TVA Watts Bar 2 is now officially synched to the electric grid

The Tennessee Valley Authority (TVA)’s Watts Bar nuclear Unit 2 generated electricity onto its power grid for the first time on Friday, June 3.

Watts Bar Unit 2 is officially synced to the grid and licensed reactor operators have begun an initial test run of generation equipment. The team is using this run to collect data to be sure generating equipment is prepared for continuous full-power operation later this summer.

“This is another major step in fully integrating Watts Bar Unit 2 as the seventh operating unit in TVA’s nuclear fleet,” said TVA Chief Nuclear Officer Joe Grimes. “It is rewarding to see TVA taking the lead on delivering the first new nuclear unit of the 21st century and providing safe, affordable and reliable electricity to those we serve.”

The next step is full-plant testing of systems and controls at increasing reactor power levels up to 100% power. These tests will be repeated multiple times to ensure the plant operates safely as designed.

After operating at 14% power for at least a couple of days the prior week, Watts Bar 2 was listed at zero power early June 6, according to Nuclear Regulatory Commission (NRC) data.

TVA has said that it expects to the Watts Bar 2 project to achieve commercial operation this summer at total estimated project cost of $4.7bn, TVA began work to complete the nuclear plant after it sat unfinished for many years.

Once all power ascension tests have been completed successfully, Watts Bar Unit 2 will provide up to 1,150 MW of carbon-free electricity to the Tennessee Valley. Combined with Watts Bar Unit 1, the plant will supply power to roughly 1.3 million homes in the TVA service area.

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