Dominion Energy and Duke Energy, co-owners of the Atlantic Coast Pipeline, have asked federal regulators for a two year extension.  They now say the 600 mile pipeline will not be completed until 2022.

The developers originally projected construction would be completed in 2019.  Multiple legal challenges and permitting issues have added to the delays, as well as the price tag: $8 billion, up 60% from the initial estimate of $5 billion. Most of that cost will be passed on to ratepayers.

The Federal Energy Regulatory Commission could legally grant the time extension if it determines the delays are the result of “good cause.”  Based on its previous decisions, FERC will likely approve the request.