El Paso Pipeline Partners Announces Exercise of Underwriters' Option to Purchase Additional Common Units

HOUSTON, TX, Jun 30 (MARKET WIRE) --
El Paso Pipeline Partners, L.P. (NYSE: EPB) today announced that the
underwriters of its common unit offering exercised in full their option
to purchase 1,650,000 additional common units at $17.50 per unit. The
option was granted in connection with the partnership's public offering
of 11,000,000 common units, which was completed on June 15, 2009. The
closing of the over-allotment option is expected to occur on July 1,
2009. Total net proceeds from the offering of the 12,650,000 common
units, including the general partner's proportionate capital
contribution, are approximately $216.5 million and will be used by El
Paso Pipeline Partners for general partnership purposes, including
potential future acquisitions and growth capital expenditures. Pending the
use of the proceeds for other purposes, the partnership may apply some or
all of the net proceeds to reduce outstanding borrowings under its
revolving credit facility.

Morgan Stanley & Co. Incorporated, Barclays Capital Inc., Citigroup Global
Markets Inc. and UBS Securities LLC acted as joint book-running managers
of the offering. Credit Suisse Securities (USA) LLC, Goldman, Sachs & Co.
and Raymond James & Associates, Inc. acted as co-managing underwriters of
the offering. A copy of the final prospectus supplement and accompanying
base prospectus relating to the offering may be obtained from any of the
underwriters, including:

Morgan Stanley & Co. Incorporated
Attn: Prospectus Department
180 Varick Street, 2nd Floor
New York, NY 10014
Email: prospectus@morganstanley.com
Telephone: 866-718-1649

Barclays Capital Inc.
c/o Broadridge, Integrated Distribution Services
1155 Long Island Avenue
Edgewood, NY 11717
Email: Barclaysprospectus@broadridge.com
Telephone: 888-603-5847

Citigroup Global Markets Inc.
Attn: Prospectus Department
Brooklyn Army Terminal
140 58th Street, 8th Floor
Brooklyn, NY 11220
Email: batprospectusdept@citi.com
Telephone: 800-831-9146

UBS Securities LLC
Attn: Prospectus Dept.
299 Park Avenue
New York, NY 10171
Telephone: 888-827-7275

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

This press release shall not constitute an offer to sell or the
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 an 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 meeting the requirements of Section 10
of the Securities Act of 1933, as amended.

El Paso Pipeline Partners is a Delaware limited partnership formed by El
Paso Corporation to own and operate natural gas transportation pipelines
and storage assets. El Paso Pipeline Partners owns Wyoming Interstate
Company, an interstate pipeline system serving the Rocky Mountain region,
a 40 percent general partner interest in Colorado Interstate Gas Company,
which operates in the Rocky Mountain region, and a 25 percent general
partner 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

Statements about the offering may be forward-looking statements as defined
under federal law. These forward-looking statements rely on a number of
assumptions concerning future events and are subject to a number of
uncertainties and factors, many of which are outside the control of El
Paso Pipeline Partners, and a variety of risks that could cause results to
differ materially from those expected by the management of El Paso
Pipeline Partners. El Paso Pipeline Partners undertakes no obligation to
update or revise forward-looking statements to reflect changed
assumptions, the occurrence of unanticipated events or changes to future
operating results over time.

Note to Non-United States Investors

This release is intended to be a qualified notice under Treasury
Regulation Section 1.1446-4(b). Brokers and nominees should treat one
hundred percent of El Paso Pipeline Partners' distributions to foreign
investors as being attributable to income that is effectively connected
with a United States trade or business. Accordingly, El Paso Pipeline
Partners' distributions to Non-United States investors are subject to
federal income tax withholding at the highest applicable effective tax
rate.

Contacts:
Investor & Media Relations
Bruce L. Connery
Vice President
Office: (713) 420-5855

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