Walnut Creek, CA 94597 solar market data
Updated May 7, 2026 By The SolarDNA Data Team
Walnut Creek 94597 has 1,222 solar installations at a median installed cost of $4.10/W, installations up 4.4% over the trailing twelve months, and a Market Score of 46 — higher than 73% of U.S. zip markets.
Versus California
How 94597 compares with the state
Installed cost
$0.17/W below
state median $4.26/W
Market score
46 vs 53
California scores 53
Share of state installs
0.05%
of 2.3M tracked statewide
Battery attach
10.5%
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: 109–133 installs (midpoint 121)
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
94597 by year
118 installs in the trailing twelve months vs 113 before
Installations by year
Median installed cost, $/W DC by year
Installer comp set
Who installs in 94597
Ranked by systems recorded in this zip
| # | Installer | Installs | 12-mo | Avg kW | $/W |
|---|---|---|---|---|---|
| 1 | TESLA | 178 | 8 | 10.22 | $5.12 |
| 2 | SUNRUN | 126 | 16 | 7.05 | $4.28 |
| 3 | CITADEL ROOFING AND SOLAR | 102 | 35 | 3.56 | $2.65 |
| 4 | SUNPOWER | 61 | 0 | 5.56 | $4.26 |
| 5 | PETERSENDEAN | 28 | 0 | 5.69 | $4.17 |
| 6 | GOT WATTS ELECTRIC | 25 | 0 | 7.98 | $3.83 |
| 7 | QUICK SYSTEMS | 25 | 0 | 5.53 | $3.75 |
| 8 | SEMPER SOLARIS | 25 | 0 | 7.41 | $4.83 |
| 9 | SOLAR TECHNOLOGIES | 25 | 0 | 6.47 | $4.63 |
| 10 | DIABLO SOLAR SERVICES | 22 | 0 | 6.89 | $4.61 |
| 11 | WEST COAST SOLAR | 20 | 0 | 6.32 | $3.75 |
| 12 | HOOKED ON SOLAR | 19 | 0 | 10.65 | $4.15 |
Neighboring zips
The nearest zip markets
By distance between zip centroids
| Zip | Distance | Installs | $/W | Score |
|---|---|---|---|---|
| 94596 Walnut Creek | 2.1 km | 1,320 | $4.23 | 47 |
| 94523 Pleasant Hill | 4.0 km | 2,904 | $4.33 | 54 |
| 94598 Walnut Creek | 4.0 km | 2,819 | $4.29 | 50 |
| 94549 Lafayette | 4.3 km | 3,232 | $4.31 | 51 |
| 94595 Walnut Creek | 4.8 km | 1,125 | $4.27 | 47 |
| 94518 Concord | 5.4 km | 1,953 | $4.35 | 55 |
Same city
Other zips in Walnut Creek
Equipment
What gets installed in 94597
Share of systems with a recorded brand
Modules
QCELLS NORTH AMERICA12.7%
SUNPOWER11.9%
JA SOLAR10.8%
LG ELECTRONICS6.6%
REC GROUP5.9%
Inverters
ENPHASE ENERGY36.8%
SOLAREDGE28.0%
SUNPOWER9.7%
TESLA7.4%
SMA AMERICA3.9%
Frequently asked
Quick answers about 94597
How many solar installations are there in 94597?
SolarDNA counts 1,222 active solar installations in Walnut Creek 94597, 1,210 of them residential, with data through May 7, 2026.
How much does solar cost in 94597?
The median residential system in 94597 cost $4.10 per watt over the trailing twelve months, $0.17/W below the California median.
Is solar growing in 94597?
Installations in 94597 are up 4.4%: 118 in the trailing twelve months versus 113 before.
Who installs solar in 94597?
TESLA, SUNRUN, CITADEL ROOFING AND SOLAR lead the 201 installers with systems in 94597. The full comp set is above.
Is 94597 a good market for solar sales?
94597 scores 46 out of 100 (Great, higher than 73% of U.S. zip markets).