Department of Energy Logo
Sandia National Labs Logo

Lewiston Pump-Generating Plant

Technology Type Open-loop Pumped Hydro Storage
Rated Power 240000 kW
Duration at Rated Power (HH:MM) 0:15.00 / 0.00
URL More about Lewiston Pump-Generating Plant
The Niagara project, located about 4 1/2 miles downstream from the Falls, consists of two main facilities: the Robert Moses Niagara Power Plant, with 13 turbines, and the Lewiston Pump-Generating Plant, with 12 pump-turbines. In between the two plants is a forebay capable of holding about 740 million gallons of water; behind the Lewiston plant, a 1,900-acre, 22 billion gallon reservoir holds additional supplies of this liquid fuel. Water is diverted from the Niagara River—up to 375,000 gallons a second—and conveyed through conduits under the City of Niagara Falls to Lewiston. From there, water flowing through the Robert Moses plant spins turbines that power generators, converting this mechanical energy into electrical energy. At night, when electricity demand is low, the Lewiston units operate as pumps, transporting water from the forebay up to the plant's reservoir. During the daytime, when electricity use peaks, the Lewiston pumps are reversed and become generators, similar to those at the Moses plant. In this way, the water can be used to produce electricity twice, increasing production and efficiency. To balance the need for power with a desire to preserve the beauty of Niagara Falls, the United States and Canada signed a treaty in 1950 that regulates the amount of water diverted for hydroelectricity production. On average, more than 200,000 cubic feet per second (cfs), or 1.5 million gallons of water a second, flow from Lake Erie into the Niagara River. The 1950 pact requires that at least 100,000 cfs of water spill over the Falls during the daylight hours in the tourist season, April through October. This flow may be cut in half at night during this period and at all times the rest of the year. *** Update on progress of facility upgrade:
This data has been validated by project staff through a review of publicly available information about the project, and verified by the project owner. Information is accurate as of 2016-04-29.
Project Status
Status Operational
Commissioning On 28.01.1961
Project Includes Multiple Systems No

5477 Military Rd.
Lewiston, New York
United States

Utility New York Power Authority (NYPA)
Utility Type Public Owned
Paired Grid Resource Transmission
Project Includes Multiple Systems No
Ownership & Value Chain Partners
Ownership Model Utility-Owned
Equity Owner 1 New York Power Authority (NYPA)
Equity Owner 1 Percent 100%
Energy Storage Technology Provider Hitachi
Cost & Performance
Performance Performance metrics not available.
Service Use Case Electric Energy Time Shift
Electric Supply Capacity
Electric Supply Reserve Capacity - Spinning
Export Data PDF

Print to PDF

You may use your computer system's built-in dialog to obtain a PDF of this page through the Print menu. Print this page, then choose Print to PDF or Save to PDF near the bottom of the dialog box.

Print and Save to PDF

Export Data

Thank you for using the Global Energy Storage Database. Please provide your e-mail address to download the data. Upon filling out the form you will receive an email with a link to the full data set you requested.

Suggest Update

Thank you for using the Global Energy Storage Database. Please provide the following information to help us research your update to this content.