Duke Energy (DUK) DEFA14A Additional proxy soliciting materials

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
SCHEDULE 14A
Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.     )
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o	Definitive Proxy Statement
x	Definitive Additional Materials
o	Soliciting Material Pursuant to §240.14a-12
DUKE ENERGY CORPORATION
(Name of Registrant as Specified In Its Charter)
(Name of Person(s) Filing Proxy Statement, if other than the Registrant)
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M41570-P19647 You are receiving this communication because you hold shares in the above named company. This is not a ballot. You cannot use this notice to vote these shares. This communication presents only an overview of the more complete proxy materials that are available to you on the Internet. You may view the proxy materials online at www.proxyvote.com or easily request a paper copy (see reverse side). We encourage you to access and review all of the important information contained in the proxy materials before voting. DUKE ENERGY CORPORATION *** Exercise Your Right to Vote *** Important Notice Regarding the Availability of Proxy Materials for the Shareholder Meeting to Be Held on May 3, 2012. DUKE ENERGY CORPORATION 550 SOUTH TRYON ST. CHARLOTTE, NC 28202 Meeting Information Meeting Type: Annual Meeting For holders as of: March 5, 2012 Date: May 3, 2012 Time: 10:00 a.m. Location: O.J. Miller Auditorium 526 South Church Street Charlotte, North Carolina 28202 See the reverse side of this notice to obtain proxy materials and voting instructions.

M41571-P19647 How To Vote Please Choose One of the Following Voting Methods Vote In Person: Many shareholder meetings have attendance requirements including, but not limited to, the possession of an attendance ticket issued by the entity holding the meeting. Please check the meeting materials for any special requirements for meeting attendance. At the meeting, you will need to request a ballot to vote these shares. Vote By Internet: To vote now by Internet, go to www.proxyvote.com. Have the information that is printed in the box marked by the arrow available and follow the instructions. Vote By Mail: You can vote by mail by requesting a paper copy of the materials, which will include a proxy card. Requests, instructions and other inquiries sent to this e-mail address will NOT be forwarded to your investment advisor. Please make the request as instructed above on or before April 19, 2012 to facilitate timely delivery. How to View Online: Have the information that is printed in the box marked by the arrow (located on the following page) and visit: www.proxyvote.com. How to Request and Receive a PAPER or E-MAIL Copy: If you want to receive a paper or e-mail copy of these documents, you must request one. There is NO charge for requesting a copy. Please choose one of the following methods to make your request: 1) BY INTERNET: www.proxyvote.com 2) BY TELEPHONE: 1-800-579-1639 3) BY E-MAIL*: sendmaterial@proxyvote.com * If requesting materials by e-mail, please send a blank e-mail with the information that is printed in the box marked by the arrow (located on the following page) in the subject line. Before You Vote How to Access the Proxy Materials NOTICE AND PROXY STATEMENT ANNUAL REPORT Proxy Materials Available to VIEW or RECEIVE: . XXXX XXXX XXXX . XXXX XXXX XXXX . XXXX XXXX XXXX

Voting Items M41572-P19647 The Board of Directors recommends a vote "For All" Director nominees. The Board of Directors recommends a vote "For" Proposals 2, 3, and 4. 01) William Barnet, III 02) G. Alex Bernhardt, Sr. 03) Michael G. Browning 04) Daniel R. DiMicco 05) John H. Forsgren 06) Ann Maynard Gray 07) James H. Hance, Jr. 08) E. James Reinsch 09) James T. Rhodes 10) James E. Rogers 11) Philip R. Sharp 2. Ratification of Deloitte & Touche LLP as Duke Energy Corporation's independent public accountant for 2012 1. Election of directors: 3. Advisory vote to approve Duke Energy Corporation's named executive officer compensation 5. Shareholder proposal regarding the issuance of a report on the financial risks of continued reliance on coal 6. Shareholder proposal regarding an amendment to our organizational documents to require majority voting for the election of directors The Board of Directors recommends a vote "Against" Proposals 5 and 6. 4. Amendment of the Amended and Restated Certificate of Incorporation of Duke Energy Corporation

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