# EDGAR Filing Document

**Accession Number:** 0000081020
**File Stem:** 0001104659-23-035999
**Filing Date:** 2023-3
**Character Count:** 185595
**Document Hash:** b29bf1fad593c4e854c0642a2793b590
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001104659-23-035999.hdr.sgml**: 20230323

**ACCESSION NUMBER**: 0001104659-23-035999

**CONFORMED SUBMISSION TYPE**: 8-K

**PUBLIC DOCUMENT COUNT**: 15

**CONFORMED PERIOD OF REPORT**: 20230321

**ITEM INFORMATION**: Other Events

**ITEM INFORMATION**: Financial Statements and Exhibits

**FILED AS OF DATE**: 20230323

**DATE AS OF CHANGE**: 20230323

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Duke Energy Indiana, LLC
- **CENTRAL INDEX KEY:** 0000081020
- **STANDARD INDUSTRIAL CLASSIFICATION:** ELECTRIC SERVICES [4911]
- **IRS NUMBER:** 350594457
- **STATE OF INCORPORATION:** IN
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 8-K
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-03543
- **FILM NUMBER:** 23755484

**BUSINESS ADDRESS:**
- **STREET 1:** 526 SOUTH CHURCH STREET
- **STREET 2:** EC03T
- **CITY:** CHARLOTTE
- **STATE:** NC
- **ZIP:** 28202
- **BUSINESS PHONE:** 704-594-6200

**MAIL ADDRESS:**
- **STREET 1:** 526 SOUTH CHURCH STREET
- **STREET 2:** EC03T
- **CITY:** CHARLOTTE
- **STATE:** NC
- **ZIP:** 28202

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** Duke Energy Indiana, Inc.
- **DATE OF NAME CHANGE:** 20061003

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** PSI ENERGY INC
- **DATE OF NAME CHANGE:** 19920703

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** PUBLIC SERVICE CO OF INDIANA INC
- **DATE OF NAME CHANGE:** 19900509

?xml version="1.0" encoding="utf-8"?

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): **March 21, 2023**

**DUKE ENERGY INDIANA, LLC**

(Exact Name of Registrant as Specified in its Charter)

---

| | | |
|:---|:---|:---|
| &nbsp;&nbsp;**Indiana** | &nbsp;&nbsp;**1-3543** | &nbsp;&nbsp;**35-0594457** |
| &nbsp;&nbsp;(State or Other Jurisdiction of<br> Incorporation or Organization) | &nbsp;&nbsp;(Commission File Number) | &nbsp;&nbsp;(IRS Employer<br> Identification No.) |

---

**1000 East Main Street, Plainfield, Indiana 46168**

(Address of Principal Executive Offices, including Zip code)

**(704) 382-3853**

(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:

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

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

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

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

Securities registered pursuant to Section 12(b) of the Act:

---

| | | |
|:---|:---|:---|
| **Title of each class:** | **Trading Symbol(s):** | **Name of each exchange on which registered:** |

---

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

◻ Emerging growth company

◻ If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.

**Item 8.01. Other Events.**

On March 23, 2023, Duke Energy Indiana, LLC (the "Company") consummated the issuance and sale of the securities described below pursuant to an underwriting agreement, dated March 21, 2023 (the "Underwriting Agreement"), with BofA Securities, Inc., Citigroup Global Markets Inc., SMBC Nikko Securities America, Inc., TD Securities (USA) LLC and Truist Securities, Inc., 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 First Mortgage Bonds, Series AAAA, 5.40%, Due April 1, 2053 (the "Bonds"). The Bonds were sold to the Underwriters at a discount to their principal amount. The Bonds were issued under the Company's Indenture of Mortgage or Deed of Trust, dated September 1, 1939, between the Company and Deutsche Bank National Trust Company, as Trustee, as amended and supplemented from time to time (the "Indenture"), including by the Seventy-First Supplemental Indenture, dated as of March 23, 2023 (the "Supplemental Indenture"). The disclosure in this Item 8.01 is qualified in its entirety by the provisions of the Indenture, the Supplemental Indenture, which together with the form of global bonds evidencing the Bonds, is filed as Exhibit 4.1 hereto, and the Underwriting Agreement, which is filed as Exhibit 99.1 hereto. Such exhibits are incorporated herein by reference. Also, in connection with the issuance and sale of the Bonds, the Company is filing a legal opinion regarding the validity of the Bonds as Exhibit 5.1 to this Form 8-K for the purpose of incorporating the opinion into the Company's Registration Statement No. 333-267583-04.

