8-K

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the

Securities Exchange Act of 1934

Date of Report (Date of earliest event reported):  August 22, 2011

DUKE ENERGY CORPORATION

(Exact Name of Registrant as Specified in its Charter)

Delaware	001-32853	20-2777218
(State or Other Jurisdiction of Incorporation)	(Commission File Number)	(IRS Employer Identification No.)

550 S. Tryon Street, Charlotte, North Carolina 28202-4200

(Address of Principal Executive Offices, including Zip Code)

(704) 594-6200

(Registrant’s telephone number, including area code)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

oWritten communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

oSoliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

oPre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

oPre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Item 8.01.Other Events.

On August 22, 2011, Duke Energy Corporation (the “Company”) entered into an underwriting agreement, dated as of August 22, 2011 (the “Underwriting Agreement”), with BNY Mellon Capital Markets, LLC, Citigroup Global Markets Inc., Goldman, Sachs & Co. and UBS Securities LLC, as representatives of the several underwriters named therein (the “Underwriters”), pursuant to which the Company agreed to issue and sell to the Underwriters $500,000,000 aggregate principal amount of the Company’s 3.55% Senior Notes due 2021 (the “Securities”).  The Securities will be issued pursuant to an Indenture, dated as of June 3, 2008 (the “Indenture”), by and between the Company and The Bank of New York Mellon Trust Company, N.A., as trustee (the “Trustee”), as amended and supplemented by various supplemental indentures thereto, including the Fifth Supplemental Indenture, which will be dated as of August 25, 2011 (the “Fifth Supplemental Indenture”), between the Company and the Trustee, relating to the Securities.  The disclosure in this Item 8.01 is qualified in its entirety by the provisions of the Indenture, the Fifth Supplemental Indenture, a form of which is attached hereto as Exhibit 4.1, and the Underwriting Agreement, which is attached hereto as Exhibit 99.1.  Such exhibits are incorporated herein by reference.  Also, in connection with the issuance and sale of the Securities, the Company is filing a legal opinion regarding the validity of the Securities as Exhibit 5.1 to this Form 8-K for the purpose of incorporating the opinion into the Company’s Registration Statement No. 333-169633.

Item 9.01.Financial Statements and Exhibits.

(d)           Exhibits

Exhibit	Description
Exhibit 4.1	Form of Fifth Supplemental Indenture, dated as of August 25, 2011, to the Indenture, dated as of June 3, 2008, between the Company and The Bank of New York Mellon Trust Company, N.A., as Trustee
Exhibit 5.1	Opinion regarding validity of the Securities
Exhibit 23.1	Consent (included as part of Exhibit 5.1)
Exhibit 99.1	Underwriting Agreement, dated as of August 22, 2011, between the Company and BNY Mellon Capital Markets, LLC, Citigroup Global Markets Inc., Goldman, Sachs & Co. and UBS Securities LLC, as representatives of the several underwriters named therein

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SIGNATURE

Pursuant to the requirements of the Securities and Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

	DUKE ENERGY CORPORATION
Date: August 25, 2011
	By:	/s/ Robert T. Lucas III, Esq.
		Name:	Robert T. Lucas III, Esq.
		Title:	Deputy General Counsel and
			Assistant Secretary

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EXHIBIT INDEX

Exhibit	Description
Exhibit 4.1	Form of Fifth Supplemental Indenture, dated as of August 25, 2011, to the Indenture, dated as of June 3, 2008, between the Company and The Bank of New York Mellon Trust Company, N.A., as Trustee
Exhibit 5.1	Opinion regarding validity of the Securities
Exhibit 23.1	Consent (included as part of Exhibit 5.1)
Exhibit 99.1	Underwriting Agreement, dated as of August 22, 2011, between the Company and BNY Mellon Capital Markets, LLC, Citigroup Global Markets Inc., Goldman, Sachs & Co. and UBS Securities LLC, as representatives of the several underwriters named therein

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EX-4.1

Exhibit 4.1

DUKE ENERGY CORPORATION

TO

THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A.

Trustee

Fifth Supplemental Indenture

Dated as of August 25, 2011

$500,000,000 3.55% SENIOR NOTES DUE 2021

TABLE OF CONTENTS(1)

		Page
ARTICLE I
3.55% SENIOR NOTES DUE 2021
Section 1.01	Establishment	1
Section 1.02	Definitions	2
Section 1.03	Payment of Principal and Interest	2
Section 1.04	Denominations	3
Section 1.05	Global Securities	3
Section 1.06	Redemption	4
Section 1.07	Paying Agent	5

ARTICLE II

MISCELLANEOUS PROVISIONS

Section 2.01	Recitals by the Corporation	5
Section 2.02	Ratification and Incorporation of Original Indenture	5
Section 2.03	Executed in Counterparts	5

Exhibit A FORM OF 3.55% SENIOR NOTE DUE 2021

Exhibit B CERTIFICATE OF AUTHENTICATION

(1)  This Table of Contents does not constitute part of the Indenture or have any bearing upon the interpretation of any of its terms and provisions.

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THIS FIFTH SUPPLEMENTAL INDENTURE is made as of the 25th day of August 2011, by and between DUKE ENERGY CORPORATION, a Delaware corporation, having its principal office at 550 S. Tryon Street, Charlotte, North Carolina 28202 (the “Corporation”), and The Bank of New York Mellon Trust Company, N.A. (formerly known as The Bank of New York Trust Company, N.A.), a national banking association, as Trustee (herein called the “Trustee”).

W I T N E S S E T H:

WHEREAS, the Corporation has heretofore entered into an Indenture, dated as of June 3, 2008 (the “Original Indenture”), with The Bank of New York Mellon Trust Company, N.A., as Trustee;

WHEREAS, the Original Indenture is incorporated herein by this reference and the Original Indenture, as it may be amended and supplemented to the date hereof, including by this Fifth Supplemental Indenture, is herein called the “Indenture”;

WHEREAS, under the Indenture, a new series of Securities may at any time be established in accordance with the provisions of the Indenture and the terms of such series may be described by a supplemental indenture executed by the Corporation and the Trustee;

WHEREAS, the Corporation hereby proposes to create under the Indenture an additional series of Securities;

WHEREAS, additional Securities of other series hereafter established, except as may be limited in the Indenture as at the time supplemented and modified, may be issued from time to time pursuant to the Indenture as at the time supplemented and modified; and

WHEREAS, all conditions necessary to authorize the execution and delivery of this Fifth Supplemental Indenture and to make it a valid and binding obligation of the Corporation have been done or performed.

NOW, THEREFORE, in consideration of the agreements and obligations set forth herein and for other good and valuable consideration, the sufficiency of which is hereby acknowledged, the parties hereto hereby agree as follows:

ARTICLE I

    3.55% SENIOR NOTES DUE 2021

Section 1.01Establishment.  There is hereby established a new series of Securities to be issued under the Indenture, to be designated as the Corporation’s 3.55% Senior Notes due 2021 (the “Notes”).

There are to be authenticated and delivered $500,000,000 principal amount of the Notes, and no further Notes shall be authenticated and delivered except as provided by Section 304, 305, 306, 906 or 1106 of the Original Indenture and the last paragraph of Section 301 thereof.  The Notes shall be issued in fully registered form without coupons.

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The Notes shall be in substantially the form set out in Exhibit A hereto, and the form of the Trustee’s Certificate of Authentication for the Notes shall be in substantially the form set forth in Exhibit B hereto.

Each Note shall be dated the date of authentication thereof and shall bear interest from the date of original issuance thereof or from the most recent Interest Payment Date to which interest has been paid or duly provided for.

Section 1.02Definitions.  The following defined terms used in this Article I shall, unless the context otherwise requires, have the meanings specified below for purposes of the Notes.  Capitalized terms used herein for which no definition is provided herein shall have the meanings set forth in the Original Indenture.

“Business Day” means any day other than a Saturday or Sunday that is neither a Legal Holiday nor a day on which banking institutions in New York, New York are authorized or required by law, regulation or executive order to close, or a day on which the Corporate Trust Office is closed for business.

“Interest Payment Date” means each March 15 and September 15 of each year, commencing March 15, 2012.

“Legal Holiday” means any day that is a legal holiday in New York, New York.

“Original Issue Date” means August 25, 2011.

“Regular Record Date” means, with respect to each Interest Payment Date, the close of business on the 15th calendar day prior to such Interest Payment Date (whether or not a Business Day).

“Stated Maturity” means September 15, 2021.

Section 1.03Payment of Principal and Interest.  The principal of the Notes shall be due at Stated Maturity (unless earlier redeemed).  The unpaid principal amount of the Notes shall bear interest at the rate of 3.55% per annum until paid or duly provided for, such interest to accrue from August 25, 2011 or from the most recent Interest Payment Date to which interest has been paid or duly provided for.  Interest shall be paid semi-annually in arrears on each Interest Payment Date to the Person or Persons in whose name the Notes are registered on the Regular Record Date for such Interest Payment Date; provided that interest payable at the Stated Maturity or on a Redemption Date as provided herein shall be paid to the Person to whom principal is payable.  Any such interest that is not so punctually paid or duly provided for shall forthwith cease to be payable to the Holders on such Regular Record Date and may either be paid to the Person or Persons in whose name the Notes are registered at the close of business on a Special Record Date for the payment of such defaulted interest to be fixed by the Trustee (“Special Record Date”), notice whereof shall be given to Holders of the Notes not less than ten (10) days prior to such Special Record Date, or be paid at any time in any other lawful manner not inconsistent with the requirements of any securities exchange, if any, on which the Notes may be listed, and upon such notice as may be required by any such exchange, all as more fully provided in the Original Indenture.

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Payments of interest on the Notes shall include interest accrued to but excluding the respective Interest Payment Dates.  Interest payments for the Notes shall be computed and paid on the basis of a 360-day year of twelve 30-day months.  In the event that any date on which interest is payable on the Notes is not a Business Day, then payment of the interest payable on such date shall be made on the next succeeding day that is a Business Day (and without any interest or payment in respect of any such delay) with the same force and effect as if made on the date the payment was originally payable.

Payment of principal of, premium, if any, and interest on the Notes shall be made in such coin or currency of the United States of America as at the time of payment is legal tender for payment of public and private debts.  Payments of principal of, premium, if any, and interest on Notes represented by a Global Security shall be made by wire transfer of immediately available funds to the Holder of such Global Security, provided that, in the case of payments of principal and premium, if any, such Global Security is first surrendered to the Paying Agent.  If any of the Notes are no longer represented by a Global Security, (i) payments of principal, premium, if any, and interest due at the Stated Maturity or earlier redemption of such Notes shall be made at the office of the Paying Agent upon surrender of such Notes to the Paying Agent and (ii) payments of interest shall be made, at the option of the Corporation, subject to such surrender where applicable, (A) by check mailed to the address of the Person entitled thereto as such address shall appear in the Security Register or (B) by wire transfer at such place and to such account at a banking institution in the United States as may be designated in writing to the Trustee at least sixteen (16) days prior to the date for payment by the Person entitled thereto.

Section 1.04Denominations.  The Notes shall be issued in denominations of $2,000 or any integral multiple of $1,000 in excess thereof.

Section 1.05Global Securities.  The Notes shall initially be issued in the form of one or more Global Securities registered in the name of the Depositary (which initially shall be The Depository Trust Company) or its nominee.  Except under the limited circumstances described below, Notes represented by such Global Security or Global Securities shall not be exchangeable for, and shall not otherwise be issuable as, Notes in definitive form.  The Global Securities described in this Article I may not be transferred except by the Depositary to a nominee of the Depositary or by a nominee of the Depositary to the Depositary or another nominee of the Depositary or to a successor Depositary or its nominee.

A Global Security shall be exchangeable for Notes registered in the names of persons other than the Depositary or its nominee only if (i) the Depositary notifies the Corporation that it is unwilling or unable to continue as a Depositary for such Global Security and no successor Depositary shall have been appointed by the Corporation within 90 days of receipt by the Corporation of such notification, or if at any time the Depositary ceases to be a clearing agency registered under the Exchange Act at a time when the Depositary is required to be so registered to act as such Depositary and no successor Depositary shall have been appointed by the Corporation within 90 days after it becomes aware of such cessation, (ii) an Event of Default has occurred and is continuing with respect to the Notes and beneficial owners of a majority in aggregate principal amount of the Notes represented by Global Securities advise the Depositary to cease acting as Depositary, or (iii) the Corporation in its sole discretion, and subject to the procedures of the Depositary, determines that such Global Security shall be so exchangeable.

