- Home
- Cost Guides
- Solar Panel
- San Francisco, CA
Solar · San Francisco, CA · 2026 cost guide
How much does solar panels cost in San Francisco, CA?
In the San Francisco-Oakland-Fremont, CA area, a typical 8 kW system before incentives runs about $28,000 to $39,200 in 2026, about 40% above the national range. Contractor labor here is indexed at 1.40 against the U.S. average, and that is what moves the numbers; equipment and materials cost about the same everywhere.
- Cost per watt
- $3.50–$4.90installed, before incentives
- 8 kW system
- $28,000–$39,200before incentives, about a $150 to $200 monthly bill
- 10 kW system
- $35,000–$49,000before incentives, about a $200 to $250 monthly bill
- Battery add-on
- $14,000–$25,200one 10 to 15 kWh battery, installed
Solar in San Francisco is a story about the retail rate. PG&E's residential price sits near $0.41 per kWh, among the highest in the country, so every kilowatt-hour a panel keeps off your bill is worth more here than almost anywhere. Against that, NEM 3.0 pays little for exported power, coastal fog trims output in the western city, and labor costs run about 40 percent above the national average. An 8 kW system typically costs $28,000 to $39,200 before incentives.
What's different in San Francisco
The metro averages about 5.2 peak sun hours a day, which is solid, but the average hides a wide spread. A roof in the Sunset or Richmond district loses a real share of summer production to fog, while a roof in Walnut Creek, Pleasanton, or Livermore is closer to a Central Valley site. Ask the installer to model your address, not the metro. Wildfire smoke in bad years, like September 2020, cuts output for days or weeks in the fall. Even with those losses, the math works: at about $0.41 per kWh, a modest system that covers your own daytime use pays back faster than a larger system in a cheap-power state.
Since April 2023, new PG&E solar customers are on NEM 3.0 net billing, which credits exports at a fraction of the retail rate. That changes design. Size the array to what you can use, and add a battery to move afternoon production into the evening, when PG&E's time-of-use rates peak and NEM 3.0 export credits are worth the most. In the East Bay hills, a battery also covers PG&E Public Safety Power Shutoffs during fire weather. Ask whether the state's SGIP battery program has funds open for your situation. The federal credit ended after 2025, so California's incentives and the rate itself are what remain.
Roofs and permits have local twists. Many San Francisco homes have flat or low-slope roofs, which need tilt racking and ballast or attachment details that add cost, and seismic anchoring is part of every design. Composition shingle roofs in the East Bay are the easy case. California requires Title 24 compliance, and many Bay Area cities offer SolarAPP+ instant permits for standard rooftop systems; SF DBI handles the city, and each East Bay city permits separately, so ask the installer which path applies. Check the installer's CSLB license (C-46 or C-10) and ask who services the system if they close.
Solar Panel prices in San Francisco vs. the national guide
These are the ranges from our national solar panels cost guide next to the same items scaled by the San Francisco, CA labor index of 1.40. Rows marked fixed are materials only and do not move with local labor.
| Item | National range | San Francisco, CA |
|---|---|---|
| Cost per watt | $2.50–$3.50 | $3.50–$4.90 |
| 8 kW system | $20,000–$28,000 | $28,000–$39,200 |
| 10 kW system | $25,000–$35,000 | $35,000–$49,000 |
| Battery add-on | $10,000–$18,000 | $14,000–$25,200 |
Local tip: Size the system to your daytime use and pair it with a battery; under PG&E's NEM 3.0 and rates near $0.41 per kWh, stored solar used at the evening peak beats exported solar by a wide margin.
San Francisco at a glance
- Climate zone
- 3Cmarine
- Labor index
- 1.40vs. U.S. average 1.00
- Electricity
- $0.41/kWhPG&E
- Peak sun hours
- 5.2kWh/m²/day, annual average
Want a number for your San Francisco home instead of a metro range?
Answer six quick questions and get a cost range for your solar panels project, then quotes from up to four licensed pros who work your ZIP. Free, and you can ignore the calls.
Get my solar estimate →Solar Panel cost questions in San Francisco, answered.
Is solar worth it in San Francisco with all the fog?
Usually, because of the rate rather than the sun. At PG&E prices near $0.41 per kWh, even a west-side roof that loses a chunk of summer production to fog offsets expensive power. The key is to size for self-consumption under NEM 3.0 rather than to export, and to get production modeled for your specific address. A Sunset district roof and a Livermore roof can differ by a fifth or more in annual output.
What does NEM 3.0 mean for a PG&E customer adding solar?
Exports are credited at a rate well below what you pay for imports, so a system that overproduces at noon and buys back at 7 p.m. loses money on every cycle. The fix is a battery, or at least a system sized to daytime use with loads shifted into sunny hours. Anyone who signed up before April 2023 keeps their old net metering terms for a period, so if you have an existing system, confirm your status before expanding it.
Do I need a battery with solar in the Bay Area?
Under NEM 3.0, most new PG&E systems include one, and installers now design around it. A battery moves midday solar into the expensive evening peak and provides backup during Public Safety Power Shutoffs, which hit the East Bay hills and Marin during fire weather. Ask whether the state's SGIP program has incentive funds open for your situation; availability varies by year and by customer type. Batteries add substantially to the bill, so get the cash price.
How do solar permits work in San Francisco versus the East Bay?
Each city permits separately. San Francisco goes through SF DBI, while Oakland, Berkeley, Fremont, and the Contra Costa cities each run their own process, and many Bay Area cities have adopted SolarAPP+ for instant approval of standard rooftop systems. California Title 24 applies everywhere. Ask the installer which path your address gets and how long PG&E interconnection is taking, since utility approval, not the permit, is usually the slow step.
Solar Panel costs in nearby metros
Solar Panel cost in Los Angeles, CA
Los Angeles-Long Beach-Anaheim, CA. Labor index 1.15, climate zone 3B.
Read the Los Angeles guide → SolarSolar Panel cost in Riverside, CA
Riverside-San Bernardino-Ontario, CA. Labor index 1.05, climate zone 3B.
Read the Riverside guide → SolarSolar Panel cost in Phoenix, AZ
Phoenix-Mesa-Chandler, AZ. Labor index 0.95, climate zone 2B.
Read the Phoenix guide → SolarSolar Panel cost in Denver, CO
Denver-Aurora-Centennial, CO. Labor index 1.00, climate zone 5B.
Read the Denver guide →