tva logoTennessee Valley Authority

Magnolia Combined Cycle Gas Plant


Magnolia Combined-Cycle Gas Plant is the latest addition to TVA’s expanding fleet of clean, efficient natural gas-fired generating facilities. The 374-acre site is in Benton County near Ashland in northern Mississippi.

The Magnolia plant is a modern, fully permitted facility with a proven operational history. It is TVA’s third wholly owned combined-cycle gas plant and its largest. TVA operates a fourth combined-cycle plant, Caledonia, under a long-term lease agreement. A fifth, John Sevier – also wholly owned – began commercial operation in 2012.

Combined-cycle units are enhanced versions of simple-cycle combustion turbines. They burn natural gas or low-sulfur oil and operate on the same principle as a jet engine. Air entering each unit is compressed, mixed with fuel, and ignited. The hot gas expands through turbine blades that turn generators to produce electricity.

Combined-cycle units generate 50 percent more power than simple-cycle turbines from the same amount of fuel. They do this with a heat recovery steam generator, which uses the exhaust from the first turbine to produce steam that can generate additional electricity from a second turbine.

Combustion turbines and combined-cycle units help provide the extra power TVA sometimes needs during peak demand periods.


Content for id "future1" Goes Here
Content for id "future2" Goes Here
Content for id "future3" Goes Here