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Exhibit 99.1
 El Paso Pipeline Partners, L.P. Closes Initial Public Offering
 HOUSTON, Nov. 21 /PRNewswire-FirstCall/  El Paso Pipeline Partners, L.P. (NYSE: EPB) has
closed its initial public offering of 28,750,000 of its common units at $20 per unit. The
number of units issued at closing included 3,750,000 additional common units issued
pursuant to the exercise of the underwriters over-allotment option. Net proceeds received
by El Paso Pipeline Partners from the sale of the 28,750,000 units were approximately
$540.5 million.The common units offered to the public represent 33.2 percent of the outstanding equity of
El Paso Pipeline Partners. El Paso Corporation will indirectly own the remaining equity
interests in El Paso Pipeline Partners, L.P.Lehman Brothers Inc.; Citi; Goldman, Sachs & Co., and UBS Securities LLC acted as the
joint book-running managers of the offering. Merrill Lynch & Co.; Morgan Stanley; Wachovia
Securities; Credit Suisse; Raymond James; RBC Capital Markets, and Tudor Pickering acted
as co-managers.This news release does not constitute an offer to sell or a solicitation of an offer to
buy these securities, nor shall there be any sale of these securities in any jurisdiction
or state in which such an offer, solicitation, or sale would be unlawful prior to
registration or qualification under the securities laws of any such jurisdiction or state.
The offering may be made only by means of a prospectus.El Paso Pipeline Partners, L.P. is a Delaware limited partnership formed by El Paso
Corporation to own and operate natural gas transportation pipelines, storage, and other
midstream assets. El Paso Pipeline Partners, L.P. owns Wyoming Interstate Company, a
pipeline system serving the Rocky Mountain region, and a 10 percent interest in each of
the Colorado Interstate Gas Company (CIG) and Southern Natural Gas Company (SNG)
pipelines, which operate in the Rocky Mountain and Southeastern regions of the United
States, respectively. El Paso Corporation will continue to own the other 90 percent of CIG
and SNG. For more information about El Paso Pipeline Partners, visit
http://www.eppipelinepartners.com.El Paso Corporation (NYSE: EP) provides natural gas and related energy products in a safe,
efficient, and dependable manner. The company owns North Americas largest interstate
natural gas pipeline system and one of North Americas largest independent natural gas
producers. For more information, visit http://www.elpaso.com.Cautionary Statement Regarding Forward-Looking StatementsThis release includes forward-looking statements and projections, made in reliance on the
safe harbor provisions of the Private Securities Litigation Reform Act of 1995. The
company has made every reasonable effort to ensure that the information and assumptions on
which these statements and projections are based are current, reasonable, and complete.
However, a variety of factors could cause actual results to differ materially from the
projections, anticipated results or other expectations expressed in this release,
including, without limitation, we may not be able to raise the planned amount of capital,
and we may not be able to complete the proposed actions on the timetable indicated. No
assurance can be given as to the value of the master limited partnership, the price at
which its securities may trade, or whether a liquid market for its securities will develop
or be maintained. In addition, the company and the master limited partnership will be
subject to the other risk factors described in the companys (and its affiliates)
Securities and Exchange Commission filings. While the company makes these statements and
projections in good faith, neither the company nor its management can guarantee that
anticipated future results will be achieved. Reference must be made to those filings for
additional important factors that may affect actual results. The company assumes no
obligation to publicly update or revise any forward-looking statements made herein or any
other forward-looking statements made by the company, whether as a result of new
information, future events, or otherwise.SOURCE El Paso Corporation
11/21/2007CONTACT: Investor and Public Relations, Bruce L. Connery, Vice President, +1-713-420-5855,
or Investor Relations, Bill Baerg, Manager, +1-713-420-2906, both of El Paso Corporation,
fax, +1-713-420-44174823 11/21/2007 10:28 EST http://www.prnewswire.com