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Any Global Security that is exchangeable pursuant to the preceding sentence shall be exchangeable for Notes registered in such names as the Depositary shall direct.

Section 1.06Redemption.  At any time before June 15, 2021, the Notes may be redeemed at the option of the Corporation, in whole in part and from time to time, on any date (a “Redemption Date”), at a redemption price equal to the greater of (i) 100% of the principal amount of the Notes being redeemed and (ii) the sum of the present values of the remaining scheduled payments of principal and interest thereon (exclusive of interest accrued to such Redemption Date) discounted to such Redemption Date on a semi-annual basis (assuming a 360-day year consisting of twelve 30-day months) at the Treasury Rate plus 25 basis points, plus, in either case, accrued and unpaid interest on the principal amount being redeemed to such Redemption Date.

At any time on or after June 15, 2021, the Notes may be redeemed at the option of the Corporation, in whole or in part and from time to time, at a redemption price equal to 100% of the principal amount of the Notes being redeemed plus accrued and unpaid interest on the principal amount being redeemed to such Redemption Date.

For purposes of the first paragraph of this Section 1.06, the following terms have the following meanings:

“Treasury Rate” means, with respect to any Redemption Date, the rate per annum equal to the semi-annual equivalent yield to maturity or interpolated maturity (on a day count basis) of the Comparable Treasury Issue, assuming a price for the Comparable Treasury Issue (expressed as a percentage of its principal amount) equal to the Comparable Treasury Price for such Redemption Date.  The Treasury Rate shall be calculated on the third Business Day preceding the Redemption Date.

“Comparable Treasury Issue” means the United States Treasury security selected by the Quotation Agent as having an actual or interpolated maturity comparable to the remaining term of the Notes to be redeemed that would be utilized, at the time of selection and in accordance with customary financial practice, in pricing new issues of corporate debt securities of comparable maturity to the remaining term of such Notes.

“Quotation Agent” means a Reference Treasury Dealer appointed by the Corporation.

“Comparable Treasury Price” means, with respect to any Redemption Date, (1) the average of the Reference Treasury Dealer Quotations for such Redemption Date, after excluding the highest and lowest such Reference Treasury Dealer Quotations, or (2) if fewer than four such Reference Treasury Dealer Quotations are obtained, the average of all such Reference Treasury Dealer Quotations.

“Reference Treasury Dealer” means each of Citigroup Global Markets Inc., Goldman, Sachs & Co. and UBS Securities LLC, plus two other financial institutions appointed by the Corporation at the time of any redemption or their respective affiliates which are primary U.S. Government securities dealers in the United States (a “Primary Treasury Dealer”), and their respective successors; provided, however, that if any of the foregoing or their affiliates or

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successors shall cease to be a Primary Treasury Dealer, the Corporation will substitute therefor another Primary Treasury Dealer.

“Reference Treasury Dealer Quotations” means, with respect to each Reference Treasury Dealer and any Redemption Date, the average, as determined by the Quotation Agent, of the bid and asked prices for the Comparable Treasury Issue (expressed in each case as a percentage of its principal amount) quoted in writing to the Quotation Agent by such Reference Treasury Dealer at 5:00 p.m., New York City time, on the third Business Day preceding such Redemption Date.

The Corporation shall notify the Trustee of the redemption price with respect to any redemption occurring before June 15, 2021 promptly after the calculation thereof.  The Trustee shall not be responsible for calculating said redemption price.

If less than all of the Notes are to be redeemed, the Trustee shall select the Notes or portions of Notes to be redeemed by such method as the Trustee shall deem fair and appropriate.  The Trustee may select for redemption Notes and portions of Notes in amounts of $2,000 or any integral multiple of $1,000 in excess thereof.

The Notes shall not have a sinking fund.

Section 1.07Paying Agent.  The Trustee shall initially serve as Paying Agent with respect to the Notes, with the Place of Payment initially being the Corporate Trust Office.

ARTICLE II

MISCELLANEOUS PROVISIONS

Section 2.01Recitals by the Corporation.  The recitals in this Fifth Supplemental Indenture are made by the Corporation only and not by the Trustee, and all of the provisions contained in the Original Indenture in respect of the rights, privileges, immunities, powers and duties of the Trustee shall be applicable in respect of the Notes and of this Fifth Supplemental Indenture as fully and with like effect as if set forth herein in full.

Section 2.02Ratification and Incorporation of Original Indenture.  As supplemented hereby, the Original Indenture is in all respects ratified and confirmed, and the Original Indenture and this Fifth Supplemental Indenture shall be read, taken and construed as one and the same instrument.

Section 2.03Executed in Counterparts.  This Fifth Supplemental Indenture may be executed in several counterparts, each of which shall be deemed to be an original, and such counterparts shall together constitute but one and the same instrument.

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IN WITNESS WHEREOF, each party hereto has caused this instrument to be signed in its name and behalf by its duly authorized officer, all as of the day and year first above written.

Duke Energy Corporation,
By:
	Name: M. Allen Carrick
	Title: Assistant Treasurer
The Bank of New York Mellon Trust Company, N.A., as Trustee
By:
	Name:
	Title:

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EXHIBIT A

FORM OF
    3.55% SENIOR NOTE DUE 2021

No. CUSIP No. 26441C AF2

DUKE ENERGY CORPORATION

   3.55 % SENIOR NOTE DUE 2021

Principal Amount:	$
Regular Record Date:	Close of business on the 15th calendar day prior to the relevant Interest Payment Date (whether or not a Business Day)
Original Issue Date:	August 25, 2011
Stated Maturity:	September 15, 2021
Interest Payment Dates:	Semi-annually on March 15 and September 15 of each year, commencing March 15, 2012.
Interest Rate:	3.55% per annum
Authorized Denomination:	$2,000 or any integral multiple of $1,000 in excess thereof

Duke Energy Corporation, a Delaware corporation (the “Corporation”, which term includes any successor corporation under the Indenture referred to on the reverse hereof), for value received, hereby promises to pay to                       , or registered assigns, the principal sum of                           DOLLARS ($          ) on the Stated Maturity shown above and to pay interest thereon from the Original Issue Date shown above, or from the most recent Interest Payment Date to which interest has been paid or duly provided for, semi-annually in arrears on each Interest Payment Date as specified above, commencing on March 15, 2012 and on the Stated Maturity at the rate per annum shown above until the principal hereof is paid or made available for payment and at such rate on any overdue principal and on any overdue installment of interest.  The interest so payable, and punctually paid or duly provided for, on any Interest Payment Date (other than an Interest Payment Date that is the Stated Maturity or a Redemption Date) will, as provided in the Indenture, be paid to the Person in whose name this 3.55% Senior Note due 2021 (this “Security”) is registered on the Regular Record Date as specified above next preceding such Interest Payment Date; provided that any interest payable at Stated Maturity or on a Redemption Date will be paid to the Person to whom principal is payable.  Except as otherwise provided in the Indenture, any such interest not so punctually paid or duly provided for will forthwith cease to be payable to the Holder on such Regular Record Date and may either be paid to the Person in whose name this Security is registered at the close of business on a Special Record Date for the payment of such Defaulted Interest to be fixed by the Trustee, notice whereof shall be given to Holders of Securities of this series not less than 10 days prior to such Special Record Date, or be paid at any time in any other lawful manner not inconsistent with the requirements of any securities exchange, if any, on which the Securities shall be listed, and upon such notice as may be required by any such exchange, all as more fully provided in the Indenture.

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Payments of interest on this Security will include interest accrued to but excluding the respective Interest Payment Dates.  Interest payments for this Security shall be computed and paid on the basis of a 360-day year of twelve 30-day months and will accrue from  August 25, 2011 or from the most recent Interest Payment Date to which interest has been paid or duly provided for.  In the event that any date on which interest is payable on this Security is not a Business Day, then payment of the interest payable on such date will be made on the next succeeding day that is a Business Day (and without any interest or payment in respect of any such delay) with the same force and effect as if made on the date the payment was originally payable.  “Business Day” means a day other than a Saturday or a Sunday that is neither a Legal Holiday nor a day on which banking institutions in New York, New York are authorized or required by law, regulation or executive order to close, or a day on which the Corporate Trust Office is closed for business.  “Legal Holiday” means any day that is a legal holiday in New York, New York.

Payment of principal of, premium, if any, and interest on the Securities of this series shall be made in such coin or currency of the United States of America as at the time of payment is legal tender for payment of public and private debts.  Payments of principal of, premium, if any, and interest on the Securities of this series represented by a Global Security shall be made by wire transfer of immediately available funds to the Holder of such Global Security, provided that, in the case of payments of principal and premium, if any, such Global Security is first surrendered to the Paying Agent.  If any of the Securities of this series are no longer represented by a Global Security, (i) payments of principal, premium, if any, and interest due at the Stated Maturity or earlier redemption of such Securities shall be made at the office of the Paying Agent upon surrender of such Securities to the Paying Agent, and (ii) payments of interest shall be made, at the option of the Corporation, subject to such surrender where applicable, (A) by check mailed to the address of the Person entitled thereto as such address shall appear in the Security Register or (B) by wire transfer at such place and to such account at a banking institution in the United States as may be designated in writing to the Trustee at least sixteen (16) days prior to the date for payment by the Person entitled thereto.

At any time before June 15, 2021, the Notes may be redeemed at the option of the Corporation, in whole in part and from time to time, on any date (a “Redemption Date”), at a redemption price equal to the greater of (i) 100% of the principal amount of the Notes being redeemed and (ii) the sum of the present values of the remaining scheduled payments of principal and interest thereon (exclusive of interest accrued to such Redemption Date) discounted to such Redemption Date on a semi-annual basis (assuming a 360-day year consisting of twelve 30-day months) at the Treasury Rate plus 25 basis points, plus, in either case, accrued and unpaid interest on the principal amount being redeemed to such Redemption Date.

At any time on or after June 15, 2021, the Notes may be redeemed at the option of the Corporation, in whole or in part and from time to time, at a redemption price equal to 100% of the principal amount of the Notes being redeemed plus accrued and unpaid interest on the principal amount being redeemed to such Redemption Date.

For purposes of the second preceding paragraph, the following terms have the following meanings:

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“Treasury Rate” means, with respect to any Redemption Date for the Securities of this series, the rate per annum equal to the semi-annual equivalent yield to maturity or interpolated maturity (on a day count basis) of the Comparable Treasury Issue, assuming a price for the Comparable Treasury Issue (expressed as a percentage of its principal amount) equal to the Comparable Treasury Price for such Redemption Date.  The Treasury Rate shall be calculated on the third Business Day preceding the Redemption Date.

“Comparable Treasury Issue” means the United States Treasury security selected by the Quotation Agent as having an actual or interpolated maturity comparable to the remaining term of the Securities of this series to be redeemed that would be utilized, at the time of selection and in accordance with customary financial practice, in pricing new issues of corporate debt securities of comparable maturity to the remaining term of such Securities of this series.

“Quotation Agent” means a Reference Treasury Dealer appointed by the Corporation.

“Comparable Treasury Price” means, with respect to any Redemption Date for the Securities of this series, (1) the average of the Reference Treasury Dealer Quotations for such Redemption Date, after excluding the highest and lowest such Reference Treasury Dealer Quotations, or (2) if fewer than four such Reference Treasury Dealer Quotations are obtained, the average of all such Reference Treasury Dealer Quotations.

“Reference Treasury Dealer” means each of Citigroup Global Markets Inc., Goldman, Sachs & Co. and UBS Securities LLC, plus two other financial institutions appointed by the Corporation at the time of any redemption or their respective affiliates which are primary U.S. Government securities dealers in the United States (a “Primary Treasury Dealer”), and their respective successors; provided, however, that if any of the foregoing or their affiliates or successors ceases to be a Primary Treasury Dealer, the Corporation will substitute therefor another Primary Treasury Dealer.

“Reference Treasury Dealer Quotations” means, with respect to each Reference Treasury Dealer and any Redemption Date, the average, as determined by the Quotation Agent, of the bid and asked prices for the Comparable Treasury Issue (expressed in each case as a percentage of its principal amount) quoted in writing to the Quotation Agent by such Reference Treasury Dealer at 5:00 p.m., New York City time, on the third Business Day preceding such Redemption Date.

The Corporation shall notify the Trustee of the redemption price with respect to any redemption occurring before June 15, 2021 promptly after the calculation thereof.  The Trustee shall not be responsible for calculating said redemption price.

