San Leandro, CA 94578 solar market data
Updated April 30, 2026 By The SolarDNA Data Team
San Leandro 94578 has 914 solar installations at a median installed cost of $4.91/W, installations up 38.2% over the trailing twelve months, and a Market Score of 49 — higher than 87% of U.S. zip markets.
Versus California
How 94578 compares with the state
Installed cost
$0.65/W above
state median $4.26/W
Market score
49 vs 53
California scores 53
Share of state installs
0.04%
of 2.3M tracked statewide
Battery attach
13.0%
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: 92–124 installs (midpoint 108)
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
94578 by year
94 installs in the trailing twelve months vs 68 before
Installations by year
Median installed cost, $/W DC by year
Installer comp set
Who installs in 94578
Ranked by systems recorded in this zip
| # | Installer | Installs | 12-mo | Avg kW | $/W |
|---|---|---|---|---|---|
| 1 | SUNRUN | 183 | 26 | 10.12 | $4.45 |
| 2 | TESLA | 126 | 3 | 4.88 | $5.12 |
| 3 | SUNPOWER | 36 | 0 | 16.93 | $4.97 |
| 4 | BRIGHT OPS | 29 | 19 | 4.66 | $7.05 |
| 5 | FREEDOM FOREVER | 25 | 0 | 4.96 | $5.79 |
| 6 | SHARP ELECTRONICS | 23 | 0 | 1.58 | $5.77 |
| 7 | PETERSENDEAN | 20 | 0 | 5.35 | $4.07 |
| 8 | SEMPER SOLARIS | 19 | 1 | 4.97 | $4.64 |
| 9 | BETTER EARTH | 19 | 0 | 5.89 | $4.96 |
| 10 | KOTA CONSTRUCTION | 18 | 0 | 6.06 | $5.80 |
| 11 | HIGH DEFINITION SOLAR | 16 | 0 | 2.66 | $7.09 |
| 12 | SUNGEVITY | 15 | 0 | 5.79 | $3.83 |
Neighboring zips
The nearest zip markets
By distance between zip centroids
| Zip | Distance | Installs | $/W | Score |
|---|---|---|---|---|
| 94580 San Lorenzo | 2.7 km | 929 | $4.73 | 36 |
| 94579 San Leandro | 2.8 km | 729 | $4.54 | 41 |
| 94577 San Leandro | 3.7 km | 1,648 | $4.69 | 57 |
| 94546 Castro Valley | 4.0 km | 2,887 | $4.54 | 56 |
| 94541 Hayward | 4.4 km | 1,929 | $4.64 | 47 |
| 94603 Oakland | 5.9 km | 726 | $5.12 | 50 |
Same city
Other zips in San Leandro
Equipment
What gets installed in 94578
Share of systems with a recorded brand
Modules
QCELLS NORTH AMERICA18.0%
CSI SOLAR9.0%
SUNPOWER7.8%
REC SOLAR6.7%
JINKO SOLAR5.2%
Inverters
SOLAREDGE31.8%
ENPHASE ENERGY30.2%
TESLA7.6%
SUNPOWER6.2%
SMA AMERICA4.7%
Frequently asked
Quick answers about 94578
How many solar installations are there in 94578?
SolarDNA counts 914 active solar installations in San Leandro 94578, 881 of them residential, with data through April 30, 2026.
How much does solar cost in 94578?
The median residential system in 94578 cost $4.91 per watt over the trailing twelve months, $0.65/W above the California median.
Is solar growing in 94578?
Installations in 94578 are up 38.2%: 94 in the trailing twelve months versus 68 before.
Who installs solar in 94578?
SUNRUN, TESLA, SUNPOWER lead the 177 installers with systems in 94578. The full comp set is above.
Is 94578 a good market for solar sales?
94578 scores 49 out of 100 (Great, higher than 87% of U.S. zip markets).