**Item 9.01. Financial Statements and Exhibits.**

(d) Exhibits

---

| | |
|:---|:---|
| **Exhibit** | **Description** |
| [Exhibit 4.1](tm237509d5_ex4-1.htm) | [Seventy-First Supplemental Indenture, dated as of March 23, 2023, between the Company and Deutsche Bank National Trust Company, as Trustee and form of global bonds.](tm237509d5_ex4-1.htm) |
| [Exhibit 5.1](tm237509d5_ex5-1.htm) | [Opinion regarding validity of the Bonds.](tm237509d5_ex5-1.htm) |
| [Exhibit 23.1](tm237509d5_ex5-1.htm) | [Consent (included as part of Exhibit 5.1).](tm237509d5_ex5-1.htm) |
| [Exhibit 99.1](tm237509d5_ex99-1.htm) | [Underwriting Agreement, dated March 21, 2023, among the Company and BofA Securities, Inc., Citigroup Global Markets Inc., SMBC Nikko Securities America, Inc., TD Securities (USA) LLC and Truist Securities, Inc., as representatives of the several underwriters named therein.](tm237509d5_ex99-1.htm) |
| Exhibit 104 | Cover Page Interactive Data file (the Cover Page Interactive Data file is embedded within the Inline XBRL document) |

---

**SIGNATURES**

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 INDIANA, LLC | DUKE ENERGY INDIANA, LLC | DUKE ENERGY INDIANA, LLC |
| Date: March 23, 2023 |  |  |  |
|  | By: | /s/ Robert T. Lucas III, Esq. | /s/ Robert T. Lucas III, Esq. |
|  |  | Name: | Robert T. Lucas III, Esq. |
|  |  | Title: | Assistant Secretary |

