Hydroelectric Plants in Pennsylvania
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Conemaugh River Lake Dam Location: PA Operator: National Renewable Resources Configuration: 2 X 7 MW Kaplan Operation: 1989 T/G supplier: Kvaerner EPC: Morrison Knudsen, Kiewit Quick facts: Conemaugh River Lake is a part of a system of nine Corps of Engineers' reservoirs in the Allegheny River basin. The dam is operated in conjunction with seven other projects to control adverse acid mine drainage impacts on the lower Allegheny River.
Photograph courtesy of USACE
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Holtwood Location: PA Operator: PPL Generation LLC Configuration: 8 X 10 MW, 2 X 12 MW Operation: 1910-1924 T/G supplier: WH Quick facts: For a time, this dam -- 2,392ft long and 55ft high -- was the longest in the USA and the plant the largest hydroelectric power station in the country. In 1987, ASME designated the first Kingsbury thrust bearing at Holtwood as an International Historic Mechanical Engineering Landmark. The Holtwood fish lifts are among the largest in the nation. Behind the dam is 2,400ac Lake Aldred, a popular boating and recreation area. PPL manages more than 5,000ac of nearby land for soil, water and wildlife habitat preservation. Photograph courtesy of PPL Corp |
Lock and Dam 8 Location: PA Operator: Sithe Energies Configuration: 2 X 6.5 MW Kaplan Operation: 1990 T/G supplier: Voest EPC: Ebasco Quick facts: Lock and Dam 8 on the Allegheny River was built from 1928-1931. A small hydro plant (shown under construction) was added 50 years later. Photograph by Bill Lukitsch and courtesy of USACE
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Lock and Dam 9 Location: PA Operator: Sithe Energies Configuration: 2 X 8.7 MW Kaplan Operation: 1990 T/G supplier: Voest EPC: Ebasco Quick facts: Lock and Dam 9 on the Allegheny Riverwas built from 1935-38. A small hydro plant was added 50 years later.
Photograph by
Bill Lukitsch and courtesy of USACE |
Safe Harbor Location: PA Operator: Safe Harbor Water Power Corp (SHWP) Configuration: 7 X 33 MW Kaplan, 5 X 37.5 MW mixed flow, 2 X 2 MW Francis Operation: 1931-1986 T/G supplier: AC, GE, WH EPC: Chas T Main (Phase II) Quick facts: SHWP was incorporated in Jan 1930 by Pennsylvania Water & Power Co (PWP) with one third ownership and Consolidated Gas Electric Light and Power Co, the predecessor of the present Baltimore Gas and Electric Co, with two-thirds. Construction got underway in Nov 1929 and first power was in Dec 1931 after 20mos of work in the Susquehanna River. The gravity dam is 75ft high and 4,869ft long (incl powerhouse). Originally, seven generating units were installed at a cost of $34mn. In 1955, PWP was merged into Pennsylvania Power & Light Co. In 1985/86, five additional units were installed at a total cost of $125mn. In Jun 1993, Safe Harbor signed an agreement to construct a fish passage facility to allow American shad to pass up-river. This was designed by Stone and Webster and built by Cianbro. The $17mn facility was completed in Sep 1996. Photograph courtesy of Power |
Wallenpaupack Location: PA Operator: PPL Generation LLC Configuration: 2 X 22 MW Francis Operation: 1926 T/G supplier: IPM Quick facts: The dam is 1,275ft long and 70ft high. The plant is supplied from the 5,700ac Lake Wallenpaupack via a 3½-mile, 14ft diameter pipeline. Photograph courtesy of PPL Corp |
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Abbreviations: AC = Allis Chalmers, GE = General Electric, IPM = I P Morris Division of The Wm Cramp & Sons S & E B Company, T/G = turbine generator, USACE = U.S. Army Corps of Engineers, WH = Westinghouse
Data: industcards, Platts UDI World Electric Power Plants Data Base
Updated 08/26/06