424B3

Filed under Rule 424(b)(3), Registration Statement No. 333-169633

Pricing Supplement No 13 - Dated Friday, June 21, 2013 (Prospectus Dated September 29, 2010 and Prospectus Supplement Dated November 13, 2012)

CUSIP

Number

  Principal
Amount
    Selling
Price
    Gross
Concession
    Net
Proceeds
   

Interest

Rate

Basis

  Index
Spread Maturity
 

Initial

Interest

Rate

 

Interest

Reset

Dates

 

Maximum

Interest

Rate

 

Mimimum

Interest

Rate

 

Day

Count

Basis

  Interest
Payment
Frequency
    Maturity
Date
    1st
Interest
Payment
Date
    Survivor’s
Option

26442KAN6

    [                 100.000     1.800     [               LIBOR   1.00%  3 Months   LIBOR in effect on 07/03/13  

Mar and Jun and

Sep and

Dec 15th of each year, subject

to adjustment

pursuant to the following

business day convention

  N/A   N/A   Actual/360     Quarterly        09/15/2023        09/15/2013      Yes

Floating Details:

Redemption Information: Non-Callable

Duke Energy Corporation   Trade Date: Monday, July 1, 2013 @ 12:00 PM ET    Duke Energy Corporation
  Settlement Date: Friday, July 5, 2013    Duke Energy InterNotes
  Minimum Denomination/Increments: $1,000.00/$1,000.00    Due One Year or More from Date of Issue
  Initial trades settle flat and clear SDFS: DTC Book Entry only    Prospectus Supplement Dated November 13, 2012
  DTC Number 0235 via RBC Dain Rauscher Inc.    to Prospectus Dated September 29, 2010
  Agents: BofA Merrill Lynch, Incapital, LLC, Citigroup, Edward D. Jones & Co., L.P., Morgan Stanley, RBC Capital Markets, LLC, UBS Investment Bank, Wells Fargo Advisors, LLC   
  If the maturity date or an interest payment date for any note is not a business day (as such term is defined in the Prospectus Supplement), principal, premium, if any, and interest for that note is paid on the next business day, and no interest will accrue from, and after, the maturity date or interest payment date.   
  Investors should read this pricing supplement in conjunction with the Prospectus and Prospectus Supplement.   
  InterNotes® is a registered trademark of Incapital Holdings LLC. All Rights Reserved.