Williams Pipeline Partners L.P. Announces Initial, Prorated Cash Distribution

The first-quarter 2008 distribution is prorated to cover the period of time from Jan. 24, when the partnership's initial public offering closed, through March 31. The prorated distribution of $0.2242 equates to a full-quarter distribution of $0.30 per unit, exceeding the partnership's minimum quarterly distribution is $0.2875.

The board of directors of the partnership's general partner has approved the first-quarter 2008 distribution, which is payable on May 15 to unitholders of record at the close of business on May 7.

First-Quarter Financial Results

Williams Pipeline Partners plans to report its first-quarter 2008 financial results before the market opens on Thursday, May 1.

Management will discuss the partnership's results during a live webcast beginning at noon Eastern the same day. Participants are encouraged to access Williams Pipeline Partners' webcast at http://www.williamspipelinepartners.com. Slides will be available for viewing, downloading and printing on the morning of May 1.

A limited number of phone lines also will be available for the partnership's webcast at (877) 852-6579. International callers should dial (719) 325-4812. Replays of the first-quarter webcast, in both streaming and downloadable podcast formats, will be available for two weeks at http://www.williamspipelinepartners.com following the event.

About Williams Pipeline Partners L.P. (NYSE: WMZ)

Williams Pipeline Partners is a publicly traded master limited partnership that owns and operates natural gas transportation and storage assets. The general partner of Williams Pipeline Partners is Williams Pipeline GP LLC, which is a wholly owned subsidiary of Williams (NYSE: WMB). For more information, please visit http://www.williamspipelinepartners.com. Go to http://www.b2i.us/irpass.asp?BzID=1589&to=ea&s=0 to join our e-mail list.

     Contact:  Jeff Pounds
               Williams (media relations)
               (918) 573-3332

               Richard George
               Williams (investor relations)
               (918) 573-3679

This press release may include "forward-looking statements" as defined by federal law. All statements, other than statements of historical facts, included in this press release that address activities, events or developments that the Partnership expects, believes or anticipates will or may occur in the future are forward-looking statements. These statements are based on certain assumptions made by the Partnership based on its experience and perception of historical trends, current conditions, expected future developments and other factors it believes are appropriate in the circumstances. Such statements are subject to a number of assumptions, risks and uncertainties, many of which are beyond the control of the Partnership, which may cause our actual results to differ materially from those implied or expressed by the forward-looking statements. Additional information about issues that could lead to material changes in performance is contained in the Partnership's Annual Report on Form 10-K filed with the Securities and Exchange Commission on March 3, 2008.

SOURCE Williams Pipeline Partners L.P.