Notice of any redemption by the Corporation will be mailed at least 30 days but not more than 60 days before any Redemption Date to each Holder of Securities of this series to be redeemed.  If Notice of a redemption is provided and funds are deposited as required, interest will cease to accrue on and after the Redemption Date on the Securities of this series or portions of Securities of this series called for redemption.  In the event that any Redemption Date is not a Business Day, the Corporation will pay the redemption price on the next Business Day without any interest or other payment in respect of any such delay.  If less than all the Securities of this series are to be redeemed at the option of the Corporation, the Trustee shall select, in such manner as it shall deem fair and appropriate, the Securities of this series to be redeemed in whole

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or in part.  The Trustee may select for redemption Securities of this series and portions of the Securities of this series in amounts of $2,000 or any integral multiple of $1,000 in excess thereof.

In the event of redemption of this Security in part only, a new Security or Securities of this series and of like tenor for the unredeemed portion hereof will be issued in the name of the Holder hereof upon the surrender hereof.

The Securities of this series shall not have a sinking fund.

The Securities of this series shall constitute the direct unsecured and unsubordinated debt obligations of the Corporation and shall rank equally in priority with the Corporation’s existing and future unsecured and unsubordinated indebtedness.

REFERENCE IS HEREBY MADE TO THE FURTHER PROVISIONS OF THIS SECURITY SET FORTH ON THE REVERSE HEREOF, WHICH FURTHER PROVISIONS SHALL FOR ALL PURPOSES HAVE THE SAME EFFECT AS IF SET FORTH AT THIS PLACE.

Unless the certificate of authentication hereon has been executed by the Trustee by manual signature, this Security shall not be entitled to any benefit under the Indenture or be valid or obligatory for any purpose.

IN WITNESS WHEREOF, the Corporation has caused this instrument to be duly executed.

Duke Energy Corporation
By:
	Name:
	Title:

CERTIFICATE OF AUTHENTICATION

This is one of the Securities of the series designated therein referred to in the within-mentioned Indenture.

Dated:	The Bank of New York Mellon Trust Company, N.A., as Trustee
	By:
		Authorized Signatory

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(Reverse Side of Security)

This 3.55% Senior Note due 2021 is one of a duly authorized issue of Securities of the Corporation (the “Securities”), issued and issuable in one or more series under an Indenture, dated as of June 3, 2008, as supplemented (the “Indenture”), between the Corporation and The Bank of New York Mellon Trust Company, N.A. (formerly known as The Bank of New York Trust Company, N.A.), as Trustee (the “Trustee,” which term includes any successor trustee under the Indenture), to which Indenture and all indentures supplemental thereto reference is hereby made for a statement of the respective rights, limitation of rights, duties and immunities thereunder of the Corporation, the Trustee and the Holders of the Securities issued thereunder and of the terms upon which said Securities are, and are to be, authenticated and delivered.  This Security is one of the series designated on the face hereof as 3.55% Senior Notes due 2021 initially in the aggregate principal amount of $500,000,000.  Capitalized terms used herein for which no definition is provided herein shall have the meanings set forth in the Indenture.

If an Event of Default with respect to the Securities of this series shall occur and be continuing, the principal of the Securities of this series may be declared due and payable in the manner, with the effect and subject to the conditions provided in the Indenture.

The Indenture permits, with certain exceptions as therein provided, the amendment thereof and the modification of the rights and obligations of the Corporation and the rights of the Holders of the Securities of all series affected under the Indenture at any time by the Corporation and the Trustee with the consent of the Holders of not less than a majority in principal amount of the Outstanding Securities of all series affected thereby (voting as one class).  The Indenture contains provisions permitting the Holders of not less than a majority in principal amount of the Outstanding Securities of all series with respect to which a default under the Indenture shall have occurred and be continuing (voting as one class), on behalf of the Holders of the Securities of all such series, to waive, with certain exceptions, such default under the Indenture and its consequences.  The Indenture also permits the Holders of not less than a majority in principal amount of the Securities of each series at the time Outstanding, on behalf of the Holders of all Securities of such series, to waive compliance by the Corporation with certain provisions of the Indenture affecting such series.  Any such consent or waiver by the Holder of this Security shall be conclusive and binding upon such Holder and upon all future Holders of this Security and of any Security issued upon the registration of transfer hereof or in exchange hereof or in lieu hereof, whether or not notation of such consent or waiver is made upon this Security.

No reference herein to the Indenture and no provision of this Security or of the Indenture shall alter or impair the obligation of the Corporation, which is absolute and unconditional, to pay the principal of and interest on this Security at the times, place and rate, and in the coin or currency, herein prescribed.

As provided in the Indenture and subject to certain limitations therein set forth, the transfer of this Security is registrable in the Security Register, upon surrender of this Security for registration of transfer at the office or agency of the Corporation for such purpose, duly endorsed by, or accompanied by a written instrument of transfer in form satisfactory to the Corporation and the Security Registrar and duly executed by, the Holder hereof or his attorney duly authorized in writing, and thereupon one or more new Securities of this series, of authorized denominations and of like tenor and for the same aggregate principal amount, will be issued to the designated transferee or transferees.  No service charge shall be made for any such

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registration of transfer or exchange, but the Corporation may require payment of a sum sufficient to cover any tax or other governmental charge payable in connection therewith.

The Indenture contains provisions for defeasance at any time of the entire indebtedness of the Securities of this series and for covenant defeasance at any time of certain covenants in the Indenture upon compliance with certain conditions set forth in the Indenture.

Prior to due presentment of this Security for registration of transfer, the Corporation, the Trustee and any agent of the Corporation or the Trustee may treat the Person in whose name this Security is registered as the owner hereof for all purposes, whether or not this Security be overdue, and neither the Corporation, the Trustee nor any such agent shall be affected by notice to the contrary.

The Securities of this series are issuable only in registered form without coupons in denominations of $2,000 or any integral multiple of $1,000 in excess thereof.  As provided in the Indenture and subject to the limitations therein set forth, Securities of this series are exchangeable for a like aggregate principal amount of Securities of this series of a different authorized denomination, as requested by the Holder surrendering the same upon surrender of the Security or Securities to be exchanged at the office or agency of the Corporation.

This Security shall be governed by, and construed in accordance with, the laws of the State of New York.

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ABBREVIATIONS

The following abbreviations, when used in the inscription on the face of this instrument, shall be construed as though they were written out in full according to applicable laws or regulations:

TEN COM—as tenants in common	UNIF GIFT MIN ACT -            Custodian
	(Cust)                  (Minor)
TEN ENT—as tenants by the entireties
JT TEN—as joint tenants with rights of survivorship and not as tenants in common	Under Uniform Gifts to Minors Act                 (State)

Additional abbreviations may also be used though not on the above list.

FOR VALUE RECEIVED, the undersigned hereby sell(s) and transfer(s) unto (please insert Social Security or other identifying number of assignee)

PLEASE PRINT OR TYPEWRITE NAME AND ADDRESS, INCLUDING POSTAL ZIP CODE OF ASSIGNEE

the within Security and all rights thereunder, hereby irrevocably constituting and appointing agent to transfer said Security on the books of the Corporation, with full power of substitution in the premises.

Dated:
	NOTICE: The signature to this assignment must correspond with the name as written upon the face of the within instrument in every particular without alteration or enlargement, or any change whatever.
	Signature Guarantee:

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SIGNATURE GUARANTEE

Signatures must be guaranteed by an “eligible guarantor institution” meeting the requirements of the Security Registrar, which requirements include membership or participation in the Security Transfer Agent Medallion Program (“STAMP”) or such other “signature guarantee program” as may be determined by the Security Registrar in addition to, or in substitution for, STAMP, all in accordance with the Securities Exchange Act of 1934, as amended.

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EXHIBIT B

CERTIFICATE OF AUTHENTICATION

This is one of the Securities of the series designated therein referred to in the within-mentioned Indenture.

Dated:	The Bank of New York Mellon Trust Company, N.A., as Trustee
	By:
		Authorized Signatory

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EX-5.1

Exhibit 5.1

DUKE ENERGY CORPORATION

550 S. Tryon Street

Charlotte, North Carolina 28202

August 25, 2011

Duke Energy Corporation

550 S. Tryon Street

Charlotte, North Carolina 28202

Re: Duke Energy Corporation $500 million 3.55% Senior Notes due 2021

Ladies and Gentlemen:

I am Deputy General Counsel and Assistant Secretary of Duke Energy Corporation, a Delaware corporation (the “Company”), and in such capacity have acted as counsel to the Company in connection with the public offering of $500 million aggregate principal amount of the Company’s 3.55% Senior Notes due 2021 (the “Securities”).  The Securities are to be issued pursuant to an Indenture, dated as of June 3, 2008 (the “Original Indenture”), by and between the Company and The Bank of New York Mellon Trust Company, N.A., as Trustee (the “Trustee”), as amended and supplemented by various supplemental indentures thereto, including the Fifth Supplemental Indenture, dated as of August 25, 2011, between the Company and the Trustee, relating to the Securities (the “Supplemental Indenture”) (the Original Indenture, as amended and supplemented, being referred to as the “Indenture”).  On August 22, 2011, the Company entered into an Underwriting Agreement (the “Underwriting Agreement”) with BNY Mellon Capital Markets, LLC, Citigroup Global Markets Inc., Goldman, Sachs & Co. and UBS Securities LLC, as representatives of the several underwriters named therein (the “Underwriters”), relating to the sale by the Company to the Underwriters of the Securities.

This opinion is being delivered in accordance with the requirements of Item 601(b)(5) of Regulation S-K under the Securities Act.

I am a member of the bar in the State of North Carolina and my opinions set forth herein are limited to Delaware corporate law and the laws of the State of New York and the federal laws of the United States that, in my experience, are normally applicable to transactions of the type contemplated above and, to the extent that judicial or regulatory orders or decrees or consents, approvals, licenses, authorizations, validations, filings, recordings or registrations with governmental authorities are relevant, to those required under such laws (all of the foregoing being referred to as “Opined on Law”).  I do not express any opinion with respect to the law of any jurisdiction other than Opined on Law or as to the effect of any such non-opined law on the opinions herein stated.  This opinion is limited to the laws, including the rules and regulations, as in effect on the date hereof, which laws are subject to change with possible retroactive effect.

In rendering the opinion set forth herein, I or attorneys under my supervision (with whom I have consulted) have examined originals or copies, certified or otherwise identified by my satisfaction, of:

(a)the registration statement on Form S-3 (File No. 333-169633) of the Company relating to the Securities and other securities of the Company filed on September 29, 2010, with the Securities and Exchange Commission (the “Commission”) under the Securities Act of 1933, as amended (the “Securities Act”), allowing for delayed offerings pursuant to Rule 415 under the Securities Act and the information deemed to be a part of such registration statement as of the date hereof pursuant to Rule 430B of the General Rules and Regulations under the Securities Act (the “Rules and Regulations”) (such registration statement, being hereinafter referred to as the “Registration Statement”);

(b)the prospectus, dated September 29, 2010 relating to the offering of securities of the Company, which forms a part of and is included in the Registration Statement;

(c)the preliminary prospectus supplement, dated August 22, 2011, relating to the offering of the Securities in the form filed with the Commission pursuant to Rule 424(b) of the Rules and Regulations;

(d)the prospectus supplement, dated August 22, 2011, relating to the offering of the Securities in the form filed with the Commission pursuant to Rule 424(b) of the Rules and Regulations;

(e)the Amended and Restated Certificate of Incorporation of the Company, dated as of April 3, 2006, as amended, as certified by the Secretary of State of the State of Delaware;

(f)the Amended and Restated By-laws of the Company, effective as of February 26, 2008, as amended;

(g)an executed copy of the Original Indenture;

(h)the form of Supplemental Indenture;

(i)an executed copy of the Underwriting Agreement;

(j)certificates representing the Securities;

(k)the issuer free writing prospectus issued at or prior to 1:40 p.m. (Eastern time) on August 22, 2011, which the Company was advised is the time of the first contract of sale of the Securities, attached as Schedule C to the Underwriting Agreement and filed with the Commission pursuant to Rule 433(d) of the Securities Act and Section 5(e) of the Underwriting Agreement;

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(l)the Statement of Eligibility under the Trust Indenture Act of 1939, as amended, on Form T-1, of the Trustee;

(m)resolutions of the Board of Directors of the Company, adopted on May 6, 2010, relating to the preparation and filing with the Commission of the Registration Statement and the issuance of the Company’s securities; and

(n)the written consent of the Assistant Treasurer of the Company, dated as of August 22, 2011.

