To the ears of the nuclear community, the news from Georgia Power this morning may sound a bit like “Ode to Joy” from Beethoven’s Ninth: After years of delay, Unit 3 at the Vogtle nuclear power plant has entered commercial operation, becoming the first newly constructed power reactor in the United States in more than 30 years and the nation’s first Westinghouse-supplied Generation III+ AP1000 unit to be placed into service. The new unit joins Vogtle-1 and -2—1,169-MWe four-loop pressurized water reactors that entered commercial operation in the late 1980s.

The Vogtle expansion project’s Unit 3 reactor has attained 100 percent energy output—the first time it has reached its maximum expected output of approximately 1,100 MWe, Georgia Power announced yesterday.

Georgia Power has announced another key milestone for the Vogtle nuclear expansion project near Waynesboro, Ga.—the completion of hot functional testing at Unit 4. This achievement marks another significant step toward commercial operation for the Generation III+ AP1000 reactor, which is projected to enter service late in the fourth quarter 2023 or in the first quarter 2024.

Unit 3 at the Vogtle nuclear power plant has been successfully synchronized and connected to the electric grid, Georgia Power announced on April 1. The unit—one of two Westinghouse-supplied AP1000s at the Waynesboro, Ga., plant’s nuclear expansion site—becomes the first new U.S. power reactor to start up in seven years.