Scheduled Outages: Behind the Scenes at the Power Plant

February 23, 2025
Featured image for “Scheduled Outages: Behind the Scenes at the Power Plant”

Photo by Michael Stuart

Dominion Energy’s North Anna Nuclear Power Plant’s iconic domed containment structures look out over Lake Anna’s residents and visitors as they cruise by in their boats every summer. Drivers notice the signs for the plant while driving along Kentucky Springs Road. Local businesses even capitalize on the local landmark by naming their businesses and products with nuclear power-related monikers. But with its security clearance requirements, complexities, and decades of misconceptions in pop culture, many still find the nuclear power world mysterious.

North Anna Power Station produces 17% of the Commonwealth’s energy, 40% of its carbon-free energy, and provides enough electricity to serve nearly 475,000 homes. There are two nuclear reactor units at the Lake Anna location, as pictured here, with Unit 1 on the right and Unit 2 on the left.

Outages occur every six to twelve months in the spring and fall. This spring an outage is scheduled for Unit 2; In the fall, Unit 1 will be shut down. Outages last about 30 days and bring in an additional 600 to 1,000 contractors, doubling the workers from its 900 year-round employees. These contractors come from a variety of trades: electricians, welders, iron workers, mechanics, instruments techs, and even cooks for the cafeteria. Typically, these contractors work side by side with Dominion Energy employees to perform the many additional tasks involved in refueling and maintaining the reactors during an outage.
“The primary purpose of a refueling and maintenance outage is exactly that – refueling the reactor and conducting maintenance, particularly maintenance that we can’t do when the unit is online,” says Tim Eberly, Senior Communications Specialist at Dominion Energy.

Before restarting the reactor a series of inspections take place to ensure safety and efficacy before bringing the reactor back online to start generating energy again. More than just refueling, maintenance and repairs are performed during an outage. Any major capital improvement projects are typically undertaken during this period of time when the unit is offline, as well. Eberly shared that an upcoming project Dominion has planned is to add electrical infrastructure in connection with the planned data center that will be constructed near Lake Anna.

When asked how Virginia’s plans to build Small Modular Reactors (SMR) and possibly a nuclear fusion power plant in the coming years in the Commonwealth would affect the North Anna Power Station, Eberly stated that neither of those potential projects would affect operations at the Dominion plant. An extension of operating licenses for the two reactors at North Anna means that the plant’s reactors can operate through 2058 and 2060, respectively, and the current plans are for operations to continue until those dates.


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Photo by Michael Stuart

Dominion Energy’s North Anna Nuclear Power Plant’s iconic domed containment structures look out over Lake Anna’s residents and visitors as they cruise by in their boats every summer. Drivers notice the signs for the plant while driving along Kentucky Springs Road. Local businesses even capitalize on the local landmark by naming their businesses and products with nuclear power-related monikers. But with its security clearance requirements, complexities, and decades of misconceptions in pop culture, many still find the nuclear power world mysterious.

North Anna Power Station produces 17% of the Commonwealth’s energy, 40% of its carbon-free energy, and provides enough electricity to serve nearly 475,000 homes. There are two nuclear reactor units at the Lake Anna location, as pictured here, with Unit 1 on the right and Unit 2 on the left.

Outages occur every six to twelve months in the spring and fall. This spring an outage is scheduled for Unit 2; In the fall, Unit 1 will be shut down. Outages last about 30 days and bring in an additional 600 to 1,000 contractors, doubling the workers from its 900 year-round employees. These contractors come from a variety of trades: electricians, welders, iron workers, mechanics, instruments techs, and even cooks for the cafeteria. Typically, these contractors work side by side with Dominion Energy employees to perform the many additional tasks involved in refueling and maintaining the reactors during an outage.
“The primary purpose of a refueling and maintenance outage is exactly that – refueling the reactor and conducting maintenance, particularly maintenance that we can’t do when the unit is online,” says Tim Eberly, Senior Communications Specialist at Dominion Energy.

Before restarting the reactor a series of inspections take place to ensure safety and efficacy before bringing the reactor back online to start generating energy again. More than just refueling, maintenance and repairs are performed during an outage. Any major capital improvement projects are typically undertaken during this period of time when the unit is offline, as well. Eberly shared that an upcoming project Dominion has planned is to add electrical infrastructure in connection with the planned data center that will be constructed near Lake Anna.

When asked how Virginia’s plans to build Small Modular Reactors (SMR) and possibly a nuclear fusion power plant in the coming years in the Commonwealth would affect the North Anna Power Station, Eberly stated that neither of those potential projects would affect operations at the Dominion plant. An extension of operating licenses for the two reactors at North Anna means that the plant’s reactors can operate through 2058 and 2060, respectively, and the current plans are for operations to continue until those dates.


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