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El Paso Pipeline Partners Announces Pricing of $425 Million Debt Offering

March 25, 2010

El Paso Pipeline Partners Operating Company, L.L.C., a wholly owned operating subsidiary of El Paso Pipeline Partners, L.P. (NYSE: EPB), today announced it has priced $425 million of its 6.50 percent senior notes due 2020. Net proceeds from the offering will be used as partial consideration for the previously announced acquisition of a 51 percent member interest in each of Southern LNG Company, L.L.C. and El Paso Elba Express Company, L.L.C. from El Paso Corporation (NYSE: EP).

Morgan Stanley & Co. Incorporated, RBS Securities Inc., BNP Paribas Securities Corp. and Scotia Capital (USA) Inc. are acting as joint book-running managers of the offering. A copy of the prospectus supplement and prospectus relating to this offering may be obtained from any of the underwriters, including:

Morgan Stanley & Co. Incorporated 180 Varick Street, 2nd Floor New York, NY 10014 Attn: Prospectus Department Email: prospectus@morganstanley.com Telephone: 1-866-718-1469

RBS Securities Inc. 600 Washington Boulevard Stamford, CT 06901 Attn: Debt Syndicate Telephone: 1-866-884-2071

BNP Paribas Securities Corp. 787 Seventh Avenue New York, NY 10019 Attn: Syndicate Desk, 7th Floor Telephone: 1-800-854-8674

Scotia Capital (USA) Inc. One Liberty Plaza New York, NY 10006 Telephone: 1-212-233-6459

You may also obtain these documents for free when they are available by visiting EDGAR on the Securities and Exchange Commission's Web site at www.sec.gov.

This news release does not constitute an offer to sell or a solicitation of an offer to buy the securities described herein, nor shall there be any sale of these securities in any state or jurisdiction in which such offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of any such state or jurisdiction. The offering may be made only by means of a prospectus and related prospectus supplement.

El Paso Pipeline Partners, L.P. is a Delaware limited partnership formed by El Paso Corporation to own and operate natural gas transportation pipelines and storage assets. El Paso Corporation owns approximately 60 percent of the limited partner units, and the 2 percent general partner interest. El Paso Pipeline Partners, L.P. owns Wyoming Interstate Company, an interstate pipeline system serving the Rocky Mountain region, a 58 percent interest in Colorado Interstate Gas Company which operates in the Rocky Mountain region, and a 25 percent interest in Southern Natural Gas Company, which operates in the southeastern region of the United States. For more information about El Paso Pipeline Partners, visit www.eppipelinepartners.com.

Cautionary Statement Regarding Forward-Looking Statements

This press release includes forward-looking statements regarding future events. All forward-looking statements are based on the Partnership's beliefs as well as assumptions made by and information currently available to the Partnership. These statements reflect the Partnership's current views with respect to future events and are subject to various risks, uncertainties and assumptions. These risks, uncertainties and assumptions are discussed in El Paso Pipeline Partners, L.P.'s 2009 annual report on Form 10-K and subsequent filings with the Securities and Exchange Commission.

Contact:

Investor-Media Relations
Bruce Connery, Vice President
(713) 420-5855

Media Relations
Bill Baerg, Manager
(713) 420-2906