Williamson, NY solar installation & market data
Updated February 11, 2026Provisional score · under 500 installs By The SolarDNA Data Team
Williamson has 79 solar installations across 1 zip code at a median installed cost of $3.32/W, recent growth not yet measurable, and an installs-weighted Market Score of 52.
Active installations
79
Zip markets
1
Median cost
$3.32/W
12-mo growth
—
Installers active
12
City Market Score
Excellent · installs-weighted across 1 zips
Best zip in Williamson scores higher than 94% of U.S. zip markets.
Versus New York
How Williamson compares with the state
Installed cost
$0.84/W below
state median $4.16/W
Market score
52 vs 59
New York scores 59
Share of state installs
0.04%
of 187.3K tracked statewide
Battery attach
1.4%
state 2.1%
Statewide momentum
▲ 25.2%
residential solar added in New York, 12 months through Jul 2026
Statewide market
274.1K systems
6.4% of homes · utility-reported through Jul 2026
Growth & pricing
Williamson by year
5 installs in the trailing twelve months vs 3 before
Installations by year
Median installed cost, $/W DC by year
Installer comp set
Who installs in Williamson
Summed across every zip in the city
| # | Installer | Installs | 12-mo | Zips | $/W |
|---|---|---|---|---|---|
| 1 | SUSTAINABLE ENERGY DEVELOPMENTS | 30 | 0 | 1 | $3.25 |
| 2 | 3RD ROC SOLAR | 14 | 0 | 1 | $3.31 |
| 3 | LTHS | 7 | 0 | 1 | $5.07 |
| 4 | RENEWABLE ROCHESTER | 6 | 0 | 1 | $3.99 |
| 5 | HALCYON | 3 | 0 | 1 | $3.44 |
| 6 | OCONNELL ELECTRIC | 3 | 0 | 1 | $3.25 |
| 7 | SOLAR LIBERTY ENERGY SYSTEMS | 3 | 0 | 1 | $3.23 |
| 8 | PLUGPV | 2 | 2 | 1 | $4.20 |
| 9 | EMPIRE SOLAR SOLUTIONS | 1 | 1 | 1 | $4.40 |
| 10 | SOLAR LIBERTY | 1 | 1 | 1 | $3.99 |
| 11 | ABUNDANT SOLAR POWER | 1 | 0 | 1 | $1.20 |
| 12 | ARISTA POWER | 1 | 0 | 1 | $4.16 |
Zip markets
Zips in Williamson
Ranked by installations · click for the zip market
| Zip | Installs | $/W | Score |
|---|---|---|---|
| 14589 | 79 | $3.32 | 52 A |