I or attorneys under my supervision (with whom I have consulted) have also examined originals or copies, certified or otherwise identified to my satisfaction, of such records of the Company and such agreements, certificates and receipts of public officials, certificates of officers or other representatives of the Company and others, and such other documents as I or attorneys under my supervision (with whom I have consulted) have deemed necessary or appropriate as a basis for the opinions set forth below.

In my examination, I or attorneys under my supervision (with whom I have consulted) have assumed the legal capacity of all natural persons, the genuineness of all signatures, the authenticity of all documents submitted to me as originals, the conformity to original documents of all documents submitted to me as facsimile, electronic, certified, conformed, or photostatic copies, and the authenticity of the originals of such documents.  In making my examination of executed documents or documents to be executed, I have assumed that the parties thereto, other than the Company had or will have the power, corporate or otherwise, to enter into and perform all obligations thereunder and have also assumed the due authorization by all requisite action, corporate or other, and the execution and delivery by such parties of such documents, and, as to parties other than the Company, the validity and binding effect on such parties.  As to any facts material to this opinion that I or attorneys under my supervision (with whom I have consulted) did not independently establish or verify, we have relied upon statements and representations of officers and other representatives of the Company and others and of public officials.

The opinion set forth below is subject to the following further qualifications, assumptions and limitations:

(i)the validity or enforcement of any agreements or instruments may be limited by applicable bankruptcy, insolvency, reorganization, moratorium or other similar laws affecting creditors’ rights generally and by general principles of equity (regardless of whether enforceability is considered in a proceeding in equity or at law) and

(ii)I do not express any opinion as to the applicability or effect of any fraudulent transfer, preference or similar law on any agreements or instruments or any transactions contemplated thereby.

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Based upon the foregoing and subject to the limitations, qualifications, exceptions and assumptions set forth herein, I am of the opinion that the Securities have been duly authorized and executed by the Company, and that when duly authenticated by the Trustee and issued and delivered by the Company against payment therefore in accordance with the terms of the Underwriting Agreement and the Indenture, the Securities will constitute valid and binding obligations of the Company, enforceable against the Company in accordance with their terms.

I hereby consent to the filing of this opinion with the Commission as Exhibit 5.1 to the Registration Statement through incorporation by reference of a current report on Form 8-K.  I also hereby consent to the use of my name under the heading “Legal Matters” in the prospectus which forms a part of the Registration Statement.  In giving this consent, I do not thereby admit that I am within the category of persons whose consent is required under Section 7 of the Act or the rules and regulations of the Commission promulgated thereunder.  This opinion is expressed as of the date hereof unless otherwise expressly stated, and I disclaim any undertaking to advise you of any subsequent changes in the facts stated or assumed herein or of any subsequent changes in applicable laws.

Very truly yours,

/s/ Robert T. Lucas III, Esq.

Deputy General Counsel,

Assistant Secretary

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EX-99.1

Exhibit 99.1

Execution Copy

DUKE ENERGY CORPORATION

$500,000,000 3.55% SENIOR NOTES DUE 2021

UNDERWRITING AGREEMENT

August 22, 2011

BNY Mellon Capital Markets, LLC
Citigroup Global Markets Inc.
Goldman, Sachs & Co.
UBS Securities LLC

As Representatives of the several Underwriters

c/oUBS Securities LLC
677 Washington Boulevard
Stamford, CT 06901

Ladies and Gentlemen:

1.Introductory. DUKE ENERGY CORPORATION, a Delaware corporation (the “Corporation”), proposes, subject to the terms and conditions stated herein, to issue and sell $500,000,000 aggregate principal amount of 3.55% Senior Notes due 2021 (the “Notes”) to be issued pursuant to the provisions of an Indenture, dated as of June 3, 2008, as the same may be amended and supplemented by supplemental indentures, including the supplemental indenture to be dated as of August 25, 2011 relating to the Notes (the “Indenture”), between the Corporation and The Bank of New York Mellon Trust Company, N.A. (the “Trustee”). BNY Mellon Capital Markets, LLC,  Citigroup Global Markets Inc., Goldman, Sachs & Co., and UBS Securities LLC (the “Representatives”) are acting as representatives of the several underwriters named in Schedule A hereto (together with the Representatives, the “Underwriters”).  The Corporation understands that the several Underwriters propose to offer the Notes for sale upon the terms and conditions contemplated by (i) this Agreement and (ii) the Base Prospectus, the Preliminary Prospectus and any Permitted Free Writing Prospectus (as defined below) issued at or prior to the Applicable Time (such documents referred to in this subclause (ii) herein called the “Pricing Disclosure Package”).

2.Representations and Warranties of the Corporation. The Corporation represents and warrants to, and agrees with, the several Underwriters that:

(a)Registration statement (No. 333-169633), including a prospectus, relating to the Notes and certain other securities has been filed with the Securities and Exchange Commission (the “Commission”) under the Securities Act of 1933, as amended (the “1933 Act”). Such registration statement and any post-effective amendment thereto, each in the form heretofore delivered to you, became effective upon filing with the Commission pursuant to Rule 462 of the rules and regulations of the Commission under the 1933 Act (the “1933 Act Regulations”), and no stop order suspending the effectiveness of such registration statement has been issued and no proceeding for that purpose or pursuant to Section 8A of the 1933 Act has been initiated or threatened by the Commission (if prepared, any preliminary prospectus supplement specifically relating to the Notes immediately prior to the Applicable Time (as defined below) included in such registration statement or filed with the Commission pursuant to Rule 424(b) of the 1933 Act Regulations being hereinafter called a “Preliminary Prospectus”); the term “Registration Statement” means the registration statement as deemed revised pursuant to Rule 430B(f)(1) of the 1933 Act Regulations on the date of such registration statement’s effectiveness for purposes of Section 11 of the 1933 Act, as such section applies to the Corporation and the Underwriters for the Notes pursuant to Rule 430B(f)(2) of the 1933 Act Regulations (the “Effective Date”), including all exhibits thereto and including the documents incorporated by reference in the prospectus contained in the Registration Statement at the time such part of the Registration Statement became effective; the term “Base Prospectus” means the prospectus filed with the Commission on the date hereof by the Corporation; and the term “Prospectus” means the Base Prospectus together with the prospectus supplement specifically relating to the Notes prepared in accordance with the provisions of Rule 430B and promptly filed after execution and delivery of this Agreement pursuant to Rule 430B or Rule 424(b) of the 1933 Act Regulations; any information included in such Prospectus that was omitted from the Registration Statement at the time it became effective but that is deemed to be a part of and included in such registration statement pursuant to Rule 430B is referred to as “Rule 430B Information;” and any reference herein to any Registration Statement, Preliminary Prospectus or the Prospectus shall be deemed to refer to and include the documents incorporated by reference therein prior to the date hereof; any reference to any amendment or supplement to any Preliminary Prospectus or Prospectus shall be deemed to refer to and include any documents filed after the date of such Preliminary Prospectus or Prospectus, as the case may be, under the Securities Exchange Act of 1934, as amended (the “1934 Act”), and incorporated by reference in such Preliminary Prospectus or Prospectus, as the case may be; and any reference to any amendment to the Registration Statement shall be deemed to refer to and include any annual report of the Corporation filed pursuant to Section 13(a) or 15(d) of the 1934 Act after the effective date of the Registration Statement that is incorporated by reference in the Registration Statement.  For purposes of this Agreement, the term “Applicable Time” means 1:40 p.m. (New York City time) on the date hereof.

(b)The Registration Statement, any Permitted Free Writing Prospectus(es) specified on Schedule B, any Preliminary Prospectus and the Prospectus, conform, and any amendments or supplements thereto will conform, in all material respects to the

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requirements of the 1933 Act and the 1933 Act Regulations, and (A) the Registration Statement, as of the Effective Date, at each deemed effective date with respect to the Underwriters pursuant to Rule 430B(f)(2) of the 1933 Act Regulations, and at the Closing Date (as defined in Section 3), did not and will not contain any untrue statement of a material fact or omit to state any material fact required to be stated therein or necessary to make the statements therein not misleading, and (B) (i) the Pricing Disclosure Package, as of the Applicable Time, did not and will not, (ii) the Prospectus and any amendment or supplement thereto, as of their dates, will not, and (iii) the Prospectus as of the Closing Date will not, include any untrue statement of a material fact or omit to state any material fact necessary to make the statements therein, in the light of the circumstances under which they were made, not misleading, except that the Corporation makes no warranty or representation to the Underwriters with respect to any statements or omissions made in reliance upon and in conformity with written information furnished to the Corporation by the Representatives on behalf of the Underwriters specifically for use in the Registration Statement, the Permitted Free Writing Prospectus(es), any Preliminary Prospectus or the Prospectus.

(c)Any Permitted Free Writing Prospectus specified on Schedule B hereto as of its issue date and at all subsequent times through the completion of the public offer and sale of the Notes or until any earlier date that the Corporation notified or notifies the Underwriters as described in Section 5(f) did not, does not and will not include any information that conflicts with the information (not superseded or modified as of the Effective Date) contained in the Registration Statement, any Preliminary Prospectus or the Prospectus.

(d)At the earliest time the Corporation or another offering participant made a bona fide offer (within the meaning of Rule 164(h)(2) of the 1933 Act Regulations) of the Notes, the Corporation was not an “ineligible issuer” as defined in Rule 405 of the 1933 Act Regulations.  The Corporation is, and was at the time of the initial filing of the Registration Statement, eligible to use Form S-3 under the 1933 Act.

(e)The documents incorporated or deemed to be incorporated by reference in the Registration Statement, the Pricing Disclosure Package and the Prospectus, at the time they were filed or hereafter are filed with the Commission, complied and will comply in all material respects with the requirements of the 1934 Act and the rules and regulations of the Commission thereunder (the “1934 Act Regulations”), and, when read together with the other information in the Prospectus, (a) at the time the Registration Statement became effective, (b) at the Applicable Time and (c) on the Closing Date did not and will not contain an untrue statement of a material fact or omit to state a material fact required to be stated therein or necessary to make the statements therein, in the light of the circumstances under which they were made, not misleading.

(f)The compliance by the Corporation with all of the provisions of this Agreement has been duly authorized by all necessary corporate action and the consummation of the transactions herein contemplated will not conflict with or result in a breach

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or violation of any of the terms or provisions of, or constitute a default under, any indenture, mortgage, deed of trust, loan agreement or other agreement or instrument to which the Corporation or any of its Principal Subsidiaries (as hereinafter defined) is a party or by which any of them or their respective property is bound or to which any of their properties or assets is subject that would have a material adverse effect on the business, financial condition or results of operations of the Corporation and its subsidiaries, taken as a whole, nor will such action result in any violation of the provisions of the amended and restated Certificate of Incorporation (the “Certificate of Incorporation”), the amended and restated By-Laws (the “By-Laws”) of the Corporation or any statute or any order, rule or regulation of any court or governmental agency or body having jurisdiction over the Corporation or its Principal Subsidiaries or any of their respective properties that would have a material adverse effect on the business, financial condition or results of operations of the Corporation and its subsidiaries, taken as a whole; and no consent, approval, authorization, order, registration or qualification of or with any such court or governmental agency or body is required for the consummation by the Corporation of the transactions contemplated by this Agreement, except for the registration under the 1933 Act of the Notes, qualification under the Trust Indenture Act of 1939 (the “1939 Act”) and such consents, approvals, authorizations, registrations or qualifications as may be required under state securities or Blue Sky laws in connection with the purchase and distribution of the Notes by the Underwriters.

(g)This Agreement has been duly authorized, executed and delivered by the Corporation.

(h)Each of Duke Energy Carolinas, LLC, a North Carolina limited liability company, Duke Energy Indiana, Inc., an Indiana corporation and Duke Energy Ohio, Inc., an Ohio corporation is a “significant subsidiary” of the Corporation within the meaning of Rule 405 of the 1933 Act Regulations (herein collectively referred to as the “Principal Subsidiaries”).

(i)The Indenture has been duly authorized, executed and delivered by the Corporation and duly qualified under the 1939 Act and, assuming the due authorization, execution and delivery thereof by the Trustee, constitutes a valid and legally binding instrument of the Corporation enforceable against the Corporation in accordance with its terms, except as the enforceability thereof may be limited by bankruptcy, insolvency, reorganization, moratorium or similar laws affecting creditors’ rights generally and by general principles of equity (regardless of whether enforceability is considered in a proceeding in equity or at law).

