Walnut Creek, CA 94596 solar market data
Updated April 23, 2026 By The SolarDNA Data Team
Walnut Creek 94596 has 1,320 solar installations at a median installed cost of $4.23/W, installations up 8.5% over the trailing twelve months, and a Market Score of 47 — higher than 77% of U.S. zip markets.
Versus California
How 94596 compares with the state
Installed cost
$0.04/W below
state median $4.26/W
Market score
47 vs 53
California scores 53
Share of state installs
0.06%
of 2.3M tracked statewide
Battery attach
12.0%
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: 72–88 installs (midpoint 80)
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
94596 by year
77 installs in the trailing twelve months vs 71 before
Installations by year
Median installed cost, $/W DC by year
Installer comp set
Who installs in 94596
Ranked by systems recorded in this zip
| # | Installer | Installs | 12-mo | Avg kW | $/W |
|---|---|---|---|---|---|
| 1 | TESLA | 165 | 13 | 9.49 | $4.94 |
| 2 | SUNRUN | 127 | 11 | 7.64 | $4.18 |
| 3 | DIABLO SOLAR SERVICES | 63 | 2 | 6.72 | $4.53 |
| 4 | SOLAR TECHNOLOGIES | 48 | 4 | 16.91 | $4.62 |
| 5 | SUNPOWER | 45 | 0 | 33.14 | $4.44 |
| 6 | PETERSENDEAN | 35 | 0 | 5.86 | $4.18 |
| 7 | SKY POWER SOLAR | 31 | 0 | 7.55 | $4.08 |
| 8 | WEST COAST SOLAR | 31 | 0 | 6.93 | $3.75 |
| 9 | QUICK SYSTEMS | 28 | 0 | 6.62 | $3.75 |
| 10 | SOLAR UNIVERSE | 26 | 0 | 5.8 | $4.95 |
| 11 | GOT WATTS ELECTRIC | 25 | 0 | 9.3 | $3.58 |
| 12 | SEMPER SOLARIS | 24 | 1 | 6.87 | $4.18 |
Neighboring zips
The nearest zip markets
By distance between zip centroids
| Zip | Distance | Installs | $/W | Score |
|---|---|---|---|---|
| 94597 Walnut Creek | 2.1 km | 1,222 | $4.10 | 46 |
| 94598 Walnut Creek | 3.0 km | 2,819 | $4.29 | 50 |
| 94595 Walnut Creek | 3.6 km | 1,125 | $4.27 | 47 |
| 94549 Lafayette | 5.1 km | 3,232 | $4.31 | 51 |
| 94518 Concord | 5.6 km | 1,953 | $4.35 | 55 |
| 94523 Pleasant Hill | 5.7 km | 2,904 | $4.33 | 54 |
Same city
Other zips in Walnut Creek
Equipment
What gets installed in 94596
Share of systems with a recorded brand
Modules
SUNPOWER14.2%
QCELLS NORTH AMERICA10.4%
REC GROUP6.8%
LG ELECTRONICS6.0%
CSI SOLAR5.4%
Inverters
ENPHASE ENERGY32.9%
SOLAREDGE26.8%
SUNPOWER11.2%
TESLA7.4%
SMA AMERICA7.0%
Frequently asked
Quick answers about 94596
How many solar installations are there in 94596?
SolarDNA counts 1,320 active solar installations in Walnut Creek 94596, 1,291 of them residential, with data through April 23, 2026.
How much does solar cost in 94596?
The median residential system in 94596 cost $4.23 per watt over the trailing twelve months, $0.04/W below the California median.
Is solar growing in 94596?
Installations in 94596 are up 8.5%: 77 in the trailing twelve months versus 71 before.
Who installs solar in 94596?
TESLA, SUNRUN, DIABLO SOLAR SERVICES lead the 223 installers with systems in 94596. The full comp set is above.
Is 94596 a good market for solar sales?
94596 scores 47 out of 100 (Great, higher than 77% of U.S. zip markets).