Dominion Energy and Duke Energy announced today the cancellation of the Atlantic Coast Pipeline (ACP) project, citing cost uncertainty and ongoing delays. The ACP, initially announced in 2014, is a proposed 600-mile fracked gas transmission line planned to span West Virginia, Virginia, and North Carolina.

The decision comes after a U.S. Supreme Court decision in June in which the court ruled by a 7-2 margin that the natural gas pipeline would be allowed to cross the Appalachian Trail.

The press release indicated that a series of legal challenges to the project’s federal and state permits have caused significant project cost increases and timing delays. Recent public guidance of project cost has increased to $8 billion from the original estimate of $4.5 to $5.0 billion. In addition, the most recent public estimate of commercial in-service in early 2022 represents a nearly three-and- a-half-year delay with uncertainty remaining.

“We regret that we will be unable to complete the Atlantic