How Marathon Petroleum Corporation Makes Money

This segment refines crude oil and other feedstocks at 16 refineries across the Gulf Coast, Midwest, and West Coast regions of the United States, with total capacity of approximately 3.0 million barrels per day. The midstream segment also includes natural gas processing capacity of approximately 12.4 billion standard cubic feet per day and NGL fractionation capacity of 829,000 barrels per day. Regulatory risks include potential carbon pricing, stricter emissions standards, and evolving biofuel mandates that could increase compliance costs.

Under President and CEO Maryann T. Mannen, who took office in 2024 after serving as President since 2023, Marathon Petroleum is executing a strategy of portfolio optimization, value chain integration, and disciplined capital allocation while investing in multiyear refinery projects across its Gulf Coast, West Coast, and Mid-Continent value chains. Marathon Petroleum's capital allocation framework prioritizes maintaining an investment-grade credit profile, funding sustaining and growth capital, and returning at least 50% of discretionary free cash flow to shareholders through dividends and share repurchases. With the Martinez Renewables facility at full production, MPLX's growing distributions expected to fund the dividend, and multiyear refinery investments underway, Marathon Petroleum is positioned to maintain peer-leading performance through market cycles. Valero also owns Diamond Green Diesel, a renewable diesel joint venture, and has invested in ethanol production. Marathon Petroleum's investment in renewable diesel, while currently a small earnings contributor, provides a competitive hedge that regional refiners without similar investments lack. The company maintained its investment-grade credit profile. This margin compression reflects the normalization of crack spreads as global refining capacity recovered from pandemic-related shutdowns and as demand growth moderated. While the company maintains an investment-grade credit rating, the high leverage limits flexibility during prolonged margin downturns. Marathon Petroleum's balance sheet, while leveraged, supports an investment-grade credit rating that provides access to capital markets on favorable terms. Marathon Petroleum's growth strategy is built on four pillars: operational excellence in refining, midstream growth through MPLX, renewable fuels expansion, and disciplined capital allocation. In refining, the company is making multiyear investments across its Gulf Coast, West Coast, and Mid-Continent value chains to enhance margins, reduce costs, and optimize systems. These investments include capacity expansions, reliability improvements, and energy efficiency projects that are expected to drive peer-leading profitability per barrel. The company's 2025 refining use of 94% and margin capture of 105% demonstrate the execution capability of this strategy. In midstream, MPLX is investing in natural gas and NGL infrastructure to support increased producer activity, particularly in the Permian Basin and Marcellus Shale. In renewable fuels, the company is using the Martinez Renewables facility and its existing biofuel production capacity to capture growing demand for low-carbon transportation fuels. The company maintains an investment-grade credit profile and prioritizes sustaining and regulatory capital before growth investments. Marathon Petroleum's strategic bet for the next three years centers on three pillars: maximizing refinery use and margin capture through operational excellence and commercial optimization, growing midstream cash flows through MPLX's expanding asset base, and building a material renewable fuels position that hedges the long-term decline in fossil fuel demand. In 2025, the company plans to progress major multiyear projects at refineries in its Gulf Coast, West Coast, and Mid-Continent value chains, with capital investments targeted at enhancing margins, reducing costs, and optimizing systems. At MPLX, growth capital is primarily focused on growing natural gas and NGL businesses in support of expected increased producer activity. A significant milestone in MPLX's NGL wellhead-to-water value chain strategy is the construction of a Gulf Coast fractionation complex and export terminal adjacent to MPC's Galveston Bay refinery, which will supply growing global demand for liquefied petroleum gas (LPG). The company expects to continue returning at least 50% of discretionary free cash flow to shareholders through dividends and share repurchases while maintaining its investment-grade credit profile. The Ohio Oil Company was once again independent, free to pursue its own strategy but also stripped of the protective umbrella of the world's largest corporation. In 1915, Ohio Oil created Illinois Pipe Line Company and immediately spun it off, demonstrating an early understanding of the value of focused operations. In 1953, The Ohio Oil Company was the first to introduce the metal credit plate, the precursor to the modern credit card, to build customer loyalty. Marathon Oil expanded internationally, with production in Libya and Nigeria and refining and marketing in Europe. The newly independent Marathon Oil Corporation focused on exploration and production, with headquarters in Houston, Texas. But the company's downstream assets — refineries, pipelines, marketing, and retail — were increasingly seen as a strategic misfit within an upstream-focused company. Freed from the capital allocation priorities of an upstream-focused parent, Marathon Petroleum pursued aggressive growth in downstream assets. In 2012, the company acquired BP's Texas City refinery and related assets, adding significant Gulf Coast capacity. In 2014, it acquired Hess Corporation's retail operations, expanding its East Coast marketing footprint. It also added the ARCO brand, a powerful retail franchise in the Western United States, and expanded the company's midstream footprint in the Permian Basin.