TAUM SAUK REDEDICATION

September 27, 2010

April 2010, the Ameren Pumped-Storage Hydroelectric Power Plant reopened and was approved by federal authorities to restart generating electricity. The old reservoir, which was comprised of uncompacted rock, has been replaced by a kidney shaped 1.5 billion gallon reservoir built of roller compacted concrete. The hydroelectric facility is capable of generating 408 megawatts of power.

The original dedication ceremony was held on September 25, 2005, at the Lesterville, Missouri entrance to the facility. More than two dozen IEEE members of the Region 5 and St. Louis Section IEEE were on hand for the event. Approximately 50 AmerenUE employees and executives were also on hand. The IEEE Milestone plaque was enshrined at the Museum by the visitors center entrance to the facility. After the ceremonial speeches by IEEE and Ameren Officials, the group was taken on a tour of the upper reservoir and the site of the impellors that both generate electricity and pump the water back uphill to the upper reservoir.

A rededication ceremony took place September 27, 2010, almost 5 years to the day of the original event. Jim Leonard, who was the IEEE Region 5 History Chairman at the time of the original dedication ceremony planned for the event.

September 25, 2005 - IEEE presented Taum Sauk an "IEEE MILESTONE IN ELECTRICAL ENGINEERING AND COMPUTING" plaque. December 14, 2005 - Taum Sauk upper reservoir failed. September 27, 2010 - IEEE rededicated the plant as an "IEEE MILESTONE IN ELECTRICAL ENGINEERING AND COMPUTING".