Lake Forest, CA solar installation & market data
Updated March 31, 2026 By The SolarDNA Data Team
Lake Forest has 4,639 solar installations across 1 zip code at a median installed cost of $4.25/W, installations up 11.7% over the trailing twelve months, and an installs-weighted Market Score of 51.
Active installations
4,639
Zip markets
1
Median cost
$4.25/W
12-mo growth
▲ 11.7%
Installers active
12
City Market Score
Excellent · installs-weighted across 1 zips
Best zip in Lake Forest scores higher than 93% of U.S. zip markets.
Versus California
How Lake Forest compares with the state
Installed cost
$0.01/W below
state median $4.26/W
Market score
51 vs 53
California scores 53
Share of state installs
0.21%
of 2.3M tracked statewide
Battery attach
16.1%
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: 281–343 installs (midpoint 312)
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
Lake Forest by year
295 installs in the trailing twelve months vs 264 before
Installations by year
Median installed cost, $/W DC by year
Installer comp set
Who installs in Lake Forest
Summed across every zip in the city
| # | Installer | Installs | 12-mo | Zips | $/W |
|---|---|---|---|---|---|
| 1 | SUNRUN | 813 | 119 | 1 | $4.13 |
| 2 | SUNPOWER | 784 | 2 | 1 | $4.25 |
| 3 | TESLA | 731 | 34 | 1 | $4.97 |
| 4 | SUNNOVA ENERGY | 119 | 0 | 1 | $3.80 |
| 5 | SUNSTREET ENERGY GROUP | 116 | 0 | 1 | $3.80 |
| 6 | FREEDOM FOREVER | 79 | 16 | 1 | $4.58 |
| 7 | ORANGE COUNTY CONTRACTING SERVICES | 77 | 26 | 1 | $3.30 |
| 8 | BRIGHT OPS | 54 | 5 | 1 | $4.24 |
| 9 | SEMPER SOLARIS | 49 | 1 | 1 | $3.84 |
| 10 | SOLARMAX | 49 | 0 | 1 | $3.16 |
| 11 | SUNGEVITY | 46 | 0 | 1 | $4.04 |
| 12 | SOLAR OPTIMUM DESIGN ELECTRIC | 44 | 0 | 1 | $2.98 |
Zip markets
Zips in Lake Forest
Ranked by installations · click for the zip market
| Zip | Installs | $/W | Score |
|---|---|---|---|
| 92630 | 4,639 | $4.25 | 51 A |