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The Motiva Port Arthur Refinery is the largest refinery in the United States (656,400 bpd)

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Kokel, Nicolas
9/5/2026 7:14 AM



Aerial view of the Port Arthur Refinery | Source: The Center for Land Use Interpretation (date unknown)

The Motiva Port Arthur Refinery, located in Port Arthur, Texas (U.S. Gulf Coast), is the largest refinery in the United States with ⁠a ​crude oil nameplate processing capacity of 656,400 bpd. It is operated by Motiva Enterprises LLC, a wholly owned subsidiary of Saudi Aramco (since 2017, following the split of the former Shell–Saudi Aramco joint venture).

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