TVA brings Sequoyah 1 back into service; Watts Bar 1 starts refueling

The Tennessee Valley Authority (TVA) confirmed early Sept. 21 that it has returned one nuclear unit to service after an unplanned outage while started a planning refueling and maintenance outage at another nuclear plant.

Sequoyah Unit 1 returned to operation on Sunday, Sept. 20, after repairing an issue with one of the unit’s instrumentation power boards, a TVA spokesperson said. Sequoyah 1 had gone offline due to the unplanned outage on Sept. 14.

Sequoyah Units 1 is a pressurized water reactors (PWR) with a generating capacity in excess of 1,100 MW. The Sequoyah complex is located in Hamilton County, Tenn.

Also on Sunday, Watts Bar Unit 1 was taken offline as part of a scheduled refueling and maintenance outage. 

“All systems performed as designed and the Watts Bar team has already begun some of the more than 10 thousand work activities scheduled,” the TVA spokesperson told GenerationHub.

Like most other utilities, TVA does not disclose planned outage durations. Located in Rhea County, Tenn., Watts Bar 1 is a roughly 1,100-MW PWR. TVA is also in the final stages of completing the Watts Bar 2 nuclear unit for commercial operation.

About Wayne Barber 4201 Articles
Wayne Barber, Chief Analyst for the GenerationHub, has been covering power generation, energy and natural resources issues at national publications for more than 20 years. Prior to joining PennWell he was editor of Generation Markets Week at SNL Financial for nine years. He has also worked as a business journalist at both McGraw-Hill and Financial Times Energy. Wayne also worked as a newspaper reporter for several years. During his career has visited nuclear reactors and coal mines as well as coal and natural gas power plants. Wayne can be reached at