San Joaquin County, CA solar installation & market data
Updated May 20, 2026 By The SolarDNA Data Team
San Joaquin County has 70,056 solar installations across 37 zip codes at a median installed cost of $4.34/W, installations down 0.1% over the trailing twelve months, and an installs-weighted Market Score of 47.
Active installations
70,056
Zip markets
37
Median cost
$4.34/W
12-mo growth
▼ 0.1%
Installers active
1,151
County Market Score
Great · installs-weighted across 37 zips
Best zip in San Joaquin County scores higher than 99% of U.S. zip markets.
Versus California
How San Joaquin County compares with the state
Installed cost
$0.07/W above
state median $4.26/W
Market score
47 vs 53
California scores 53
Share of state installs
3.10%
of 2.3M tracked statewide
Battery attach
8.0%
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: 5,101–6,235 installs (midpoint 5,668)
Trailing-12-month installs carried forward at half the observed growth rate (capped at ±30%), with a ±10% band. Not a forecast of permits or policy.
Growth & pricing
San Joaquin County by year
5,671 installs in the trailing twelve months vs 5,676 before
Installations by year
Median installed cost, $/W DC by year
Installer comp set
Who installs in San Joaquin County
Summed across every zip in the county
| # | Installer | Installs | 12-mo | Zips | $/W |
|---|---|---|---|---|---|
| 1 | SUNRUN | 15,855 | 1,828 | 32 | $4.18 |
| 2 | TESLA | 8,775 | 208 | 32 | $5.12 |
| 3 | SUNPOWER | 5,453 | 22 | 28 | $4.40 |
| 4 | BRIGHT OPS | 2,625 | 320 | 27 | $4.51 |
| 5 | INFINITY ENERGY | 1,712 | 3 | 28 | $4.33 |
| 6 | FREEDOM FOREVER | 1,634 | 82 | 29 | $4.54 |
| 7 | SONRAY CONSTRUCTION | 1,306 | 207 | 13 | $3.64 |
| 8 | CITADEL ROOFING AND SOLAR | 1,144 | 478 | 22 | $2.79 |
| 9 | EMPOWER ELECTRIC | 893 | 0 | 25 | $5.45 |
| 10 | AMERICAN ARRAY SOLAR | 851 | 0 | 21 | $3.62 |
| 11 | V3 ELECTRIC | 802 | 106 | 29 | $4.67 |
| 12 | FUTURE ENERGY SAVERS | 710 | 19 | 23 | $6.20 |
| 13 | PETERSENDEAN | 614 | 0 | 27 | $3.65 |
| 14 | COMPLETE SOLAR | 603 | 78 | 23 | $4.08 |
| 15 | 1ST LIGHT ENERGY | 593 | 1 | 27 | $4.01 |
| 16 | KURIOS ENERGY | 584 | 0 | 26 | $3.65 |
| 17 | BTA SOLAR | 569 | 0 | 26 | $3.95 |
| 18 | THE SOLAR COMPANY | 517 | 0 | 26 | $5.18 |
| 19 | ALLEN ELECTRIC | 506 | 60 | 12 | $2.52 |
| 20 | SEMPER SOLARIS | 454 | 30 | 25 | $4.43 |
| 21 | SYNERGY HOME IMPROVEMENT | 443 | 0 | 20 | $4.28 |
| 22 | SENGA ENERGY | 402 | 115 | 27 | $5.17 |
| 23 | CLEAR SOLAR | 397 | 0 | 26 | $4.25 |
| 24 | LANDMARK CAPITAL | 386 | 0 | 26 | $4.48 |
| 25 | BETTER EARTH | 358 | 0 | 21 | $5.34 |
Zip markets
Zips in San Joaquin County
Ranked by installations · click for the zip market
| Zip | Installs | $/W | Score |
|---|---|---|---|
| 95337 | 9,645 | $4.25 | 47 B |
| 95336 | 6,255 | $4.42 | 49 B |
| 95376 | 5,701 | $4.25 | 48 B |
| 95206 | 5,591 | $4.50 | 50 B |
| 95377 | 5,514 | $4.25 | 51 A |
| 95209 | 5,289 | $4.50 | 46 B |
| 95330 | 4,216 | $4.16 | 57 A |
| 95219 | 3,693 | $4.14 | 43 C |
| 95212 | 3,668 | $4.25 | 45 C |
| 95207 | 2,693 | $4.56 | 39 C |
| 95210 | 2,221 | $4.70 | 45 C |
| 95204 | 2,217 | $4.60 | 46 B |
| 95205 | 1,869 | $4.59 | 46 B |
| 95215 | 1,807 | $4.22 | 60 A |
| 95304 | 1,660 | $4.25 | 44 C |
| 95366 | 1,570 | $4.23 | 45 C |
| 95320 | 1,516 | $4.32 | 41 C |
| 95220 | 988 | $4.00 | 45 C |
| 95240 | 797 | $4.03 | 43 C |
| 95203 | 757 | $4.66 | 40 C |
| 95236 | 621 | $3.99 | 43 C |
| 95237 | 383 | $4.55 | 39 C |
| 95258 | 372 | $4.43 | 39 C |
| 95242 | 370 | $3.95 | 42 C |
| 95227 | 180 | $3.86 | 41 C |
| 95231 | 180 | $4.44 | 38 D |
| 95202 | 92 | $4.07 | 40 C |
| 95686 | 58 | $4.13 | 39 C |
| 95230 | 55 | $3.84 | 41 C |
| 95201 | 37 | $4.50 | 37 D |
| 95385 | 19 | $3.06 | 44 C |
| 95391 | 10 | $4.66 | 37 D |
| 95253 | 8 | $4.30 | 38 D |
| 95213 | 1 | $2.35 | 54 A |
| 95241 | 1 | $3.97 | 40 C |
| 95296 | 1 | $3.66 | 41 C |
| 95378 | 1 | $1.32 | 48 B |