Solar installers and cost in California
Homes that bought solar in 2023–2025 paid a median $4.07/W installed, about $24,400 for a typical 6 kW system. 3,963 installers have put in home systems here since 2023. Find the ones working in your county.
Solar by county
Median installed price where enough systems were bought outright (2023–2025). Lighter is cheaper. Choose a county for its installers.
Solar installers in California
| Installer | Homes since 2023 | Median price |
|---|---|---|
| SunrunBased in San Francisco, CA · (805) 242-7255 | 118,902 | $3.60/W$0.47 below median |
| SunPowerBased in Richmond, CA · (908) 216-1280 | 43,527 | $4.25/W$0.18 above median |
| TeslaBased in Fremont, CA · (702) 680-6683 | 26,155 | $2.73/W$1.34 below median |
| Bright OpsBased in Worcester, MA · (888) 997-4469 | 21,083 | $5.26/W$1.19 above median |
| Freedom ForeverBased in Temecula, CA · (800) 885-9450 | 18,695 | $4.91/W$0.84 above median |
| Sunnova EnergyBased in Houston, TX · (281) 985-9820 | 11,295 | $3.99/W$0.08 below median |
| Citadel Roofing And SolarBased in Vacaville, CA · (707) 446-5500 | 10,153 | $2.78/W$1.29 below median |
| Better EarthBased in Cerritos, CA · (888) 373-9379 | 8,226 | $5.00/W$0.93 above median |
| Semper SolarisBased in El Cajon, CA · (619) 715-4054 | 8,151 | $4.45/W$0.38 above median |
| Infinity EnergyBased in Rocklin, CA · (916) 474-4723 | 7,663 | $4.98/W$0.91 above median |
| V3 ElectricBased in El Dorado Hills, CA · (844) 837-6937 | 6,932 | $5.68/W$1.61 above median |
| PowurBased in Del Mar, CA · (480) 626-7056 | 6,012 | $4.33/W$0.26 above median |
| ESP ContractingBased in Torrance, CA · (866) 865-4559 | 6,003 | $4.23/W$0.16 above median |
| Baker Electric SolarBased in Escondido, CA · (760) 546-6000 | 5,237 | $4.56/W$0.49 above median |
| Empower ElectricBased in Clovis, CA · (800) 306-6953 | 5,136 | $5.65/W$1.58 above median |
| Complete SolarBased in Lehi, UT · (877) 299-4943 | 4,931 | $4.25/W$0.18 above median |
| Solar Optimum Design ElectricalBased in Glendale, CA · (818) 804-3122 | 4,639 | $3.11/W$0.96 below median |
| Solar NegotiatorsBased in Fresno, CA · (559) 447-1557 | 3,777 | $3.80/W$0.27 below median |
| Bright Planet SolarBased in Auburn, MA · (801) 388-7601 | 3,362 | $5.97/W$1.90 above median |
| Lifestyle SolarBased in Fresno, CA · (559) 228-0229 | 3,241 | $2.97/W$1.10 below median |
| EXO EnergyBased in Temecula, CA · (760) 502-7448 | 3,035 | $3.80/W$0.27 below median |
| KOTA ConstructionBased in Newbury Park, CA · (858) 328-2841 | 2,944 | $5.14/W$1.07 above median |
| Leonard RoofingBased in Temecula, CA · (951) 506-3811 | 2,892 | $3.98/W$0.09 below median |
| Titan SolarBased in Mesa, AZ · (855) 729-7652 | 2,507 | $5.28/W$1.21 above median |
| GAF EnergyBased in San Rafael, CA · (503) 887-9167 | 2,413 | $7.90/W$3.83 above median |
| NRG Clean EnergyBased in Canoga Park, CA · (800) 698-6627 | 2,364 | $3.24/W$0.83 below median |
| Renova EnergyBased in Palm Desert, CA · (760) 568-3413 | 2,264 | $4.37/W$0.30 above median |
| SolarMaxBased in Riverside, CA · (951) 300-0755 | 2,134 | $3.65/W$0.42 below median |
| Titanium SolarBased in Rancho Cucamonga, CA · (626) 689-7198 | 2,062 | $6.28/W$2.21 above median |
| Stellar SolarBased in Carlsbad, CA · (760) 445-1627 | 2,054 | $4.08/W |
Ranked by homes installed, which shows who’s active here, not who’s best. Prices are each company’s median for systems sold outright, shown when it sold at least 10. Show all 3,963 installers
| County | Median price | Installers | Homes since 2023 |
|---|---|---|---|
| Alameda County | $4.04/W | 493 | 20,774 |