(j)The Notes have been duly authorized and when executed by the Corporation and, when authenticated by the Trustee, in the manner provided in the Indenture and delivered against payment therefor, will constitute valid and legally binding obligations of the Corporation, enforceable against the Corporation in accordance with their terms, except as the enforceability thereof may be limited by bankruptcy, insolvency, reorganization, moratorium or similar laws affecting

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creditors’ rights generally and by general principles of equity (regardless of whether enforceability is considered in a proceeding in equity or at law) and are entitled to the benefits afforded by the Indenture in accordance with the terms of the Indenture and the Notes.

(k)Any indenture, mortgage, deed of trust, loan agreement or other agreement or instrument filed or incorporated by reference as an exhibit to the Registration Statement or the Annual Report on Form 10-K of the Corporation for the fiscal year ended December 31, 2010, except to the extent that such agreement is no longer in effect or to the extent that neither the Corporation nor any subsidiary of the Corporation is currently a party to such agreement, are all indentures, mortgages, deeds of trust, loan agreements or other agreements or instruments that are material to the Corporation.

(l)The Corporation is not required to be qualified as a foreign corporation to transact business in Indiana, North Carolina, Ohio and South Carolina.

(m)The pro forma financial statements of the Corporation and its subsidiaries and the related notes thereto incorporated by reference in the Registration Statement, the Pricing Disclosure Package and the Prospectus have been prepared in accordance with the Commission’s rules and guidelines with respect to pro forma financial statements and have been properly compiled on the bases described therein.

(n)The execution, delivery and performance of the Agreement and Plan of Merger (the “Merger Agreement”), dated January 8, 2011, among the Corporation, Diamond Acquisition Corporation and Progress Energy, Inc. and the consummation by the Corporation of the transactions contemplated hereby have been duly and validly adopted and unanimously approved by the Board of Directors of the Corporation, the Board of Directors of the Corporation has recommended approval by the shareholders of the Corporation of the amendment to the Corporation’s certificate of incorporation (the “Charter Amendment”) and issuance of common stock of the Corporation (the “Share Issuance”), each as contemplated by the Merger Agreement, and directed that the Charter Amendment and Share Issuance be submitted to the stockholders of the Corporation for their approval, and no other corporate proceedings on the part of Corporation or its stockholders are necessary to authorize the execution, delivery and performance of the Merger Agreement by the Corporation and the consummation by the Corporation of the transactions contemplated thereby, other than obtaining the approvals of the Corporation’s stockholders of the Charter Amendment and the Share Issuance.  The Merger Agreement has been duly and validly executed and delivered by the Corporation and, assuming the Merger Agreement constitutes the legal, valid and binding obligation of Progress Energy, Inc., constitutes a legal, valid and binding obligation of the Corporation enforceable against the Corporation in accordance with its terms, except that such enforcement may be subject to applicable bankruptcy, insolvency, reorganization, moratorium or other similar laws, now or hereafter in effect, relating to creditors’ rights generally and to general equitable principles.  No consent, approval, authorization, order, registration or qualification of or with any court or

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governmental agency or body having jurisdiction over the Corporation or its Principal Subsidiaries or any of their respective properties is required for the consummation by the Corporation of the transactions contemplated by the Merger Agreement, except such as has been obtained or are contemplated or as are disclosed in the Merger Agreement or the General Disclosure Package.

3.Purchase, Sale and Delivery of Notes. On the basis of the representations, warranties and agreements herein contained, but subject to the terms and conditions herein set forth, the Corporation agrees to sell to the Underwriters, and the Underwriters agree, severally and not jointly, to purchase from the Corporation, at a purchase price of 99.331% of the principal amount of the Notes plus accrued interest from August 25, 2011 (and in the manner set forth below), the principal amount of Notes set forth opposite the names of the Underwriters in Schedule A hereto plus the respective principal amount of additional Notes which each such Underwriter may become obligated to purchase pursuant to the provisions of Section 8 hereof.  The Underwriters hereby agree to reimburse the Corporation in an amount equal to $1,000,000 including in respect of expenses incurred by us in connection with the offering.

Payment of the purchase price for the Notes to be purchased by the Underwriters and the reimbursement shall be made at the offices of Robinson, Bradshaw & Hinson, P.A., 101 North Tryon Street, Suite 1900, Charlotte, North Carolina 28246, or at such other place as shall be mutually agreed upon by the Representatives and the Corporation, at 10:00 a.m., New York City time, on August 25, 2011 or such other time and date as shall be agreed upon in writing by the Corporation and the Representatives (the “Closing Date”). All other documents referred to herein that are to be delivered at the Closing Date shall be delivered at that time at the offices of Sidley Austin LLP, 787 Seventh Avenue, New York, NY 10019.  Payment shall be made to the Corporation by wire transfer in immediately available funds, payable to the order of the Corporation against delivery of the Notes, in fully registered form, to you or upon your order.  The Notes shall be delivered in the form of one or more global certificates in aggregate denomination equal to the aggregate principal amount of the Notes upon original issuance and registered in the name of Cede & Co., as nominee for The Depository Trust Company (“DTC”).

4.Offering by the Underwriters. It is understood that the several Underwriters propose to offer the Notes for sale to the public as set forth in the Pricing Disclosure Package and the Prospectus.

5.Covenants of the Corporation. The Corporation covenants and agrees with the several Underwriters that:

(a)The Corporation will cause any Preliminary Prospectus and the Prospectus to be filed pursuant to, and in compliance with, Rule 424(b) of the 1933 Act Regulations, and advise the Underwriters promptly of the filing of any amendment or supplement to the Registration Statement, any Preliminary Prospectus or the Prospectus and of the institution by the Commission of any stop order proceedings in respect of the Registration Statement, and will use its best efforts to prevent the issuance of any such stop order and to obtain as soon as possible its lifting, if issued.

(b)If at any time when a prospectus relating to the Notes (or the notice referred to in Rule 173(a) of the 1933 Act Regulations) is required to be delivered under the

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1933 Act any event occurs as a result of which the Pricing Disclosure Package or the Prospectus as then amended or supplemented would include an untrue statement of a material fact, or omit to state any material fact necessary to make the statements therein, in the light of the circumstances under which they were made, not misleading, or if it is necessary at any time to amend the Pricing Disclosure Package or the Prospectus to comply with the 1933 Act, the Corporation promptly will prepare and file with the Commission an amendment, supplement or an appropriate document pursuant to Section 13 or 14 of the 1934 Act which will correct such statement or omission or which will effect such compliance.

(c)The Corporation, during the period when a prospectus relating to the Notes is required to be delivered under the 1933 Act, will timely file all documents required to be filed with the Commission pursuant to Section 13 or 14 of the 1934 Act.

(d)Without the prior consent of the Underwriters, the Corporation has not made and will not make any offer relating to the Notes that would constitute a “free writing prospectus” as defined in Rule 405 of the 1933 Act Regulations, other than a Permitted Free Writing Prospectus; each Underwriter, severally and not jointly, represents and agrees that, without the prior consent of the Corporation, it has not made and will not make any offer relating to the Notes that would constitute a “free writing prospectus” as defined in Rule 405 of the 1933 Act Regulations, other than a Permitted Free Writing Prospectus or a free writing prospectus that is not required to be filed by the Corporation pursuant to Rule 433 of the 1933 Act Regulations; any such free writing prospectus (which shall include the pricing term sheet discussed in Section 5(e) below), the use of which has been consented to by the Corporation and the Underwriters, is listed on Schedule B and herein called a “Permitted Free Writing Prospectus.”  The Corporation represents that it has treated or agrees that it will treat each Permitted Free Writing Prospectus as an “issuer free writing prospectus,” as defined in Rule 433, and has complied and will comply with the requirements of Rule 433 applicable to any Permitted Free Writing Prospectus, including timely filing with the Commission where required, legending and record keeping.

(e)The Corporation agrees to prepare a term sheet specifying the terms of the Notes not contained in any Preliminary Prospectus, substantially in the form of Schedule C hereto and approved by the Representatives on behalf of the Underwriters, and to file such pricing term sheet as an “issuer free writing prospectus” pursuant to Rule 433(b) of the 1933 Act Regulations prior to the close of business two business days after the date hereof.

(f)The Corporation agrees that if at any time following the issuance of a Permitted Free Writing Prospectus any event occurs as a result of which such Permitted Free Writing Prospectus would conflict with the information (not superseded or modified as of the Effective Date) in the Registration Statement, the Pricing Disclosure Package or the Prospectus or would include an untrue statement of a material fact or omit to state any material fact necessary in order to make the

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statements therein, in light of the circumstances then prevailing, not misleading, the Corporation will give prompt notice thereof to the Underwriters and, if requested by the Underwriters, will prepare and furnish without charge to each Underwriter a free writing prospectus or other document, the use of which has been consented to by the Underwriters, which will correct such conflict, statement or omission.

(g)The Corporation will make generally available to its security holders, in each case as soon as practicable but not later than 60 days after the close of the period covered thereby, earnings statements (in form complying with the provisions of Rule 158 under the 1933 Act, which need not be certified by independent certified public accountants unless required by the 1933 Act) covering (i) a twelve-month period beginning not later than the first day of the Corporation’s fiscal quarter next following the effective date of the Registration Statement and (ii) a twelve-month period beginning not later than the first day of the Corporation’s fiscal quarter next following the date of this Agreement.

(h)The Corporation will furnish to you, without charge, copies of the Registration Statement (four of which will include all exhibits other than those incorporated by reference), the Pricing Disclosure Package and the Prospectus, and all amendments and supplements to such documents, in each case as soon as available and in such quantities as you reasonably request.

(i)The Corporation will arrange or cooperate in arrangements for the qualification of the Notes for sale under the laws of such jurisdictions as you designate and will continue such qualifications in effect so long as required for the distribution; provided, however, that the Corporation shall not be required to qualify as a foreign corporation or to file any general consents to service of process under the laws of any state where it is not now so subject.

(j)The Corporation will pay all expenses incident to the performance of its obligations under this Agreement including (i) the printing and filing of the Registration Statement and the printing of this Agreement and any Blue Sky Survey, (ii) the preparation and printing of certificates for the Notes, (iii) the issuance and delivery of the Notes as specified herein, (iv) the fees and disbursements of counsel for the Underwriters in connection with the qualification of the Notes under the securities laws of any jurisdiction in accordance with the provisions of Section 5(i) and in connection with the preparation of the Blue Sky Survey, such fees not to exceed $5,000, (v) the printing and delivery to the Underwriters, in quantities as hereinabove referred to, of copies of the Registration Statement and any amendments thereto, of any Preliminary Prospectus, of the Prospectus, of any Permitted Free Writing Prospectus and any amendments or supplements thereto, (vi) any fees charged by independent rating agencies for rating the Notes, (vii) any fees and expenses in connection with the listing of the Notes on the New York Stock Exchange, (viii) any filing fee required by the Financial Industry Regulatory Authority, (ix) the costs of any depository arrangements for the Notes with DTC or any successor depositary and (x) the costs and expenses of the Corporation relating to investor presentations on

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any “road show” undertaken in connection with the marketing of the offering of the Notes, including, without limitation, expenses associated with the production of road show slides and graphics, fees and expenses of any consultants engaged in connection with the road show presentations with the prior approval of the Corporation, travel and lodging expenses of the Underwriters and officers of the Corporation and any such consultants, and the cost of any aircraft chartered in connection with the road show; provided, however, the Underwriters shall reimburse a portion of the costs and expenses referred to in this clause (x).

6.Conditions of the Obligations of the Underwriters. The obligations of the several Underwriters to purchase and pay for the Notes will be subject to the accuracy of the representations and warranties on the part of the Corporation herein, to the accuracy of the statements of officers of the Corporation made pursuant to the provisions hereof, to the performance by the Corporation of its obligations hereunder and to the following additional conditions precedent:

(a)The Prospectus shall have been filed with the Commission pursuant to Rule 424(b) within the applicable time period prescribed for filing by the 1933 Act Regulations and in accordance herewith and each Permitted Free Writing Prospectus shall have been filed by the Corporation with the Commission within the applicable time periods prescribed for such filings by, and otherwise in compliance with, Rule 433 of the 1933 Act Regulations.

(b)On or after the Applicable Time and prior to the Closing Date, no stop order suspending the effectiveness of the Registration Statement shall have been issued and no proceedings for that purpose or pursuant to Section 8A of the 1933 Act shall have been instituted or, to the knowledge of the Corporation or you, shall be threatened by the Commission.

