Key Takeaways:
Williams Cos. is closing in on its largest-ever acquisition, a $5.5 billion bet that US natural gas demand will keep rising as export terminals and power plants expand along the Gulf Coast.
Williams Cos. is in advanced talks to acquire Momentum Midstream from private equity firm EnCap Flatrock Midstream for about $5.5 billion, people familiar with the matter said, in what would be the pipeline operator's largest deal on record.
"This acquisition would give Williams a direct artery from the Haynesville shale to the Gulf Coast export market, where LNG demand is projected to grow 40% by 2030," said Tom Brennan, M&A analyst at Edgen. "The premium reflects the scarcity value of midstream assets that connect supply basins to tidewater."
The Tulsa, Oklahoma-based company is putting the finishing touches on an agreement to buy Momentum, which operates natural gas pipelines linking the Haynesville fields in East Texas and Northern Louisiana to export terminals on the US Gulf Coast, the people said, asking not to be identified because the talks are private. Williams shares closed at $77.92 on Friday in New York, up 0.5%, giving the company a market value of about $95 billion. The $5.5 billion price tag represents roughly 5.8% of Williams' current market capitalization.
The deal reflects a wave of consolidation in US midstream energy as pipeline operators race to secure capacity serving LNG export facilities, power plants and data centers. Williams already operates 30,000 miles of pipeline infrastructure. Adding Momentum's network would deepen its reach into the Haynesville, one of the most prolific US natural gas basins, and lock in fee-based revenue tied to long-term export contracts.
EnCap Flatrock Midstream, formed in 2008 as a partnership between Flatrock Energy Advisors and EnCap Investments, stands to realize a significant return on its investment in Momentum. The private equity firm has held the asset through a period of rising US natural gas production and growing export demand.
Haynesville to the Gulf
The Haynesville shale play has emerged as a critical supply source for Gulf Coast LNG terminals because of its proximity — pipelines from the region can reach export facilities in Louisiana and Texas within a day, compared with multiple days for gas from the Permian Basin or Appalachia. Momentum's infrastructure sits at the center of that geography, giving Williams a strategic advantage in serving LNG developers that have committed billions of dollars to new export capacity.
The deal would also position Williams to benefit from surging electricity demand driven by data centers and artificial intelligence. Natural gas-fired power plants are expected to provide much of the incremental generation needed to power the AI buildout, with the Electric Power Research Institute estimating that data center power consumption could more than double by 2030.
Regulatory path
The acquisition will require approval from the Federal Energy Regulatory Commission and antitrust review under the Hart-Scott-Rodino Act. Given the fragmented nature of US midstream infrastructure and the fact that Momentum's assets are largely complementary to Williams' existing network rather than overlapping, regulatory risk is seen as manageable, according to people familiar with the matter. The companies expect to close the deal in the fourth quarter of 2026.
This article is for informational purposes only and does not constitute investment advice.
