TVA continues work on two transmission lines in Mississippi, Tennessee

The Tennessee Valley Authority (TVA) on Sept. 18 said that it has identified a preferred route for the new Flowood Transmission Line that is designed to provide power for growing load and increase power reliability in the Flowood, Miss., area.

Central Electric Power Association plans to build the Flowood substation at the southwest corner of the intersection of Mississippi Highway 471 and Vine Drive, TVA said.

TVA noted that its new 4.5-mile line would begin at the Sebastopol-Langford 161-kV transmission line and extend southwest to the new substation. The preferred route – which is a combination of segment Nos. 1, 3, 10, 11, 12, and 13 – is expected to have the least impact on the area, based on public input from an April open house and additional evaluation of other factors, including social, environmental, and engineering impacts.

TVA also said that a National Environmental Policy Act review is pending, and that it will meet with property owners along the proposed right of way (ROW) to obtain easements for construction, operation, and maintenance of the line. Noting that the project will require a new ROW, TVA said that property owners will still own the property and be compensated for the easements at fair market value.

TVA said that it is expected to begin surveys this fall, and start acquiring easements next fall. Construction is scheduled to begin in summer 2020, and be completed by winter 2020-2021, TVA said.

In other project news, TVA on Sept. 14 said that it is seeking public input about upgrades to its transmission system in Dayton, Tenn.

TVA noted that it is proposing to build about 12 miles of double-circuit transmission line from the Sequoyah Nuclear Plant-Watts Bar Hydro Plant 161-kV transmission line to the North Dayton 161-kV substation.

TVA said that it would also expand the North Dayton 161-kV substation, which is located on Back Valley Road. The line would be built using double-circuit, steel pole structures centered on existing and new 100-foot-wide ROW. TVA added that several alternate line routes are under consideration.

According to the project’s webpage, the new line would begin where TVA’s vacant Athens-Dayton ROW crosses the Sequoyah-Watts Bar 161-kV Transmission Line. That point is about eight-tenths of a mile west of Decatur and about 1,000 feet south of the intersection of Highway 30 and Goodfield Road in Meigs County, the site noted. The new line would extend west crossing Chickamauga Lake for about eight miles on the existing Athens-Dayton ROW, which would be expanded from 75 feet to 100 feet wide. 

The site added that the line would then head northwest for about four miles on new 100-foot-wide ROW crossing Highway 30, Highway 27, the railroad and Nokian Tyres property and then ending at the North Dayton 161-kV Station in Rhea County. That station, located on Back Valley Road, will be expanded, TVA said.

An open house on the project is scheduled for Sept. 20 in Dayton, Tenn., TVA said in its statement.

TVA spokesperson Malinda Hunter on Sept. 21 told TransmissionHub: "The Flowood project is estimated to cost $4 million and the North Dayton project is estimated at about $30 million. Both projects are 161kV lines."

Article amended at 2:28 p.m., EST, on Friday, Sept. 21 to include the TVA spokesperson’s comments.

About Corina Rivera-Linares 3058 Articles
Corina Rivera-Linares, chief editor for TransmissionHub, has covered the U.S. power industry for the past 15 years. Before joining TransmissionHub, Corina covered renewable energy and environmental issues, as well as transmission, generation, regulation, legislation and ISO/RTO matters at SNL Financial. She has also covered such topics as health, politics, and education for weekly newspapers and national magazines. She can be reached at clinares@endeavorb2b.com.