Downey, CA solar installation & market data
Updated May 20, 2026 By The SolarDNA Data Team
Downey has 2,901 solar installations across 3 zip codes at a median installed cost of $4.30/W, installations up 28.5% over the trailing twelve months, and an installs-weighted Market Score of 49.
Active installations
2,901
Zip markets
3
Median cost
$4.30/W
12-mo growth
▲ 28.5%
Installers active
451
City Market Score
Great · installs-weighted across 3 zips
Best zip in Downey scores higher than 99% of U.S. zip markets.
Versus California
How Downey compares with the state
Installed cost
$0.03/W above
state median $4.26/W
Market score
49 vs 53
California scores 53
Share of state installs
0.13%
of 2.3M tracked statewide
Battery attach
20.0%
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: 243–323 installs (midpoint 283)
Trailing-12-month installs carried forward at half the observed growth rate (capped at ±30%), with a ±14% band. Not a forecast of permits or policy.
Growth & pricing
Downey by year
248 installs in the trailing twelve months vs 193 before
Installations by year
Median installed cost, $/W DC by year
Installer comp set
Who installs in Downey
Summed across every zip in the city
| # | Installer | Installs | 12-mo | Zips | $/W |
|---|---|---|---|---|---|
| 1 | SUNRUN | 433 | 59 | 3 | $4.29 |
| 2 | TESLA | 346 | 11 | 3 | $5.03 |
| 3 | PGS SOLAR AND SMART HOMES | 92 | 0 | 3 | $3.94 |
| 4 | FREEDOM FOREVER | 90 | 13 | 3 | $4.30 |
| 5 | SUNPOWER | 89 | 0 | 3 | $4.05 |
| 6 | VERENGO | 76 | 0 | 3 | $4.04 |
| 7 | SKYLINE SMART ENERGY | 70 | 23 | 3 | $5.57 |
| 8 | ESP CONTRACTING | 60 | 0 | 3 | $4.88 |
| 9 | BRIGHT OPS | 50 | 11 | 3 | $4.45 |
| 10 | PETERSENDEAN | 44 | 0 | 3 | $3.82 |
| 11 | TITANIUM SOLAR | 41 | 0 | 3 | $5.87 |
| 12 | SUNGEVITY | 35 | 0 | 3 | $4.08 |
| 13 | SEMPER SOLARIS | 34 | 3 | 3 | $4.33 |
| 14 | BETTER EARTH | 33 | 0 | 3 | $5.41 |
| 15 | SOUTH WEST BUILDERS | 32 | 15 | 3 | $7.44 |
| 16 | SOLARMAX | 30 | 0 | 3 | $3.51 |
| 17 | ZERO ENERGY ASSOCIATES | 28 | 0 | 3 | $9.44 |
| 18 | POWUR | 27 | 0 | 3 | $4.14 |
| 19 | SWSS ELECTRIC | 27 | 1 | 3 | $1.61 |
| 20 | ZERO ENERGY CONTRACTING | 26 | 0 | 3 | $5.82 |
| 21 | AMECO SOLAR | 26 | 3 | 3 | $4.07 |
| 22 | COMPLETE SOLAR | 23 | 0 | 3 | $3.78 |
| 23 | EVOLUTION ENERGY | 19 | 0 | 3 | $3.69 |
| 24 | SUNERGY CONSTRUCTION | 18 | 0 | 3 | $3.04 |
| 25 | SOLAR OPTIMUM DESIGN ELECTRIC | 18 | 0 | 3 | $2.91 |