in 2023 under the Inflation Reduction Act).

A $28,000 system earns an $8,400 federal tax credit applied directly to your tax bill. The credit is non-refundable — it reduces what you owe, not what you get refunded — and can be carried forward to subsequent tax years if it exceeds your liability in year one.

See the federal solar tax credit guide for full details on eligibility and how to claim it on IRS Form 5695.

2. California Property Tax Exclusion

California law (Revenue and Taxation Code Section 73) excludes the added value of a solar system from property tax assessment. Adding $30,000 of solar to your home will not increase your property taxes. This exclusion is set to expire for new installations after January 1, 2027. Systems installed and operational before that date are grandfathered.

3. SGIP Battery Rebate

The Self-Generation Incentive Program (SGIP) offers rebates on battery storage. As of 2026, the general market budget is depleted and on waitlist, but the Equity budget remains available for low-income customers and those in high fire-risk areas — up to $1.10/Wh for qualifying systems (a 13.5 kWh Tesla Powerwall could earn up to ~$14,850 in SGIP incentive).

If you’re in a PG&E, SCE, or SDG&E territory and live in a Tier 2 or Tier 3 fire hazard severity zone or qualify as a low-income customer, you may be eligible. Ask your installer to check your SGIP eligibility before signing anything.

4. No California State Income Tax Credit

California does not currently offer a state-level solar income tax credit. The federal 30% ITC is the only income-tax-based incentive available.

5. Utility-Specific Rebates

Some California utilities offer periodic rebates for battery storage or solar panels, particularly for customers in fire-prone areas. Check with your utility at the time of your quote — these programs open and close based on available funding.

Is Solar Worth It in California in 2026?

For most homeowners: yes, with the right setup.

California’s extremely high electricity rates remain the single biggest argument for solar. Even under NEM 3.0, a solar + battery system allows you to dramatically reduce your reliance on peak-rate grid power. Payback periods of 7–9 years on a system warranted for 25 years represent a strong return.

Solar makes the most sense if you:
– Pay $200+/month in electricity bills
– Are a customer of PG&E, SCE, or SDG&E (high rates)
– Can add a battery to capture evening savings
– Own your home
– Plan to stay 8+ years
– Qualify for SGIP battery rebates

Solar is harder to justify if you:
– Pay less than $100/month in electricity
– Are a renter (you don’t own the system or get the ITC)
– Have heavy shading or a north-facing roof
– Are served by a municipal utility with already-low rates
– Plan to move in 3–5 years

See the full is solar worth it guide for a deeper breakdown of the math.

Top Solar Companies in California

These companies have established track records across California and are worth getting quotes from. A reputable installer will pull all permits, handle utility interconnection, and stand behind their work warranty.

Sunrun — The largest U.S. residential solar company, with heavy California presence. Offers purchase, loan, lease, and PPA options. Strong customer service infrastructure. A good option if you want flexible financing or prefer a well-funded national company.
Palmetto Solar — Manages the full process from design through permitting and installation. Offers a 25-year output warranty and an optional $12/month service plan. Available across most of California.
Tesla Solar — Competitive pricing, available nationwide, installs through Tesla stores and Home Depot locations. Pairs well with Tesla Powerwall 3. Lower-touch sales process; requires comfort with a self-directed quote experience.
NRG Clean Power — California-based, consistently high customer ratings (4.9★). Strong in Northern and Southern California. Local knowledge matters for permitting in complex California counties.
Ameco Solar — Established California regional installer (Burbank-based) with 50+ years of history. Primarily serves Southern California. Known for quality installations and strong warranty support.

Getting quotes from at least 3 companies is strongly recommended. Prices in California vary by 20–30% between installers for equivalent equipment. See the best solar companies guide for our full national comparison.

