Rowland Heights, CA 91748 solar market data
Updated May 18, 2026 By The SolarDNA Data Team
Rowland Heights 91748 has 1,783 solar installations at a median installed cost of $4.35/W, installations down 7.3% over the trailing twelve months, and a Market Score of 45 — higher than 68% of U.S. zip markets.
Versus California
How 91748 compares with the state
Installed cost
$0.08/W above
state median $4.26/W
Market score
45 vs 53
California scores 53
Share of state installs
0.08%
of 2.3M tracked statewide
Battery attach
18.7%
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: 110–134 installs (midpoint 122)
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
91748 by year
127 installs in the trailing twelve months vs 137 before
Installations by year
Median installed cost, $/W DC by year
Installer comp set
Who installs in 91748
Ranked by systems recorded in this zip
| # | Installer | Installs | 12-mo | Avg kW | $/W |
|---|---|---|---|---|---|
| 1 | TESLA | 388 | 17 | 6.32 | $5.12 |
| 2 | SUNRUN | 235 | 34 | 7.34 | $3.92 |
| 3 | SOLARMAX | 60 | 0 | 13.11 | $3.40 |
| 4 | SUNPOWER | 60 | 0 | 14.25 | $4.82 |
| 5 | FREEDOM FOREVER | 49 | 3 | 7.76 | $4.22 |
| 6 | BURKE ELECTRIC | 41 | 0 | 6.49 | $5.00 |
| 7 | TRUE POWER SOLAR | 36 | 0 | 9.03 | $4.99 |
| 8 | SOLAR OPTIMUM DESIGN ELECTRIC | 32 | 0 | 16.61 | $2.81 |
| 9 | SOLAR VAST | 32 | 0 | 11.55 | $3.82 |
| 10 | TRUEPOWER SOLAR | 25 | 0 | 9.25 | $4.30 |
| 11 | ELITE ELECTRIC | 23 | 0 | 6.68 | $5.50 |
| 12 | SWSS ELECTRIC | 21 | 0 | 5.97 | $3.57 |
Equipment
What gets installed in 91748
Share of systems with a recorded brand
Modules
QCELLS NORTH AMERICA17.2%
SUNPOWER14.0%
KYOCERA SOLAR10.9%
CSI SOLAR5.3%
LONGI GREEN ENERGY TECHNOLOGY5.0%
Inverters
SOLAREDGE26.5%
ENPHASE ENERGY24.9%
ABB12.6%
SUNPOWER8.9%
TESLA7.0%
Frequently asked
Quick answers about 91748
How many solar installations are there in 91748?
SolarDNA counts 1,783 active solar installations in Rowland Heights 91748, 1,727 of them residential, with data through May 18, 2026.
How much does solar cost in 91748?
The median residential system in 91748 cost $4.35 per watt over the trailing twelve months, $0.08/W above the California median.
Is solar growing in 91748?
Installations in 91748 are down 7.3%: 127 in the trailing twelve months versus 137 before.
Who installs solar in 91748?
TESLA, SUNRUN, SOLARMAX lead the 313 installers with systems in 91748. The full comp set is above.
Is 91748 a good market for solar sales?
91748 scores 45 out of 100 (Good, higher than 68% of U.S. zip markets).