| Alpine County | $3.63/W | 23 | 57 |
| Amador County | $3.72/W | 133 | 1,353 |
| Butte County | $3.40/W | 216 | 5,544 |
| Calaveras County | $3.60/W | 142 | 1,407 |
| Colusa County | $4.10/W | 78 | 540 |
| Contra Costa County | $4.00/W | 530 | 22,918 |
| El Dorado County | $3.34/W | 285 | 5,511 |
| Fresno County | $3.71/W | 413 | 26,844 |
| Glenn County | $4.17/W | 83 | 662 |
| Humboldt County | $3.89/W | 96 | 1,362 |
| Imperial County | — | 10 | 10 |
| Inyo County | — | 6 | 21 |
| Kern County | $3.85/W | 430 | 26,794 |
| Kings County | $4.15/W | 205 | 5,124 |
| Lake County | $4.13/W | 118 | 1,364 |
| Lassen County | $3.56/W | 24 | 53 |
| Los Angeles County | $4.25/W | 1,123 | 60,317 |
| Madera County | $3.46/W | 236 | 6,857 |
| Marin County | $4.18/W | 275 | 5,208 |
| Mariposa County | $3.91/W | 83 | 387 |
| Mendocino County | $3.66/W | 106 | 738 |
| Merced County | $4.25/W | 216 | 4,724 |
| Mono County | $4.40/W | 32 | 291 |
| Monterey County | $4.25/W | 234 | 4,751 |
| Napa County | $4.25/W | 205 | 2,443 |
| Nevada County | $4.03/W | 163 | 1,734 |
| Orange County | $3.89/W | 863 | 37,033 |
| Placer County | $3.42/W | 358 | 10,451 |
| Plumas County | $3.76/W | 37 | 105 |
| Riverside County | $4.25/W | 817 | 60,511 |
| Sacramento County | $4.46/W | 50 | 111 |
| San Benito County | $4.25/W | 113 | 1,767 |
| San Bernardino County | $4.25/W | 740 | 46,544 |
| San Diego County | $4.02/W | 898 | 66,953 |
| San Francisco County | $4.47/W | 166 | 2,315 |
| San Joaquin County | $3.95/W | 379 | 18,630 |
| San Luis Obispo County | $3.99/W | 207 | 6,910 |
| San Mateo County | $4.04/W | 357 | 7,802 |
| Santa Barbara County | $4.15/W | 223 | 5,276 |
| Santa Clara County | $3.95/W | 526 | 24,478 |
| Santa Cruz County | $4.64/W | 200 | 3,360 |
| Shasta County | $3.82/W | 128 | 1,598 |
| Sierra County | — | 9 | 11 |
| Solano County | $3.89/W | 317 | 10,873 |
| Sonoma County | $3.86/W | 330 | 8,503 |
| Stanislaus County | $3.51/W | 114 | 1,754 |
| Sutter County | $3.88/W | 170 | 2,427 |
| Tehama County | $3.98/W | 140 | 1,833 |
| Trinity County | — | 6 | 8 |
| Tulare County | $4.13/W | 321 | 14,719 |
| Tuolumne County | $3.72/W | 125 | 1,627 |
| Ventura County | $4.25/W | 497 | 12,420 |
| Yolo County | $3.90/W | 248 | 5,486 |
| Yuba County | $3.13/W | 179 | 3,258 |
A county shows a price once at least 20 of its systems were bought outright.
How much does solar cost in California?
Homes in California that bought a solar system in 2023–2025 paid a median $4.07/W installed, about $24,400 for a 6 kW system, before incentives. The middle half paid $3.21/W to $4.83/W.
Who are the most active solar installers in California?
By homes installed since 2023, the most active installers in California are Sunrun, SunPower, Tesla, Bright Ops, Freedom Forever. Being busiest doesn't make a company the best choice: get several quotes and compare price per watt, equipment and warranty.
How much does a 10 kW solar system cost in California?
At the California median of $4.07/W, a 10 kW system costs about $40,700 installed before incentives; the middle half of buyers would pay $32,100 to $48,300.
Installed prices and installers from public installation records: Lawrence Berkeley National Laboratory’s Tracking the Sun (systems installed through 2025) and state program files from California, New York, New Jersey, Connecticut, Illinois and Oregon, which run into 2026. Prices are in dollars per watt of panel capacity (DC), before rebates and tax credits, for homes that bought their system; leased systems and systems with batteries are left out.