Vacaville, CA solar installation & market data
Updated April 27, 2026 By The SolarDNA Data Team
Vacaville has 14,544 solar installations across 3 zip codes at a median installed cost of $4.33/W, installations up 21.0% over the trailing twelve months, and an installs-weighted Market Score of 53.
Active installations
14,544
Zip markets
3
Median cost
$4.33/W
12-mo growth
▲ 21.0%
Installers active
552
City Market Score
Excellent · installs-weighted across 3 zips
Best zip in Vacaville scores higher than 99% of U.S. zip markets.
Versus California
How Vacaville compares with the state
Installed cost
$0.06/W above
state median $4.26/W
Market score
53 vs 53
California scores 53
Share of state installs
0.64%
of 2.3M tracked statewide
Battery attach
8.3%
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: 1,059–1,307 installs (midpoint 1,183)
Trailing-12-month installs carried forward at half the observed growth rate (capped at ±30%), with a ±11% band. Not a forecast of permits or policy.
Growth & pricing
Vacaville by year
1,071 installs in the trailing twelve months vs 885 before
Installations by year
Median installed cost, $/W DC by year
Installer comp set
Who installs in Vacaville
Summed across every zip in the city
| # | Installer | Installs | 12-mo | Zips | $/W |
|---|---|---|---|---|---|
| 1 | SUNRUN | 2,927 | 370 | 2 | $4.22 |
| 2 | SUNPOWER | 1,526 | 86 | 3 | $4.53 |
| 3 | AMBROSE SOLAR | 1,487 | 122 | 2 | $4.35 |
| 4 | TESLA | 893 | 25 | 2 | $5.12 |
| 5 | V3 ELECTRIC | 430 | 9 | 2 | $4.06 |
| 6 | CITADEL ROOFING AND SOLAR | 426 | 88 | 2 | $3.00 |
| 7 | BRIGHT OPS | 419 | 37 | 2 | $4.28 |
| 8 | FUTURE ENERGY SAVERS | 391 | 12 | 2 | $6.41 |
| 9 | PETERSENDEAN | 270 | 0 | 3 | $3.65 |
| 10 | WESTHAVEN SOLAR | 217 | 0 | 2 | $4.21 |
| 11 | FREEDOM FOREVER | 217 | 20 | 2 | $4.42 |
| 12 | RIGHT NOW AIR | 208 | 3 | 2 | $5.97 |
| 13 | NORTH VALLEY | 134 | 11 | 2 | $6.10 |
| 14 | HOOKED ON SOLAR | 128 | 3 | 2 | $4.33 |
| 15 | ESP CONTRACTING | 127 | 1 | 2 | $4.04 |
| 16 | BRIGHT PLANET SOLAR | 125 | 0 | 2 | $3.98 |
| 17 | SUNGEVITY | 106 | 0 | 2 | $3.65 |
| 18 | INFINITY ENERGY | 100 | 0 | 2 | $3.91 |
| 19 | SEMPER SOLARIS | 99 | 6 | 2 | $4.20 |
| 20 | SUNWORKS | 92 | 0 | 2 | $4.05 |
| 21 | COMPLETE SOLAR | 86 | 19 | 2 | $4.49 |
| 22 | ELEMENT ELECTRIC | 83 | 4 | 2 | $3.38 |
| 23 | WESTHAVEN POWER | 80 | 13 | 2 | $4.75 |
| 24 | EMPOWER ELECTRIC | 74 | 0 | 2 | $5.01 |
| 25 | SOLARCO | 73 | 0 | 2 | $4.86 |