GLENWOOD
OperatingNatural Gas power plant
- Capacity
- 110 MW
- Primary fuel
- Natural Gas
- County
- Nassau County
- Operator
- NATIONAL GRID GENERATION LLC
- Status
- Operating
- Commissioned
- 1972
- EIA plant ID
- 2514
- Generators
- 2
- Net generation (2024)
- 2.6 GWh
- Capacity factor (2024, EIA nameplate)
- 0.3%
- Data vintage
- EIA-860 2024 final; EIA-923 2022-2024 final
- Coordinates
- 40.8272, -73.6475
GLENWOOD, a 110 MW Natural Gas power plant in Nassau County, New York. Operated by NATIONAL GRID GENERATION LLC, commissioned 1972.
How GLENWOOD compares
With 110 MW of capacity, GLENWOOD ranks 47th among the 320 operating power plants Bywatts maps in New York and 27th of the 68 operating Natural Gas plants in the state. It accounts for about 0.6% of New York's operating Natural Gas capacity and 0.3% of all operating capacity in the state. Nationally it is the 657th-largest of the 1,185 operating Natural Gas plants in the database. Commissioned in 1972, it is older than 58% of the 312 operating New York plants with a recorded commissioning year. Its operator, NATIONAL GRID GENERATION LLC, runs 12 operating plants in New York totaling 3,945 MW. It shares Nassau County with 9 other operating plants, including E F BARRETT and BETHPAGE POWER PLANT.
Under the same EIA plant code, EIA-860 lists 2 generators at the site with 110 MW of nameplate capacity. Net generation was 2.6 GWh in 2024 (a 0.3% capacity factor).
Grid neighborhood
The nearest named substation is NEWBRIDGE ROAD (345 kV), about 8.6 miles away; the closest transmission line found within 10 miles is a 345 kV line, about 0.4 miles away. Another 52 operating power plants totaling 13,951 MW sit within 25 miles; the largest is RAVENSWOOD (2,625 MW, Natural Gas). Within 50 miles are 30 mapped data centers; the nearest is 1025Connect in Westbury, about 6.8 miles away.
Computed by Bywatts from HIFLD power plant, substation and transmission line records, EIA-860/923 survey data and PeeringDB data center locations; distances are straight-line. Sources and methodology
Weather peril exposure
GLENWOOD is a 110 MW natural gas power plant in Nassau County, NY, operated by NATIONAL GRID GENERATION LLC, commissioned in 1972. Nassau County carries low modeled catastrophe exposure in the FEMA National Risk Index, scoring 1.4 of 5 at the 10th national percentile. Coastal flooding is the leading peril, rated Very High by FEMA at the 77th percentile.
The Bywatts loss layer is calibrated to solar PV hardware, so it is not applied to a natural gas plant. The ratings below are the FEMA National Risk Index county hazard ratings for this location.
Nassau County hazard ratings
| Peril | FEMA rating | National percentile | Peril score | Events per year |
|---|---|---|---|---|
| Coastal flooding | Very High | 77th | 4.1 of 5 | 3.8 |
| Hurricane | Relatively High | 76th | 4.1 of 5 | 0.17 |
| Earthquake | Relatively Moderate | 75th | 4.0 of 5 | <0.01 |
| Ice storm | Very High | 63rd | 3.5 of 5 | 0.72 |
| Wildfire | Very Low | 30th | 2.2 of 5 | <0.01 |
| Winter weather | Very High | 25th | 2.0 of 5 | 9.8 |
| Riverine flooding | Relatively High | 18th | 1.7 of 5 | 3.3 |
| Tornado | Relatively Moderate | 13th | 1.5 of 5 | 0.13 |
| Lightning | Very High | 13th | 1.5 of 5 | 27.3 |
| Strong wind | Relatively High | 11th | 1.4 of 5 | 4.9 |
| Heat wave | Relatively Moderate | 8th | 1.3 of 5 | 5.8 |
| Hail | Very Low | 1st | 1.1 of 5 | 1.7 |
Model hail, wind and flood exposure for Nassau 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.