The company seeks approval to build the power station in close proximity to northern Virginia, and the facility is expected to generate enough electricity for more than 300,000 homes at peak demand.

The power station has received approval from Warren County, an air permit from the Virginia Department of Environmental Quality and a water agreement from Front Royal.

As part of its air permit, Dominion agreed to mitigate potential impact on Shenandoah National Park by agreeing to close the North Branch coal-fired power station in West Virginia.

During the construction phase, the power project is expected to provide direct and indirect economic benefits to the state of about $950m, the company said.