Alhambra, CA 91803 solar market data
Updated May 18, 2026 By The SolarDNA Data Team
Alhambra 91803 has 557 solar installations at a median installed cost of $4.25/W, recent growth not yet measurable, and a Market Score of 41 — higher than 42% of U.S. zip markets.
Versus California
How 91803 compares with the state
Installed cost
$0.01/W below
state median $4.26/W
Market score
41 vs 53
California scores 53
Share of state installs
0.02%
of 2.3M tracked statewide
Battery attach
20.8%
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
Growth & pricing
91803 by year
49 installs in the trailing twelve months vs 42 before
Installations by year
Median installed cost, $/W DC by year
Installer comp set
Who installs in 91803
Ranked by systems recorded in this zip
| # | Installer | Installs | 12-mo | Avg kW | $/W |
|---|---|---|---|---|---|
| 1 | TESLA | 74 | 5 | 5.81 | $5.12 |
| 2 | SUNPOWER | 67 | 0 | 14.97 | $4.50 |
| 3 | SUNRUN | 61 | 7 | 6.07 | $4.24 |
| 4 | SOLAR OPTIMUM DESIGN ELECTRIC | 20 | 0 | 7.87 | $2.89 |
| 5 | SWSS ELECTRIC | 11 | 0 | 5.98 | $3.29 |
| 6 | FREEDOM FOREVER | 10 | 1 | 6.32 | $3.96 |
| 7 | SEMPER SOLARIS | 10 | 0 | 5.9 | $4.79 |
| 8 | SOLARMAX | 8 | 0 | 7.67 | $3.41 |
| 9 | VERENGO | 8 | 0 | 4.69 | $4.69 |
| 10 | SOUTH WEST BUILDERS | 6 | 0 | 4.77 | $7.65 |
| 11 | AMECO SOLAR | 5 | 1 | 7.24 | $4.16 |
| 12 | KAAR ELECTRIC | 5 | 1 | 6.67 | $3.74 |
Neighboring zips
The nearest zip markets
By distance between zip centroids
| Zip | Distance | Installs | $/W | Score |
|---|---|---|---|---|
| 91801 Alhambra | 2.3 km | 751 | $4.31 | 40 |
| 91754 Monterey Park | 2.8 km | 836 | $4.15 | 47 |
| 90032 Los Angeles | 3.0 km | 272 | $5.08 | 36 |
| 91755 Monterey Park | 3.9 km | 638 | $3.82 | 48 |
| 91030 South Pasadena | 4.2 km | 978 | $4.25 | 56 |
| 91776 San Gabriel | 4.7 km | 670 | $4.03 | 46 |
Same city
Other zips in Alhambra
Equipment
What gets installed in 91803
Share of systems with a recorded brand
Modules
QCELLS NORTH AMERICA16.7%
SUNPOWER15.6%
REC GROUP6.2%
CSI SOLAR4.8%
LG ELECTRONICS4.6%
Inverters
ENPHASE ENERGY35.1%
SOLAREDGE27.6%
SUNPOWER12.8%
TESLA6.1%
ABB5.0%
Frequently asked
Quick answers about 91803
How many solar installations are there in 91803?
SolarDNA counts 557 active solar installations in Alhambra 91803, 534 of them residential, with data through May 18, 2026.
How much does solar cost in 91803?
The median residential system in 91803 cost $4.25 per watt over the trailing twelve months, $0.01/W below the California median.
Is solar growing in 91803?
Recent growth cannot be measured yet for 91803: too few recent installs (data runs through May 18, 2026).
Who installs solar in 91803?
TESLA, SUNPOWER, SUNRUN lead the 176 installers with systems in 91803. The full comp set is above.
Is 91803 a good market for solar sales?
91803 scores 41 out of 100 (Good, higher than 42% of U.S. zip markets).