Blenheim Gilboa

New York Power AuthoritySchoharie CountyNYISO

A 1,160 MW hydroelectric pumped-storage project on Schoharie Creek in the Towns of Blenheim and Gilboa, Schoharie County, New York, operated by the New York Power Authority. The facility uses two reservoirs at different elevations and four reversible pump-turbine units (approximately 290 MW each) to store and generate electricity, providing peak-demand capacity and grid-balancing services to the New York region. The project first generated power on July 5, 1973, and reached full production on December 17, 1973. Between 2006 and 2010, NYPA completed a Life Extension and Modernization program that refurbished all four turbine-generator units and increased plant capacity from approximately 1,040 MW to 1,160 MW.