What is the Western Gateway Pipeline project, and who are the key stakeholders involved?

The Western Gateway Pipeline is a proposed $5 billion, 1,300-mile refined products pipeline system with a design capacity of 230,000 barrels per day, intended to deliver fuel from St. Louis, Missouri and Gulf Coast origin points to Arizona and California. Phillips 66, Kinder Morgan, and HF Sinclair have approved the project and formed a joint venture, with ownership stakes of 49.9%, 35.1%, and 15%, respectively.

How will existing infrastructure be repurposed for the Western Gateway Pipeline, and what financial contributions are each company making?

Phillips 66’s Gold Pipeline (Borger, Texas to St. Louis) and Kinder Morgan’s existing pipeline between Colton, California and Phoenix, Arizona will be reversed to serve the new east-to-west system; Kinder Morgan will also contribute its SFPP East Line and West Line assets to the joint venture at a value of about $1.5 billion. Phillips 66 will contribute nearly $2.5 billion in cash, Kinder Morgan about $250 million, and HF Sinclair about $750 million toward the project’s estimated $5 billion enterprise value.

Phillips 66, Kinder Morgan, HF Sinclair approve $5 billion Western Gateway project

Aug 11, 2026

Phillips 66, Kinder Morgan, and HF Sinclair finalized a joint venture for a $5 billion Western Gateway Pipeline system to supply the U.S. West Coast with 230,000 barrels per day capacity ahead of California refinery closures.

reuters

2026-04-20

Phillips 66, Kinder Morgan Advance Gulf Coast-to-California Pipeline

2026-06-23

Phillips 66 CEO says Hormuz supply disruptions may linger amid shipping uncertainty

2026-06-24

Phillips 66 CEO warns of refining, petrochemical earnings volatility from Hormuz disruptions

2026-06-30

Phillips 66 CEO Warns Strait of Hormuz Uncertainty Increases Refining Profit Volatility

2026-08-11

Phillips 66, Kinder Morgan, HF Sinclair approve $5 billion Western Gateway project

Phillips 66, Kinder Morgan, HF Sinclair approve $5 billion Western Gateway project

FAQ