 Dominion Energy Inc asked U.S. energy regulators for two more years to complete the long-delayed 8 billion Atlantic Coast natural gas pipeline from West Virginia to North Carolina, which the company now expects to enter service in early 2022. The U.S. Federal Energy Regulatory Commission FERC approved Dominions request to build Atlantic Coast in October 2017, authorizing the company to complete the project by October 2020. Atlantic Coast, the nations most expensive gas pipe, is one of several projects delayed in recent years by state opposition and local and environmental legal and regulatory battles. 