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Rocky River Pumped-storage Hydroelectric Plant

Location: Hartford, CT, USA
Date: 1929
Creator(s): Connecticut Light & Power Company

The Connecticut Light & Power Company pioneered the use of pumped storage in the United States at this hydroelectric station. First operated in 1929, the Rocky River Plant had two reversible pumps that somewhat resemble large hydroelectric turbines. This permitted significant improvements in the system efficiency of the company's network of hydroelectric and thermal-electric power generating plants. Water is pumped uphill through a penstock and stored in Lake Candlewood. When demand reaches a peak, water is released through the same penstock, and the motors driving the pumps reverse to become generators to produce electricity. The original penstock, built in 1927, was restored in 1963.

Tags: Era: 1920-1929
Innovation designated by:
Rocky River Pumped-storage Hydroelectric Plant
Courtesy ASME
Rocky River Pumped-storage Hydroelectric Plant
Rocky River Station
41 Park Lane Road
Hartford, CT, USA

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