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MPLX LP Overview

MPLX is a diversified, large-cap master limited partnership formed by Marathon Petroleum Corporation (MPC) that owns and operates midstream energy infrastructure and logistics assets, and provides fuels distribution services. MPLX’s assets include a network of crude oil and refined product pipelines; an inland marine business; light-product terminals; storage caverns; refinery tanks, docks, loading racks, and associated piping; and crude and light-product marine terminals. The company also owns crude oil and natural gas gathering systems and pipelines as well as natural gas and natural gas liquids (NGL) processing and fractionation facilities in key U.S. supply basins. 



As part of the nation’s critical infrastructure, our priority at MPLX is to protect our employees, contractors and the communities we serve while fulfilling our responsibility to provide the essential fuels and other products that keep the country running. We support local communities, especially those providing healthcare services, by matching essential supplies to what they need and can handle, at the right time. Starting the week of March 23, MPLX deployed its entire stock of personal protective equipment (PPE) to hospitals, healthcare organizations and its own facilities across the country. Over 570,000 N95 respirator masks have been delivered to 46 hospitals and healthcare organizations in 20 states. 

Click here to read our latest response to COVID-19.


Financial Results

Q3 2021 Earnings Conference Call
November 2, 2021 9:30 AM EDT
Click here for more information


2020 Annual Report & 10-K (PDF; 4MB)

2020 Sustainability Report
Click to view report

2021 Perspectives on Climate-Related Scenarios
Click to download (PDF; 3MB)