The US Department of Energy has offered conditional commitments for up to $3.7 billion (£2.8bn) to those firms building two reactors at the Vogtle nuclear plant.
That includes $1.67 billion (£1.3bn) to Georgia Power Company, $1.6 billion (£1.2bn) to Oglethorpe Power Corporation and $415 million (£316m) to three subsidiaries of Municipal Electric Authority of Georgia.
The Vogtle project is the first new nuclear power plant to be licensed and begin construction in the US in more than three decades.
The two 1,100MW Westinghouse reactors are expected to provide more than 17 million MWh of electricity every year – enough for 1.6 million US homes.
The project has created around 6,000 onsite construction jobs to date.
The UK’s energy mix will be part of the discussions at Energy Live Expo on 2nd November at the QEII in London. There are limited free tickets for energy end users.