Rancho Cucamonga, CA 91737 solar market data
Updated May 7, 2026 By The SolarDNA Data Team
Rancho Cucamonga 91737 has 1,916 solar installations at a median installed cost of $4.07/W, installations up 64.1% over the trailing twelve months, and a Market Score of 61 — higher than 99% of U.S. zip markets.
Zip Market Score
Excellent · higher than 99% of zips
Versus California
How 91737 compares with the state
Installed cost
$0.20/W below
state median $4.26/W
Market score
61 vs 53
California scores 53
Share of state installs
0.08%
of 2.3M tracked statewide
Battery attach
20.1%
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: 125–169 installs (midpoint 147)
Trailing-12-month installs carried forward at half the observed growth rate (capped at ±30%), with a ±15% band. Not a forecast of permits or policy.
Growth & pricing
91737 by year
128 installs in the trailing twelve months vs 78 before
Installations by year
Median installed cost, $/W DC by year
Installer comp set
Who installs in 91737
Ranked by systems recorded in this zip
| # | Installer | Installs | 12-mo | Avg kW | $/W |
|---|---|---|---|---|---|
| 1 | TESLA | 263 | 16 | 9.22 | $4.84 |
| 2 | SUNRUN | 189 | 25 | 9.73 | $3.90 |
| 3 | SUNPOWER | 64 | 0 | 9.51 | $4.27 |
| 4 | SOLARMAX | 63 | 0 | 8.41 | $3.48 |
| 5 | BRIGHT OPS | 59 | 2 | 8.86 | $4.20 |
| 6 | FREEDOM FOREVER | 48 | 6 | 9.64 | $3.94 |
| 7 | SUNGEVITY | 47 | 0 | 8.25 | $4.20 |
| 8 | SEMPER SOLARIS | 33 | 3 | 9.14 | $4.25 |
| 9 | POWUR | 24 | 0 | 12.62 | $3.77 |
| 10 | TG ROOFING AND SOLAR ELECTRIC | 24 | 0 | 9.96 | $3.65 |
| 11 | PELL SOLAR | 23 | 0 | 10.02 | $3.37 |
| 12 | VERENGO | 23 | 0 | 7.11 | $4.81 |
Neighboring zips
The nearest zip markets
By distance between zip centroids
| Zip | Distance | Installs | $/W | Score |
|---|---|---|---|---|
| 91701 Rancho Cucamonga | 2.1 km | 2,764 | $4.25 | 51 |
| 91730 Rancho Cucamonga | 4.6 km | 2,511 | $4.20 | 57 |
| 91729 Rancho Cucamonga | 4.6 km | 15 | $3.57 | 42 |
| 91739 Rancho Cucamonga | 6.3 km | 3,690 | $3.87 | 56 |
| 91784 Upland | 7.2 km | 2,611 | $4.24 | 53 |
| 91785 Upland | 8.0 km | 6 | $8.48 | 28 |
Same city
Other zips in Rancho Cucamonga
Equipment
What gets installed in 91737
Share of systems with a recorded brand
Modules
QCELLS NORTH AMERICA19.4%
SUNPOWER12.6%
CSI SOLAR5.9%
LONGI GREEN ENERGY TECHNOLOGY5.7%
REC GROUP5.1%
Inverters
ENPHASE ENERGY33.3%
SOLAREDGE28.4%
SUNPOWER9.2%
SMA AMERICA7.2%
TESLA6.1%
Frequently asked
Quick answers about 91737
How many solar installations are there in 91737?
SolarDNA counts 1,916 active solar installations in Rancho Cucamonga 91737, 1,904 of them residential, with data through May 7, 2026.
How much does solar cost in 91737?
The median residential system in 91737 cost $4.07 per watt over the trailing twelve months, $0.20/W below the California median.
Is solar growing in 91737?
Installations in 91737 are up 64.1%: 128 in the trailing twelve months versus 78 before.
Who installs solar in 91737?
TESLA, SUNRUN, SUNPOWER lead the 349 installers with systems in 91737. The full comp set is above.
Is 91737 a good market for solar sales?
91737 scores 61 out of 100 (Excellent, higher than 99% of U.S. zip markets).