Filed by Kinder Morgan, Inc.

Pursuant to Rule 425 Under the Securities Act of 1933

And Deemed Filed Pursuant to Rule 14a-12

Under the Securities Exchange Act of 1934

Subject Company:  El Paso Corporation

Commission File No.:  001-14365

IMPORTANT ADDITIONAL INFORMATION WILL BE FILED WITH THE SEC

Kinder Morgan, Inc. (“KMI”) plans to file with the SEC a Registration Statement on Form S-4 in connection with the proposed transaction, and KMI and El Paso Corporation (“EP”) plan to file with the SEC and mail to their respective stockholders a Joint Proxy/Information Statement/Prospectus in connection with the proposed transaction. THE REGISTRATION STATEMENT AND THE JOINT PROXY/INFORMATION STATEMENT/PROSPECTUS WILL CONTAIN IMPORTANT INFORMATION ABOUT KMI, EP, THE PROPOSED TRANSACTION AND RELATED MATTERS.  INVESTORS AND SECURITY HOLDERS ARE URGED TO READ THE REGISTRATION STATEMENT AND THE JOINT PROXY/INFORMATION STATEMENT/PROSPECTUS CAREFULLY WHEN THEY BECOME AVAILABLE.  Investors and security holders will be able to obtain free copies of the Registration Statement and the Joint Proxy/Information Statement/Prospectus and other documents filed with the SEC by KMI and EP through the web site maintained by the SEC at www.sec.gov.  In addition, investors and security holders will be able to obtain free copies of the Registration Statement and the Joint Proxy/Information Statement/Prospectus by phone, e-mail or written request by contacting the investor relations department of KMI or EP at the following:

PARTICIPANTS IN THE SOLICITATION

KMI and EP, and their respective directors and executive officers, may be deemed to be participants in the solicitation of proxies in respect of the proposed transactions contemplated by the merger agreement.  Information regarding KMI’s directors and executive officers is contained in KMI’s Form 10-K for the year ended December 31, 2010, which has been filed with the SEC.  Information regarding EP’s directors and executive officers is contained in EP’s Form 10-K for the year ended December 31, 2010 and its proxy statement dated March 29, 2011, which are filed with the SEC.  A more complete description will be available in the Registration Statement and the Joint Proxy/Information Statement/Prospectus.

SAFE HARBOR FOR FORWARD-LOOKING STATEMENTS

Statements in this document regarding the proposed transaction between KMI and EP, the expected timetable for completing the proposed transaction, future financial and operating results, benefits and synergies of the proposed transaction, future opportunities for the combined company, the sale of EP’s exploration and production assets, the possible drop-down of assets and any other statements about KMI or EP managements’ future expectations, beliefs, goals, plans or prospects constitute forward looking statements within the meaning of the Private Securities Litigation Reform Act of 1995.  Any statements that are not statements of historical fact (including statements containing the words “believes,” “plans,” “anticipates,” “expects,” estimates and similar expressions) should also be considered to be forward looking statements.  There are a number of important factors that

could cause actual results or events to differ materially from those indicated by such forward looking statements, including: the ability to consummate the proposed transaction; the ability to obtain the requisite regulatory approvals, shareholder approvals and the satisfaction of other conditions to consummation of the transaction; the possibility that financing might not be available on the terms committed; the ability to consummate contemplated asset sales; the ability of KMI to successfully integrate EP’s operations and employees; the ability to realize anticipated synergies and cost savings; the potential impact of announcement of the transaction or consummation of the transaction on relationships, including with employees, suppliers, customers and competitors; the ability to achieve revenue growth; national, international, regional and local economic, competitive and regulatory conditions and developments; technological developments; capital and credit markets conditions; inflation rates; interest rates; the political and economic stability of oil producing nations; energy markets, including changes in the price of certain commodities; weather conditions; environmental conditions; business and regulatory or legal decisions; the pace of deregulation of retail natural gas and electricity and certain agricultural products; the timing and success of business development efforts; terrorism; and the other factors described in KMI’s and EP’s Annual Reports on Form 10-K for the year ended December 31, 2010 and their most recent quarterly reports filed with the SEC.  KMI and EP disclaim any intention or obligation to update any forward looking statements as a result of developments occurring after the date of this document.