Williams, CA solar installation & market data
Updated April 24, 2026 By The SolarDNA Data Team
Williams has 718 solar installations across 1 zip code at a median installed cost of $4.37/W, recent growth not yet measurable, and an installs-weighted Market Score of 41.
Active installations
718
Zip markets
1
Median cost
$4.37/W
12-mo growth
—
Installers active
12
City Market Score
Good · installs-weighted across 1 zips
Best zip in Williams scores higher than 45% of U.S. zip markets.
Versus California
How Williams compares with the state
Installed cost
$0.11/W above
state median $4.26/W
Market score
41 vs 53
California scores 53
Share of state installs
0.03%
of 2.3M tracked statewide
Battery attach
5.4%
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
Growth & pricing
Williams by year
38 installs in the trailing twelve months vs 41 before
Installations by year
Median installed cost, $/W DC by year
Installer comp set
Who installs in Williams
Summed across every zip in the city
| # | Installer | Installs | 12-mo | Zips | $/W |
|---|---|---|---|---|---|
| 1 | SUNRUN | 140 | 16 | 1 | $4.45 |
| 2 | TESLA | 65 | 0 | 1 | $5.12 |
| 3 | NORTH STATE SOLAR | 42 | 0 | 1 | $3.77 |
| 4 | INTITEK SYSTEMS | 41 | 0 | 1 | $7.29 |
| 5 | PREMIER SOLAR SOLUTIONS | 41 | 0 | 1 | $3.19 |
| 6 | FREEDOM FOREVER | 29 | 1 | 1 | $3.69 |
| 7 | SUNWORKS | 23 | 0 | 1 | $2.65 |
| 8 | OHM SOLAR SOLUTIONS | 17 | 1 | 1 | $5.06 |
| 9 | BRIGHT OPS | 15 | 0 | 1 | $4.68 |
| 10 | REVOLVE SOLAR | 14 | 0 | 1 | $4.33 |
| 11 | NORTH STATE ENERGY SOLAR | 13 | 0 | 1 | $3.22 |
| 12 | CHICO ELECTRIC | 12 | 2 | 1 | $3.05 |
Zip markets
Zips in Williams
Ranked by installations · click for the zip market
| Zip | Installs | $/W | Score |
|---|---|---|---|
| 95987 | 718 | $4.37 | 41 C |