(c)On or after the Applicable Time and prior to the Closing Date, the rating assigned by Moody’s Investors Service, Inc. or Standard & Poor’s Ratings Services to any debt securities or preferred stock of the Corporation as of the date of this Agreement shall not have been lowered.

(d)Since the respective most recent dates as of which information is given in the Pricing Disclosure Package and the Prospectus and up to the Closing Date, there shall not have been any material adverse change in the condition of the Corporation, financial or otherwise, except as reflected in or contemplated by the Prospectus, and, since such dates and up to the Closing Date, there shall not have been any material transaction entered into by the Corporation other than transactions contemplated by the Pricing Disclosure Package and the Prospectus and transactions in the ordinary course of business, the effect of which in your reasonable judgment is so material and adverse as to make it impracticable or inadvisable to proceed with the public offering or the delivery of the Notes on the terms and in the manner contemplated by the Pricing Disclosure Package and the Prospectus.

(e)You shall have received an opinion of Robert T. Lucas III, Esq., Associate General Counsel of the Corporation, dated the Closing Date, to the effect that:

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(i)Each of the Principal Subsidiaries, other than Duke Energy Carolinas, LLC, has been duly incorporated and is validly existing in good standing under the laws of the jurisdiction of its incorporation has the respective corporate power and authority and foreign qualifications necessary to own its properties and to conduct its business as described in the Pricing Disclosure Package and the Prospectus.  Duke Energy Carolinas, LLC has been duly organized and is validly existing and in good standing as a limited liability company under the laws of the State of North Carolina and has full limited liability company power and authority necessary to own its properties and to conduct its business as described in the Pricing Disclosure Package and the Prospectus.

(ii)Each of the Corporation and the Principal Subsidiaries is duly qualified to do business in each jurisdiction in which the ownership or leasing of its property or the conduct of its business requires such qualification, except where the failure to so qualify, considering all such cases in the aggregate, does not have a material adverse effect on the business, properties, financial condition or results of operations of the Corporation and its subsidiaries taken as a whole.

(iii)The Registration Statement became effective upon filing with the Commission pursuant to Rule 462 of the 1933 Act Regulations, and, to the best of such counsel’s knowledge, no stop order suspending the effectiveness of the Registration Statement has been issued and no proceedings for that purpose have been instituted or are pending or threatened under the 1933 Act.

(iv)The descriptions in the Registration Statement, the Pricing Disclosure Package and the Prospectus of any legal or governmental proceedings are accurate and fairly present the information required to be shown, and such counsel does not know of any litigation or any legal or governmental proceeding instituted or threatened against the Corporation or any of its Principal Subsidiaries or any of their respective properties that would be required to be disclosed in the Registration Statement, the Pricing Disclosure Package or the Prospectus and is not so disclosed.

(v)This Agreement has been duly authorized, executed and delivered by the Corporation.

(vi)The execution, delivery and performance by the Corporation of this Agreement, the Indenture and the issue and sale of the Notes will not violate or contravene any of the provisions of the Certificate of Incorporation or By-Laws of the Corporation or any statute or any order, rule or regulation of which such counsel is aware of any court or governmental agency or body having jurisdiction over the Corporation or any of its Principal Subsidiaries or any of their respective property, nor will such action conflict with or result in a breach or violation of any of the terms or provisions of, or constitute a default under any indenture,

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mortgage, deed of trust, loan agreement or other agreement or instrument known to such counsel to which the Corporation or any of its Principal Subsidiaries is a party or by which any of them or their respective property is bound or to which any of its property or assets is subject which affects in a material way the Corporation’s ability to perform its obligations under this Agreement, the Indenture and the Notes.

(vii)The Indenture has been duly authorized, executed and delivered by the Corporation and, assuming the due authorization, execution and delivery thereof by the Trustee, constitutes a valid and legally binding instrument of the Corporation, enforceable against the Corporation in accordance with its terms.

(viii)The Notes have been duly authorized, executed and issued by the Corporation and, when authenticated by the Trustee, in the manner provided in the Indenture and delivered against payment therefor, will constitute valid and legally binding obligations of the Corporation enforceable against the Corporation in accordance with their terms, and are entitled to the benefits afforded by the Indenture in accordance with the terms of the Indenture and the Notes.

(ix)No consent, approval, authorization, order, registration or qualification is required to authorize, or for the Corporation to consummate the transactions contemplated by this Agreement, except for such consents, approvals, authorizations, registrations or qualifications as may be required under state securities or Blue Sky laws in connection with the purchase and distribution of the Notes by the Underwriters and except as required in Condition 41 of the order of the North Carolina Utilities Commission dated March 24, 2006, in Docket No. E-7, sub 795, which consent has been obtained.

Such counsel may state that his opinions in paragraphs (vii) and (viii) are subject to the effects of bankruptcy, insolvency, fraudulent conveyance, reorganization, moratorium and other similar laws relating to or affecting creditors’ rights generally and by general principles of equity (regardless of whether enforceability is considered in a proceeding in equity or at law).  Such counsel shall state that nothing has come to his attention that has caused him to believe that each document incorporated by reference in the Registration Statement, the Pricing Disclosure Package and the Prospectus, when filed, was not, on its face, appropriately responsive, in all material respects, to the requirements of the 1934 Act and the 1934 Act Regulations.  Such counsel shall also state that nothing has come to his attention that has caused him to believe that (i) the Registration Statement, including the Rule 430B Information, as of its effective date and at each deemed effective date with respect to the Underwriters pursuant to Rule 430B(f)(2) of the 1933 Act Regulations, contained any untrue statement of a material fact or omitted to state a material fact required to be stated therein or necessary to make the statements therein not misleading, (ii) the Pricing Disclosure Package at the Applicable Time contained any untrue statement of a material fact or omitted to state any material fact necessary in order to make the statements therein, in the light of the circumstances under which they were made, not misleading or (iii) that the Prospectus or any amendment or supplement thereto, as of the date it was filed

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with, or transmitted for filing to, the Commission and at the Closing Date, contained or contains any untrue statement of a material fact or omitted or omits to state any material fact necessary in order to make the statements therein, in light of the circumstances under which they were made, not misleading. Such counsel may also state that, except as otherwise expressly provided in such opinion, he does not assume any responsibility for the accuracy, completeness or fairness of the statements contained in or incorporated by reference into the Registration Statement, the Pricing Disclosure Package or the Prospectus and does not express any opinion or belief as to (i) the financial statements or other financial data contained or incorporated by reference therein, (ii) the statement of the eligibility and qualification of the Trustee included in the Registration Statement (the “Form T-1”) or (iii) the information in the Prospectus under the caption “Book-Entry System.”

In rendering the foregoing opinion, such counsel may state that he does not express any opinion concerning any law other than the law of the State of North Carolina and may rely as to all matters of the laws of the States of South Carolina, Ohio and Indiana on appropriate counsel reasonably satisfactory to the Representatives, which may include the Corporation’s other “in-house” counsel). Such counsel may also state that he has relied as to certain factual matters on information obtained from public officials, officers of the Corporation and other sources believed by him to be responsible.

(f)You shall have received an opinion of Robinson, Bradshaw & Hinson, P.A., counsel to the Corporation, dated the Closing Date, to the effect that:

(i)This Agreement has been duly authorized, executed and delivered by the Corporation.

(ii)The execution and delivery by the Corporation of this Agreement and the consummation by the Corporation of the transactions contemplated hereby, including the issuance and sale of the Notes, will not (i) conflict with the Corporation’s certificate of incorporation or Bylaws, (ii) constitute a violation of, or a breach of or default under, the terms of any of the contracts set forth on Schedule D hereto or (iii) violate or conflict with, or result in any contravention of, any Applicable Law.  “Applicable Law” means the General Corporation Law of the State of Delaware and those laws, rules and regulations of the State of New York and those federal laws, rules and regulations of the United States of America, in each case that, in such counsel’s experience, are normally applicable to transactions of the type contemplated by this Agreement (other than the United States federal securities laws, state securities or blue sky laws, antifraud laws and the rules and regulations of the Financial Industry Regulatory Authority).

(iii)(a) No Governmental Approval of a federal court, a North Carolina court or a Delaware court acting pursuant to General Corporation Law of the State of Delaware, which has not been obtained or taken and is not in full force and effect, is required to authorize, or is required for, the execution or delivery of this Agreement by the Corporation or the consummation by the Corporation of the transactions contemplated hereby, and (b) no other

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Governmental Approval, which has not been obtained or taken and is not in full force and effect, is required to authorize, or is required for, the execution or delivery of this Agreement by the Corporation or the consummation by the Corporation of the transactions contemplated hereby.  “Governmental Approval” means any consent, approval, license, authorization or validation of, or filing, qualification or registration with, any Governmental Authority required to be made or obtained pursuant to Applicable Laws, other than any consent, approval, license, authorization, validation, filing, qualification or registration that may have become applicable as a result of the involvement of any party (other than the Corporation) in the transactions contemplated by this Agreement or because of such parties’ legal or regulatory status or because of any other facts specifically pertaining to such parties and “Governmental Authority” means any court, regulatory body, administrative agency or governmental body of the State of North Carolina or the State of Delaware or the United States of America having jurisdiction over the Corporation under Applicable Law.

(iv)The Corporation has been duly incorporated and is validly existing in good standing under the laws of the State of Delaware, and has the corporate power and corporate authority to execute and deliver this Agreement and to consummate the transactions contemplated hereby.

(v)The Indenture has been duly authorized, executed and delivered by the Corporation and, assuming the due authorization, execution and delivery thereof by the Trustee, is a valid and binding agreement of the Corporation, enforceable against the Corporation in accordance with its terms.

(vi)The Notes have been duly authorized and executed by the Corporation and, when duly authenticated by the Trustee and issued and delivered by the Corporation against payment therefor in accordance with the terms of this Agreement and the Indenture, will constitute valid and binding obligations of the Corporation entitled to the benefits of the Indenture and enforceable against the Corporation in accordance with their terms.

(vii)The statements (i) under the caption “Description of Debt Securities” (other than under the caption “Book-Entry Debt Securities”) that are included in the Base Prospectus and (ii) under the caption “Description of the Notes” in the Pricing Disclosure Package and the Prospectus Supplement, insofar as such statements purport to summarize certain provisions of the Indenture and the Notes, fairly summarize such provisions in all material respects.

(viii)The Corporation is not and, solely after giving effect to the offering and sale of the Notes and the application of the proceeds thereof as described in the Prospectus, will not be an “investment company,” as such term is defined in the Investment Company Act of 1940, as amended.

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(ix)The statements in the Prospectus under the caption “Underwriting,” insofar as such statements purport to summarize certain provisions of this Agreement, fairly summarize such provisions in all material respects.

You shall also have received a statement of Robinson, Bradshaw & Hinson, P.A., dated the Closing Date, to the effect that:

(i) no facts have come to such counsel’s attention that have caused such counsel to believe that the documents filed by the Corporation under the 1934 Act and the 1934 Act Regulations that are incorporated by reference in the Preliminary Prospectus Supplement that forms a part of the Pricing Disclosure Package and the Prospectus, were not, on their face, appropriately responsive in all material respects to the requirements of the 1934 Act and the 1934 Act Regulations (except that in each case such counsel need not express any view as to the financial statements, schedules and other financial information included or incorporated by reference therein or excluded therefrom or the Form T-1) (ii) the Registration Statement, at the Applicable Time and the Prospectus, as of its date, appeared on their face to be appropriately responsive in all material respects to the requirements of the 1933 Act and the 1933 Act Rules and Regulations (except that in each case such counsel need not express any view as to the financial statements, schedules and other financial information included or incorporated by reference therein or excluded therefrom or the Form T-1) and (iii) no facts have come to such counsel’s attention that have caused such counsel to believe that the Registration Statement, at the Applicable Time, contained an untrue statement of a material fact or omitted to state a material fact required to be stated therein or necessary to make the statements therein not misleading, or that the Prospectus, as of its date and as of the Closing Date, contained or contains an untrue statement of a material fact or omitted or omits to state a material fact necessary in order to make the statements therein, in the light of the circumstances under which they were made, not misleading (except that in each case such counsel need not express any view as to the financial statements, schedules and other financial information included or incorporated by reference therein or excluded therefrom or the statements contained in the exhibits to the Registration Statement, including the Form T-1).  Such counsel shall further state that, in addition, no facts have come to such counsel’s attention that have caused such counsel to believe that the Pricing Disclosure Package, as of the Applicable Time, contained an untrue statement of a material fact or omitted to state a material fact necessary in order to make the statements therein, in the light of the circumstances under which they were made, not misleading (except that such counsel need not express any view as to the financial statements, schedules and other financial information included or incorporated by reference therein or excluded therefrom or the statements contained in the exhibits to the Registration Statement, including the Form T-1).

