What solar costs in Northern California in 2026
Straight numbers, no sales spin. Here’s what a rooftop solar — and battery — system typically costs in Northern California in 2026, and what actually drives your price.
Price per watt & typical system cost
Residential solar in Northern California generally runs about $3.50–$4.50 per watt installed before incentives, depending on installer, equipment and roof complexity. A common 7 kW system therefore runs about $24,500–$31,500 gross; a larger 10 kW system about $35,000–$45,000. Premium panels and microinverters sit at the top of the range; value equipment at the bottom.
Adding a battery
Under NEM 3.0, most Northern California homeowners pair solar with storage. A single home battery typically adds $10,000–$18,000 depending on capacity and brand, before any SGIP rebate. Batteries are what deliver PSPS backup and let you dodge the expensive evening peak, so they change both your resilience and your payback.
What changed with incentives
The big shift: the 30% federal residential solar tax credit ended after 2025. A cash or financed purchase in 2026 no longer earns it. What remains for some buyers: California’s SGIP storage rebate is now largely limited to income-qualified households (its broad tiers closed after 2025), and lease / PPA financing may still use the federal business credit through 2027 and pass some savings through. Always compare a cash quote against a financed one.
What drives your number
Your real cost depends on roof size and pitch, shading, panel and inverter choice, whether you add a battery, your electrical panel, and financing. The honest way to start is with your own roof: the rooftop designer estimates system size, production and an itemized price from satellite imagery — before you ever talk to a salesperson.
The fastest way past the sales pitch is your own numbers. Design a system for your address in about a minute — no signup.
How much does solar cost in Northern California in 2026?
Expect roughly $3.50-$4.50 per watt installed before incentives. A typical 7 kW system runs about $24,500-$31,500, and a 10 kW system about $35,000-$45,000. Adding a home battery typically costs another $10,000-$18,000.
Is there still a solar tax credit in 2026?
The 30% federal residential solar tax credit ended after 2025, so a cash or financed purchase no longer earns it. California's SGIP battery rebate remains, and lease/PPA financing may still capture the federal business credit through 2027.
How do I get an accurate price for my home?
Start with the free rooftop designer, which estimates your system size, production and an itemized price from satellite imagery, then get a firm written quote from a licensed local installer to confirm it.
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Golden State Solar Guide is an independent guide, not a solar installer. We give you honest information, then connect you with a vetted, licensed local solar professional if you want one. You’re never obligated to buy.