Raccoon Mountain Pumped-Storage Plant
|Raccoon Mountain Pumped-Storage Plant|
Reservoir atop Raccoon Mountain (TVA photo)
|Owner(s)||Tennessee Valley Authority|
|Generation units||4 x Pump-generator|
|Installed capacity||1652 MW|
Water is pumped from Nickajack Reservoir on the Tennessee River at the base of Raccoon Mountain to a storage reservoir built at the top of the mountain. The reservoir at the top of the mountain covers 528 acres (213.7 ha), with a dam that is 230 feet (70 m) high and 5,800 feet (1,800 m) long, the largest rock-fill dam ever built by TVA. It takes 28 hours to fill the upper reservoir. During periods of high electric demand, water can be released from the reservoir through a tunnel drilled through the center of the mountain, driving electric generators in an underground hydroelectric plant. The plant has a capacity of 1652 megawatts of electricity and can generate for up to 22 hours. The plant is used most days and serves as an important element for peak power generation and grid balancing in the TVA system.
The plant was idled in March 2012 due to cracks in the generators' rotors. The TVA estimated that the plant will not return to full operation until 2014 or 2015.
The facility is a popular recreation spot for hiking, walking, running, road and mountain biking.
|Wikimedia Commons has media related to Raccoon Mountain Pumped-Storage Plant.|
- TVA: Raccoon Mountain Pumped-Storage Plant
- Adkins, F.E., 1987, TVA Report "Raccoon Mountain pumped storage plant; Ten years operating experience," IEEE Transactions on Energy Conversion, Volume EC-2, Issue 3 (September 1987), pages 361 - 368. CODEN:ITCNE
- The Mountaintop Marvel, TVA Heritage website, accessed September 8, 2010
- Sohn, Pam (August 10, 2012). "TVA's pumped storage facility on Raccoon Mountain idle". Chattanooga Times Free Press. Archived from the original on August 26, 2012. Retrieved August 26, 2012.