MPLX is a diversified master limited partnership formed in 2012 as a subsidiary of Marathon Petroleum Corporation. As a midstream energy infrastructure company, it focuses on the gathering, processing, transportation and storage of crude oil, refined products, natural gas liquids (NGLs) and renewable fuels. MPLX operates as an independent entity, maintaining commercial arrangements with affiliated and third-party producers, refiners and distributors to ensure stable throughput and capacity utilization.
The company’s main business activities include operating crude oil and refined product pipelines, owning and managing terminal and storage facilities, and providing trucking and marine logistics services. MPLX’s pipeline network links major production basins and refinery complexes, enabling efficient movement of hydrocarbons. Its storage terminals offer inventory management solutions for both petroleum products and feedstocks, featuring access to barge, rail and truck loading racks to serve diverse customer requirements.
In addition to traditional hydrocarbon transportation, MPLX is a significant player in NGL gathering and processing. The partnership’s processing plants extract ethane, propane and butane from natural gas streams, while its fractionation facilities purify and separate these liquids for sale into petrochemical, heating and blending markets. More recently, MPLX has expanded into renewable fuels logistics, supporting the distribution of ethanol, biodiesel and renewable diesel through dedicated pipelines and storage tanks to help customers meet evolving regulatory mandates.
Headquartered in Findlay, Ohio, MPLX serves key energy regions across the United States, including the Gulf Coast, Midwest, Rocky Mountains, Northeast and West Coast. Under the leadership of Chief Executive Officer Michael Hennigan, the company emphasizes operational reliability, strategic growth and environmental stewardship. MPLX continues to evaluate capital projects, acquisitions and joint ventures aimed at enhancing its asset footprint and meeting customer demands for flexible, low-cost midstream solutions.
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