Solano County, CA solar installation & market data
Updated May 4, 2026 By The SolarDNA Data Team
Solano County has 44,278 solar installations across 16 zip codes at a median installed cost of $4.48/W, installations down 0.6% over the trailing twelve months, and an installs-weighted Market Score of 47.
Active installations
44,278
Zip markets
16
Median cost
$4.48/W
12-mo growth
▼ 0.6%
Installers active
963
County Market Score
Great · installs-weighted across 16 zips
Best zip in Solano County scores higher than 99% of U.S. zip markets.
Versus California
How Solano County compares with the state
Installed cost
$0.22/W above
state median $4.26/W
Market score
47 vs 53
California scores 53
Share of state installs
1.96%
of 2.3M tracked statewide
Battery attach
9.8%
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: 2,810–3,434 installs (midpoint 3,122)
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
Solano County by year
3,131 installs in the trailing twelve months vs 3,151 before
Installations by year
Median installed cost, $/W DC by year
Installer comp set
Who installs in Solano County
Summed across every zip in the county
| # | Installer | Installs | 12-mo | Zips | $/W |
|---|---|---|---|---|---|
| 1 | SUNRUN | 8,611 | 950 | 12 | $4.29 |
| 2 | TESLA | 4,859 | 102 | 14 | $5.05 |
| 3 | SUNPOWER | 3,922 | 91 | 12 | $4.54 |
| 4 | AMBROSE SOLAR | 2,556 | 217 | 12 | $4.42 |
| 5 | CITADEL ROOFING AND SOLAR | 1,536 | 295 | 12 | $2.93 |
| 6 | BRIGHT OPS | 1,457 | 249 | 12 | $4.59 |
| 7 | V3 ELECTRIC | 1,273 | 43 | 11 | $4.09 |
| 8 | FREEDOM FOREVER | 1,016 | 97 | 11 | $4.74 |
| 9 | PETERSENDEAN | 922 | 0 | 12 | $3.70 |
| 10 | FUTURE ENERGY SAVERS | 809 | 23 | 11 | $6.39 |
| 11 | NORTH VALLEY | 703 | 82 | 11 | $5.94 |
| 12 | ESP CONTRACTING | 588 | 10 | 11 | $4.10 |
| 13 | SONRAY CONSTRUCTION | 528 | 15 | 8 | $3.28 |
| 14 | SEMPER SOLARIS | 414 | 31 | 11 | $4.33 |
| 15 | SUNGEVITY | 354 | 0 | 11 | $3.79 |
| 16 | HOOKED ON SOLAR | 343 | 6 | 11 | $4.36 |
| 17 | HIGH DEFINITION SOLAR | 335 | 0 | 11 | $8.12 |
| 18 | WESTHAVEN SOLAR | 331 | 0 | 8 | $4.20 |
| 19 | RIGHT NOW AIR | 329 | 7 | 12 | $6.38 |
| 20 | INFINITY ENERGY | 281 | 0 | 11 | $4.30 |
| 21 | COMPLETE SOLAR | 256 | 42 | 11 | $4.57 |
| 22 | BETTER EARTH | 247 | 0 | 12 | $5.37 |
| 23 | NEXUS ENERGY SYSTEMS | 214 | 12 | 11 | $5.82 |
| 24 | WESTHAVEN POWER | 211 | 25 | 10 | $4.82 |
| 25 | EMPOWER ELECTRIC | 209 | 0 | 11 | $5.78 |
Zip markets
Zips in Solano County
Ranked by installations · click for the zip market
| Zip | Installs | $/W | Score |
|---|---|---|---|
| 95687 | 9,044 | $4.37 | 57 A |
| 94533 | 7,375 | $4.44 | 44 C |
| 95688 | 5,496 | $4.26 | 45 C |
| 94534 | 4,270 | $4.43 | 49 B |
| 95620 | 3,984 | $4.25 | 40 C |
| 94591 | 3,769 | $4.68 | 48 B |
| 94571 | 2,770 | $4.77 | 47 B |
| 94585 | 2,565 | $4.72 | 36 D |
| 94510 | 2,198 | $4.51 | 53 A |
| 94589 | 1,463 | $5.10 | 41 C |
| 94590 | 1,190 | $5.03 | 47 B |
| 94535 | 124 | $4.10 | 40 C |
| 95625 | 21 | $4.17 | 39 C |
| 94512 | 4 | $3.73 | 41 C |
| 95696 | 4 | $3.92 | 40 C |
| 94592 | 1 | $8.00 | 28 F |