In addition, such statement shall confirm that the Prospectus has been filed with the Commission within the time period required by Rule 424 of the 1933 Act Regulations and any required filing of a Permitted Free Writing Prospectus pursuant to Rule 433 of the 1933 Act Regulations has been filed with the Commission within the time period required by Rule 433(d) of the 1933 Act Regulations.  Such statement shall further state that the Registration Statement became effective upon filing under the 1933 Act and, pursuant to Section 309 of the Trust Indenture Act of 1939, as amended (the “1939 Act”), the Indenture has been qualified under the 1939 Act, and that such counsel has been orally advised by the Commission that no stop order suspending the effectiveness of the Registration Statement has been issued and, to such counsel’s

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knowledge, no proceedings for that purpose have been instituted or are pending or threatened by the Commission.

Robinson, Bradshaw & Hinson, P.A. may state that its opinions in paragraphs (v) and (vi) are subject to the effects of bankruptcy, insolvency, reorganization, moratorium or similar laws affecting creditors’ rights generally and by general principles of equity (regardless of whether enforceability is considered in a proceeding in equity or at law).  In addition, such counsel may state that they have relied as to certain factual matters on information obtained from public officials, officers and representatives of the Corporation and that the signatures on all documents examined by them are genuine, assumptions which such counsel have not independently verified.

(g)You shall have received an opinion of Sidley Austin LLP, counsel for the Underwriters, dated the Closing Date, with respect to the validity of the Notes, the Registration Statement, the Pricing Disclosure Package and the Prospectus, as amended or supplemented, and such other related matters as you may require, and the Corporation shall have furnished to such counsel such documents as they request for the purpose of enabling them to pass upon such matters.

(h)On or after the Applicable Time, there shall not have occurred any of the following: (i) a suspension or material limitation in trading in securities generally or of the securities of the Corporation, on the New York Stock Exchange; or (ii) a general moratorium on commercial banking activities in New York declared by either Federal or New York State authorities or a material disruption in commercial banking services or securities settlement or clearance services in the United States; or (iii) the outbreak or escalation of hostilities involving the United States or the declaration by the United States of a national emergency or war, if the effect of any such event specified in this subsection (h) in your reasonable judgment makes it impracticable or inadvisable to proceed with the public offering or the delivery of the Notes on the terms and in the manner contemplated in the Pricing Disclosure Package and the Prospectus. In such event there shall be no liability on the part of any party to any other party except as otherwise provided in Section 7 hereof and except for the expenses to be borne by the Corporation as provided in Section 5(j) hereof.

(i)You shall have received a certificate of the Chairman of the Board, the President, any Vice President, the Secretary or an Assistant Secretary and any financial or accounting officer of the Corporation, dated the Closing Date, in which such officers, to the best of their knowledge after reasonable investigation, shall state that the representations and warranties of the Corporation in this Agreement are true and correct as of the Closing Date, that the Corporation has complied with all agreements and satisfied all conditions on its part to be performed or satisfied at or prior to the Closing Date, that the conditions specified in Section 6(c) and Section 6(d) have been satisfied, and that no stop order suspending the effectiveness of the Registration Statement has been issued and no proceedings for that purpose have been instituted or are threatened by the Commission.

(j)At the time of the execution of this Agreement, you shall have received a letter dated such date, in form and substance satisfactory to you, from Deloitte &

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Touche LLP, the Corporation’s independent registered public accounting firm, containing statements and information of the type ordinarily included in accountants’ “comfort letters” to underwriters with respect to the financial statements and certain financial information contained or incorporated by reference into the Registration Statement, the Pricing Disclosure Package and the Prospectus, including specific references to inquiries regarding any increase in long-term debt (excluding current maturities), decrease in net current assets (defined as current assets less current liabilities) or common stockholders’ equity, change in the Corporation’s common stock, and decrease in operating revenues or net income for the period subsequent to the latest financial statements incorporated by reference in the Registration Statement when compared with the corresponding period from the preceding year, as of a specified date not more than three business days prior to the date of this Agreement.

(k)At the time of the execution of this Agreement, you shall have received a letter dated such date, in form and substance satisfactory to you, from Deloitte & Touche LLP, in their capacity as Progress Energy’s independent registered public accounting firm, containing statements and information of the type ordinarily included in accountants’ “comfort letters” to underwriters with respect to the financial statements of Progress Energy contained or incorporated by reference into the Registration Statement, the Pricing Disclosure Package and the Prospectus.

(l)At the Closing Date, you shall have received from Deloitte & Touche LLP, letters dated as of the Closing Date, to the effect that they reaffirm the statements made in the letter furnished pursuant to subsections (j) and (k) of this Section 6, except that the specified date referred to shall be not more than three business days prior to the Closing Date.

The Corporation will furnish you with such conformed copies of such opinions, certificates, letters and documents as you reasonably request.

7.Indemnification. (a)  The Corporation agrees to indemnify and hold harmless each Underwriter, their respective officers and directors, and each person, if any, who controls any Underwriter or within the meaning of Section 15 of the 1933 Act, as follows:

(i)against any and all loss, liability, claim, damage and expense whatsoever arising out of any untrue statement or alleged untrue statement of a material fact contained in the Registration Statement (or any amendment thereto) including the Rule 430B Information, or the omission or alleged omission therefrom of a material fact required to be stated therein or necessary to make the statements therein not misleading or arising out of any untrue statement or alleged untrue statement of a material fact contained in the Pricing Disclosure Package, the Prospectus (or any amendment or supplement thereto), any Permitted Free Writing Prospectus or any issuer free writing prospectus as defined in Rule 433 of the 1933 Act Regulations, or the omission or alleged omission therefrom of a material fact necessary in order to make the statements therein, in the

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light of the circumstances under which they were made, not misleading, unless such statement or omission or such alleged statement or omission was made in reliance upon and in conformity with written information furnished to the Corporation by the Representatives on behalf of the Underwriters expressly for use in the Registration Statement (or any amendment thereto), the Pricing Disclosure Package, the Prospectus (or any amendment or supplement thereto) or any Permitted Free Writing Prospectus;

(ii)against any and all loss, liability, claim, damage and expense whatsoever to the extent of the aggregate amount paid in settlement of any litigation, commenced or threatened, or of any claim whatsoever based upon any such untrue statement or omission or any such alleged untrue statement or omission, if such settlement is effected with the written consent of the Corporation; and

(iii)against any and all expense whatsoever reasonably incurred in investigating, preparing or defending against any litigation, commenced or threatened, or any claim whatsoever based upon any such untrue statement or omission, or any such alleged untrue statement or omission, to the extent that any such expense is not paid under (i) or (ii) of this Section 7.

In no case shall the Corporation be liable under this indemnity agreement with respect to any claim made against any Underwriter or any such controlling person unless the Corporation shall be notified in writing of the nature of the claim within a reasonable time after the assertion thereof, but failure so to notify the Corporation shall not relieve it from any liability which it may have otherwise than under subsections 7(a) and 7(b). The Corporation shall be entitled to participate at its own expense in the defense, or, if it so elects, within a reasonable time after receipt of such notice, to assume the defense of any suit brought to enforce any such claim, but if it so elects to assume the defense, such defense shall be conducted by counsel chosen by it and approved by the Underwriter or Underwriters or controlling person or persons, or defendant or defendants in any suit so brought, which approval shall not be unreasonably withheld.  In any such suit, any Underwriter or any such controlling person shall have the right to employ its own counsel, but the fees and expenses of such counsel shall be at the expense of such Underwriter or such controlling person unless (i) the Corporation and such Underwriter shall have mutually agreed to the employment of such counsel, or (ii) the named parties to any such action (including any impleaded parties) include both such Underwriter or such controlling person and the Corporation and such Underwriter or such controlling person shall have been advised by such counsel that a conflict of interest between the Corporation and such Underwriter or such controlling person may arise and for this reason it is not desirable for the same counsel to represent both the indemnifying party and also the indemnified party (it being understood, however, that the Corporation shall not, in connection with any one such action or separate but substantially similar or related actions in the same jurisdiction arising out of the same general allegations or circumstances, be liable for the reasonable fees and expenses of more than one separate firm of attorneys for all such Underwriters and all such controlling persons, which firm shall be designated in writing by you). The Corporation agrees to notify you within a reasonable time of the assertion of any claim against it, any of its officers or directors or any person who

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controls the Corporation within the meaning of Section 15 of the 1933 Act, in connection with the sale of the Notes.

(b)Each Underwriter severally agrees that it will indemnify and hold harmless the Corporation, its directors and each of the officers of the Corporation who signed the Registration Statement and each person, if any, who controls the Corporation within the meaning of Section 15 of the 1933 Act to the same extent as the indemnity contained in subsection (a) of this Section, but only with respect to statements or omissions made in the Registration Statement (or any amendment thereto) the Pricing Disclosure Package, the Prospectus (or any amendment or supplement thereto) or any Permitted Free Writing Prospectus, in reliance upon and in conformity with written information furnished to the Corporation by the Representatives on behalf of the Underwriters expressly for use in the Registration Statement (or any amendment thereto), the Pricing Disclosure Package, the Prospectus (or any amendment or supplement thereto) or any Permitted Free Writing Prospectus.  In case any action shall be brought against the Corporation or any person so indemnified based on the Registration Statement (or any amendment thereto), the Pricing Disclosure Package, the Prospectus (or any amendment or supplement thereto) or any Permitted Free Writing Prospectus and in respect of which indemnity may be sought against any Underwriter, such Underwriter shall have the rights and duties given to the Corporation, and the Corporation and each person so indemnified shall have the rights and duties given to the Underwriters, by the provisions of subsection (a) of this Section.

(c)No indemnifying party shall, without the prior written consent of the indemnified party, effect any settlement of any pending or threatened proceeding in respect of which any indemnified party is or could have been a party and indemnity could have been sought hereunder by such indemnified party, unless such settlement includes an unconditional release of such indemnified party from all liability on claims that are the subject matter of such proceeding and does not include a statement as to or an admission of fault, culpability or a failure to act, by or on behalf of any indemnified party.

(d)If the indemnification provided for in this Section 7 is unavailable to or insufficient to hold harmless an indemnified party in respect of any and all loss, liability, claim, damage and expense whatsoever (or actions in respect thereof) that would otherwise have been indemnified under the terms of such indemnity, then each indemnifying party shall contribute to the amount paid or payable by such indemnified party as a result of such loss, liability, claim, damage or expense (or actions in respect thereof) in such proportion as is appropriate to reflect the relative benefits received by the Corporation on the one hand and the Underwriters on the other from the offering of the Notes. If, however, the allocation provided by the immediately preceding sentence is not permitted by applicable law or if the indemnified party failed to give the notice required above, then each indemnifying party shall contribute to such amount paid or payable by such indemnified party in such proportion as is appropriate to reflect not only such relative benefits but also the relative fault of the Corporation on the one hand and the Underwriters on the other in connection with the statements or omissions

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which resulted in such loss, liability, claim, damage or expense (or actions in respect thereof), as well as any other relevant equitable considerations. The relative benefits received by the Corporation on the one hand and the Underwriters on the other shall be deemed to be in the same proportion as the total net proceeds from the offering (before deducting expenses) received by the Corporation bear to the total compensation received by the Underwriters in respect of the underwriting discount as set forth in the table on the cover page of the Prospectus. The relative fault shall be determined by reference to, among other things, whether the untrue or alleged untrue statement of a material fact or the omission or alleged omission to state a material fact relates to information supplied by the Corporation on the one hand or the Underwriters on the other and the parties’ relative intent, knowledge, access to information and opportunity to correct or prevent such statement or omission. The Corporation and the Underwriters agree that it would not be just and equitable if contributions pursuant to this Section were determined by pro rata allocation (even if the Underwriters were treated as one entity for such purpose) or by any other method of allocation which does not take account of the equitable considerations referred to above in this Section. The amount paid or payable by an indemnified party as a result of the losses, liabilities, claims, damages or expenses (or actions in respect thereof) referred to above in this Section shall be deemed to include any legal or other expenses reasonably incurred by such indemnified party in connection with investigating or defending any such action or claim. Notwithstanding the provisions of this Section, no Underwriter shall be required to contribute any amount in excess of the amount by which the total price at which the Notes underwritten by it and distributed to the public were offered to the public exceeds the amount of any damages which such Underwriter has otherwise been required to pay by reason of such untrue or alleged untrue statement or omission or alleged omission. No person guilty of fraudulent misrepresentation (within the meaning of Section 11(f) of the 1933 Act) shall be entitled to contribution from any person who was not guilty of such fraudulent misrepresentation. The Underwriters’ obligations to contribute are several in proportion to their respective underwriting obligations and not joint.

