MPC · 10-Q · 2026Q2 · Full report

Manufacturing And Capacity

Marathon Petroleum Corp · 2026-08-04 · Importance 37 · Surprise 32 · Matches filing data

Net refinery throughput declined 116 mbpd year over year in the second quarter and 57 mbpd in the first six months, primarily because of increased planned turnaround activity. The reduction was concentrated primarily in the Mid-Continent region. Crude oil refined decreased to 2,798 mbpd from 2,883 mbpd in the quarter, while gasoline yields declined to 1,439 mbpd from 1,526 mbpd. Refining operating costs increased because of major maintenance and engineered projects conducted during turnaround activity.

Key facts

• The $62 million of funding to the Martinez Renewables JV due to turnaround costs in the first quarter of 2026 is expected to be recovered through subsequent distributions from the JV during 2026. source
• Refining planned turnaround costs increased $0.13 per barrel, or $25 million, in the second quarter of 2026. source
• Net refinery throughput was 2,944 mbpd for the three months ended June 30, 2026 and 3,060 mbpd for the three months ended June 30, 2025; net refinery throughput decreased 116 mbpd year-over-year. source
• Net refinery throughput was 2,898 mbpd for the six months ended June 30, 2026 and 2,955 mbpd for the six months ended June 30, 2025; net refinery throughput decreased 57 mbpd year-over-year for the six-month period. source
• In the first six months of 2026, investments primarily included contributions to MPLX and Renewable Diesel equity method investments. source
• In the first six months of 2025, investments primarily included contributions to MPLX equity method investments. source

Impact estimates