Solar installers in Contra Costa County
530 companies have installed solar on 22,918 homes here since 2023. Covers Concord, Antioch, Richmond, San Ramon, Pittsburg, Walnut Creek and nearby towns.
| Installer | Homes since 2023 | Median price in state |
|---|---|---|
| SunrunBased in San Francisco, CA · (805) 242-7255 | 4,639 | $3.60/W$0.47 below median |
| SunPowerBased in Richmond, CA · (908) 216-1280 | 1,923 | $4.25/W$0.18 above median |
| TeslaBased in Fremont, CA · (702) 680-6683 | 1,817 | $2.73/W$1.34 below median |
| Bright OpsBased in Worcester, MA · (888) 997-4469 | 1,391 | $5.26/W$1.19 above median |
| Citadel Roofing And SolarBased in Vacaville, CA · (707) 446-5500 | 1,281 | $2.78/W$1.29 below median |
| Freedom ForeverBased in Temecula, CA · (800) 885-9450 | 816 | $4.91/W$0.84 above median |
| Better EarthBased in Cerritos, CA · (888) 373-9379 | 518 | $5.00/W$0.93 above median |
| Got Watts ElectricBased in Pleasant Hill, CA · (925) 421-0957 | 442 | $3.80/W$0.27 below median |
| Semper SolarisBased in El Cajon, CA · (619) 715-4054 | 417 | $4.45/W$0.38 above median |
| West Coast SolarBased in Brentwood, CA · (925) 965-0190 | 366 | $3.78/W$0.29 below median |
| V3 ElectricBased in El Dorado Hills, CA · (844) 837-6937 | 352 | $5.68/W$1.61 above median |
| Ambrose SolarBased in Vacaville, CA · (707) 999-8036 | 339 | $4.53/W$0.46 above median |
| Empower ElectricBased in Clovis, CA · (800) 306-6953 | 316 | $5.65/W$1.58 above median |
| Your Energy SolutionsBased in Livermore, CA · (925) 380-9500 | 303 | $3.90/W$0.17 below median |
| Infinity EnergyBased in Rocklin, CA · (916) 474-4723 | 293 | $4.98/W$0.91 above median |
| KOTA ConstructionBased in Newbury Park, CA · (858) 328-2841 | 266 | $5.14/W$1.07 above median |
| Solar Optimum Design ElectricalBased in Glendale, CA · (818) 804-3122 | 253 | $3.11/W$0.96 below median |
| Sol R Us Electrical EngineeringBased in Concord, CA · (925) 664-8008 | 225 | $3.30/W$0.77 below median |
| Del Sol EnergyBased in Brentwood, CA · (925) 350-4121 | 214 | $3.56/W$0.51 below median |
| Solar Savings DirectBased in Shingle Springs, CA · (530) 344-3237 | 210 | $3.55/W$0.52 below median |
| Diablo Solar ServicesBased in Martinez, CA · (925) 313-0600 | 203 | $4.04/W |
| Solar TechnologiesBased in San Ramon, CA · (925) 939-8300 | 201 | $4.55/W$0.48 above median |
| United Solar ElectricBased in Brentwood, CA · (925) 679-4665 | 187 | $3.50/W$0.57 below median |
| Synergy Power CaBased in Livermore, CA · (925) 273-3515 | 185 | $3.69/W$0.38 below median |
| NRG Clean EnergyBased in Canoga Park, CA · (800) 698-6627 | 183 | $3.24/W$0.83 below median |
| PowurBased in Del Mar, CA · (480) 626-7056 | 182 | $4.33/W$0.26 above median |
| ESP ContractingBased in Torrance, CA · (866) 865-4559 | 171 | $4.23/W$0.16 above median |
| Abundant Energy ConstructionBased in Lehi, UT · (661) 412-9991 | 163 | $5.89/W$1.82 above median |
| Complete SolarBased in Lehi, UT · (877) 299-4943 | 160 | $4.25/W$0.18 above median |
| American Array SolarBased in Livermore, CA · (925) 453-6913 | 155 | $3.07/W$1.00 below median |
| Hooked On SolarBased in Rocklin, CA · (916) 823-3770 | 150 | $4.45/W$0.38 above median |
| North ValleyBased in Sacramento, CA · (916) 550-0358 | 137 | $3.50/W$0.57 below median |
| Northstar SolarBased in Danville, CA · (925) 322-9860 | 122 | $3.71/W$0.36 below median |
| Titan SolarBased in Mesa, AZ · (855) 729-7652 | 118 | $5.28/W$1.21 above median |
| All Electric SolarBased in Livermore, CA · (925) 738-8381 | 106 | $3.90/W$0.17 below median |
| Rockin RoofersBased in Petaluma, CA · (707) 285-7037 | 106 | $4.00/W$0.07 below median |
| Corda SolarBased in Danville, CA · (925) 381-0881 | 100 | $3.37/W$0.70 below median |
| High Definition SolarBased in Concord, CA · (925) 566-8282 | 85 | $5.95/W$1.88 above median |
| Green Day ElectricBased in Sacramento, CA · (916) 758-8030 | 77 | $3.93/W$0.14 below median |
| Illuminate SolarBased in Walnut Creek, CA · (925) 324-7176 | 75 | $3.19/W$0.88 below median |
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 530 installers
Towns in Contra Costa County: Concord, Antioch, Richmond, San Ramon, Pittsburg, Walnut Creek, Brentwood, Oakley, Danville, Martinez, Pleasant Hill, San Pablo.
Other California counties
How much does solar cost in Contra Costa County, CA?
Homes in Contra Costa County that bought solar in 2023–2025 paid a median $4.00/W installed, about $24,000 for a 6 kW system before incentives.
Which solar companies install in Contra Costa County, CA?
530 installers have put in home systems in Contra Costa County since 2023, the busiest being Sunrun, SunPower, Tesla, Bright Ops, Citadel Roofing And Solar.
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.