The Federal Energy Regulatory Commission has granted Dominion Transmission Inc.'s (DTI) Nov. 29 request for authorization to place into service the Stonewall Metering and Regulating Station in Loudoun County, VA, a part of DTI's Leidy South Project [CP15-492]. A supplemental request to commence service for the remaining Leidy South Project facilities is required, according to FERC. Leidy South would serve new and existing power generation facilities with natural gas traveling from the Leidy Interconnect in Clinton, PA, to points in Loudoun County. Panda Stonewall LLC, Virginia Power Services Energy Corp. Inc. and Mattawoman Energy LLC have signed binding agreements for all of the project capacity. The estimated cost is $209.66 million. DTI filed its application for the project with the Commission in 2015, received a favorable environmental assessment from staff in March and approval in late August.