Ontario, CA 91764 solar market data
Updated May 6, 2026 By The SolarDNA Data Team
Ontario 91764 has 1,959 solar installations at a median installed cost of $4.32/W, installations up 36.9% 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 91764 compares with the state
Installed cost
$0.06/W above
state median $4.26/W
Market score
57 vs 53
California scores 53
Share of state installs
0.09%
of 2.3M tracked statewide
Battery attach
14.4%
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: 235–319 installs (midpoint 277)
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
91764 by year
241 installs in the trailing twelve months vs 176 before
Installations by year
Median installed cost, $/W DC by year
Installer comp set
Who installs in 91764
Ranked by systems recorded in this zip
| # | Installer | Installs | 12-mo | Avg kW | $/W |
|---|---|---|---|---|---|
| 1 | SUNPOWER | 438 | 14 | 10.74 | $4.25 |
| 2 | SUNRUN | 218 | 63 | 6.21 | $3.97 |
| 3 | TESLA | 114 | 0 | 5.01 | $5.12 |
| 4 | BRIGHT OPS | 80 | 16 | 7.18 | $4.55 |
| 5 | ESP CONTRACTING | 67 | 0 | 5.93 | $4.29 |
| 6 | B P I | 66 | 63 | 25.58 | — |
| 7 | V3 ELECTRIC | 55 | 12 | 5.94 | $4.43 |
| 8 | FREEDOM FOREVER | 45 | 4 | 7.02 | $4.14 |
| 9 | COMPLETE SOLAR | 34 | 7 | 5.45 | $4.25 |
| 10 | BETTER EARTH | 21 | 0 | 7.57 | $5.58 |
| 11 | POWUR | 20 | 0 | 8.27 | $5.09 |
| 12 | SUNGEVITY | 20 | 0 | 6.79 | $3.64 |
Neighboring zips
The nearest zip markets
By distance between zip centroids
| Zip | Distance | Installs | $/W | Score |
|---|---|---|---|---|
| 91762 Ontario | 4.3 km | 4,417 | $4.35 | 45 |
| 91730 Rancho Cucamonga | 4.5 km | 2,511 | $4.20 | 57 |
| 91729 Rancho Cucamonga | 4.5 km | 15 | $3.57 | 42 |
| 91761 Ontario | 5.0 km | 7,129 | $4.25 | 44 |
| 91786 Upland | 5.2 km | 2,225 | $4.14 | 50 |
| 91785 Upland | 5.2 km | 6 | $8.48 | 28 |
Same city
Other zips in Ontario
Equipment
What gets installed in 91764
Share of systems with a recorded brand
Modules
QCELLS NORTH AMERICA23.8%
SUNPOWER20.3%
CSI SOLAR9.3%
LONGI GREEN ENERGY TECHNOLOGY8.2%
VIETNAM SUNERGY3.6%
Inverters
ENPHASE ENERGY34.3%
SOLAREDGE30.3%
SUNPOWER10.6%
POWER-ONE8.9%
ABB3.8%
Frequently asked
Quick answers about 91764
How many solar installations are there in 91764?
SolarDNA counts 1,959 active solar installations in Ontario 91764, 1,899 of them residential, with data through May 6, 2026.
How much does solar cost in 91764?
The median residential system in 91764 cost $4.32 per watt over the trailing twelve months, $0.06/W above the California median.
Is solar growing in 91764?
Installations in 91764 are up 36.9%: 241 in the trailing twelve months versus 176 before.
Who installs solar in 91764?
SUNPOWER, SUNRUN, TESLA lead the 268 installers with systems in 91764. The full comp set is above.
Is 91764 a good market for solar sales?
91764 scores 57 out of 100 (Excellent, higher than 99% of U.S. zip markets).