Rancho Cucamonga, CA 91730 solar market data
Updated May 19, 2026 By The SolarDNA Data Team
Rancho Cucamonga 91730 has 2,511 solar installations at a median installed cost of $4.20/W, installations up 33.3% over the trailing twelve months, and a Market Score of 57 — higher than 99% of U.S. zip markets.
Zip Market Score
Excellent · higher than 99% of zips
Versus California
How 91730 compares with the state
Installed cost
$0.07/W below
state median $4.26/W
Market score
57 vs 53
California scores 53
Share of state installs
0.11%
of 2.3M tracked statewide
Battery attach
16.6%
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: 200–270 installs (midpoint 235)
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
91730 by year
204 installs in the trailing twelve months vs 153 before
Installations by year
Median installed cost, $/W DC by year
Installer comp set
Who installs in 91730
Ranked by systems recorded in this zip
| # | Installer | Installs | 12-mo | Avg kW | $/W |
|---|---|---|---|---|---|
| 1 | SUNRUN | 470 | 44 | 12.35 | $4.38 |
| 2 | TESLA | 246 | 11 | 7.67 | $5.04 |
| 3 | SUNPOWER | 145 | 0 | 7.34 | $4.02 |
| 4 | BRIGHT OPS | 118 | 19 | 7.33 | $4.28 |
| 5 | FREEDOM FOREVER | 71 | 5 | 7.1 | $4.53 |
| 6 | SUNGEVITY | 62 | 0 | 6.7 | $3.73 |
| 7 | SOLARMAX | 53 | 0 | 6.89 | $3.47 |
| 8 | V3 ELECTRIC | 48 | 12 | 6.72 | $3.65 |
| 9 | COMPLETE SOLAR | 37 | 20 | 19.96 | $3.91 |
| 10 | SEMPER SOLARIS | 34 | 1 | 7.52 | $4.06 |
| 11 | ESP CONTRACTING | 33 | 0 | 6.36 | $4.65 |
| 12 | G A F ENERGY | 27 | 17 | 3.46 | $7.05 |
Neighboring zips
The nearest zip markets
By distance between zip centroids
| Zip | Distance | Installs | $/W | Score |
|---|---|---|---|---|
| 91729 Rancho Cucamonga | 0.1 km | 15 | $3.57 | 42 |
| 91701 Rancho Cucamonga | 3.4 km | 2,764 | $4.25 | 51 |
| 91764 Ontario | 4.5 km | 1,959 | $4.32 | 57 |
| 91737 Rancho Cucamonga | 4.6 km | 1,916 | $4.07 | 61 |
| 91785 Upland | 6.0 km | 6 | $8.48 | 28 |
| 91786 Upland | 6.0 km | 2,225 | $4.14 | 50 |
Same city
Other zips in Rancho Cucamonga
Equipment
What gets installed in 91730
Share of systems with a recorded brand
Modules
QCELLS NORTH AMERICA24.6%
SUNPOWER9.8%
LONGI GREEN ENERGY TECHNOLOGY7.6%
CSI SOLAR6.5%
TRINA SOLAR4.8%
Inverters
SOLAREDGE37.8%
ENPHASE ENERGY33.5%
SMA AMERICA5.2%
ABB4.5%
TESLA4.4%
Frequently asked
Quick answers about 91730
How many solar installations are there in 91730?
SolarDNA counts 2,511 active solar installations in Rancho Cucamonga 91730, 2,361 of them residential, with data through May 19, 2026.
How much does solar cost in 91730?
The median residential system in 91730 cost $4.20 per watt over the trailing twelve months, $0.07/W below the California median.
Is solar growing in 91730?
Installations in 91730 are up 33.3%: 204 in the trailing twelve months versus 153 before.
Who installs solar in 91730?
SUNRUN, TESLA, SUNPOWER lead the 353 installers with systems in 91730. The full comp set is above.
Is 91730 a good market for solar sales?
91730 scores 57 out of 100 (Excellent, higher than 99% of U.S. zip markets).