Anderson 500-kV Substation and Associated System Modifications

Anderson, Blount, Knox, and Roane Counties, Tennessee

In September 2020, it was determined that the substation construction would generate a greater quantity of spoil material and that the location at the Bull Run Fossil plant analyzed for spoil deposition would no longer be feasible. TVA identified a location onsite that would eliminate the need to haul spoil offsite while at the same time meet the need both temporarily and permanently for spoil material. On December 9, 2020, TVA issued an amended FONSI, which analyzed the impacts from this scope change.

On May 29, 2020, Tennessee Valley Authority (TVA) issued a final environmental assessment (EA) and finding of no significant impact (FONSI) for its proposal to construct a new 500-kV substation in Anderson County, Tennessee and to modify other transmission system assets which provide the bulk power supply to Knoxville and the surrounding areas. 

TVA plans to retire the Bull Run Fossil plant in 2023. To compensate for the loss of generation at TVA’s Bull Run Fossil plant, TVA’s Bulk Transmission System needs to be upgraded to ensure the electric load on the power grid is not disrupted and the surrounding area’s future and present power needs are met. The proposed Anderson 500-kV Substation would be constructed on TVA property located across the Clinch River from the Bull Run Fossil plant. 

Additional information on this project and the closing of the Bull Run Fossil Plant is available.