GMMGREENIDGE LLC
OperatingCoal power plant
- Capacity
- 113 MW
- Primary fuel
- Coal
- County
- Yates County
- Operator
- GMM HOLDINGS 1 LLC
- Status
- Operating
- Commissioned
- 1953
- EIA plant ID
- 2527
- Generators
- 1
- Net generation (2024)
- 674 GWh
- Capacity factor (2024, EIA nameplate)
- 68%
- Data vintage
- EIA-860 2024 final; EIA-923 2022-2024 final
- Coordinates
- 42.6794, -76.9483
GMMGREENIDGE LLC, a 113 MW Coal power plant in Yates County, New York. Operated by GMM HOLDINGS 1 LLC, commissioned 1953.
How GMMGREENIDGE LLC compares
With 113 MW of capacity, GMMGREENIDGE LLC ranks 45th among the 320 operating power plants Bywatts maps in New York and 3rd of the 4 operating Coal plants in the state. It accounts for about 13% of New York's operating Coal capacity and 0.3% of all operating capacity in the state. Nationally it is the 227th-largest of the 324 operating Coal plants in the database. Commissioned in 1953, it is older than 72% of the 312 operating New York plants with a recorded commissioning year.
Under the same EIA plant code, EIA-860 lists 1 generator at the site with 112 MW of nameplate capacity. Net generation was 674 GWh in 2024 (a 68% capacity factor), up 24% from 2022.
Grid neighborhood
The closest transmission line found within 10 miles is a 115 kV line owned by NEW YORK STATE ELEC & GAS CORP, under 0.1 miles away. Another 3 operating power plants totaling 27 MW sit within 25 miles; the largest is SENECA ENERGY (18 MW, Biomass).
Computed by Bywatts from HIFLD power plant and transmission line records and EIA-860/923 survey data; distances are straight-line. Sources and methodology
Weather peril exposure
GMMGREENIDGE LLC is a 113 MW coal power plant in Yates County, NY, operated by GMM HOLDINGS 1 LLC, commissioned in 1953. Yates County carries low modeled catastrophe exposure in the FEMA National Risk Index, scoring 1.2 of 5 at the 5th national percentile. Riverine flooding is the leading peril, rated Relatively Low by FEMA at the 85th percentile.
The Bywatts loss layer is calibrated to solar PV hardware, so it is not applied to a coal plant. The ratings below are the FEMA National Risk Index county hazard ratings for this location.
Yates County hazard ratings
| Peril | FEMA rating | National percentile | Peril score | Events per year |
|---|---|---|---|---|
| Riverine flooding | Relatively Low | 85th | 4.4 of 5 | 0.71 |
| Ice storm | Relatively Moderate | 67th | 3.7 of 5 | 0.32 |
| Hurricane | Relatively Low | 61st | 3.4 of 5 | 0.02 |
| Strong wind | Relatively Low | 32nd | 2.3 of 5 | 1.6 |
| Winter weather | Very Low | 23rd | 1.9 of 5 | 13.3 |
| Earthquake | Very Low | 19th | 1.8 of 5 | <0.01 |
| Tornado | Relatively Low | 16th | 1.7 of 5 | 0.06 |
| Hail | Relatively Low | 13th | 1.5 of 5 | 1.9 |
| Wildfire | Very Low | 7th | 1.3 of 5 | <0.01 |
| Heat wave | Very Low | 5th | 1.2 of 5 | 3.1 |
| Lightning | Relatively Low | 3rd | 1.1 of 5 | 29.7 |
Perils not assessed in Yates County
These perils carry no usable National Risk Index figure for this county, so they are excluded from the scoring rather than scored zero. A zero would claim the peril was assessed and found benign.
| Peril | Why it is not scored |
|---|---|
| Coastal flooding | FEMA rating is "Not Applicable" for this county |
Model hail, wind and flood exposure for Yates County in the weather risk calculator
Ratings are the FEMA National Risk Index county hazard ratings; the peril score is a Bywatts transform of the FEMA national percentile. Full data sources and the solar vulnerability methodology are in the weather risk calculator.
Modeled estimate for screening and negotiation. Built from FEMA National Risk Index county hazard data and a solar vulnerability layer documented above. Not a quote, a binder, or actuarial advice, and not a substitute for a carrier's own model. Hazard data: FEMA National Risk Index December 2025, synced 2026-07-24. Resolution is county level, not site level.