---

## Exhibit 4.1

**Exhibit 4.1**

**Seventy-first SUPPLEMENTAL<br> INDENTURE**

**TO**

**INDENTURE DATED SEPTEMBER 1, 1939**

**DUKE ENERGY INDIANA, LLC**

**TO**

**DEUTSCHE BANK NATIONAL TRUST COMPANY<br> AS TRUSTEE**

**DATED AS OF March 23, 2023**

**CREATING<br> FIRST MORTGAGE BONDS, Series AAAA, 5.40%, DUE APRIL 1, 2053**

**AND**

**OTHERWISE SUPPLEMENTING AND AMENDING THE INDENTURE**

**TABLE OF CONTENTS**

---

| | | |
|:---|:---|:---|
|  |  | **<u>Page</u>** |
| PARTIES: | PARTIES: | PARTIES: |
| Company (Duke Energy Indiana, LLC, formerly named Duke Energy Indiana, Inc., formerly named each of PSI Energy, Inc. and Public Service Company of Indiana, Inc., and successor by consolidation to Initial Mortgagor (Public Service Company of Indiana)), and Trustee | Company (Duke Energy Indiana, LLC, formerly named Duke Energy Indiana, Inc., formerly named each of PSI Energy, Inc. and Public Service Company of Indiana, Inc., and successor by consolidation to Initial Mortgagor (Public Service Company of Indiana)), and Trustee | 1 |
| RECITALS: | RECITALS: |  |
| Indenture of the Initial Mortgagor, dated September 1, 1939, and First Supplemental Indenture thereto of the Initial Mortgagor, dated as of March 1, 1941 | Indenture of the Initial Mortgagor, dated September 1, 1939, and First Supplemental Indenture thereto of the Initial Mortgagor, dated as of March 1, 1941 | 1 |
| Consolidation of Initial Mortgagor (and four other companies) into the Company | Consolidation of Initial Mortgagor (and four other companies) into the Company | 1 |
| Execution by Company of Second Supplemental Indenture to the original Indenture | Execution by Company of Second Supplemental Indenture to the original Indenture | 1 |
| Company substituted for Initial Mortgagor under Indenture | Company substituted for Initial Mortgagor under Indenture | 1 |
| Execution by Company of Third through the Seventieth Supplemental Indentures to the original Indenture | Execution by Company of Third through the Seventieth Supplemental Indentures to the original Indenture | 2 |
| LaSalle Bank National Association appointed as Successor Trustee | LaSalle Bank National Association appointed as Successor Trustee | 2 |
| Resignation of Bank of America, N.A., as successor by merger to LaSalle Bank National Association, and appointment of Deutsche Bank National Trust Company as Successor Trustee | Resignation of Bank of America, N.A., as successor by merger to LaSalle Bank National Association, and appointment of Deutsche Bank National Trust Company as Successor Trustee | 2 |
| Change of name of Company from Public Service Company of Indiana, Inc. to PSI Energy, Inc., to Duke Energy Indiana, Inc., and thereafter to Duke Energy Indiana, LLC | Change of name of Company from Public Service Company of Indiana, Inc. to PSI Energy, Inc., to Duke Energy Indiana, Inc., and thereafter to Duke Energy Indiana, LLC | 3 |
| Amount of bonds presently outstanding under the Indenture | Amount of bonds presently outstanding under the Indenture | 3 |
| Seventy-First Supplemental Indenture and Bonds of Series AAAA authorized | Seventy-First Supplemental Indenture and Bonds of Series AAAA authorized | 3 |
| Conditions precedent performed | Conditions precedent performed | 3 |
| EXECUTING CLAUSE | EXECUTING CLAUSE | 3 |
| &nbsp;&nbsp;&nbsp;ARTICLE I. | &nbsp;&nbsp;&nbsp;ARTICLE I. |  |
| FIRST MORTGAGE BONDS, SERIES AAAA, 5.40%, DUE APRIL 1, 2053 | FIRST MORTGAGE BONDS, SERIES AAAA, 5.40%, DUE APRIL 1, 2053 | 4 |
| *Section 1.* | Creation and designation of Bonds of Series AAAA | 4 |
| *Section 2.* | Bonds of Series AAAA to be in registered form only | 4 |
|  | Form of Face of Bond Of Series AAAA | 7 |
|  | Form of Reverse of Bond of Series AAAA | 9 |
|  | Form of Trustee's Certificate | 13 |
| *Section 3.* | Date of Bonds of Series AAAA | 13 |
| *Section 4.* | Maturity date, interest rate and payment date, and principal payment of Bonds of Series AAAA | 13 |
| *Section 5.* | Place and manner of payment of Bonds of Series AAAA | 13 |
| *Section 6.* | Denominations and numbering of definitive Bonds of Series AAAA | 13 |
|  | Temporary Bonds of Series AAAA and exchange thereof for definitive bonds | 13 |
| *Section 7.* | Maintenance and Renewal Fund shall not apply to Bonds of Series AAAA | 13 |
| *Section 8.* | Inspection requirements shall not apply to Bonds of Series AAAA | 14 |

---

ii

---

| | | |
|:---|:---|:---|
| Section 9. | Company's right to further amend the original Indenture | 14.0 |
| Section 10. | No sinking fund for Bonds of Series AAAA | 15.0 |
| ARTICLE II. | ARTICLE II. |  |
| ISSUANCE OF BONDS OF SERIES AAAA. | ISSUANCE OF BONDS OF SERIES AAAA. | 15.0 |
| Section 1. | Aggregate principal amount of Bonds of Series AAAA issuable at once | 15.0 |
| Section 2. | Issuance of additional Bonds of Series AAAA | 15.0 |
| ARTICLE III. | ARTICLE III. |  |
| INDENTURE AMENDMENTS. | INDENTURE AMENDMENTS. | 15.0 |
| Section 1. | Amendments to Article I of the original Indenture | 15.0 |
| Section 2. | Amendments to Article VII of the original Indenture | 15.0 |
| ARTICLE IV. | ARTICLE IV. |  |
| CONCERNING THE TRUSTEE. | CONCERNING THE TRUSTEE. | 17.0 |
| Acceptance of trusts by Trustee | Acceptance of trusts by Trustee | 17.0 |
| Trustee not responsible for validity or sufficiency of Seventy-First Supplemental Indenture, etc. | Trustee not responsible for validity or sufficiency of Seventy-First Supplemental Indenture, etc. | 17.0 |
| Terms and conditions of Article XVII of the original Indenture to be applied to the Seventy-First Supplemental Indenture | Terms and conditions of Article XVII of the original Indenture to be applied to the Seventy-First Supplemental Indenture | 17.0 |
| ARTICLE V. | ARTICLE V. |  |
| MISCELLANEOUS PROVISIONS. | MISCELLANEOUS PROVISIONS. | 18.0 |
| Section 1. | References in any article or section of the original Indenture refer to such article or section as amended by all Seventy-First Supplemental Indentures thereto | 18.0 |
| Section 2. | Operation and construction of amendments to the original Indenture | 18.0 |
| Section 3. | All covenants, etc., for sole benefit of parties to the Seventy-First Supplemental Indenture and holders of bonds | 18.0 |
| Section 4. | Table of contents and headings of articles not part of Seventy-First Supplemental Indenture | 18.0 |
| Section 5. | Execution of Seventy-First Supplemental Indenture in counterparts; Electronic Signatures | 18.0 |
| Section 6. | Payments due on non-Business Days | 19.0 |
| ATTESTATION CLAUSE | ATTESTATION CLAUSE | 21.0 |
| SIGNATURES | SIGNATURES | 22.0 |
| ACKNOWLEDGMENT BY COMPANY | ACKNOWLEDGMENT BY COMPANY | 23.0 |
| ACKNOWLEDGMENT BY TRUSTEE | ACKNOWLEDGMENT BY TRUSTEE | 24.0 |

