San Mateo, CA 94402 solar market data
Updated April 28, 2026 By The SolarDNA Data Team
San Mateo 94402 has 1,285 solar installations at a median installed cost of $4.79/W, installations up 41.4% over the trailing twelve months, and a Market Score of 53 — higher than 96% of U.S. zip markets.
Zip Market Score
Excellent · higher than 96% of zips
Versus California
How 94402 compares with the state
Installed cost
$0.53/W above
state median $4.26/W
Market score
53 vs 53
California scores 53
Share of state installs
0.06%
of 2.3M tracked statewide
Battery attach
17.0%
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: 120–162 installs (midpoint 141)
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
94402 by year
123 installs in the trailing twelve months vs 87 before
Installations by year
Median installed cost, $/W DC by year
Installer comp set
Who installs in 94402
Ranked by systems recorded in this zip
| # | Installer | Installs | 12-mo | Avg kW | $/W |
|---|---|---|---|---|---|
| 1 | TESLA | 276 | 15 | 6.47 | $5.10 |
| 2 | SUNRUN | 99 | 5 | 5.84 | $4.43 |
| 3 | SUNPOWER | 62 | 2 | 19.51 | $4.71 |
| 4 | COBALT POWER SYSTEMS | 37 | 2 | 7.21 | $5.30 |
| 5 | ALL BAY SOLAR CONSTRUCTION | 35 | 4 | 8.25 | $4.55 |
| 6 | SEMPER SOLARIS | 35 | 4 | 5.27 | $4.30 |
| 7 | ROCKIN ROOFERS | 33 | 10 | 6.39 | $5.40 |
| 8 | CLEAN SOLAR | 33 | 3 | 7.24 | $4.75 |
| 9 | SOLAR TECHNOLOGIES | 27 | 1 | 11.16 | $4.68 |
| 10 | BAY AREA ENERGY SOLUTIONS | 20 | 2 | 6.5 | $4.44 |
| 11 | YOUR ENERGY SOLUTIONS | 19 | 4 | 7.01 | $4.25 |
| 12 | BETTER EARTH | 19 | 0 | 5.41 | $4.44 |
Neighboring zips
The nearest zip markets
By distance between zip centroids
| Zip | Distance | Installs | $/W | Score |
|---|---|---|---|---|
| 94401 San Mateo | 2.6 km | 695 | $4.69 | 52 |
| 94403 San Mateo | 2.7 km | 1,992 | $4.29 | 61 |
| 94010 Burlingame | 4.0 km | 2,594 | $4.66 | 52 |
| 94002 Belmont | 4.8 km | 1,668 | $4.45 | 44 |
| 94404 San Mateo | 5.1 km | 1,036 | $4.46 | 49 |
| 94065 Redwood City | 7.2 km | 444 | $4.34 | 40 |
Same city
Other zips in San Mateo
Equipment
What gets installed in 94402
Share of systems with a recorded brand
Modules
SUNPOWER15.9%
QCELLS NORTH AMERICA14.2%
LG ELECTRONICS7.2%
REC GROUP5.7%
CSI SOLAR5.6%
Inverters
ENPHASE ENERGY28.6%
SOLAREDGE23.9%
SUNPOWER12.6%
TESLA11.7%
SMA AMERICA6.6%
Frequently asked
Quick answers about 94402
How many solar installations are there in 94402?
SolarDNA counts 1,285 active solar installations in San Mateo 94402, 1,262 of them residential, with data through April 28, 2026.
How much does solar cost in 94402?
The median residential system in 94402 cost $4.79 per watt over the trailing twelve months, $0.53/W above the California median.
Is solar growing in 94402?
Installations in 94402 are up 41.4%: 123 in the trailing twelve months versus 87 before.
Who installs solar in 94402?
TESLA, SUNRUN, SUNPOWER lead the 218 installers with systems in 94402. The full comp set is above.
Is 94402 a good market for solar sales?
94402 scores 53 out of 100 (Excellent, higher than 96% of U.S. zip markets).