Rohnert Park, CA 94928 solar market data
Updated April 24, 2026 By The SolarDNA Data Team
Rohnert Park 94928 has 2,764 solar installations at a median installed cost of $4.37/W, installations down 18.0% over the trailing twelve months, and a Market Score of 43 — higher than 58% of U.S. zip markets.
Versus California
How 94928 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
0.12%
of 2.3M tracked statewide
Battery attach
9.2%
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: 164–200 installs (midpoint 182)
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
94928 by year
200 installs in the trailing twelve months vs 244 before
Installations by year
Median installed cost, $/W DC by year
Installer comp set
Who installs in 94928
Ranked by systems recorded in this zip
| # | Installer | Installs | 12-mo | Avg kW | $/W |
|---|---|---|---|---|---|
| 1 | SUNRUN | 825 | 72 | 5.25 | $3.65 |
| 2 | CITADEL ROOFING AND SOLAR | 236 | 4 | 5.4 | $2.94 |
| 3 | TESLA | 217 | 6 | 6.91 | $5.12 |
| 4 | SUNPOWER | 188 | 0 | 4.02 | $4.50 |
| 5 | BRIGHT OPS | 71 | 19 | 5.92 | $4.87 |
| 6 | BETTER EARTH | 64 | 0 | 7.37 | $5.02 |
| 7 | FREEDOM FOREVER | 61 | 2 | 5.81 | $5.41 |
| 8 | NORTHERN PACIFIC POWER | 58 | 0 | 6.13 | $3.96 |
| 9 | SOLARCRAFT SERVICES | 43 | 3 | 9.29 | $5.43 |
| 10 | ROCKIN ROOFERS | 40 | 0 | 5.19 | $4.51 |
| 11 | WESTCOAST SOLAR ENERGY | 37 | 1 | 8.67 | $4.15 |
| 12 | SUMMIT TECHNOLOGY GROUP | 32 | 32 | 2.97 | $3.80 |
Neighboring zips
The nearest zip markets
By distance between zip centroids
| Zip | Distance | Installs | $/W | Score |
|---|---|---|---|---|
| 94926 Rohnert Park | 1.0 km | 9 | $6.87 | 28 |
| 94931 Cotati | 2.5 km | 545 | $4.64 | 39 |
| 94951 Penngrove | 5.3 km | 488 | $4.39 | 40 |
| 95407 Santa Rosa | 7.7 km | 1,790 | $4.98 | 37 |
| 95405 Santa Rosa | 10.4 km | 1,641 | $4.44 | 48 |
| 95404 Santa Rosa | 10.5 km | 3,920 | $4.65 | 44 |
Same city
Other zips in Rohnert Park
Equipment
What gets installed in 94928
Share of systems with a recorded brand
Modules
LONGI GREEN ENERGY TECHNOLOGY14.5%
QCELLS NORTH AMERICA12.3%
JA SOLAR11.4%
LG ELECTRONICS9.6%
SUNPOWER8.3%
Inverters
SOLAREDGE39.4%
ENPHASE ENERGY32.1%
SUNPOWER7.8%
TESLA3.9%
FRONIUS USA3.5%
Frequently asked
Quick answers about 94928
How many solar installations are there in 94928?
SolarDNA counts 2,764 active solar installations in Rohnert Park 94928, 2,692 of them residential, with data through April 24, 2026.
How much does solar cost in 94928?
The median residential system in 94928 cost $4.37 per watt over the trailing twelve months, $0.11/W above the California median.
Is solar growing in 94928?
Installations in 94928 are down 18.0%: 200 in the trailing twelve months versus 244 before.
Who installs solar in 94928?
SUNRUN, CITADEL ROOFING AND SOLAR, TESLA lead the 229 installers with systems in 94928. The full comp set is above.
Is 94928 a good market for solar sales?
94928 scores 43 out of 100 (Good, higher than 58% of U.S. zip markets).