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California Solar Cost: Worked Examples

Example 1 — San Diego, $300/month bill

Monthly bill: $300 (SDG&E)
Estimated system size: 10 kW
System cost before ITC: $30,000
Federal tax credit (30%): −$9,000
Net cost: $21,000
Battery add-on (Tesla Powerwall 3): +$9,500 (additional ~$2,850 ITC credit)
Total after all incentives: ~$27,650
Estimated payback (with battery, NEM 3.0): 8–9 years
25-year savings estimate: $45,000–$60,000

Example 2 — Sacramento, $180/month bill (SMUD territory)

Monthly bill: $180 (SMUD — more favorable net metering than PG&E/SCE/SDG&E)
Estimated system size: 7 kW
System cost before ITC: $19,600
Federal tax credit (30%): −$5,880
Net cost: $13,720
Payback (solar only, SMUD’s favorable NEM): 7–8 years
25-year savings estimate: $30,000–$42,000

Example 3 — Los Angeles, $220/month bill (SCE territory)

Monthly bill: $220 (SCE)
Estimated system size: 8 kW
System cost before ITC: $24,000
Federal tax credit (30%): −$7,200
Net cost (solar only): $16,800
Battery add-on (Enphase IQ 5P): +$7,000 (additional ~$2,100 ITC)
Total after all incentives: ~$21,700
Estimated payback (with battery, NEM 3.0): 7–9 years

How to Compare Solar Quotes in California

Getting multiple quotes is the single most important step to avoid overpaying. Here’s how to compare them correctly:

Standardize on cost per watt. Divide total price by system size in watts. If one installer quotes you $25,000 for 8 kW ($3.13/watt) and another quotes $22,000 for 8 kW ($2.75/watt), ask the second installer what panels they’re using. Cheaper per-watt often means lower-tier panels.
Check the panel brand. Tier 1 panels (REC, Qcells, SunPower/Maxeon, Jinko, Canadian Solar) carry better warranties and more predictable long-term output. Be cautious of no-name panels on a discounted system.
Ask about NEM 3.0 and battery sizing. Any California installer worth hiring in 2026 should proactively explain how NEM 3.0 affects your specific utility and sizing their battery recommendation accordingly. If they don’t mention it, that’s a red flag.
Verify the workmanship warranty. Standard is 10 years. Better companies offer 25 years. Ask specifically who backs the workmanship warranty — the installer or a third party — and whether the company has been in business long enough to honor it.
Check CSLB license. California installers must hold a California Contractors State License Board (CSLB) license, typically C-10 (electrical) or C-46 (solar). Verify at cslb.ca.gov before signing a contract.

Methodology

SolarMetric researches California solar costs using data from EnergySage’s installer marketplace (which aggregates real quoted prices from competing installers), SolarReviews, EIA residential electricity rate tables, CPUC filings for NEM 3.0 export rates, SGIP program administrator reports, and direct review of installer pricing and warranty terms. Cost data is updated regularly. The figures on this page reflect May 2026 market conditions.

FAQ

What is the average cost of solar panels in California in 2026?
The average installed cost is $2.80–$3.14 per watt in California, or $22,400–$25,100 for a typical 8 kW system before incentives. After the 30% federal tax credit, that drops to approximately $15,700–$17,600. Costs vary by region, installer, and panel brand.

Does California still have net metering in 2026?
California switched from traditional net metering to NEM 3.0 (Net Billing Tariff) in April 2023. PG&E, SCE, and SDG&E customers now receive export credits of roughly $0.04–$0.08/kWh for midday solar exports — far below the retail rate. Battery storage is now essential for maximizing California solar economics under this policy.

Is there a California state solar tax credit?
No. California does not offer a state income tax credit for solar panels. The 30% federal Investment Tax Credit (ITC) is the primary tax incentive. California does offer a property tax exclusion (solar adds no taxable value to your home) and SGIP battery rebates for eligible customers.

How long is the solar payback period in California?
With battery storage under NEM 3.0, most California homeowners see payback periods of 7–9 years. Solar-only systems with PG&E, SCE, or SDG&E can stretch to 9–13 years due to low midday export credits. Municipal utility customers (LADWP, SMUD) with more favorable net metering typically see 6–8 year paybacks.

Should I add a battery in California?
Under NEM 3.0, yes — for most customers. A battery lets you store midday solar production and use it during 4–9 PM peak hours instead of exporting it at $0.04–$0.08/kWh and buying it back at $0.40–$0.55/kWh. The math usually favors battery storage. Also check SGIP eligibility, which can dramatically cut the battery’s net cost.

What permits are required for solar in California?
Most California jurisdictions require a building permit, electrical permit, and utility interconnection approval. In fire hazard severity zones, additional requirements apply (ember-resistant venting, setbacks). Your installer handles all permits — but expect the process to take 4–12 weeks depending on your county’s backlog. Some counties (LA County) have notoriously slow permit processing.