Williams buys Momentum’s Haynesville assets for $5.5B

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(The Center Square) - Oklahoma-based Williams Companies has agreed to acquire Haynesville shale operator Momentum Midstream’s North Louisiana and East Texas assets from private equity firm EnCap Flatrock Midstream in a deal valued at up to $5.5 billion.

Through the acquisition of Houston-based Momentum Midstream, Williams is adding a network of pipelines at the center of the Haynesville Shale basin capable of carrying about 6 billion cubic feet per day of natural gas to markets outside the region. Momentum’s regional midstream assets include more than 4,000 miles of pipelines and other infrastructure that can deliver natural gas to key supply hubs along the Louisiana and Texas Gulf Coast.

"We are announcing the acquisition of Momentum Midstream, a highly strategic platform that strengthens our position in the country's most important LNG demand corridor," said Williams Companies President and CEO Chad Zamarin. "The combined Williams and Momentum assets will form the backbone that connects our country's fastest growing supply basin with our fastest growing demand corridor.”

In Williams 2Q 2026 Investor Presentation, executives discussed a plan to optimize use of Momentum’s gathering lines through a connection to the company’s downstream interstate pipeline network, including the 10,000-mile Transco system, which serves the Atlantic seaboard and major metropolitan areas across the eastern United States.

Williams executives said the newly acquired assets will provide the operational foundation needed to launch two expansion projects, the $1.5 billion Delta Access project and the Shelby Trough Connector, which together will link growing Haynesville production directly to expanding Gulf Coast LNG and power generation markets.