Tuolumne County, CA solar installation & market data
Updated May 14, 2026 By The SolarDNA Data Team
Tuolumne County has 5,236 solar installations across 14 zip codes at a median installed cost of $4.12/W, installations down 22.7% over the trailing twelve months, and an installs-weighted Market Score of 42.
Active installations
5,236
Zip markets
14
Median cost
$4.12/W
12-mo growth
▼ 22.7%
Installers active
349
County Market Score
Good · installs-weighted across 14 zips
Best zip in Tuolumne County scores higher than 58% of U.S. zip markets.
Versus California
How Tuolumne County compares with the state
Installed cost
$0.15/W below
state median $4.26/W
Market score
42 vs 53
California scores 53
Share of state installs
0.23%
of 2.3M tracked statewide
Battery attach
14.3%
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: 355–447 installs (midpoint 401)
Trailing-12-month installs carried forward at half the observed growth rate (capped at ±30%), with a ±11% band. Not a forecast of permits or policy.
Growth & pricing
Tuolumne County by year
452 installs in the trailing twelve months vs 585 before
Installations by year
Median installed cost, $/W DC by year
Installer comp set
Who installs in Tuolumne County
Summed across every zip in the county
| # | Installer | Installs | 12-mo | Zips | $/W |
|---|---|---|---|---|---|
| 1 | SUNRUN | 521 | 70 | 11 | $4.41 |
| 2 | CLEAR SOLAR | 508 | 0 | 11 | $4.37 |
| 3 | SOLARWORX | 464 | 13 | 10 | $3.48 |
| 4 | ALTERNATIVE POWER SOLUTIONS | 439 | 0 | 10 | $3.30 |
| 5 | TESLA | 359 | 23 | 10 | $5.09 |
| 6 | V3 ELECTRIC | 251 | 19 | 7 | $4.30 |
| 7 | ROOFXPERTS | 139 | 63 | 11 | $6.28 |
| 8 | RADIUS ENERGY | 125 | 3 | 7 | $5.06 |
| 9 | BRIGHT OPS | 119 | 90 | 8 | $4.31 |
| 10 | HOOKED ON SOLAR | 105 | 0 | 8 | $4.40 |
| 11 | SIG SOLAR | 104 | 0 | 8 | $4.00 |
| 12 | BENDIX ELECTRIC | 89 | 0 | 8 | $3.33 |
| 13 | FREEDOM FOREVER | 86 | 8 | 7 | $4.80 |
| 14 | RICHARD HEATH ASSOCIATES | 84 | 0 | 7 | — |
| 15 | EPIC ENERGY CA | 74 | 0 | 7 | $4.41 |
| 16 | ACRO ENERGY | 64 | 0 | 11 | $7.58 |
| 17 | INFINITY ENERGY | 61 | 0 | 8 | $4.76 |
| 18 | SIG SOLAR S I G | 53 | 36 | 8 | $6.90 |
| 19 | SUNLECTRIC | 51 | 2 | 6 | $3.94 |
| 20 | SEMPER SOLARIS | 43 | 0 | 4 | $5.61 |
| 21 | PETERSENDEAN | 41 | 0 | 7 | $3.75 |
| 22 | SOLAR SAVINGS DIRECT | 39 | 0 | 6 | $3.90 |
| 23 | CALIFORNIA SOLAR SYSTEMS | 37 | 0 | 5 | $4.07 |
| 24 | GOLD RUSH ENERGY SOLUTIONS | 36 | 0 | 7 | $3.67 |
| 25 | GOLD ELECTRIC | 36 | 1 | 6 | $3.85 |
Zip markets
Zips in Tuolumne County
Ranked by installations · click for the zip market
| Zip | Installs | $/W | Score |
|---|---|---|---|
| 95370 | 2,897 | $4.12 | 43 C |
| 95327 | 614 | $4.07 | 41 C |
| 95321 | 547 | $3.92 | 43 C |
| 95379 | 368 | $4.39 | 40 C |
| 95372 | 263 | $4.24 | 40 C |
| 95383 | 241 | $4.15 | 40 C |
| 95310 | 190 | $4.08 | 40 C |
| 95346 | 70 | $3.61 | 42 C |
| 95309 | 20 | $4.45 | 38 D |
| 95375 | 7 | $7.19 | 28 F |
| 95347 | 6 | $3.79 | 41 C |
| 95364 | 6 | $4.03 | 39 C |
| 95335 | 5 | $3.20 | 43 C |
| 95305 | 2 | $5.53 | 39 C |