8.Default by One or More of the Underwriters.  (a)  If any Underwriter shall default in its obligation to purchase the Notes which it has agreed to purchase hereunder on the Closing Date, you may in your discretion arrange for you or another party or other parties to purchase such Notes on the terms contained herein. If within thirty-six hours after such default by any Underwriter you do not arrange for the purchase of such Notes, then the Corporation shall be entitled to a further period of thirty-six hours within which to procure another party or other parties satisfactory to you to purchase such Notes on such terms. In the event that, within the respective prescribed periods, you notify the Corporation that you have so arranged for the purchase of such Notes, or the Corporation notifies you that it has so arranged for the purchase of such Notes, you or the Corporation shall have the right to postpone such Closing Date for a period of not more than seven days, in order to effect whatever changes may thereby be made necessary in the Registration Statement, the Pricing Disclosure Package or the Prospectus, or in any other documents or arrangements, and the Corporation agrees to file promptly any amendments to the Registration Statement, the Pricing Disclosure Package or the Prospectus which may be required. The term “Underwriter” as used in this Agreement shall include any

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person substituted under this Section with like effect as if such person had originally been a party to this Agreement with respect to such Notes.

(b)If, after giving effect to any arrangements for the purchase of the Notes of a defaulting Underwriter or Underwriters by you or the Corporation as provided in subsection (a) above, the aggregate amount of such Notes which remains unpurchased does not exceed one-tenth of the aggregate amount of all the Notes to be purchased at such Closing Date, then the Corporation shall have the right to require each non-defaulting Underwriter to purchase the amount of Notes which such Underwriter agreed to purchase hereunder at such Closing Date and, in addition, to require each non-defaulting Underwriter to purchase its pro rata share (based on the amount of Notes which such Underwriter agreed to purchase hereunder) of the Notes of such defaulting Underwriter or Underwriters for which such arrangements have not been made; but nothing herein shall relieve a defaulting Underwriter from liability for its default.

(c)If, after giving effect to any arrangements for the purchase of the Notes of a defaulting Underwriter or Underwriters by you or the Corporation as provided in subsection (a) above, the aggregate amount of such Notes which remains unpurchased exceeds one-tenth of the aggregate amount of all the Notes to be purchased at such Closing Date, or if the Corporation shall not exercise the right described in subsection (b) above to require non-defaulting Underwriters to purchase Notes of a defaulting Underwriter or Underwriters, then this Agreement shall thereupon terminate, without liability on the part of any non-defaulting Underwriter or the Corporation, except for the expenses to be borne by the Corporation as provided in Section 5(j) hereof and the indemnity and contribution agreement in Section 7 hereof; but nothing herein shall relieve a defaulting Underwriter from liability for its default.

9.Representations and Indemnities to Survive Delivery. The respective indemnities, agreements, representations, warranties and other statements of the Corporation or its officers and of the several Underwriters set forth in or made pursuant to this Agreement will remain in full force and effect, regardless of any investigation, or statement as to the results thereof, made by or on behalf of any Underwriter or the Corporation, or any of its officers or directors or any controlling person, and will survive delivery of and payment for the Notes.

10.Reliance on Your Acts. In all dealings hereunder, the Representatives shall act on behalf of each of the Underwriters, and the Corporation shall be entitled to act and rely upon any statement, request, notice or agreement on behalf of any Underwriter made or given by the Representatives.

11.No Fiduciary Relationship.  The Corporation acknowledges and agrees that (i) the purchase and sale of the Notes pursuant to this Agreement is an arm’s-length commercial transaction between the Corporation on the one hand, and the Underwriters on the other hand, (ii) in connection with the offering contemplated hereby and the process leading to such transaction, each Underwriter is and has been acting solely as a principal and is not the agent or fiduciary of the Corporation or its shareholders, creditors, employees, or any other party, (iii) no Underwriter has assumed or will assume an advisory or fiduciary responsibility in favor of the

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Corporation with respect to the offering contemplated hereby or the process leading thereto (irrespective of whether such Underwriter has advised or is currently advising the Corporation on other matters) and no Underwriter has any obligation to the Corporation with respect to the offering contemplated hereby except the obligations expressly set forth in this Agreement, (iv) the Underwriters and their respective affiliates may be engaged in a broad range of transactions that involve interests that differ from those of the Corporation, and (v) the Underwriters have not provided any legal, accounting, regulatory or tax advice with respect to the transaction contemplated hereby and the Corporation has consulted its own legal, accounting, regulatory and tax advisors to the extent it deemed appropriate.

12.Notices. All communications hereunder will be in writing and, if sent to the Underwriters, will be mailed or telecopied and confirmed to BNY Mellon Capital Markets, LLC, 32 Old Slip, 16th Floor, New York, NY 10286, Attention: Debt Capital Markets, Telephone (888) 269-6264; Citigroup Global Markets Inc., 388 Greenwich Street, New York, NY 10013, Attention: General Counsel, Fax: (212) 816-7912; Goldman, Sachs & Co., 200 West Street, New York, New York 10282, Attention: Registration Department, Telephone (866) 471-2526 and UBS Securities LLC, 677 Washington Boulevard, Stamford, CT 06901, Telephone (203) 719-1088, Facsimile (203) 719-0495, Attention: Fixed Income Syndicate, or, if sent to the Corporation, will be mailed or telecopied and confirmed to it at 550 S. Tryon Street, Charlotte, N.C. 28202, facsimile (980) 373-3699, attention of Treasurer. Any such communications shall take effect upon receipt thereof.

13.Business Day. As used herein, the term “business day” shall mean any day when the Commission’s office in Washington, D.C. is open for business.

14.Successors. This Agreement shall inure to the benefit of and be binding upon the Underwriters and the Corporation and their respective successors.  Nothing expressed or mentioned in this Agreement is intended or shall be construed to give any person, firm or corporation, other than the parties hereto and their respective successors and the controlling persons, officers and directors referred to in Section 7 and their respective successors, heirs and legal representatives, any legal or equitable right, remedy or claim under or in respect of this Agreement or any provision herein contained; this Agreement and all conditions and provisions hereof being intended to be and being for the sole and exclusive benefit of the parties hereto and their respective successors and said controlling persons, officers and directors and their respective successors, heirs and legal representatives, and for the benefit of no other person, firm or corporation. No purchaser of Notes from any Underwriter shall be deemed to be a successor or assign by reason merely of such purchase.

15.Counterparts. This Agreement may be executed in two or more counterparts, each of which shall be deemed to be an original, but all of which together shall constitute one and the same instrument.

16.Applicable Law. This Agreement shall be governed by, and construed in accordance with, the laws of the State of New York.

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If the foregoing is in accordance with your understanding, kindly sign and return to us two counterparts hereof, and upon confirmation and acceptance by the Underwriters, this letter and such confirmation and acceptance will become a binding agreement between the Corporation, on the one hand, and each of the Underwriters, on the other hand, in accordance with its terms.

Very truly yours,
DUKE ENERGY CORPORATION
By:	/s/ M. Allen Carrick
	Name:	M. Allen Carrick
	Title:	Assistant Treasurer

The foregoing Underwriting Agreement is hereby
confirmed and accepted as of the date first above written.

BNY Mellon Capital Markets, LLC
Citigroup Global Markets Inc.
Goldman, Sachs & Co.
UBS Securities LLC

On behalf of each of the Underwriters

BNY Mellon Capital Markets, LLC		Citigroup Global Markets Inc.
By:	/s/ Dan Klinger	By:	/s/ Jack D. McSpadden, Jr.
	Name: Dan Klinger		Name:  Jack D. McSpadden, Jr.
	Title:  Managing Director		Title:  Managing Director
Goldman, Sachs & Co.		UBS Securities LLC
By:	/s/ Goldman, Sachs & Co.	By:	/s/ Christopher Forshner
	(Goldman, Sachs & Co.)		Name:  Christopher Forshner
			Title:  Managing Director, UBS
			Investment Bank
		By:	/s/ Mark Spadaccini
			Name:  Mark Spadaccini
			Title:  Associate Director, Debt Capital
			Markets, UBS Investment Bank

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SCHEDULE A

Underwriter	Principal Amount of Notes to be Purchased
BNY Mellon Capital Markets, LLC	112,500,000
Citigroup Global Markets Inc.	112,500,000
Goldman, Sachs & Co.	112,500,000
UBS Securities LLC	112,500,000
BNP Paribas Securities Corp.	37,500,000
CastleOak Securities, L.P.	12,500,000
Total	$	500,000,000

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SCHEDULE B

PRICING DISCLOSURE PACKAGE

1)Base Prospectus

2)Preliminary Prospectus Supplement dated August 22, 2011

3)Permitted Free Writing Prospectuses

a)Pricing Term Sheet attached as Schedule C hereto

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SCHEDULE C

Filed pursuant to Rule 433

August 22, 2011

Relating to

Preliminary Prospectus Supplement dated August 22, 2011 to

Prospectus dated September 29, 2010

Registration Statement No. 333-169633

Duke Energy Corporation
$500,000,000 3.55% Senior Notes due 2021

Pricing Term Sheet

Issuer:	Duke Energy Corporation
Settlement:	August 25, 2011 (T+3)
Trade Date:	August 22, 2011
Interest Payment Dates:	Semi-annually on March 15 and September 15, commencing March 15, 2012
Security Description:	3.55% Senior Notes due 2021
Principal Amount:	$500,000,000
Maturity:	September 15, 2021
Coupon:	3.55%
Benchmark Treasury:	2.125% due August 15, 2021
Benchmark Treasury Yield:	2.102%
Spread to Benchmark Treasury:	+145 bps
Yield to Maturity:	3.552%
Initial Price to Public:	99.981% per Note
Optional Redemption:	At any time before three months prior to maturity, redeemable at the Treasury Rate + 25 bps. At any time on or after three months prior to maturity, redeemable at par.
Denominations:	$2,000 or any integral multiple of $1,000 in excess thereof

C-1

CUSIP / ISIN:	26441C AF2 / US26441CAF23
Joint Book-Running Managers:	BNY Mellon Capital Markets, LLC Citigroup Global Markets Inc. Goldman, Sachs & Co. UBS Securities LLC
Co-Manager:	BNP Paribas Securities Corp.
Junior Co-Manager:	CastleOak Securities, L.P.

The issuer has filed a registration statement (including a prospectus) with the SEC for the offering to which this communication relates.  Before you invest, you should read the prospectus in that registration statement and other documents the issuer has filed with the SEC for more complete information about the issuer and this offering.  You may get these documents for free by visiting EDGAR on the SEC Web site at www.sec.gov.  Alternatively, the issuer, any underwriter or any dealer participating in the offering will arrange to send you the prospectus if you request it by calling BNY Mellon Capital Markets, LLC at (800) 269-6864, Citigroup Global Markets Inc. at (877) 858-5407, Goldman, Sachs & Co. at (866) 471-2526 or UBS Securities LLC at (877) 827-6444, ext. 561 3884.

C-2

Schedule D

1.Fifteenth Supplemental Indenture, dated as of April 3, 2006, among the registrant, Duke Energy and JPMorgan Chase Bank, N.A. (as successor to Guaranty Trust Company of New York), as trustee (the “Trustee”), supplementing the Senior Indenture, dated as of September 1, 1998, between Duke Energy Carolinas, LLC (formerly Duke Energy Corporation) and the Trustee.

2.Amended and Restated Credit Agreement, dated as of June 28, 2007, among Duke Energy Corporation, Duke Energy Carolinas, LLC, Duke Energy Ohio, Inc., Duke Energy Indiana, Inc. and Duke Energy Kentucky, Inc., as Borrowers, the banks listed therein, Wachovia Bank, National Association, as Administrative Agent, JPMorgan Chase Bank, National Association, Barclays Bank PLC, Bank of America, N.A. and Citibank, N.A., as Co-Syndication Agents and The Bank of Tokyo-Mitsubishi, Ltd., New York Branch and Credit Suisse, as Co-Documentation Agents, as amended by Amendment No. 1 thereto, dated as of March 10, 2008.

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