TVA Begins Refueling Outage at Watts Bar Unit 2
The scheduled outage at the Spring City, Tennessee reactor involves about 10,500 work activities and 88 new fuel assemblies.
Updated on Nov. 14, 2026 in Nuclear
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The Tennessee Valley Authority began a scheduled refueling and maintenance outage at Watts Bar Unit 2 late Friday evening. The unit had generated 14.93 billion kilowatt-hours of carbon-free energy during 536 days of operation before going offline.
Why it matters
Refueling and upgrades can only be performed while a reactor is offline, so the outage is the window for inspections and equipment work. Watts Bar Unit 2 is one of seven operational TVA reactors, and TVA nuclear power supplies more than 40% of the electricity used in the Tennessee Valley.
The figures come from TVA's own operating records and outage plan, with 14.93 billion kilowatt-hours generated over 536 days of operation before the unit went offline. The outage scope, including roughly 10,500 work activities and 88 new fuel assemblies, is planned, and the expected return-to-service date is not stated.
The players
Tennessee Valley Authority (TVA)
TVA is the nation's largest public power supplier, serving more than 10 million people across seven southeastern states, and it operates the Watts Bar plant.
The details
TVA took Watts Bar Unit 2 offline for scheduled refueling and maintenance work. Crews are loading new fuel, inspecting reactor components and turbine-generator systems, maintaining plant equipment, and installing unit enhancements.
Timeline
Late Friday evening: outage begins at Watts Bar Unit 2.
536 days: length of operation before the outage, during which the unit generated 14.93 billion kilowatt-hours.
Next 10 to 15 years: TVA's Nuclear Life Extension plan is expected to add up to 244 MW of generation.
Roadmap
This outage is one stage of TVA's Nuclear Life Extension plan, which has more than 400 projects in process and is designed to add up to 244 MW over the next 10 to 15 years. It shows how the utility is extending the operating life of its existing reactors rather than relying only on new construction.
Because TVA nuclear supplies more than 40% of the electricity used in the Tennessee Valley, the outage matters to households and businesses that depend on that power. The extraction does not say whether the outage will affect customer rates or service reliability.
The takeaway
Routine refueling and inspections are how aging reactors stay in service, and TVA's life-extension projects show how utilities plan those upgrades years in advance. Readers tracking regional power supply can watch for the unit's return-to-service announcement.
Further reading
For more on how the region's power supply is evolving, see the Nuclear section.
Source note: This article includes information reported by The Herald-News.
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