Fairfield, CA solar installation & market data
Updated May 4, 2026 By The SolarDNA Data Team
Fairfield has 11,645 solar installations across 2 zip codes at a median installed cost of $4.44/W, installations down 8.6% over the trailing twelve months, and an installs-weighted Market Score of 46.
Active installations
11,645
Zip markets
2
Median cost
$4.44/W
12-mo growth
▼ 8.6%
Installers active
542
City Market Score
Great · installs-weighted across 2 zips
Best zip in Fairfield scores higher than 86% of U.S. zip markets.
Versus California
How Fairfield compares with the state
Installed cost
$0.17/W above
state median $4.26/W
Market score
46 vs 53
California scores 53
Share of state installs
0.52%
of 2.3M tracked statewide
Battery attach
10.2%
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: 622–760 installs (midpoint 691)
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
Fairfield by year
722 installs in the trailing twelve months vs 790 before
Installations by year
Median installed cost, $/W DC by year
Installer comp set
Who installs in Fairfield
Summed across every zip in the city
| # | Installer | Installs | 12-mo | Zips | $/W |
|---|---|---|---|---|---|
| 1 | SUNRUN | 2,024 | 164 | 2 | $4.45 |
| 2 | SUNPOWER | 1,491 | 2 | 2 | $4.50 |
| 3 | TESLA | 1,086 | 32 | 2 | $5.12 |
| 4 | AMBROSE SOLAR | 562 | 50 | 2 | $4.44 |
| 5 | CITADEL ROOFING AND SOLAR | 495 | 60 | 2 | $2.92 |
| 6 | BRIGHT OPS | 382 | 52 | 2 | $4.44 |
| 7 | V3 ELECTRIC | 354 | 12 | 2 | $4.07 |
| 8 | FREEDOM FOREVER | 311 | 41 | 2 | $4.81 |
| 9 | PETERSENDEAN | 301 | 0 | 2 | $4.03 |
| 10 | ESP CONTRACTING | 218 | 4 | 2 | $4.02 |
| 11 | NORTH VALLEY | 214 | 19 | 2 | $6.22 |
| 12 | FUTURE ENERGY SAVERS | 188 | 6 | 2 | $6.30 |
| 13 | SONRAY CONSTRUCTION | 128 | 0 | 2 | $3.80 |
| 14 | SEMPER SOLARIS | 107 | 4 | 2 | $4.15 |
| 15 | HIGH DEFINITION SOLAR | 107 | 0 | 2 | $8.10 |
| 16 | HOOKED ON SOLAR | 87 | 1 | 2 | $4.32 |
| 17 | WESTHAVEN POWER | 86 | 9 | 2 | $4.72 |
| 18 | SUNGEVITY | 79 | 0 | 2 | $3.54 |
| 19 | COMPLETE SOLAR | 75 | 20 | 2 | $4.62 |
| 20 | WESTHAVEN SOLAR | 72 | 0 | 2 | $4.16 |
| 21 | INFINITY ENERGY | 71 | 0 | 2 | $4.50 |
| 22 | RIGHT NOW AIR | 69 | 2 | 2 | $6.70 |
| 23 | NEXUS ENERGY SYSTEMS | 68 | 4 | 2 | $6.13 |
| 24 | MIRADOR CONSTRUCTION | 55 | 7 | 2 | $3.52 |
| 25 | SUNWORKS | 53 | 0 | 2 | $4.10 |