Nuclear, Retrofits & Upgrades

TVA Commences Scheduled Outage for 1,160-MW Sequoyah Nuclear Unit 2

Sequoyah Nuclear Plant Unit 2 took its first scheduled refueling and maintenance outage after 514 days of continuous energy, the Tennessee Valley Authority reported Monday.

The nearly 36-year-old Unit 2—part of the complex near Soddy-Daisy, Tenn.—generated nearly 14.7 billion kWh of carbon-free energy during its continuous operation, the TVA noted. Sequoyah Units 1 and 2 both produce more than 1,160 MW in electricity capacity, according to reports.

“Outages like this demonstrate TVA’s investment to deliver reliable, low-cost, carbon-free electricity for the Valley,” Tony Williams, TVA Sequoyah site vice president, said in a statement. “The team will load new nuclear fuel and perform key maintenance activities that can only be safely completed with the unit offline.”

Scheduled unit outages are planned years in advance. Planning for TVA’s outage began than three years ago to ensure safety and thoroughness, the company said.

“Sequoyah’s highly skilled workforce is making the most of this opportunity to ensure Unit 2 continues to operate safely and reliably until the next refueling outage about 18 months from now,” Williams said.

An additional 1,300 TVA and contract employees are supplementing the site’s regular staff during the scheduled outage. Over 12,300 work activities are planned, including loading new fuel assemblies, performing inspections of reactor components, maintenance of plant equipment and installing unit enhancements.

Sequoyah Unit 2 is one of seven operational TVA nuclear reactors across the Valley. Collectively, TVA’s nuclear fleet provides about 40 percent of all electricity used by nearly 10 million people in the Tennessee Valley.

Unit 2 began commercial operation in 1982, one year after Unit 1. It is licensed through 2021.

Sequoyah Nuclear Plant produces the most power of any generation facility in Tennessee, according to reports.


POWER-GEN International conference and exhibition will have several Knowledge Hub sessions on nuclear energy. The Knowledge Hubs are new features happening down on the exhibit floor. Click here for more information on Knowledge Hubs and the Future of Baseload track.