Plant Vogtle near Augusta, Georgia, is now the largest nuclear power plant in the United States, with a capacity of 4,536 megawatts following the start of commercial operation at Units 3 and 4. The expansion, operated by Southern Nuclear for Georgia Power and its partners, gives the Southeast a major source of around the clock generation.
The new units have performed at or above industry average since entering service, and Unit 4 completed its first refueling outage in September 2025. Refueling outages are routine milestones that confirm a unit has settled into its operating cycle. More than 1,600 people now oversee operations across the four Vogtle units, running the plant 24 hours a day throughout the year.
Nuclear plays a large role in the state's power mix. Roughly 25 percent of Georgia's electricity each year comes from just two nuclear plants, Plant Hatch near Vidalia and Plant Vogtle near Augusta. The Vogtle expansion increases that contribution and adds firm capacity to the regional grid at a time when Southeast power demand is rising.
Financing remains part of the story. As of March 31, about 4.6 billion dollars was outstanding under credit facilities involving Georgia Power, the Department of Energy, and the Federal Financing Bank, secured by Georgia Power's interest in Units 3 and 4. The completed units now anchor Georgia's baseload supply.
Source: Georgia Power -- https://www.georgiapower.com/about/energy/plants/plant-vogtle.html