Dominion Virginia Power and its opponents are squaring off over a proposed multistate power line that would run through northern Virginia.
Both sides on Monday began testimony in a multi-week evidentiary hearing before the State Corporation Commission in Richmond.
The $1.3 billion Trans-Allegheny Interstate Line would be built by Dominion and Pennsylvania-based Allegheny Energy. The 500-kilovolt transmission line would run 240 miles from Washington County, Pennsylvania, to Loudoun County, Virginia, and would pass through Monongalia, Preston, Tucker, Grant, Hardy and Hampshire counties in West Virginia.
Dominion says the power line is necessary to satisfy the growing demand for electricity.
Opponents say the need is overstated and the line would harm the environment.