WADING RIVER
OperatingOil power plant
- Capacity
- 239 MW
- Primary fuel
- Oil
- County
- Suffolk County
- Operator
- NATIONAL GRID GENERATION LLC
- Status
- Operating
- Commissioned
- 1989
- EIA plant ID
- 7146
- Generators
- 3
- Technology
- Petroleum Liquids
- Net generation (2024)
- 6.1 GWh
- Capacity factor (2024, EIA nameplate)
- 0.3%
- Data vintage
- EIA-860 2024 final; EIA-923 2022-2024 final
- Coordinates
- 40.9569, -72.8774
WADING RIVER, a 239 MW Oil power plant in Suffolk County, New York. Operated by NATIONAL GRID GENERATION LLC, commissioned 1989.
How WADING RIVER compares
With 239 MW of capacity, WADING RIVER ranks 35th among the 320 operating power plants Bywatts maps in New York and 4th of the 20 operating Oil plants in the state. It accounts for about 5.4% of New York's operating Oil capacity and 0.6% of all operating capacity in the state. Nationally it is the 21st-largest of the 544 operating Oil plants in the database. Commissioned in 1989, it is newer than 59% 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 Suffolk County with 24 other operating plants, including NORTHPORT and HOLTSVILLE.
EIA-860 lists 3 generators at the site with 239 MW of nameplate capacity, all petroleum liquids technology. Net generation was 6.1 GWh in 2024 (a 0.3% capacity factor).
Grid neighborhood
The nearest named substation is MILVON, about 20.6 miles away; the closest transmission line found within 10 miles is a 138 kV line owned by LONG ISLAND POWER AUTHORITY, under 0.1 miles away. Another 23 operating power plants totaling 6,462 MW sit within 25 miles; the largest is NORTHPORT (1,564 MW, Natural Gas). Within 50 miles are 4 mapped data centers; the nearest is Crown Castle Brentwood (1650 Islip) in Brentwood, about 21.5 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
WADING RIVER is a 239 MW oil power plant in Suffolk County, NY, operated by NATIONAL GRID GENERATION LLC, commissioned in 1989. Suffolk County carries low modeled catastrophe exposure in the FEMA National Risk Index, scoring 1.6 of 5 at the 15th national percentile. Coastal flooding is the leading peril, rated Very High by FEMA at the 86th percentile.
The Bywatts loss layer is calibrated to solar PV hardware, so it is not applied to an oil plant. The ratings below are the FEMA National Risk Index county hazard ratings for this location.
Suffolk County hazard ratings
| Peril | FEMA rating | National percentile | Peril score | Events per year |
|---|---|---|---|---|
| Coastal flooding | Very High | 86th | 4.4 of 5 | 3.8 |
| Hurricane | Relatively High | 78th | 4.1 of 5 | 0.20 |
| Earthquake | Relatively Moderate | 65th | 3.6 of 5 | <0.01 |
| Wildfire | Relatively Low | 34th | 2.3 of 5 | <0.01 |
| Ice storm | Very High | 28th | 2.1 of 5 | 0.67 |
| Winter weather | Very High | 19th | 1.7 of 5 | 10.3 |
| Tornado | Relatively Moderate | 12th | 1.5 of 5 | 0.47 |
| Lightning | Very High | 9th | 1.4 of 5 | 23.8 |
| Riverine flooding | Relatively High | 9th | 1.4 of 5 | 3.5 |
| Strong wind | Relatively High | 9th | 1.3 of 5 | 3.2 |
| Heat wave | Relatively Moderate | 6th | 1.3 of 5 | 3.9 |
| Hail | Relatively Low | 3rd | 1.1 of 5 | 1.3 |
Model hail, wind and flood exposure for Suffolk 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.