Antioch, CA 94531 solar market data
Updated April 20, 2026 By The SolarDNA Data Team
Antioch 94531 has 7,002 solar installations at a median installed cost of $4.25/W, installations down 19.3% over the trailing twelve months, and a Market Score of 44 — higher than 58% of U.S. zip markets.
Versus California
How 94531 compares with the state
Installed cost
$0.02/W below
state median $4.26/W
Market score
44 vs 53
California scores 53
Share of state installs
0.31%
of 2.3M tracked statewide
Battery attach
9.3%
state 12.7%
Statewide momentum
▲ 1.1%
residential solar added in California, 12 months through Jul 2026
Statewide market
2.3M systems
30.9% of homes · utility-reported through Jul 2026
Next-12-month outlook: 410–502 installs (midpoint 456)
Trailing-12-month installs carried forward at half the observed growth rate (capped at ±30%), with a ±10% band. Not a forecast of permits or policy.
Growth & pricing
94531 by year
505 installs in the trailing twelve months vs 626 before
Installations by year
Median installed cost, $/W DC by year
Installer comp set
Who installs in 94531
Ranked by systems recorded in this zip
| # | Installer | Installs | 12-mo | Avg kW | $/W |
|---|---|---|---|---|---|
| 1 | SUNRUN | 1,360 | 197 | 6.83 | $4.24 |
| 2 | SUNPOWER | 1,030 | 1 | 6.23 | $4.25 |
| 3 | TESLA | 826 | 34 | 7.5 | $5.12 |
| 4 | CITADEL ROOFING AND SOLAR | 499 | 80 | 4.14 | $2.85 |
| 5 | BRIGHT OPS | 346 | 18 | 6.89 | $4.37 |
| 6 | INFINITY ENERGY | 251 | 1 | 5.33 | $3.79 |
| 7 | FREEDOM FOREVER | 192 | 40 | 7.41 | $4.79 |
| 8 | WEST COAST SOLAR | 145 | 2 | 8.04 | $3.95 |
| 9 | PETERSENDEAN | 132 | 0 | 6.69 | $3.68 |
| 10 | AMERICAN ARRAY SOLAR | 107 | 0 | 6.61 | $4.36 |
| 11 | COMPLETE SOLAR | 83 | 9 | 4.82 | $4.58 |
| 12 | VISION SOLAR | 74 | 0 | 5.51 | $3.11 |
Neighboring zips
The nearest zip markets
By distance between zip centroids
| Zip | Distance | Installs | $/W | Score |
|---|---|---|---|---|
| 94509 Antioch | 4.3 km | 5,579 | $4.56 | 43 |
| 94561 Oakley | 7.1 km | 6,572 | $4.25 | 51 |
| 94513 Brentwood | 8.4 km | 11,478 | $4.25 | 48 |
| 94548 Knightsen | 9.7 km | 80 | $3.81 | 41 |
| 94517 Clayton | 13.0 km | 1,440 | $4.37 | 43 |
| 94565 Pittsburg | 13.1 km | 6,737 | $4.56 | 47 |
Same city
Other zips in Antioch
Equipment
What gets installed in 94531
Share of systems with a recorded brand
Modules
QCELLS NORTH AMERICA20.8%
SUNPOWER12.5%
LONGI GREEN ENERGY TECHNOLOGY11.7%
CSI SOLAR6.9%
REC SOLAR6.0%
Inverters
ENPHASE ENERGY38.3%
SOLAREDGE26.1%
SUNPOWER11.7%
TESLA5.4%
FRONIUS USA3.8%
Frequently asked
Quick answers about 94531
How many solar installations are there in 94531?
SolarDNA counts 7,002 active solar installations in Antioch 94531, 6,985 of them residential, with data through April 20, 2026.
How much does solar cost in 94531?
The median residential system in 94531 cost $4.25 per watt over the trailing twelve months, $0.02/W below the California median.
Is solar growing in 94531?
Installations in 94531 are down 19.3%: 505 in the trailing twelve months versus 626 before.
Who installs solar in 94531?
SUNRUN, SUNPOWER, TESLA lead the 342 installers with systems in 94531. The full comp set is above.
Is 94531 a good market for solar sales?
94531 scores 44 out of 100 (Good, higher than 58% of U.S. zip markets).