Tompkins County, NY solar installation & market data
Updated July 29, 2026 By The SolarDNA Data Team
Tompkins County has 1,771 solar installations across 11 zip codes at a median installed cost of $3.86/W, installations up 29.2% over the trailing twelve months, and an installs-weighted Market Score of 52.
Active installations
1,771
Zip markets
11
Median cost
$3.86/W
12-mo growth
▲ 29.2%
Installers active
64
County Market Score
Excellent · installs-weighted across 11 zips
Best zip in Tompkins County scores higher than 99% of U.S. zip markets.
Versus New York
How Tompkins County compares with the state
Installed cost
$0.30/W below
state median $4.16/W
Market score
52 vs 59
New York scores 59
Share of state installs
0.95%
of 187.3K tracked statewide
Battery attach
0.9%
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
Next-12-month outlook: 82–110 installs (midpoint 96)
Trailing-12-month installs carried forward at half the observed growth rate (capped at ±30%), with a ±15% band. Not a forecast of permits or policy.
Growth & pricing
Tompkins County by year
84 installs in the trailing twelve months vs 65 before
Installations by year
Median installed cost, $/W DC by year
Installer comp set
Who installs in Tompkins County
Summed across every zip in the county
| # | Installer | Installs | 12-mo | Zips | $/W |
|---|---|---|---|---|---|
| 1 | RENOVUS ENERGY | 674 | 35 | 9 | $3.44 |
| 2 | TAITEM ENGINEERING | 220 | 0 | 9 | $4.04 |
| 3 | SOLAR LIBERTY ENERGY SYSTEMS | 164 | 0 | 8 | $4.17 |
| 4 | DIRECT ENERGY SOLAR | 119 | 0 | 10 | $3.88 |
| 5 | HALCYON | 95 | 0 | 8 | $4.09 |
| 6 | MY SOLAR | 93 | 0 | 8 | $4.04 |
| 7 | FINGER LAKES RENEWABLE ENERGY | 88 | 1 | 7 | $7.01 |
| 8 | SUNGEVITY | 53 | 0 | 8 | $4.30 |
| 9 | BASHING PANELS | 36 | 0 | 8 | $2.82 |
| 10 | HALCO RENEWABLE ENERGY DBA FOR HALCYON | 17 | 15 | 6 | $3.49 |
| 11 | EARTHSPONSE | 15 | 0 | 6 | $6.05 |
| 12 | PLUGPV | 14 | 3 | 5 | $4.10 |
| 13 | SUNGINEER SOLAR DBA FOR BASHING PANELS | 14 | 9 | 4 | $2.71 |
| 14 | SUNPOWER | 10 | 0 | 3 | $5.24 |
| 15 | FINLO SOLAR | 9 | 0 | 2 | $6.93 |
| 16 | 3RD ROC SOLAR | 6 | 0 | 5 | $3.06 |
| 17 | NYS ESSENTIAL POWER | 6 | 6 | 5 | $3.98 |
| 18 | SUSTAINABLE ENERGY DEVELOPMENTS | 6 | 0 | 2 | $1.70 |
| 19 | NRG RESIDENTIAL SOLAR SOLUTIONS | 5 | 0 | 4 | $3.09 |
| 20 | HAYES ELECTRIC SERVICE | 5 | 0 | 1 | $4.53 |
| 21 | UPSTATE ENERGY SOLUTIONS | 5 | 0 | 1 | $6.39 |
| 22 | ALTERNATIVE POWER SOLUTIONS NY | 5 | 0 | 2 | $3.53 |
| 23 | SOLAR LIBERTY | 5 | 5 | 5 | $2.86 |
| 24 | PRIME ENERGY SOLUTIONS | 4 | 0 | 4 | $7.38 |
| 25 | APEX ENERGY TEK | 4 | 0 | 4 | $3.75 |