Blenheim-Gilboa Hydroelectric Power Station

The Blenheim–Gilboa Pumped Storage Power Station is a pumped-storage hydroelectricity plant in the Catskill Mountains of New York State. The plant is part of the New York Power Authority, and can generate over 1,100 megawatts (1, 500, 000 hp) of electricity. It is used daily to cover peak demand. There are two reservoirs that are involved in the project, both with a capacity of 5 billion US gallons (19, 000, 000 m3); one at the foot of Brown Mountain in the Schoharie Valley, and another one at the top of the mountain. The power station has an accumulated capacity of about 12,000 megawatt-hours (43, 000 GJ) after storing up to 17,000 megawatt-hours (61, 000 GJ). The reservoir at the foot of the mountain (42°28′00″N 74°27′30″W) was created by impounding the Schoharie Creek downstream from the village of Gilboa, New York. Water from this reservoir is sent through a concrete shaft up the mountain to the upper reservoir (42°26′40″N 74°25′35″W) to be stored until it is needed. When power is needed, the water is sent back down the mountain into the lower reservoir, where it enters a power plant on the banks of the lower reservoir, and spins a series of turbines in the powerhouse. (This structure is almost completely underwater, only five feet of it can be seen above water when the reservoir is full). The water is sent back into the reservoir, flows over the dam that holds the reservoir back

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