---

iii

SEVENTY-FIRST SUPPLEMENTAL INDENTURE dated as of the 23<sup>rd</sup> day of March, 2023, made and entered into by and between DUKE ENERGY INDIANA, LLC (hereinafter commonly referred to as the "Company"), a limited liability company organized and existing under the laws of the State of Indiana, formerly named Duke Energy Indiana, Inc., and formerly named each of PSI Energy, Inc. and Public Service Company of Indiana, Inc., and the successor by consolidation to Public Service Company of Indiana, an Indiana corporation, party of the first part, and DEUTSCHE BANK NATIONAL TRUST COMPANY, a national banking association organized and existing under the laws of the United States and having its office or place of business in the City of Chicago, State of Illinois, successor trustee to Bank of America, N.A., as successor by merger to LaSalle Bank National Association, which was the successor trustee to The First National Bank of Chicago (hereinafter commonly referred to as the "Trustee"), party of the second part, PARTIES:

WITNESSETH:

WHEREAS, Public Service Company of Indiana (hereinafter commonly referred to as the "Initial Mortgagor"), prior to its consolidation with certain other corporations to form the Company, executed and delivered to the Trustee a certain indenture of mortgage or deed of trust (hereinafter called the "original Indenture" when referred to as existing prior to any amendment thereto, and the "Indenture" when referred to as heretofore, now or hereafter amended), dated September 1, 1939, and a First Supplemental Indenture thereto, dated as of March 1, 1941, to secure the bonds of the Initial Mortgagor, its successors and assigns, issued from time to time under the Indenture in series for the purposes of and subject to the limitations specified in the Indenture; and

WHEREAS, the Company on September 6, 1941, became, through a consolidation, the successor of the Initial Mortgagor (and four other companies) and succeeded to all the rights and became liable for all the obligations of the Initial Mortgagor (and such other companies); and

WHEREAS, after said consolidation, the Company executed and delivered a Second Supplemental Indenture, dated as of November 1, 1941, to the original Indenture for the purposes, among others, of (i) the making by the Company of an agreement of assumption and adoption by it of the Indenture, (ii) the assumption by the Company of the bonds (and interest and premium, if any, thereon) issued or to be issued under the Indenture, and of all terms, covenants and conditions binding upon it under the Indenture, and the agreeing by the Company to pay, perform and fulfill the same, and (iii) the conveying to the Trustee upon the trusts declared in the Indenture, but subject to any outstanding liens and encumbrances, all the property which the Company then owned or which it might thereafter acquire, except property of a character similar to the property of the Initial Mortgagor which is excluded from the lien of the Indenture; and

WHEREAS, all conditions have been met and all acts and things necessary have been done and performed to make the Indenture the valid and binding agreement of the Company and to substitute the Company for the Initial Mortgagor under the Indenture, and to vest the Company with each and every right and power of the Initial Mortgagor, including the right and power to issue bonds thereunder; and

