El Monte, CA 91731 solar market data
Updated April 21, 2026Provisional score · under 500 installs By The SolarDNA Data Team
El Monte 91731 has 405 solar installations at a median installed cost of $4.27/W, installations up 7.9% over the trailing twelve months, and a Market Score of 42 — higher than 53% of U.S. zip markets.
Versus California
How 91731 compares with the state
Installed cost
$0.00/W above
state median $4.26/W
Market score
42 vs 53
California scores 53
Share of state installs
0.02%
of 2.3M tracked statewide
Battery attach
18.8%
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: 64–78 installs (midpoint 71)
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
91731 by year
68 installs in the trailing twelve months vs 63 before
Installations by year
Median installed cost, $/W DC by year
Installer comp set
Who installs in 91731
Ranked by systems recorded in this zip
| # | Installer | Installs | 12-mo | Avg kW | $/W |
|---|---|---|---|---|---|
| 1 | SUNRUN | 35 | 9 | 5.04 | $3.90 |
| 2 | COMPLETE SOLAR | 31 | 12 | 3.35 | $4.72 |
| 3 | TESLA | 29 | 3 | 6.34 | $5.12 |
| 4 | SUNPOWER | 18 | 6 | 14.78 | $4.43 |
| 5 | V3 ELECTRIC | 16 | 13 | 4.73 | — |
| 6 | SWSS ELECTRIC | 16 | 1 | 6.97 | $2.77 |
| 7 | ESP CONTRACTING | 15 | 0 | 5.75 | $4.16 |
| 8 | FREEDOM FOREVER | 11 | 2 | 7.15 | $5.37 |
| 9 | TRUEPOWER SOLAR | 8 | 0 | 44.95 | $3.20 |
| 10 | PROMISE ENERGY | 7 | 0 | 9.33 | $3.86 |
| 11 | SOLAR OPTIMUM DESIGN ELECTRIC | 7 | 0 | 6.78 | $2.85 |
| 12 | SOUTH WEST BUILDERS | 6 | 3 | 6.79 | $6.00 |
Neighboring zips
The nearest zip markets
By distance between zip centroids
| Zip | Distance | Installs | $/W | Score |
|---|---|---|---|---|
| 91732 El Monte | 2.3 km | 787 | $4.38 | 54 |
| 91733 South El Monte | 2.7 km | 833 | $4.17 | 55 |
| 91780 Temple City | 2.9 km | 1,267 | $4.00 | 58 |
| 91770 Rosemead | 4.7 km | 1,270 | $4.00 | 47 |
| 91007 Arcadia | 5.2 km | 1,224 | $4.04 | 47 |
| 91776 San Gabriel | 5.5 km | 670 | $4.03 | 46 |
Same city
Other zips in El Monte
Equipment
What gets installed in 91731
Share of systems with a recorded brand
Modules
QCELLS NORTH AMERICA33.1%
SUNPOWER8.5%
CSI SOLAR8.0%
REC GROUP4.0%
KYOCERA SOLAR3.7%
Inverters
ENPHASE ENERGY44.4%
SOLAREDGE27.3%
ABB5.3%
SUNPOWER4.8%
SMA AMERICA4.3%
Frequently asked
Quick answers about 91731
How many solar installations are there in 91731?
SolarDNA counts 405 active solar installations in El Monte 91731, 372 of them residential, with data through April 21, 2026.
How much does solar cost in 91731?
The median residential system in 91731 cost $4.27 per watt over the trailing twelve months, $0.00/W above the California median.
Is solar growing in 91731?
Installations in 91731 are up 7.9%: 68 in the trailing twelve months versus 63 before.
Who installs solar in 91731?
SUNRUN, COMPLETE SOLAR, TESLA lead the 147 installers with systems in 91731. The full comp set is above.
Is 91731 a good market for solar sales?
91731 scores 42 out of 100 (Good, higher than 53% of U.S. zip markets). With under 500 installations the score is provisional.