Williams is a midstream energy company headquartered at One Williams Center in Tulsa, Oklahoma, and listed on the New York Stock Exchange under the symbol WMB. Its annual report for 2025 counts operations in 11 supply areas that serve roughly 800 customers, and puts the group's interests at more than 32,000 miles of pipelines in 24 states and the Gulf of America, 35 natural gas processing plants, nine NGL fractionation facilities, about 23 million barrels of NGL storage and 423 billion cubic feet of gas storage. The company says it handles about one third of the natural gas used each day in the United States.

Transmission: Transco, Northwest and Gulfstream

Williams organises its business into Transmission & Gulf of Mexico, Northeast Gathering & Processing and West Gathering & Processing. The largest single asset is Transco, an interstate system that runs from Texas, Louisiana, Mississippi and the Gulf of America through Alabama, Georgia, South Carolina, North Carolina, Virginia and further northeast, serving customers in 12 southeast and Atlantic seaboard states, including metropolitan areas in Georgia, Washington D.C., Maryland, North Carolina, New York, New Jersey and Pennsylvania. Northwest Pipeline (NWP) is a second interstate mainline system, running through the western United States. Williams holds 50 per cent of Gulfstream Natural Gas System, a Florida line with capacity to transport 1.4 Bcf per day, and operates it with the other owner.

Gathering, processing and storage

Beyond the mainlines, the company's upstream-facing assets are gathered in the Northeast and West segments. Gulf Coast Storage comprises about 230 miles of transmission pipelines and six underground storage facilities with roughly 120 Bcf of capacity across Louisiana and Mississippi, with direct connections to LNG export plants and interstate pipelines. NorTex adds about 94 miles of transmission and 37 Bcf of storage in the Dallas-Fort Worth market. Through the Appalachia Midstream investments, Williams operates and holds average interests of about 66 per cent in the Bradford Supply Hub and about 68 per cent in Marcellus South, together about 1,108 miles of gathering pipeline with capacity to gather 5,870 MMcf per day. The 50 per cent-owned Blue Racer Midstream joint venture holds 639 miles of gathering lines and the Natrium complex in Marshall County, West Virginia, with 800 MMcf per day of cryogenic processing capacity, about 134 thousand barrels per day of fractionation and approximately 220,000 barrels of NGL storage.

Projects under development

The company's project pipeline mixes pipeline expansions with gas-fired power generation for data-centre and industrial load.

  • Leidy Access and Garden Connector: customer agreements signed on Transco expansions in the Northeast.
  • Power Express: an upsized Transco project intended to serve growing power demand.
  • Southeast Supply Enhancement: an expansion delivering gas to Virginia, the Carolinas, Georgia and Alabama.
  • Apollo Power Generation and Socrates North and South: gas-fired generation developments in Ohio, the latter on roughly 20 acres each in New Albany.
  • Silver Spur: a proposed route for Rocky Mountain gas into Idaho and the Pacific Northwest.
  • Pine Prairie Energy Center: a proposed sixth storage cavern adding 10 Bcf of working gas capacity.
  • Kelso Beaver Reliability: an addition of 183,400 dekatherms per day of capacity on the Northwest Pipeline system.
  • Driftwood Line 200, with Woodside Energy, in southwest Louisiana; Green River West in Sweetwater County, Wyoming; plus the Ryckman Creek Lateral Loop, Wild Trail and Kemmerer HP Replacement projects.

2026 results and corporate activity

Second-quarter 2026 results, announced on 3 August 2026, reported GAAP net income of $827 million, or $0.68 per diluted share. Alongside those results the company announced the acquisition of Momentum Midstream, valued at approximately $5.5 billion, which closed on 3 September 2026 and expands its Haynesville position toward Gulf Coast LNG and power demand; an expansion of the Louisiana Energy Gateway gathering system was announced at the same time. On 13 July 2026 Williams signed a $5.34 billion investment in a Power Innovation joint venture led by Blackstone with Apollo and KKR. The first phase of the Socrates power project was completed, with phase two targeted for the fourth quarter of 2026. The board approved a quarterly dividend of $0.525 per share, or $2.10 annualised, on 28 July 2026, payable on 28 September 2026, and in September 2026 the company priced $500 million of 5.000 per cent senior notes due 2029 and $1.0 billion of 5.600 per cent senior notes due 2033. Williams released its 2025 Sustainability Report on 30 July 2026.

Company background

Williams traces its founding to 1908. The company was originally incorporated under the laws of Nevada in 1949 and reincorporated in Delaware in 1987, according to its annual report. Its head office address is One Williams Center, PO Box 2400, Tulsa, Oklahoma. General questions about the company are directed to [email protected] or to (800) 945-5426, while media enquiries are handled through [email protected].