AUSTIN, Texas, Nov. 24, 2025 /PRNewswire/ —WhiteWater expands Eiger Express Pipeline mainline capacity from 2.5 Bcf/d to 3.7 Bcf/d
WhiteWater today announced the expansion of the Eiger Express Pipeline’s mainline capacity from 2.5 billion cubic feet per day (Bcf/d) to 3.7 Bcf/d, having secured additional firm transportation agreements since WhiteWater announced the project in August 2025. In order to effectuate this increase, the mainline has been upsized from a 42-inch to a 48-inch diameter pipeline, along with incremental compression being installed. This expansion of the Eiger Express Pipeline’s capacity is not expected to affect its previously announced expected in-service date of mid-2028, pending the receipt of customary regulatory and other approvals.
The Eiger Express Pipeline, designed to transport natural gas from the Permian Basin in West Texas to the Katy area, is owned by a joint venture among the Matterhorn JV (70%), ONEOK (15%) and MPLX (15%). The Matterhorn JV is owned by WhiteWater (65%), ONEOK (15%), MPLX (10%), and Enbridge (10%). The joint venture owns long-haul natural gas pipelines which transport natural gas from the Permian Basin to the Gulf Coast with direct connections to LNG export markets. WhiteWater’s stake in the Matterhorn JV is owned by FIC and I Squared Capital. ONEOK’s and MPLX’s direct ownership interests in the Eiger Express Pipeline joint venture are incremental to their ownerships in the Matterhorn JV.
About the Matterhorn Joint Venture
The Matterhorn JV is owned by WhiteWater (65%), ONEOK (15%), MPLX (10%), and Enbridge (10%). The joint venture owns long-haul natural gas pipelines which transport natural gas from the Permian Basin to the Gulf Coast with direct connections to LNG export markets. The Matterhorn JV owns the Matterhorn Express Pipeline and 70% of the Eiger Express Pipeline. WhiteWater’s stake in the Matterhorn JV is owned by FIC and I Squared Capital.
About WhiteWater
WhiteWater is an Austin, Texas based infrastructure company and operator of multiple gas transmission assets, including the Matterhorn Express Pipeline and the Eiger Express Pipeline. WhiteWater is partnered with multiple private equity funds, including but not limited to FIC and I Squared Capital. For more information about WhiteWater, visit www.wwdev.com.
About FIC
FIC Partners Management, LP (“FIC”) is an investment firm with a focus on critical infrastructure assets across the energy and power use value chains. FIC focuses on investment opportunities that seek to generate long-term capital appreciation in the gas transmission, downstream, power and utilities, renewables, and data/telecommunications industries. FIC is the renamed firm following the merger of Emerald Bridge Capital, LP and First Infrastructure Capital Advisors, LLC. For more information about FIC, please visit www.FICfund.com.
About I Squared Capital
I Squared Capital is a leading global infrastructure investor managing $50 billion in assets. We build and scale essential infrastructure businesses that deliver critical services to millions of people worldwide. Learn more at www.isquaredcapital.com.
About ONEOK
ONEOK, Inc. (NYSE: OKE) is a leading midstream operator. For information about ONEOK, visit www.oneok.com.
About MPLX
MPLX LP (NYSE: MPLX) is a diversified, large-cap master limited partnership that owns and operates midstream energy infrastructure and logistics assets. More information is available at www.MPLX.com.
About Enbridge
Enbridge Inc. connects millions of people to energy through its North American natural gas, oil and renewable power networks. To learn more, visit enbridge.com.
SOURCE WhiteWater
