Williams Partners to Release First-Quarter Financial Results After Market Close on May 4

TULSA, Okla., April 19, 2011 /PRNewswire/ -- Williams Partners L.P. (NYSE: WPZ) announced today a revised schedule for announcing its first-quarter 2011 financial results.  The partnership now plans to release its results after the close of market on Wednesday, May 4.

The partnership's previous plan was to announce its results before the market opens on Thursday, May 5.  Williams Partners is revising its schedule for releasing its financial results to give investors more time to review the information before the first-quarter live webcast.

The schedule for the live webcast is unchanged.  It is planned for Thursday, May 5 at 11 a.m. EDT.  Participants are encouraged to access the webcast at www.williamslp.com.  The slides for the webcast will be available for viewing, downloading and printing when the results are announced on May 4.

A limited number of phone lines also will be available at (888) 516-2438.  International callers should dial (719) 325-2190.  Replays of the first-quarter webcast in both streaming and downloadable podcast formats will be available for two weeks following the event at www.williamslp.com.

Williams Partners expects to continue to release its quarterly financial results on the day prior to the live webcast with investors in future quarters.

About Williams Partners L.P. (NYSE: WPZ)

Williams Partners L.P. is a leading diversified master limited partnership focused on natural gas transportation; gathering, treating, and processing; storage; natural gas liquid (NGL) fractionation; and oil transportation.  The partnership owns interests in three major interstate natural gas pipelines that, combined, deliver 12 percent of the natural gas consumed in the United States.  The partnership's gathering and processing assets include large-scale operations in the U.S. Rocky Mountains and both onshore and offshore along the Gulf of Mexico.  Williams (NYSE: WMB) owns approximately 75 percent of Williams Partners, including the general-partner interest.  More information is available at www.williamslp.com.  Go to http://www.b2i.us/irpass.asp?BzID=1296&to=ea&s=0 or http://www.b2i.us/irpass.asp?BzID=630&to=ea&s=0 to join our email list.

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.  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 the partnership's annual reports filed with the Securities and Exchange Commission.

SOURCE Williams Partners L.P.