Dominion subsidiary Dominion Virginia Power has started work on its 1,588MW Greensville County Power Station in Virginia, USA.
Construction on the new $1.3bn facility follows the plant's air permit approval by the Virginia Air Pollution Control Board.
According to the company, the air permit, issued on June 17, was the last regulatory hurdle the power plant had to clear before proceeding.
Dominion's Generation Group CEO Paul Koonce said: "This is terrific news for Dominion, its customers, the Commonwealth, Greensville County and all of Southside Virginia.
"We are excited about the task ahead and are looking forward to getting this state-of-the art power station operating and providing energy to more than 400,000 customers by 2019."
The new plant will be the company's second major generation project in Southside, being the first Brunswick County Power Station, which started generating electricity in April.
* Data provided by Timetric's Construction Intelligence Center.