San Luis Obispo County, CA solar installation & market data
Updated May 27, 2026 By The SolarDNA Data Team
San Luis Obispo County has 30,351 solar installations across 28 zip codes at a median installed cost of $4.25/W, installations down 6.9% over the trailing twelve months, and an installs-weighted Market Score of 46.
Active installations
30,351
Zip markets
28
Median cost
$4.25/W
12-mo growth
▼ 6.9%
Installers active
697
County Market Score
Great · installs-weighted across 28 zips
Best zip in San Luis Obispo County scores higher than 97% of U.S. zip markets.
Versus California
How San Luis Obispo County compares with the state
Installed cost
$0.01/W below
state median $4.26/W
Market score
46 vs 53
California scores 53
Share of state installs
1.34%
of 2.3M tracked statewide
Battery attach
12.7%
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: 1,731–2,115 installs (midpoint 1,923)
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 Luis Obispo County by year
1,992 installs in the trailing twelve months vs 2,139 before
Installations by year
Median installed cost, $/W DC by year
Installer comp set
Who installs in San Luis Obispo County
Summed across every zip in the county
| # | Installer | Installs | 12-mo | Zips | $/W |
|---|---|---|---|---|---|
| 1 | SUNRUN | 8,464 | 677 | 22 | $4.24 |
| 2 | TESLA | 4,454 | 44 | 20 | $5.03 |
| 3 | A M SUN SOLAR | 3,489 | 70 | 21 | $3.81 |
| 4 | SOLARPONICS | 2,283 | 122 | 24 | $4.18 |
| 5 | PHOTON BROTHERS | 758 | 86 | 20 | $4.71 |
| 6 | REC SOLAR COMMERCIAL | 689 | 0 | 17 | $6.76 |
| 7 | SUNPOWER | 418 | 0 | 13 | $4.35 |
| 8 | CALSUN ELECTRIC SYSTEMS | 352 | 36 | 16 | $3.12 |
| 9 | WICKS SOLAR | 319 | 10 | 18 | $3.93 |
| 10 | ELECTRICRAFT | 289 | 8 | 18 | $3.78 |
| 11 | REC SOLAR | 289 | 0 | 18 | $6.29 |
| 12 | SUNGEVITY | 271 | 0 | 17 | $3.94 |
| 13 | BLAND COMPANY | 255 | 1 | 16 | $3.71 |
| 14 | BRIGHT OPS | 241 | 113 | 17 | $5.39 |
| 15 | CITADEL ROOFING AND SOLAR | 234 | 45 | 5 | $2.81 |
| 16 | ILUM SOLAR | 233 | 0 | 18 | $4.40 |
| 17 | CAL PASO SOLAR ELECTRIC | 220 | 4 | 12 | $3.83 |
| 18 | AXIOM 360 | 220 | 54 | 16 | $4.38 |
| 19 | RICHARD HEATH ASSOCIATES | 176 | 0 | 6 | — |
| 20 | CALSUN ELECTRIC SOLAR SYSTEMS | 162 | 0 | 11 | $2.91 |
| 21 | SUNWORK RENEWABLE ENERGY | 142 | 0 | 14 | $2.60 |
| 22 | SLO CIRCUIT SOLAR | 141 | 0 | 15 | $3.76 |
| 23 | ESP CONTRACTING | 140 | 2 | 18 | $3.90 |
| 24 | FREEDOM FOREVER | 126 | 11 | 17 | $4.58 |
| 25 | TRAVIS ROBSON CONSTRUCTION | 122 | 0 | 14 | $3.72 |
Zip markets
Zips in San Luis Obispo County
Ranked by installations · click for the zip market
| Zip | Installs | $/W | Score |
|---|---|---|---|
| 93446 | 6,223 | $3.98 | 47 B |
| 93422 | 3,864 | $4.21 | 42 C |
| 93420 | 3,606 | $4.26 | 44 C |
| 93401 | 3,449 | $4.25 | 53 A |
| 93444 | 3,272 | $4.73 | 46 B |
| 93405 | 1,878 | $4.25 | 48 B |
| 93465 | 1,585 | $4.00 | 54 A |
| 93402 | 1,563 | $4.46 | 42 C |
| 93451 | 737 | $4.16 | 43 C |
| 93449 | 667 | $4.12 | 42 C |
| 93433 | 662 | $4.64 | 40 C |
| 93442 | 655 | $4.54 | 53 A |
| 93428 | 525 | $4.39 | 40 C |
| 93453 | 346 | $4.06 | 41 C |
| 93445 | 326 | $4.42 | 39 C |
| 93430 | 321 | $4.23 | 40 C |
| 93432 | 304 | $4.12 | 41 C |
| 93461 | 205 | $4.39 | 39 C |
| 93424 | 111 | $4.40 | 38 D |
| 93452 | 13 | $3.38 | 43 C |
| 93447 | 11 | $4.27 | 38 D |
| 93435 | 8 | $4.98 | 35 D |
| 93407 | 7 | $1.85 | 48 B |
| 93423 | 6 | $8.02 | 28 F |
| 93421 | 3 | $3.75 | 41 C |
| 93412 | 2 | $9.55 | 28 F |
| 93448 | 1 | — | 38 D |
| 93403 | 1 | $4.23 | 39 D |