Duke Energy CORP — Capital/Financing Update 2013

Mar 26, 2013

Filed under Rule 424(b)(3), Registration Statement No. 333-169633
Pricing Supplement No’s 8 - Dated
Monday, March 25, 2013 (Prospectus Dated September 29, 2010 and Prospectus Supplement Dated November 13, 2012)
CUSIP Number	Principal Amount	Selling Price	Gross Concession	Net Proceeds	Coupon Type	Coupon Rate	Coupon Frequency	Maturity Date	1st Coupon Date	1st Coupon Amount	Survivor’s Option	Product Ranking
26442KAH9	[ ]	100.000%	2.300%	[ ]	Fixed	3.250%	Quarterly	06/15/2027	06/15/2013	$6.41	Yes	Senior Unsecured Notes
Redemption Information: Non-Callable

Duke Energy Corporation	Duke Energy Corporation
Settlement Date: Thursday, April 4, 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.