Explanatory Note

The purpose of this Current Report on Form 8-K/A is to amend the Current Report on Form 8-K of Kinder Morgan Energy Partners, L.P. (the "Partnership"), filed with the Securities and Exchange Commission on January 4, 2013 (the "Original Filing") and to correct a typographical error that was contained solely in the body of the Original Filing in Item 1.01 under the heading "Merger Agreement". Capitalized terms used herein have the meaning ascribed to them in the Original Filing.

The Original Filing reported, among other things, that the completion of the Merger is subject to satisfaction or waiver of the following condition: the conversion of (A) 12,897,029 Series A convertible preferred units (the "Series A Preferred Units") outstanding as of the date of the Merger Agreement into an aggregate of 14,186,731 Common Units and (B) any Series A Preferred Units issued as part of a distribution in kind after the date of the Merger Agreement into a number of Common Units equal to the product of 100% and the number of Series A Preferred Units so issued. The conversion percentage of the Series A Preferred Units is 110% (consistent with what is reflected in the Merger Agreement) as opposed to 100%.

The Original Filing also reported that, on January 29, 2013, the Partnership, together with Parent GP and Copano, entered into a voting agreement with TPG Copenhagen, L.P. ("TPG") (the "Voting Agreement"). Pursuant to and subject to the terms of the Voting Agreement, TPG has agreed to, among other things:
(i) vote all of its Series A Preferred Units and Common Units in favor of the approval and adoption of the Merger Agreement and the Merger and (ii) convert its Series A Preferred Units to Common Units effective immediately prior to the effective time of the Merger.

Except as specifically amended herein, the Original Filing remains unchanged.

IMPORTANT ADDITIONAL INFORMATION WILL BE FILED WITH THE SEC

The Partnership plans to file with the SEC a Registration Statement on Form S-4 in connection with the transaction. The Partnership and Copano plan to file with the SEC and Copano plans to mail to its unitholders a Proxy Statement/Prospectus in connection with the transaction. The Registration Statement and the Proxy Statement/Prospectus will contain important information about the Partnership, Copano, the transaction and related matters. INVESTORS AND SECURITY HOLDERS ARE URGED TO READ THE REGISTRATION STATEMENT AND THE PROXY STATEMENT/PROSPECTUS CAREFULLY WHEN THEY ARE AVAILABLE.

Investors and security holders will be able to obtain free copies of the Registration Statement and the Proxy Statement/Prospectus and other documents filed with the SEC by the Partnership and Copano through the web site maintained by the SEC at www.sec.gov or by phone, email or written request by contacting the investor relations department of the Partnership or Copano at the following:

           Partnership                         Copano
Address:   1001 Louisiana Street, Suite 1000   1200 Smith Street, Suite 2300
           Houston, Texas 77002                Houston, Texas 77002
           Attention: Investor Relations       Attention: Investor Relations
Phone:     (713) 369-9490                      (713) 621-9547
E-mail:    kmp_ir@kindermorgan.com             ir@copano.com

PARTICIPANTS IN THE SOLICITATION

The Partnership and Copano, and their respective directors and executive officers, may be deemed to be participants in the solicitation of proxies in respect of the transactions contemplated by the Merger Agreement. Information regarding the directors and executive officers of the Partnership's general partner and Kinder Morgan Management, LLC, the delegate of the Partnership's general partner, is contained in the Partnership's Form 10-K for the year ended December 31, 2011, which has been filed with the SEC. Information regarding Copano's directors and executive officers is contained in Copano's Form 10-K for the year ended December 31, 2011 and its proxy statement filed on April 5, 2012, which are filed with the SEC. A more complete description will be available in the Registration Statement and the Proxy Statement/Prospectus.

SAFE HARBOR FOR FORWARD-LOOKING STATEMENTS

Statements in this document regarding the proposed transaction between the Partnership and Copano, 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 and any other statements about the Partnership or Copano management's 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 requisite regulatory and unitholder approval and the satisfaction of the other conditions to the consummation of the proposed transaction; the ability of the Partnership to successfully integrate Copano's operations and employees and realize anticipated synergies and cost savings; the potential impact of the announcement or consummation of the proposed transaction on relationships, including with employees, suppliers, customers and competitors; the ability to achieve revenue growth; price volatility and market demand for natural gas and natural gas liquids; higher construction costs or project delays due to inflation, limited availability of required resources or the effects of environmental, legal or other uncertainties; the ability of the combined company to continue to obtain new sources of natural gas supply; the impact on volumes and resulting cash flow of technological, economic and other uncertainties inherent in estimating future production, producers' ability to drill and successfully complete and attract new natural gas supplies and the availability of downstream transportation systems and other facilities for natural gas and NGLs; the effects of government regulations and policies and of the pace of deregulation of retail natural gas; national, international, regional and local economic or

competitive conditions and developments; capital and credit markets conditions; interest rates; the political and economic stability of oil producing nations; energy markets, including changes in the price of certain commodities; weather, alternative energy sources, conservation and technological advances that may affect price trends and demand; business and regulatory or legal decisions; the timing and success of business development efforts; acts of nature, accidents, sabotage, terrorism or other similar acts causing damage greater than the insurance coverage limits of the combined company; and the other factors and financial, operational and legal risks or uncertainties described in the Partnership's and Copano's Annual Reports on Form 10-K for the year ended December 31, 2011 and their most recent quarterly report filed with the SEC. The Partnership and Copano disclaim any intention or obligation to update any forward-looking statements as a result of developments occurring after the date of this document.