Westlake Village, CA solar installation & market data
Updated April 16, 2026 By The SolarDNA Data Team
Westlake Village has 1,225 solar installations across 2 zip codes at a median installed cost of $4.26/W, installations up 66.2% over the trailing twelve months, and an installs-weighted Market Score of 57.
Active installations
1,225
Zip markets
2
Median cost
$4.26/W
12-mo growth
▲ 66.2%
Installers active
287
City Market Score
Excellent · installs-weighted across 2 zips
Best zip in Westlake Village scores higher than 99% of U.S. zip markets.
Versus California
How Westlake Village compares with the state
Installed cost
$0.01/W below
state median $4.26/W
Market score
57 vs 53
California scores 53
Share of state installs
0.05%
of 2.3M tracked statewide
Battery attach
34.3%
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: 130–176 installs (midpoint 153)
Trailing-12-month installs carried forward at half the observed growth rate (capped at ±30%), with a ±15% band. Not a forecast of permits or policy.
Growth & pricing
Westlake Village by year
133 installs in the trailing twelve months vs 80 before
Installations by year
Median installed cost, $/W DC by year
Installer comp set
Who installs in Westlake Village
Summed across every zip in the city
| # | Installer | Installs | 12-mo | Zips | $/W |
|---|---|---|---|---|---|
| 1 | TESLA | 129 | 7 | 1 | $4.06 |
| 2 | SUNRUN | 123 | 17 | 1 | $4.02 |
| 3 | GREEN CONVERGENCE | 41 | 3 | 1 | $4.88 |
| 4 | SUNPOWER | 37 | 0 | 1 | $4.64 |
| 5 | VERENGO | 29 | 0 | 1 | $4.43 |
| 6 | SEMPER SOLARIS | 28 | 4 | 1 | $4.11 |
| 7 | REC SOLAR COMMERCIAL | 27 | 0 | 2 | $5.24 |
| 8 | REPOWER LIVERMORE | 26 | 0 | 1 | $4.77 |
| 9 | ADVANCED SOLAR ELECTRIC | 23 | 0 | 1 | $8.17 |
| 10 | FREEDOM FOREVER | 20 | 3 | 1 | $4.13 |
| 11 | SOUTHERN CALIFORNIA SOLAR ENERGY | 20 | 0 | 1 | $7.63 |
| 12 | SOLAR UNIVERSE | 19 | 0 | 1 | $3.82 |
| 13 | SHELTER ROOFING | 19 | 0 | 1 | $5.39 |
| 14 | SOLAR OPTIMUM DESIGN ELECTRIC | 19 | 0 | 1 | $3.05 |
| 15 | QUANTUM SOLAR DESIGNS | 17 | 1 | 1 | $3.88 |
| 16 | ORANGE COUNTY CONTRACTING SERVICES | 16 | 12 | 1 | $5.38 |
| 17 | KOTA CONSTRUCTION | 16 | 0 | 1 | $4.71 |
| 18 | LA SOLAR GROUP | 16 | 0 | 1 | $3.47 |
| 19 | AMERICAN SOLAR DIRECT | 15 | 0 | 1 | $5.79 |
| 20 | AP ELECTRIC | 12 | 0 | 1 | $2.81 |
| 21 | AUGUST ROOFING | 12 | 0 | 1 | $4.33 |
| 22 | AMECO SOLAR | 11 | 2 | 1 | $3.85 |
| 23 | CROWN SOLAR | 11 | 0 | 1 | $3.91 |
| 24 | ADR ELECTRIC | 9 | 0 | 1 | $4.86 |
| 25 | SWELL CONTRACTORS | 9 | 0 | 1 | $3.48 |