Ontario, CA 91761 solar market data
Updated May 9, 2026 By The SolarDNA Data Team
Ontario 91761 has 7,129 solar installations at a median installed cost of $4.25/W, installations down 16.3% over the trailing twelve months, and a Market Score of 44 — higher than 65% of U.S. zip markets.
Versus California
How 91761 compares with the state
Installed cost
$0.01/W below
state median $4.26/W
Market score
44 vs 53
California scores 53
Share of state installs
0.32%
of 2.3M tracked statewide
Battery attach
11.9%
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: 578–706 installs (midpoint 642)
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
91761 by year
699 installs in the trailing twelve months vs 835 before
Installations by year
Median installed cost, $/W DC by year
Installer comp set
Who installs in 91761
Ranked by systems recorded in this zip
| # | Installer | Installs | 12-mo | Avg kW | $/W |
|---|---|---|---|---|---|
| 1 | SUNPOWER | 2,011 | 117 | 4.32 | $4.25 |
| 2 | SUNRUN | 828 | 121 | 5.63 | $4.19 |
| 3 | SUNNOVA ENERGY | 767 | 0 | 3.38 | $3.80 |
| 4 | TESLA | 379 | 0 | 6.56 | $5.08 |
| 5 | VERENGO | 339 | 0 | 3.31 | $2.37 |
| 6 | SUNSTREET ENERGY GROUP | 232 | 0 | 3.04 | $3.28 |
| 7 | COMPLETE SOLAR | 217 | 137 | 4.05 | $4.25 |
| 8 | BRIGHT OPS | 140 | 8 | 7.53 | $4.72 |
| 9 | LEONARD ROOFING | 124 | 0 | 3.75 | $2.28 |
| 10 | FREEDOM FOREVER | 102 | 18 | 7.58 | $3.77 |
| 11 | ESP CONTRACTING | 83 | 0 | 7.18 | $4.42 |
| 12 | G A F ENERGY | 76 | 65 | 3.66 | $7.51 |
Neighboring zips
The nearest zip markets
By distance between zip centroids
| Zip | Distance | Installs | $/W | Score |
|---|---|---|---|---|
| 91764 Ontario | 5.0 km | 1,959 | $4.32 | 57 |
| 91762 Ontario | 5.3 km | 4,417 | $4.35 | 45 |
| 91710 Chino | 6.4 km | 4,930 | $4.25 | 50 |
| 91729 Rancho Cucamonga | 8.6 km | 15 | $3.57 | 42 |
| 91730 Rancho Cucamonga | 8.7 km | 2,511 | $4.20 | 57 |
| 91763 Montclair | 8.7 km | 1,190 | $4.44 | 44 |
Same city
Other zips in Ontario
Equipment
What gets installed in 91761
Share of systems with a recorded brand
Modules
QCELLS NORTH AMERICA29.7%
SUNPOWER19.4%
LG ELECTRONICS11.9%
JA SOLAR4.8%
CSI SOLAR3.8%
Inverters
ENPHASE ENERGY49.3%
SOLAREDGE22.2%
SUNPOWER17.7%
ABB2.1%
TESLA2.0%
Frequently asked
Quick answers about 91761
How many solar installations are there in 91761?
SolarDNA counts 7,129 active solar installations in Ontario 91761, 7,034 of them residential, with data through May 9, 2026.
How much does solar cost in 91761?
The median residential system in 91761 cost $4.25 per watt over the trailing twelve months, $0.01/W below the California median.
Is solar growing in 91761?
Installations in 91761 are down 16.3%: 699 in the trailing twelve months versus 835 before.
Who installs solar in 91761?
SUNPOWER, SUNRUN, SUNNOVA ENERGY lead the 392 installers with systems in 91761. The full comp set is above.
Is 91761 a good market for solar sales?
91761 scores 44 out of 100 (Good, higher than 65% of U.S. zip markets).