Whittier, CA 90604 solar market data
Updated May 4, 2026 By The SolarDNA Data Team
Whittier 90604 has 1,444 solar installations at a median installed cost of $4.68/W, installations up 11.2% over the trailing twelve months, and a Market Score of 46 — higher than 74% of U.S. zip markets.
Versus California
How 90604 compares with the state
Installed cost
$0.41/W above
state median $4.26/W
Market score
46 vs 53
California scores 53
Share of state installs
0.06%
of 2.3M tracked statewide
Battery attach
19.7%
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: 113–139 installs (midpoint 126)
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
90604 by year
119 installs in the trailing twelve months vs 107 before
Installations by year
Median installed cost, $/W DC by year
Installer comp set
Who installs in 90604
Ranked by systems recorded in this zip
| # | Installer | Installs | 12-mo | Avg kW | $/W |
|---|---|---|---|---|---|
| 1 | SUNRUN | 231 | 16 | 6.83 | $4.34 |
| 2 | TESLA | 191 | 7 | 5.96 | $5.12 |
| 3 | FREEDOM FOREVER | 73 | 6 | 6.56 | $4.33 |
| 4 | BRIGHT OPS | 43 | 19 | 6.63 | $4.44 |
| 5 | SUNPOWER | 43 | 0 | 6.56 | $4.87 |
| 6 | SKYLINE SMART ENERGY | 39 | 4 | 8.06 | $5.87 |
| 7 | ESP CONTRACTING | 36 | 0 | 6.48 | $4.39 |
| 8 | BETTER EARTH | 30 | 0 | 7.65 | $5.30 |
| 9 | SUNGEVITY | 29 | 0 | 6.44 | $3.62 |
| 10 | COMPLETE SOLAR | 26 | 1 | 5.62 | $4.68 |
| 11 | VERENGO | 22 | 0 | 5.65 | $4.34 |
| 12 | SEMPER SOLARIS | 21 | 1 | 6.95 | $4.30 |
Neighboring zips
The nearest zip markets
By distance between zip centroids
| Zip | Distance | Installs | $/W | Score |
|---|---|---|---|---|
| 90603 Whittier | 2.3 km | 1,019 | $4.41 | 50 |
| 90605 Whittier | 2.5 km | 1,249 | $4.63 | 47 |
| 90638 La Mirada | 2.6 km | 2,094 | $4.43 | 59 |
| 90602 Whittier | 4.8 km | 914 | $4.25 | 43 |
| 90631 La Habra | 5.8 km | 2,833 | $4.25 | 51 |
| 90633 La Habra | 6.2 km | 37 | $4.50 | 37 |
Same city
Other zips in Whittier
Equipment
What gets installed in 90604
Share of systems with a recorded brand
Modules
QCELLS NORTH AMERICA21.3%
CSI SOLAR8.7%
LONGI GREEN ENERGY TECHNOLOGY6.8%
SUNPOWER5.9%
KYOCERA SOLAR5.4%
Inverters
SOLAREDGE40.5%
ENPHASE ENERGY34.0%
ABB6.0%
TESLA5.1%
SUNPOWER3.7%
Frequently asked
Quick answers about 90604
How many solar installations are there in 90604?
SolarDNA counts 1,444 active solar installations in Whittier 90604, 1,440 of them residential, with data through May 4, 2026.
How much does solar cost in 90604?
The median residential system in 90604 cost $4.68 per watt over the trailing twelve months, $0.41/W above the California median.
Is solar growing in 90604?
Installations in 90604 are up 11.2%: 119 in the trailing twelve months versus 107 before.
Who installs solar in 90604?
SUNRUN, TESLA, FREEDOM FOREVER lead the 277 installers with systems in 90604. The full comp set is above.
Is 90604 a good market for solar sales?
90604 scores 46 out of 100 (Great, higher than 74% of U.S. zip markets).