Castaic, CA solar installation & market data
Updated May 6, 2026 By The SolarDNA Data Team
Castaic has 2,575 solar installations across 2 zip codes at a median installed cost of $4.66/W, installations up 62.1% over the trailing twelve months, and an installs-weighted Market Score of 58.
Active installations
2,575
Zip markets
2
Median cost
$4.66/W
12-mo growth
▲ 62.1%
Installers active
311
City Market Score
Excellent · installs-weighted across 2 zips
Best zip in Castaic scores higher than 99% of U.S. zip markets.
Versus California
How Castaic compares with the state
Installed cost
$0.40/W above
state median $4.26/W
Market score
58 vs 53
California scores 53
Share of state installs
0.11%
of 2.3M tracked statewide
Battery attach
20.9%
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: 230–311 installs (midpoint 270)
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
Castaic by year
235 installs in the trailing twelve months vs 145 before
Installations by year
Median installed cost, $/W DC by year
Installer comp set
Who installs in Castaic
Summed across every zip in the city
| # | Installer | Installs | 12-mo | Zips | $/W |
|---|---|---|---|---|---|
| 1 | TESLA | 448 | 34 | 1 | $4.90 |
| 2 | SUNRUN | 347 | 57 | 1 | $4.34 |
| 3 | VERENGO | 156 | 0 | 2 | $5.38 |
| 4 | GREEN CONVERGENCE | 125 | 3 | 2 | $5.42 |
| 5 | SUNPOWER | 105 | 8 | 2 | $4.76 |
| 6 | AMERICAN SOLAR DIRECT | 69 | 0 | 1 | $5.90 |
| 7 | FREEDOM FOREVER | 60 | 12 | 1 | $3.94 |
| 8 | SUNERGY CONSTRUCTION | 52 | 0 | 1 | $3.13 |
| 9 | BRIGHT OPS | 49 | 15 | 1 | $3.83 |
| 10 | SUNGEVITY | 45 | 0 | 1 | $4.12 |
| 11 | PETERSENDEAN | 43 | 0 | 1 | $3.66 |
| 12 | SEMPER SOLARIS | 42 | 1 | 1 | $4.53 |
| 13 | ENERGY PLUS CA | 34 | 0 | 1 | $4.14 |
| 14 | COMPLETE SOLAR | 32 | 13 | 1 | $5.19 |
| 15 | SOLAR OPTIMUM DESIGN ELECTRIC | 28 | 0 | 1 | $2.81 |
| 16 | AP ELECTRIC | 28 | 0 | 1 | $4.24 |
| 17 | ADVANCED SOLAR ELECTRIC | 24 | 0 | 2 | $7.98 |
| 18 | LA SOLAR GROUP | 23 | 0 | 1 | $3.65 |
| 19 | BETTER EARTH | 23 | 0 | 1 | $4.77 |
| 20 | PACIFIC BLUE SOLAR | 21 | 0 | 1 | $4.32 |
| 21 | BRIGHT PLANET SOLAR | 20 | 0 | 1 | $4.26 |
| 22 | SOLCIUS | 20 | 0 | 1 | $1.46 |
| 23 | 360 SOLAR ENERGY | 18 | 0 | 1 | $5.41 |
| 24 | QUANTUM SOLAR DESIGNS | 17 | 0 | 1 | $4.46 |
| 25 | SOLARMAX | 15 | 0 | 1 | $3.41 |