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.