Castaic, CA 91384 solar market data
Updated May 6, 2026 By The SolarDNA Data Team
Castaic 91384 has 2,504 solar installations at a median installed cost of $4.67/W, installations up 60.7% over the trailing twelve months, and a Market Score of 59 — higher than 99% of U.S. zip markets.
Zip Market Score
Excellent · higher than 99% of zips
Versus California
How 91384 compares with the state
Installed cost
$0.40/W above
state median $4.26/W
Market score
59 vs 53
California scores 53
Share of state installs
0.11%
of 2.3M tracked statewide
Battery attach
21.3%
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: 228–308 installs (midpoint 268)
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
91384 by year
233 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 91384
Ranked by systems recorded in this zip
| # | Installer | Installs | 12-mo | Avg kW | $/W |
|---|---|---|---|---|---|
| 1 | TESLA | 448 | 34 | 6.82 | $4.90 |
| 2 | SUNRUN | 347 | 57 | 7.91 | $4.34 |
| 3 | VERENGO | 154 | 0 | 5.68 | $5.37 |
| 4 | GREEN CONVERGENCE | 124 | 2 | 7.64 | $5.41 |
| 5 | AMERICAN SOLAR DIRECT | 69 | 0 | 5.31 | $5.90 |
| 6 | FREEDOM FOREVER | 60 | 12 | 8.55 | $3.94 |
| 7 | SUNERGY CONSTRUCTION | 52 | 0 | 7.76 | $3.13 |
| 8 | SUNPOWER | 50 | 8 | 6.84 | $5.04 |
| 9 | BRIGHT OPS | 49 | 15 | 8.6 | $3.83 |
| 10 | SUNGEVITY | 45 | 0 | 6.53 | $4.12 |
| 11 | PETERSENDEAN | 43 | 0 | 7.92 | $3.66 |
| 12 | SEMPER SOLARIS | 42 | 1 | 7.93 | $4.53 |
Neighboring zips
The nearest zip markets
By distance between zip centroids
| Zip | Distance | Installs | $/W | Score |
|---|---|---|---|---|
| 91310 Castaic | 0.7 km | 71 | $4.50 | 38 |
| 91354 Valencia | 9.0 km | 4,064 | $4.35 | 47 |
| 91390 Santa Clarita | 9.2 km | 2,222 | $4.51 | 53 |
| 91355 Valencia | 11.5 km | 1,932 | $4.25 | 56 |
| 91381 Stevenson Ranch | 11.8 km | 3,298 | $4.01 | 41 |
| 91350 Santa Clarita | 12.7 km | 5,679 | $4.33 | 49 |
Same city
Other zips in Castaic
Equipment
What gets installed in 91384
Share of systems with a recorded brand
Modules
QCELLS NORTH AMERICA18.0%
SUNPOWER11.7%
TESLA8.1%
LONGI GREEN ENERGY TECHNOLOGY5.7%
LG ELECTRONICS5.3%
Inverters
SOLAREDGE27.9%
ENPHASE ENERGY25.9%
TESLA9.7%
POWER-ONE8.1%
SUNPOWER7.6%
Frequently asked
Quick answers about 91384
How many solar installations are there in 91384?
SolarDNA counts 2,504 active solar installations in Castaic 91384, 2,496 of them residential, with data through May 6, 2026.
How much does solar cost in 91384?
The median residential system in 91384 cost $4.67 per watt over the trailing twelve months, $0.40/W above the California median.
Is solar growing in 91384?
Installations in 91384 are up 60.7%: 233 in the trailing twelve months versus 145 before.
Who installs solar in 91384?
TESLA, SUNRUN, VERENGO lead the 308 installers with systems in 91384. The full comp set is above.
Is 91384 a good market for solar sales?
91384 scores 59 out of 100 (Excellent, higher than 99% of U.S. zip markets).