LEWISTON NIAGARA
OperatingHydro power plant
- Capacity
- 240 MW
- Primary fuel
- Hydro
- County
- Niagara County
- Operator
- NEW YORK POWER AUTHORITY
- Status
- Operating
- Commissioned
- 1961
- EIA plant ID
- 2692
- Generators
- 12
- Technology
- Hydroelectric Pumped Storage
- Net generation (2024)
- -238 GWh
- Data vintage
- EIA-860 2024 final; EIA-923 2022-2024 final
- Coordinates
- 43.1415, -79.0219
LEWISTON NIAGARA, a 240 MW Hydro power plant in Niagara County, New York. Operated by NEW YORK POWER AUTHORITY, commissioned 1961.
How LEWISTON NIAGARA compares
With 240 MW of capacity, LEWISTON NIAGARA ranks 33rd among the 320 operating power plants Bywatts maps in New York and 4th of the 153 operating Hydro plants in the state. It accounts for about 4.1% of New York's operating Hydro capacity and 0.6% of all operating capacity in the state. Nationally it is the 77th-largest of the 1,243 operating Hydro plants in the database. Commissioned in 1961, it is older than 65% of the 312 operating New York plants with a recorded commissioning year. Its operator, NEW YORK POWER AUTHORITY, runs 19 operating plants in New York totaling 5,870 MW. It shares Niagara County with 7 other operating plants, including ROBERT MOSES NIAGARA and LOCKPORT ENERGY ASSOCIATES LP.
EIA-860 lists 12 generators at the site with 240 MW of nameplate capacity, all hydroelectric pumped storage technology. The plant was a net consumer of electricity in 2024 (-238 GWh), which is typical of pumped storage. Its generators came online between 1961 and 1962.
Grid neighborhood
The nearest named substation is NIAGARA (345 kV), about 0.3 miles away; the closest transmission line found within 10 miles is a 345 kV line owned by NIAGARA MOHAWK POWER CORP., under 0.1 miles away. Another 10 operating power plants totaling 2,866 MW sit within 25 miles; the largest is ROBERT MOSES NIAGARA (2,429 MW, Hydro). Within 50 miles is one mapped data center, ixColo in Buffalo, about 19.3 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
LEWISTON NIAGARA is a 240 MW hydro power plant in Niagara County, NY, operated by NEW YORK POWER AUTHORITY, commissioned in 1961. Niagara County carries low modeled catastrophe exposure in the FEMA National Risk Index, scoring 1.1 of 5 at the 2nd national percentile. Riverine flooding is the leading peril, rated Relatively Moderate by FEMA at the 68th percentile.
The Bywatts loss layer is calibrated to solar PV hardware, so it is not applied to a hydro plant. The ratings below are the FEMA National Risk Index county hazard ratings for this location.
Niagara County hazard ratings
| Peril | FEMA rating | National percentile | Peril score | Events per year |
|---|---|---|---|---|
| Riverine flooding | Relatively Moderate | 68th | 3.7 of 5 | 1.3 |
| Ice storm | Relatively High | 66th | 3.6 of 5 | 3.0 |
| Strong wind | Relatively Moderate | 40th | 2.6 of 5 | 0.97 |
| Hurricane | Very Low | 34th | 2.3 of 5 | 0.03 |
| Earthquake | Relatively Low | 32nd | 2.3 of 5 | <0.01 |
| Winter weather | Relatively Low | 20th | 1.8 of 5 | 18.9 |
| Tornado | Relatively Low | 14th | 1.5 of 5 | 0.07 |
| Hail | Relatively Low | 13th | 1.5 of 5 | 0.51 |
| Coastal flooding | Very Low | 10th | 1.4 of 5 | 0.01 |
| Lightning | Relatively Moderate | 6th | 1.3 of 5 | 27.6 |
| Heat wave | Relatively Low | 5th | 1.2 of 5 | 2.9 |
| Wildfire | Very Low | 0th | 1.0 of 5 | <0.01 |
Model hail, wind and flood exposure for Niagara 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.