US midstream company Williams has agreed to acquire Momentum Midstream in what it calls “a strategic Haynesville growth transaction,” combining the companies’ integrated gas transmission networks into a larger, more optimized platform to meet growing demand from Gulf Coast LNG terminals, power generators, and industrial customers.
The $5.5 billion deal announced 3 August by Williams and Encap Flatrock Midstream, Momentum’s private-equity financial partner, includes $3.5 billion in cash and assumed debt and roughly $2 billion in Williams stock.
Williams will acquire Momentum’s more than 4,000 miles of gathering and transmission pipelines, which transverse more than 1 million dedicated acres and deliver gas to Gulf Coast markets through the Bethel, Carthage, and Silsbee hubs in East Texas and the Gillis hub in southwest Louisiana, according to Encap Flatrock.
The acquired assets have nearly 6 Bcf/D of system capacity and serve more than 140 customers, including 34 industrial end users, 26 power plants, 16 city gates, and 10 LNG facilities, in a region where Williams' market outlook forecasts demand could increase as much as 20 Bcf/D over the decade.
Other Momentum infrastructure noted by Encap Flatrock includes
- Two Haynesville Shale natural gas gathering and transmission acquired by Momentum in September 2022.
- The New Generation Gas Gathering (NG3) project, which spans 255 miles and provides 1.75 Bcf/D of gas transmission capacity to Gillis, Louisiana, a key aggregation and dispatch hub serving US LNG demand. The project also includes a carbon capture and sequestration (CCS) program capable of handling up to 1.8 mtpa of CO2.
- Clearfork Midstream, which Momentum acquired in April 2025 and whose assets will also transfer to Williams.
Williams said that the acquisition enables expansion of its $1.5 billion Delta Access Pipeline, a 2.25-Bcf/D project targeted for service in 1Q 2029, as well as the Shelby Trough Connector, a 750-MMcf/D project with expansion potential to 1.5 Bcf/D, that is expected to come online in 2Q 2028. Both projects depend on integrating Williams’ existing network with Momentum’s assets.