The completed transaction adds more than 4,000 miles of pipe, 6 Bcf/d of gathering capacity and three pipelines with 4.05 Bcf/d of transportation capacity to Williams’ Haynesville platform.
Published by Allstream Insiders
Allstream Insiders Summary
Williams completed its approximately $5.5 billion acquisition of Momentum Midstream on September 3, 2026. The transaction expands Williams’ integrated natural gas infrastructure position in the Haynesville region and connects additional gathering and transportation assets with Gulf Coast LNG, power-generation and industrial demand.
The acquired platform includes more than 4,000 miles of pipe, over 1 million dedicated acres, approximately 6 billion cubic feet per day of gathering capacity, multiple processing and treating facilities and three take-or-pay pipelines with combined transportation capacity of 4.05 Bcf/d.
Williams says the combined system provides opportunities for future expansion in addition to two projects announced with the transaction in August: the $1.5 billion Delta Access expansion and the Shelby Trough Connector. The September closing announcement does not revise the previously reported capacity or in-service targets for either project.
Momentum Midstream Acquisition Overview
| Transaction or asset item | Company-reported detail |
|---|---|
| Closing date | September 3, 2026 |
| Transaction value | Approximately $5.5 billion |
| Pipeline footprint | More than 4,000 miles |
| Dedicated acreage | More than 1 million acres |
| Gathering capacity | Approximately 6 Bcf/d |
| Transportation capacity | 4.05 Bcf/d across three take-or-pay pipelines |
| Other acquired infrastructure | Multiple natural gas processing and treating facilities |
What did Williams acquire from Momentum Midstream?
The acquisition gives Williams a large-scale gathering and pipeline platform serving the Haynesville natural gas basin. Williams had agreed to acquire 100% of Momentum Midstream, and the September announcement confirms that the transaction has closed.
The acquired system combines four key gathering areas with approximately 6 Bcf/d of capacity, more than 4,000 miles of pipe and multiple facilities for natural gas processing and treating. Three take-or-pay pipelines provide 4.05 Bcf/d of transportation capacity.
The gathering and transportation figures describe different functions within the same integrated platform and should not be added together as 10.05 Bcf/d of unique system capacity. Gas collected on the gathering systems can also move through the transportation assets.
Williams says the acquisition strengthens the connection between Haynesville production and demand from Gulf Coast LNG facilities, power generators and industrial customers. The closing announcement does not identify new customer contracts or dedicate the acquired capacity to a single LNG terminal, power plant or industrial facility.
Which expansion projects were announced with the acquisition?
Williams previously announced Delta Access and the Shelby Trough Connector as the first two expansion projects associated with the combined platform. Those projects remain separate from the $5.5 billion acquisition value.
| Project | Disclosed scope | Capacity | Company target |
|---|---|---|---|
| Delta Access | $1.5 billion expansion along the Transco corridor serving LNG and power demand | Initial capacity of 2.25 Bcf/d, with future expansion opportunities | Expected online in the first quarter of 2029 |
| Shelby Trough Connector | Expansion of the Louisiana Energy Gateway system with a new lateral and additional compression facilities | 750 MMcf/d initially, expandable to 1.5 Bcf/d | Expected in service in the second quarter of 2028 |
Williams reported those project details on August 3 when it announced the acquisition. The September 3 completion release refers to the two already announced expansions but does not provide new engineering, procurement or construction progress for either development.
Delta Access targets 2.25 Bcf/d along the Transco corridor
Delta Access is a $1.5 billion pipeline project designed to provide 2.25 Bcf/d of initial capacity. Williams says the project will run along the Transco corridor and serve growing natural gas demand from LNG and power customers.
The company previously targeted the first quarter of 2029 for the project to come online. Williams also identified opportunities for later capacity expansion, but the August announcement did not assign a capacity figure, budget or schedule to a subsequent expansion phase.
Shelby Trough Connector expands the Louisiana Energy Gateway system
The Shelby Trough Connector is planned as an extension of Williams’ Louisiana Energy Gateway gathering system into the Shelby Trough portion of the Haynesville. The disclosed scope includes a new lateral and additional compression facilities.
Williams expects the project to provide 750 MMcf/d of initial capacity, with the ability to expand to 1.5 Bcf/d. The previously announced in-service target is the second quarter of 2028. Williams did not assign a standalone project value to the Shelby Trough Connector in the cited announcements.
What does closing mean for contractors and suppliers?
The confirmed September milestone is completion of the ownership transaction; it is not a new construction award. Williams has not announced broad contractor changes, rebids or new procurement packages as part of the closing release.
The clearest disclosed construction scope remains the two expansion projects. Delta Access represents a major pipeline development along the Transco corridor, while the Shelby Trough Connector specifically includes a lateral and added compression. Future expansions across the acquired gathering, processing and treating platform would require additional project-level information.
Allstream perspective: ownership is complete and two project pathways are defined
Closing the Momentum acquisition gives Williams control of the acquired Haynesville platform and a larger base from which to connect supply with Gulf Coast demand. For the industrial supply chain, Delta Access and the Shelby Trough Connector provide the most defined near-term project signals.
Based on the announced pipeline, lateral and compression scope, potential work could include:
- Pipeline engineering, right-of-way and civil construction
- Pipe, valves, fittings and metering equipment
- Compression equipment, station construction and related utilities
- Electrical, instrumentation, controls and automation systems
- Welding, nondestructive examination, integrity testing and commissioning
- Environmental, survey, inspection and construction-management services
These categories are Allstream analysis based on the disclosed project configurations. They are not announced bid packages, solicitations or contractor awards.
The next meaningful indicators will be regulatory filings, contractor selections, procurement notices and company-reported engineering or construction milestones for Delta Access, the Shelby Trough Connector and any additional expansions across the acquired platform.
