Clayton, CA 94517 solar market data
Updated April 29, 2026 By The SolarDNA Data Team
Clayton 94517 has 1,440 solar installations at a median installed cost of $4.37/W, installations down 8.9% over the trailing twelve months, and a Market Score of 43 — higher than 56% of U.S. zip markets.
Versus California
How 94517 compares with the state
Installed cost
$0.11/W above
state median $4.26/W
Market score
43 vs 53
California scores 53
Share of state installs
0.06%
of 2.3M tracked statewide
Battery attach
10.8%
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: 62–76 installs (midpoint 69)
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
94517 by year
72 installs in the trailing twelve months vs 79 before
Installations by year
Median installed cost, $/W DC by year
Installer comp set
Who installs in 94517
Ranked by systems recorded in this zip
| # | Installer | Installs | 12-mo | Avg kW | $/W |
|---|---|---|---|---|---|
| 1 | SUNRUN | 238 | 15 | 6.96 | $4.45 |
| 2 | TESLA | 178 | 7 | 7.67 | $5.12 |
| 3 | SUNPOWER | 62 | 0 | 12.43 | $4.25 |
| 4 | DIABLO SOLAR SERVICES | 56 | 2 | 7.81 | $4.11 |
| 5 | WEST COAST SOLAR | 53 | 2 | 7.83 | $3.75 |
| 6 | THE SOLAR COMPANY | 39 | 0 | 5.79 | $6.27 |
| 7 | BRIGHT OPS | 36 | 1 | 6.79 | $4.38 |
| 8 | KOTA CONSTRUCTION | 35 | 0 | 7.52 | $5.01 |
| 9 | SEMPER SOLARIS | 34 | 2 | 6.79 | $4.65 |
| 10 | PETERSENDEAN | 31 | 0 | 7.73 | $3.85 |
| 11 | SUNGEVITY | 21 | 0 | 6.94 | $3.72 |
| 12 | YOUR ENERGY SOLUTIONS | 20 | 2 | 9.22 | $3.33 |
Equipment
What gets installed in 94517
Share of systems with a recorded brand
Modules
SUNPOWER13.9%
QCELLS NORTH AMERICA12.1%
LG ELECTRONICS7.2%
CSI SOLAR6.2%
REC GROUP5.5%
Inverters
ENPHASE ENERGY32.5%
SOLAREDGE28.6%
SUNPOWER10.7%
TESLA7.5%
SMA AMERICA5.4%
Frequently asked
Quick answers about 94517
How many solar installations are there in 94517?
SolarDNA counts 1,440 active solar installations in Clayton 94517, 1,418 of them residential, with data through April 29, 2026.
How much does solar cost in 94517?
The median residential system in 94517 cost $4.37 per watt over the trailing twelve months, $0.11/W above the California median.
Is solar growing in 94517?
Installations in 94517 are down 8.9%: 72 in the trailing twelve months versus 79 before.
Who installs solar in 94517?
SUNRUN, TESLA, SUNPOWER lead the 211 installers with systems in 94517. The full comp set is above.
Is 94517 a good market for solar sales?
94517 scores 43 out of 100 (Good, higher than 56% of U.S. zip markets).