X0303 4 2011-03-31 0001326160 Duke Energy CORP DUK 0001471062 Reinsch E. James 526 SOUTH CHURCH STREET CHARLOTTE NC 28202 1 Phantom Stock Director Savings Plan 2011-03-31 4 A 0 689 18.15 A Common Stock 689 12260 D Converts to Common Stock on a 1-for-1 basis. Generally payable upon reporting person's termination of service. Expiration date not applicable. Includes additional securities acquired pursuant to regular dividend reinvestments. /s/ David S. Maltz, attorney-in-fact for E. James Reinsch 2011-04-04