Fullerton, CA solar installation & market data
Updated May 11, 2026 By The SolarDNA Data Team
Fullerton has 5,698 solar installations across 5 zip codes at a median installed cost of $4.15/W, installations up 17.5% over the trailing twelve months, and an installs-weighted Market Score of 52.
Active installations
5,698
Zip markets
5
Median cost
$4.15/W
12-mo growth
▲ 17.5%
Installers active
653
City Market Score
Excellent · installs-weighted across 5 zips
Best zip in Fullerton scores higher than 99% of U.S. zip markets.
Versus California
How Fullerton compares with the state
Installed cost
$0.11/W below
state median $4.26/W
Market score
52 vs 53
California scores 53
Share of state installs
0.25%
of 2.3M tracked statewide
Battery attach
19.5%
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: 401–490 installs (midpoint 445)
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
Fullerton by year
409 installs in the trailing twelve months vs 348 before
Installations by year
Median installed cost, $/W DC by year
Installer comp set
Who installs in Fullerton
Summed across every zip in the city
| # | Installer | Installs | 12-mo | Zips | $/W |
|---|---|---|---|---|---|
| 1 | TESLA | 726 | 27 | 4 | $5.03 |
| 2 | SUNRUN | 687 | 96 | 4 | $4.30 |
| 3 | FREEDOM FOREVER | 150 | 17 | 4 | $4.28 |
| 4 | SUNPOWER | 144 | 1 | 5 | $5.35 |
| 5 | BRIGHT OPS | 140 | 16 | 4 | $4.44 |
| 6 | PETERSENDEAN | 107 | 0 | 4 | $3.84 |
| 7 | SWSS ELECTRIC | 101 | 1 | 4 | $1.56 |
| 8 | VERENGO | 99 | 0 | 4 | $4.26 |
| 9 | SUNGEVITY | 96 | 0 | 4 | $3.59 |
| 10 | ORANGE COUNTY CONTRACTING SERVICES | 88 | 31 | 4 | $3.81 |
| 11 | ESP CONTRACTING | 86 | 0 | 4 | $4.42 |
| 12 | SOLARMAX | 84 | 0 | 4 | $3.26 |
| 13 | ELIONE ENERGY | 77 | 11 | 4 | $2.91 |
| 14 | SEMPER SOLARIS | 72 | 2 | 4 | $3.93 |
| 15 | CLEAN INITIATIVE | 61 | 0 | 4 | $4.34 |
| 16 | SOLAR360 BUILDING SERVICES | 53 | 0 | 4 | $3.65 |
| 17 | PEAK POWER SOLUTIONS | 52 | 0 | 4 | $8.25 |
| 18 | BETTER EARTH | 50 | 0 | 4 | $5.17 |
| 19 | SUNLUX ENERGY | 50 | 0 | 4 | $3.34 |
| 20 | SOLAR OPTIMUM DESIGN ELECTRIC | 49 | 0 | 4 | $3.06 |
| 21 | INFINITY ELECTRIC | 43 | 0 | 4 | $3.05 |
| 22 | KBC ENERGY GROUP | 42 | 8 | 4 | $3.13 |
| 23 | FORME SOLAR | 41 | 0 | 4 | $3.29 |
| 24 | ALTAIR SOLAR | 39 | 0 | 4 | $2.78 |
| 25 | AMECO SOLAR | 37 | 7 | 4 | $4.27 |