TVA Watts Bar 2, other units, return to service

The Tennessee Valley Authority (TVA) Watts Bar 2 nuclear facility has resumed power generation after spending several days offline to address a transformer issue.

Watts Bar 2 nuclear plant at zero power early Oct. 24 only days after the federal utility had official announced “commercial” operation of the 1,150-MW reactor. TVA Watts Bar 2 was at 40% power early Nov. 1, according to data posted by the Nuclear Regulatory Commission (NRC).

Meanwhile the Entergy (NYSE:ETR) Arkansas Nuclear One Unit 2 is back at 100% power. ANO Unit 2 had shut down in late September after problems were detected with operation of an emergency diesel generator. Unit 2 is a 940-MW reactor.

In addition, the 1,150-MW Entergy Waterford 3 nuclear unit in Louisiana had returned to 45% power early Nov. 1. The unit had been at zero power since Oct. 25. Waterford 3 recently synched to the grid after a forced outage, a spokesperson said.

Finally, the Talen Energy Susquehanna 1 nuclear unit was listed at 30% power early Nov. 1. Susquehanna Unit 1 had been listed at 100% power the prior day.  

A Talen spokesperson told GenerationHub that an electrical malfunction in a recirculation pump prompted the company to reduce power at the nuclear unit. Talen is assessing the scope of the problem. Unit 2 was not affected.

Companies typically don’t reveal when they expect reactors to resume 100% power.

In addition, a number of the 99 commercial power units in the United States remain offline for refueling outages.

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