Derby, NY solar installation & market data
Updated December 8, 2025Provisional score · under 500 installs By The SolarDNA Data Team
Derby has 23 solar installations across 1 zip code at a median installed cost of $3.45/W, recent growth not yet measurable, and an installs-weighted Market Score of 51.
Active installations
23
Zip markets
1
Median cost
$3.45/W
12-mo growth
—
Installers active
10
City Market Score
Excellent · installs-weighted across 1 zips
Best zip in Derby scores higher than 91% of U.S. zip markets.
Versus New York
How Derby compares with the state
Installed cost
$0.71/W below
state median $4.16/W
Market score
51 vs 59
New York scores 59
Share of state installs
0.01%
of 187.3K tracked statewide
Battery attach
0.0%
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
Derby by year
4 installs in the trailing twelve months vs 1 before
Installations by year
Median installed cost, $/W DC by year
Installer comp set
Who installs in Derby
Summed across every zip in the city
| # | Installer | Installs | 12-mo | Zips | $/W |
|---|---|---|---|---|---|
| 1 | SOLAR LIBERTY ENERGY SYSTEMS | 7 | 0 | 1 | $5.50 |
| 2 | CIR ELECTRIC CONSTRUCTION | 4 | 0 | 1 | $3.25 |
| 3 | CATALYZE HOLDINGS | 2 | 2 | 1 | $1.45 |
| 4 | DIRECT ENERGY SOLAR | 2 | 0 | 1 | $3.89 |
| 5 | FREEDOM SOLAR POWER TX | 2 | 0 | 1 | $3.25 |
| 6 | NRG RESIDENTIAL SOLAR SOLUTIONS | 2 | 0 | 1 | $3.02 |
| 7 | EMPIRE SOLAR SOLUTIONS | 1 | 1 | 1 | $4.07 |
| 8 | SOLAR LIBERTY | 1 | 1 | 1 | $4.29 |
| 9 | BUFFALO SOLAR | 1 | 0 | 1 | $2.06 |
| 10 | SIGORA SOLAR | 1 | 0 | 1 | $4.06 |
Zip markets
Zips in Derby
Ranked by installations · click for the zip market
| Zip | Installs | $/W | Score |
|---|---|---|---|
| 14047 | 23 | $3.45 | 51 A |