John Thomas, the TVA's chief financial officer, said closing the two plants would save ratepayers $320 million without affecting the reliability and resilience of the agency's fleet. He said that the coal plants weren't designed to be turned on and off and that the TVA had been "running them at times when they are not economical." Moreover, both plants would require about $1.3 billion in capital investments.
Source: Los Angeles Times February 14, 2019 19:18 UTC