Williams Partners Announces Redemption of 6.125% Senior Notes due 2022

Williams Partners L.P. (NYSE: WPZ) and ACMP Finance Corp. (collectively, the “Issuers”) announced today that they have issued a notice of redemption (the “Notice of Redemption”) to holders of the Issuers’ 6.125% Senior Notes due 2022 (the “Notes”), stating that the Issuers will redeem all of the outstanding Notes for cash on Feb. 23, 2017 (the “Redemption Date”) at a redemption price equal to 103.063% of the principal amount of the Notes, plus accrued and unpaid interest to the Redemption Date.

Additional information concerning the terms and conditions of the redemption are fully described in the Notice of Redemption. Beneficial holders with any questions about the redemption should contact their respective brokerage firm or financial institution.

This press release is for informational purposes only and does not constitute an offer to purchase the Notes or any other securities.

About Williams Partners

Williams Partners is an industry-leading, large-cap natural gas infrastructure master limited partnership with a strong growth outlook and major positions in key U.S. supply basins. Williams Partners has operations across the natural gas value chain from gathering, processing and interstate transportation of natural gas and natural gas liquids to petchem production of ethylene, propylene and other olefins. Williams Partners owns and operates more than 33,000 miles of pipelines system wide – including the nation’s largest volume and fastest growing pipeline – providing natural gas for clean-power generation, heating and industrial use. Williams Partners’ operations touch approximately 30 percent of U.S. natural gas. Tulsa, Okla.-based Williams (NYSE: WMB), a premier provider of large-scale U.S. natural gas infrastructure, owns approximately 74 percent of Williams Partners.

Portions of this document may constitute “forward-looking statements” as defined by federal law. Although the partnership believes any such statements are based on reasonable assumptions, there is no assurance that actual outcomes will not be materially different. Additional information about issues that could lead to material changes in performance is contained in the partnership’s annual and quarterly reports filed with the Securities and Exchange Commission.

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Williams Partners L.P.Media Contact:Keith Isbell, 918-573-7308orInvestor Contacts:John Porter, 918-573-0797orBrett Krieg, 918-573-4614