Discovery Bay, CA 94505 solar market data
Updated April 20, 2026 By The SolarDNA Data Team
Discovery Bay 94505 has 2,632 solar installations at a median installed cost of $4.20/W, installations up 4.9% over the trailing twelve months, and a Market Score of 50 — higher than 88% of U.S. zip markets.
Versus California
How 94505 compares with the state
Installed cost
$0.06/W below
state median $4.26/W
Market score
50 vs 53
California scores 53
Share of state installs
0.12%
of 2.3M tracked statewide
Battery attach
11.3%
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: 158–194 installs (midpoint 176)
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
94505 by year
172 installs in the trailing twelve months vs 164 before
Installations by year
Median installed cost, $/W DC by year
Installer comp set
Who installs in 94505
Ranked by systems recorded in this zip
| # | Installer | Installs | 12-mo | Avg kW | $/W |
|---|---|---|---|---|---|
| 1 | SUNRUN | 489 | 69 | 7.75 | $4.20 |
| 2 | TESLA | 370 | 12 | 8.05 | $5.12 |
| 3 | WEST COAST SOLAR | 269 | 5 | 8.9 | $3.83 |
| 4 | BRIGHT OPS | 139 | 11 | 7.61 | $4.36 |
| 5 | PETERSENDEAN | 92 | 0 | 6.83 | $3.90 |
| 6 | DEL SOL ENERGY | 81 | 0 | 8.99 | $3.71 |
| 7 | SUNGEVITY | 77 | 0 | 7.23 | $3.53 |
| 8 | SUNPOWER | 64 | 0 | 8.33 | $4.51 |
| 9 | FREEDOM FOREVER | 62 | 6 | 7.97 | $4.56 |
| 10 | CITADEL ROOFING AND SOLAR | 47 | 8 | 4.58 | $3.08 |
| 11 | SEMPER SOLARIS | 40 | 4 | 8.08 | $4.39 |
| 12 | HOOKED ON SOLAR | 28 | 0 | 8.84 | $4.32 |
Equipment
What gets installed in 94505
Share of systems with a recorded brand
Modules
QCELLS NORTH AMERICA17.8%
SUNPOWER8.3%
CSI SOLAR8.2%
LG ELECTRONICS7.7%
REC SOLAR7.1%
Inverters
SOLAREDGE38.6%
ENPHASE ENERGY23.3%
TESLA7.0%
SUNPOWER6.7%
FRONIUS USA6.1%
Frequently asked
Quick answers about 94505
How many solar installations are there in 94505?
SolarDNA counts 2,632 active solar installations in Discovery Bay 94505, 2,629 of them residential, with data through April 20, 2026.
How much does solar cost in 94505?
The median residential system in 94505 cost $4.20 per watt over the trailing twelve months, $0.06/W below the California median.
Is solar growing in 94505?
Installations in 94505 are up 4.9%: 172 in the trailing twelve months versus 164 before.
Who installs solar in 94505?
SUNRUN, TESLA, WEST COAST SOLAR lead the 248 installers with systems in 94505. The full comp set is above.
Is 94505 a good market for solar sales?
94505 scores 50 out of 100 (Great, higher than 88% of U.S. zip markets).