Union City, CA 94587 solar market data
Updated April 28, 2026 By The SolarDNA Data Team
Union City 94587 has 3,106 solar installations at a median installed cost of $4.34/W, installations up 19.1% over the trailing twelve months, and a Market Score of 53 — higher than 96% of U.S. zip markets.
Zip Market Score
Excellent · higher than 96% of zips
Versus California
How 94587 compares with the state
Installed cost
$0.08/W above
state median $4.26/W
Market score
53 vs 53
California scores 53
Share of state installs
0.14%
of 2.3M tracked statewide
Battery attach
11.0%
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: 203–249 installs (midpoint 226)
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
94587 by year
206 installs in the trailing twelve months vs 173 before
Installations by year
Median installed cost, $/W DC by year
Installer comp set
Who installs in 94587
Ranked by systems recorded in this zip
| # | Installer | Installs | 12-mo | Avg kW | $/W |
|---|---|---|---|---|---|
| 1 | TESLA | 847 | 35 | 6.33 | $5.12 |
| 2 | SUNRUN | 563 | 45 | 6.21 | $4.37 |
| 3 | SUNPOWER | 187 | 3 | 5.15 | $4.34 |
| 4 | BETTER EARTH | 95 | 0 | 6.05 | $4.87 |
| 5 | PETERSENDEAN | 67 | 0 | 5.23 | $3.89 |
| 6 | SEMPER SOLARIS | 59 | 4 | 5.41 | $4.06 |
| 7 | YOUR ENERGY SOLUTIONS | 57 | 3 | 5.98 | $3.66 |
| 8 | FREEDOM FOREVER | 54 | 14 | 5.56 | $5.31 |
| 9 | SUNGEVITY | 47 | 0 | 6.34 | $3.42 |
| 10 | BRIGHT OPS | 43 | 8 | 5.05 | $5.08 |
| 11 | HOOKED ON SOLAR | 38 | 0 | 7.05 | $4.33 |
| 12 | AMERICAN ARRAY SOLAR | 35 | 0 | 5.79 | $3.50 |
Equipment
What gets installed in 94587
Share of systems with a recorded brand
Modules
QCELLS NORTH AMERICA16.6%
REC SOLAR9.3%
SUNPOWER9.3%
TRINA SOLAR5.7%
TESLA5.4%
Inverters
SOLAREDGE31.3%
ENPHASE ENERGY24.2%
TESLA12.3%
ABB9.0%
SUNPOWER7.9%
Frequently asked
Quick answers about 94587
How many solar installations are there in 94587?
SolarDNA counts 3,106 active solar installations in Union City 94587, 3,051 of them residential, with data through April 28, 2026.
How much does solar cost in 94587?
The median residential system in 94587 cost $4.34 per watt over the trailing twelve months, $0.08/W above the California median.
Is solar growing in 94587?
Installations in 94587 are up 19.1%: 206 in the trailing twelve months versus 173 before.
Who installs solar in 94587?
TESLA, SUNRUN, SUNPOWER lead the 276 installers with systems in 94587. The full comp set is above.
Is 94587 a good market for solar sales?
94587 scores 53 out of 100 (Excellent, higher than 96% of U.S. zip markets).