EQT GP Holdings, LP owns, operates, acquires, and develops midstream energy assets in the Appalachian Basin through owning partnership interests in EQT Midstream Partners, LP (EQM). EQM offers natural gas transmission, storage, and gathering services to various third parties across 24 counties in Pennsylvania, West Virginia, and Ohio. As of December 31, 2016, it owned and operated 300 miles of high pressure gathering lines and 1,500 miles of Federal Energy Regulatory Commission (FERC)-regulated low pressure gathering lines. EQT GP Services, LLC serves as a general partner of the company. The company was founded in 2015 and is headquartered in Pittsburgh, Pennsylvania. EQT GP Holdings, LP is a subsidiary of EQT Gathering Holdings, LLC.