Fairfax, CA solar installation & market data
Updated May 1, 2026 By The SolarDNA Data Team
Fairfax has 597 solar installations across 2 zip codes at a median installed cost of $5.12/W, recent growth not yet measurable, and an installs-weighted Market Score of 37.
Active installations
597
Zip markets
2
Median cost
$5.12/W
12-mo growth
—
Installers active
129
City Market Score
Fair · installs-weighted across 2 zips
Best zip in Fairfax scores higher than 19% of U.S. zip markets.
Versus California
How Fairfax compares with the state
Installed cost
$0.86/W above
state median $4.26/W
Market score
37 vs 53
California scores 53
Share of state installs
0.03%
of 2.3M tracked statewide
Battery attach
21.8%
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
Growth & pricing
Fairfax by year
40 installs in the trailing twelve months vs 45 before
Installations by year
Median installed cost, $/W DC by year
Installer comp set
Who installs in Fairfax
Summed across every zip in the city
| # | Installer | Installs | 12-mo | Zips | $/W |
|---|---|---|---|---|---|
| 1 | TESLA | 86 | 2 | 1 | $5.11 |
| 2 | SOLARCRAFT SERVICES | 40 | 2 | 1 | $6.34 |
| 3 | SUNRUN | 33 | 2 | 1 | $4.44 |
| 4 | SUN FIRST | 30 | 3 | 2 | $5.58 |
| 5 | EARTHWISE ENERGY SOLUTIONS | 23 | 3 | 1 | $6.44 |
| 6 | ROCKIN ROOFERS | 21 | 2 | 1 | $4.69 |
| 7 | SUNPOWER | 19 | 0 | 1 | $5.37 |
| 8 | PAC SOLAR | 17 | 0 | 1 | $3.50 |
| 9 | SEMPER SOLARIS | 16 | 1 | 1 | $6.73 |
| 10 | SPG SOLAR | 16 | 0 | 1 | $7.31 |
| 11 | COOPERATIVE COMMUNITY ENERGY | 14 | 0 | 1 | $7.16 |
| 12 | BERT BARTSCH | 12 | 0 | 1 | $3.77 |
| 13 | SUNGEVITY | 10 | 0 | 1 | $4.49 |
| 14 | SWELL CONTRACTORS | 9 | 0 | 1 | $5.85 |
| 15 | QUATTRO SOLAR | 9 | 1 | 1 | $3.50 |
| 16 | RGS ENERGY | 8 | 0 | 1 | $7.09 |
| 17 | NORTHERN PACIFIC POWER | 8 | 0 | 1 | $4.16 |
| 18 | HIGH DEFINITION SOLAR | 8 | 0 | 1 | $6.55 |
| 19 | SONOMARIN SOLAR | 6 | 0 | 1 | $4.35 |
| 20 | COMPLETE SOLAR | 6 | 0 | 1 | $4.19 |
| 21 | CITADEL ROOFING AND SOLAR | 6 | 2 | 1 | $7.02 |
| 22 | ALL BAY SOLAR CONSTRUCTION | 6 | 0 | 1 | $4.44 |
| 23 | AMERICAN SOLAR DIRECT | 6 | 0 | 1 | $3.66 |
| 24 | LUMINALT ENERGY | 5 | 0 | 1 | $7.54 |
| 25 | SOLARCRAFT | 5 | 0 | 1 | $3.57 |