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Taum Sauk Energy Center

The Taum Sauk Energy Center is located approximately 120 miles southwest of St. Louis in the scenic Ozark highlands.

Taum Sauk is a pumped storage hydroelectric energy center, which began operations in 1963 at a cost of $50 million. Ameren Missouri rebuilt the upper reservoir in 2010 at a cost of approximately $490 million.

Taum Sauk is used primarily on a peaking basis and is put into operation when the demand for electricity is greatest. The pumped storage system works much like a conventional hydroelectric plant, but is usually used only to meet daily peak power demands for short periods. Water stored in an upper reservoir is released to flow through turbines and into a lower reservoir. As water passes through the powerhouse, it spins the turbines, which drive generators to produce electricity. Overnight, when the demand for electricity is low, the water is pumped back into the upper reservoir, where it is stored until needed. 

Facts and Figures
Taum Sauk water management
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