LEWISTON NIAGARA

Operating

Hydro 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

See it on the map

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.

1.1 of 5Modeled catastrophe exposure
LowExposure band
Riverine floodingLeading peril
Relatively ModerateFEMA county risk rating

Niagara County hazard ratings

PerilFEMA ratingNational percentilePeril scoreEvents per year
Riverine floodingRelatively Moderate68th3.7 of 51.3
Ice stormRelatively High66th3.6 of 53.0
Strong windRelatively Moderate40th2.6 of 50.97
HurricaneVery Low34th2.3 of 50.03
EarthquakeRelatively Low32nd2.3 of 5<0.01
Winter weatherRelatively Low20th1.8 of 518.9
TornadoRelatively Low14th1.5 of 50.07
HailRelatively Low13th1.5 of 50.51
Coastal floodingVery Low10th1.4 of 50.01
LightningRelatively Moderate6th1.3 of 527.6
Heat waveRelatively Low5th1.2 of 52.9
WildfireVery Low0th1.0 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.