Midcoast Energy Partners, L.P. engages in gathering, processing, treating, transporting, and marketing natural gas, natural gas liquids (NGLs), crude oil, and condensate in the United States.The company gathers unprocessed and untreated natural gas from wellhead locations and other receipt points; processes the natural gas to remove NGLs and impurities; and transports processed natural gas and NGLs to intrastate and interstate pipelines for transportation to various customers and market outlets. In addition, it markets natural gas and NGLs to wholesale customers. The company operates natural gas gathering and transmission pipelines; and NGL gathering and transportation pipelines, as well as holds an interest in NGL intrastate transportation mainline and a related NGL gathering system. Midcoast Holdings, L.L.C. serves as the general partner of the company. The company was incorporated in 2013 and is headquartered in Houston, Texas. Midcoast Energy Partners, L.P. operates as a subsidiary of Enbridge Inc.