San Mateo County, CA solar installation & market data
Updated May 14, 2026 By The SolarDNA Data Team
San Mateo County has 32,204 solar installations across 32 zip codes at a median installed cost of $4.70/W, installations up 26.7% over the trailing twelve months, and an installs-weighted Market Score of 49.
Active installations
32,204
Zip markets
32
Median cost
$4.70/W
12-mo growth
▲ 26.7%
Installers active
1,078
County Market Score
Great · installs-weighted across 32 zips
Best zip in San Mateo County scores higher than 99% of U.S. zip markets.
Versus California
How San Mateo County compares with the state
Installed cost
$0.44/W above
state median $4.26/W
Market score
49 vs 53
California scores 53
Share of state installs
1.42%
of 2.3M tracked statewide
Battery attach
15.6%
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: 2,664–3,484 installs (midpoint 3,074)
Trailing-12-month installs carried forward at half the observed growth rate (capped at ±30%), with a ±13% band. Not a forecast of permits or policy.
Growth & pricing
San Mateo County by year
2,712 installs in the trailing twelve months vs 2,140 before
Installations by year
Median installed cost, $/W DC by year
Installer comp set
Who installs in San Mateo County
Summed across every zip in the county
| # | Installer | Installs | 12-mo | Zips | $/W |
|---|---|---|---|---|---|
| 1 | TESLA | 6,637 | 206 | 29 | $5.16 |
| 2 | SUNRUN | 3,347 | 362 | 28 | $4.35 |
| 3 | SUNPOWER | 1,283 | 14 | 27 | $4.55 |
| 4 | COBALT POWER SYSTEMS | 1,022 | 76 | 26 | $5.62 |
| 5 | SEMPER SOLARIS | 865 | 59 | 28 | $4.56 |
| 6 | CLEAN SOLAR | 744 | 43 | 28 | $4.62 |
| 7 | ROCKIN ROOFERS | 691 | 99 | 30 | $4.40 |
| 8 | PETERSENDEAN | 521 | 0 | 29 | $4.02 |
| 9 | BRIGHT OPS | 437 | 354 | 24 | $5.62 |
| 10 | BAY AREA ENERGY SOLUTIONS | 383 | 35 | 20 | $4.74 |
| 11 | RGS ENERGY | 365 | 0 | 24 | $8.00 |
| 12 | ALL BAY SOLAR CONSTRUCTION | 344 | 26 | 26 | $4.56 |
| 13 | CITADEL ROOFING AND SOLAR | 343 | 53 | 24 | $3.17 |
| 14 | BETTER EARTH | 340 | 0 | 24 | $4.73 |
| 15 | YOUR ENERGY SOLUTIONS | 331 | 51 | 23 | $3.98 |
| 16 | SOLAR TECHNOLOGIES | 330 | 24 | 28 | $4.53 |
| 17 | SUNGEVITY | 324 | 0 | 26 | $4.33 |
| 18 | SOLAR OPTIMUM DESIGN ELECTRIC | 317 | 0 | 27 | $3.04 |
| 19 | NRG CLEAN ENERGY | 306 | 0 | 28 | $3.52 |
| 20 | NEXUS ENERGY SYSTEMS | 305 | 61 | 26 | $5.49 |
| 21 | FREEDOM FOREVER | 258 | 47 | 25 | $4.95 |
| 22 | THE SOLAR COMPANY | 235 | 0 | 27 | $5.61 |
| 23 | LUMINALT ENERGY | 234 | 0 | 26 | $6.18 |
| 24 | HIGH DEFINITION SOLAR | 231 | 0 | 23 | $7.02 |
| 25 | COMPLETE SOLAR | 188 | 2 | 25 | $4.59 |
Zip markets
Zips in San Mateo County
Ranked by installations · click for the zip market
| Zip | Installs | $/W | Score |
|---|---|---|---|
| 94062 | 2,630 | $4.92 | 47 B |
| 94010 | 2,594 | $4.66 | 52 A |
| 94070 | 2,576 | $4.54 | 46 B |
| 94025 | 2,472 | $4.68 | 48 B |
| 94403 | 1,992 | $4.29 | 61 A |
| 94061 | 1,866 | $4.58 | 52 A |
| 94044 | 1,783 | $5.04 | 56 A |
| 94002 | 1,668 | $4.45 | 44 C |
| 94080 | 1,619 | $4.73 | 57 A |
| 94402 | 1,285 | $4.79 | 53 A |
| 94066 | 1,251 | $4.62 | 48 B |
| 94404 | 1,036 | $4.46 | 49 B |
| 94015 | 1,021 | $4.90 | 53 A |
| 94303 | 1,001 | $5.02 | 52 A |
| 94028 | 1,001 | $5.36 | 38 D |
| 94019 | 932 | $4.91 | 52 A |
| 94030 | 880 | $4.26 | 48 B |
| 94014 | 764 | $4.41 | 54 A |
| 94027 | 740 | $5.10 | 34 D |
| 94401 | 695 | $4.69 | 52 A |
| 94063 | 596 | $4.55 | 53 A |
| 94065 | 444 | $4.34 | 40 C |
| 94018 | 394 | $5.12 | 36 D |
| 94037 | 311 | $4.81 | 37 D |
| 94005 | 231 | $4.38 | 39 C |
| 94038 | 218 | $5.06 | 36 D |
| 94020 | 116 | $5.20 | 35 D |
| 94060 | 59 | $5.39 | 33 D |
| 94074 | 19 | $6.22 | 29 F |
| 94021 | 7 | $5.10 | 34 D |
| 94026 | 2 | $7.74 | 28 F |
| 94017 | 1 | $9.94 | 28 F |