Williams Places Two Transco Projects into Service to Meet Growing Energy Demand in the Southeast

Williams (NYSE: WMB) announced today the successful commissioning of the Southeast Energy Connector in Alabama and the Texas to Louisiana Energy Pathway along the Gulf Coast. These fully contracted expansions of the existing Transco pipeline were strategically designed and built to reduce land use and minimize community and environmental impact while delivering additional natural gas volumes to the region.

“I congratulate our team for the efficient completion of these projects, demonstrating our ability to execute large-scale expansions in a safe and environmentally responsible manner,” said Alan Armstrong, president and chief executive officer for Williams. “Demand for affordable, reliable and clean natural gas continues to grow across U.S. markets, driven by increasing electric power generation, reshoring of energy-intensive manufacturing, data center load growth and LNG exports. Williams is committed to meeting this demand with 12 high-return transmission projects currently in execution, which will add more than 3.25 billion cubic feet per day to our transmission systems over the next several years.”

The Texas to Louisiana Energy Pathway project expands Transco’s capacity in Texas and Louisiana by 364 million cubic feet per day (MMcf/d) to support reliability and diversification of energy infrastructure along the Gulf Coast, a growing demand center for domestic needs and LNG export activity.

The Southeast Energy Connector supports the conversion of electric power generation in Alabama from coal to natural gas and provides 150 MMcf/d of natural gas to meet the area’s clean energy needs. Natural gas is critical to reducing carbon emissions and providing the flexibility needed to support a growing renewables component in power generation.

The completed expansions follow recent record-breaking natural gas transmission volumes. Transco recorded 19 of the 20 highest-volume days ever this past winter, driven by a combination of heating, electric power generation loads, and LNG exports along the Transco corridor.

Williams owns and operates Transco, a 10,000-plus-mile natural gas transportation system extending from South Texas to New York City. Transco is the nation’s largest-volume natural gas pipeline system, transporting about 20% of the natural gas produced in the U.S. With these expansions, the Transco pipeline’s system-design capacity has increased to over 20 Bcf/d. In addition, Williams owns and operates the Northwest Pipeline and MountainWest transmission pipeline systems, which are also undergoing expansions to serve growing demand in the West and Pacific Northwest.

About Williams

Williams (NYSE: WMB) is a trusted energy industry leader committed to safely, reliably, and responsibly meeting growing energy demand. We use our 33,000-mile pipeline infrastructure to move a third of the nation’s natural gas to where it's needed most, supplying the energy used to heat our homes, cook our food and generate low-carbon electricity. For over a century, we’ve been driven by a passion for doing things the right way. Today, our team of problem solvers is leading the charge into the clean energy future – by powering the global economy while delivering immediate emissions reductions within our natural gas network and investing in new energy technologies. Learn more at www.williams.com.

Portions of this document may constitute “forward-looking statements” as defined by federal law. Although Williams believes any such statements are based on reasonable assumptions, there is no assurance that actual outcomes will not be materially different. Any such statements are made in reliance on the “safe harbor” protections provided under the Private Securities Reform Act of 1995. Additional information about issues that could lead to material changes in performance is contained in Williams’ annual and quarterly reports filed with the SEC.

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