San Mateo, CA 94404 solar market data
Updated April 13, 2026 By The SolarDNA Data Team
San Mateo 94404 has 1,036 solar installations at a median installed cost of $4.46/W, installations up 27.4% over the trailing twelve months, and a Market Score of 49 — higher than 87% of U.S. zip markets.
Versus California
How 94404 compares with the state
Installed cost
$0.20/W above
state median $4.26/W
Market score
49 vs 53
California scores 53
Share of state installs
0.05%
of 2.3M tracked statewide
Battery attach
12.9%
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: 78–102 installs (midpoint 90)
Trailing-12-month installs carried forward at half the observed growth rate (capped at ±30%), with a ±14% band. Not a forecast of permits or policy.
Growth & pricing
94404 by year
79 installs in the trailing twelve months vs 62 before
Installations by year
Median installed cost, $/W DC by year
Installer comp set
Who installs in 94404
Ranked by systems recorded in this zip
| # | Installer | Installs | 12-mo | Avg kW | $/W |
|---|---|---|---|---|---|
| 1 | TESLA | 232 | 4 | 6.05 | $5.12 |
| 2 | SUNRUN | 156 | 17 | 5.4 | $4.02 |
| 3 | SUNPOWER | 46 | 1 | 42.02 | $4.23 |
| 4 | SEMPER SOLARIS | 31 | 3 | 5.72 | $3.96 |
| 5 | PETERSENDEAN | 27 | 0 | 5.78 | $3.78 |
| 6 | WEST COAST SOLAR | 22 | 0 | 5.53 | $3.60 |
| 7 | ROCKIN ROOFERS | 21 | 3 | 6.56 | $4.75 |
| 8 | BETTER EARTH | 19 | 0 | 6.19 | $4.74 |
| 9 | HIGH DEFINITION SOLAR | 19 | 0 | 2.25 | $8.55 |
| 10 | SUNGEVITY | 19 | 0 | 4.69 | $3.62 |
| 11 | CLEAN SOLAR | 16 | 4 | 6.34 | $4.83 |
| 12 | FREEDOM FOREVER | 15 | 5 | 5.9 | $5.28 |
Neighboring zips
The nearest zip markets
By distance between zip centroids
| Zip | Distance | Installs | $/W | Score |
|---|---|---|---|---|
| 94065 Redwood City | 3.0 km | 444 | $4.34 | 40 |
| 94403 San Mateo | 3.1 km | 1,992 | $4.29 | 61 |
| 94002 Belmont | 4.5 km | 1,668 | $4.45 | 44 |
| 94402 San Mateo | 5.1 km | 1,285 | $4.79 | 53 |
| 94401 San Mateo | 5.1 km | 695 | $4.69 | 52 |
| 94070 San Carlos | 6.3 km | 2,576 | $4.54 | 46 |
Same city
Other zips in San Mateo
Equipment
What gets installed in 94404
Share of systems with a recorded brand
Modules
QCELLS NORTH AMERICA14.1%
CSI SOLAR9.5%
SUNPOWER9.5%
REC SOLAR7.5%
REC GROUP6.3%
Inverters
ENPHASE ENERGY26.7%
SOLAREDGE24.4%
TESLA11.6%
SUNPOWER7.0%
ABB6.8%
Frequently asked
Quick answers about 94404
How many solar installations are there in 94404?
SolarDNA counts 1,036 active solar installations in San Mateo 94404, 1,004 of them residential, with data through April 13, 2026.
How much does solar cost in 94404?
The median residential system in 94404 cost $4.46 per watt over the trailing twelve months, $0.20/W above the California median.
Is solar growing in 94404?
Installations in 94404 are up 27.4%: 79 in the trailing twelve months versus 62 before.
Who installs solar in 94404?
TESLA, SUNRUN, SUNPOWER lead the 175 installers with systems in 94404. The full comp set is above.
Is 94404 a good market for solar sales?
94404 scores 49 out of 100 (Great, higher than 87% of U.S. zip markets).