WHEREAS, the Company has subsequently executed and delivered, for purposes authorized under the Indenture, a Third Supplemental Indenture dated as of March 1, 1942, a Fourth Supplemental Indenture dated as of May 1, 1943, a Fifth Supplemental Indenture dated as of August 1, 1944, a Sixth Supplemental Indenture dated as of September 1, 1945, a Seventh Supplemental Indenture dated as of November 1, 1947, an Eighth Supplemental Indenture dated as of January 1, 1949, a Ninth Supplemental Indenture dated as of May 1, 1950, a Tenth Supplemental Indenture dated as of July 1, 1952, an Eleventh Supplemental Indenture dated as of January 1, 1954, a Twelfth Supplemental Indenture dated as of October 1, 1957, a Thirteenth Supplemental Indenture dated as of February 1, 1959, a Fourteenth Supplemental Indenture dated as of July 15, 1960, a Fifteenth Supplemental Indenture dated as of June 15, 1964, a Sixteenth Supplemental Indenture dated as of January 1, 1969, a Seventeenth Supplemental Indenture dated as of March 1, 1970, an Eighteenth Supplemental Indenture dated as of January 1, 1971, a Nineteenth Supplemental Indenture dated as of January 1, 1972, a Twentieth Supplemental Indenture dated as of February 1, 1974, a Twenty-First Supplemental Indenture dated as of August 1, 1974, a Twenty-Second Supplemental Indenture dated as of August 1, 1975, a Twenty-Third Supplemental Indenture dated as of January 1, 1977, a Twenty-Fourth Supplemental Indenture dated as of October 1, 1977, a Twenty-Fifth Supplemental Indenture dated as of September 1, 1978, a Twenty-Sixth Supplemental Indenture dated as of September 1, 1978, a Twenty-Seventh Supplemental Indenture dated as of March 1, 1979, a Twenty-Eighth Supplemental Indenture dated as of May 1, 1979, a Twenty-Ninth Supplemental Indenture dated as of March 1, 1980, a Thirtieth Supplemental Indenture dated as of August 1, 1980, a Thirty-First Supplemental Indenture dated as of February 1, 1981, a Thirty-Second Supplemental Indenture dated as of August 1, 1981, a Thirty-Third Supplemental Indenture dated as of December 1, 1981, a Thirty-Fourth Supplemental Indenture dated as of December 1, 1982, a Thirty-Fifth Supplemental Indenture dated as of March 30, 1984, a Thirty-Sixth Supplemental Indenture dated as of November 15, 1984, a Thirty-Seventh Supplemental Indenture dated as of August 15, 1985, a Thirty-Eighth Supplemental Indenture dated as of October 1, 1986, a Thirty-Ninth Supplemental Indenture dated as of March 15, 1987, a Fortieth Supplemental Indenture dated as of June 1, 1987, a Forty-First Supplemental Indenture dated as of June 15, 1988, a Forty-Second Supplemental Indenture dated as of August 1, 1988, a Forty-Third Supplemental Indenture dated as of September 15, 1989, a Forty-Fourth Supplemental Indenture dated as of March 15, 1990, a Forty-Fifth Supplemental Indenture dated as of March 15, 1990, a Forty-Sixth Supplemental Indenture dated as of June 1, 1990, a Forty-Seventh Supplemental Indenture dated as of July 15, 1991, a Forty-Eighth Supplemental Indenture dated as of July 15, 1992, a Forty-Ninth Supplemental Indenture dated as of February 15, 1993, a Fiftieth Supplemental Indenture dated as of February 15, 1993, a Fifty-First Supplemental Indenture dated as of February 1, 1994, a Fifty-Second Supplemental Indenture dated as of April 30, 1999, a Fifty-Third Supplemental Indenture dated as of June 15, 2001, a Fifty-Fourth Supplemental Indenture dated as of September 1, 2002, a Fifty-Fifth Supplemental Indenture dated as of February 15, 2003, a Fifty-Sixth Supplemental Indenture dated as of December 1, 2004, a Fifty-Seventh Supplemental Indenture dated as of August 21, 2008, a Fifty-Eighth Supplemental Indenture dated as of December 19, 2008, a Fifty-Ninth Supplemental Indenture dated as of March 23, 2009, a Sixtieth Supplemental Indenture dated as of June 1, 2009, a Sixty-First Supplemental Indenture dated as of October 1, 2009, a Sixty-Second Supplemental Indenture dated as of July 9, 2010, a Sixty-Third Supplemental Indenture dated as of September 23, 2010, a Sixty-Fourth Supplemental Indenture dated as of December 1, 2011, a Sixty-Fifth Supplemental Indenture dated as of March 15, 2012, a Sixty-Sixth Supplemental Indenture dated as of July 11, 2013, a Sixty-Seventh Supplemental Indenture dated as of January 1, 2016, a Sixty-Eighth Supplemental Indenture dated as of May 12, 2016, a Sixty-Ninth Supplemental Indenture dated as of September 27, 2019 and a Seventieth Supplemental Indenture dates as of March 12, 2020, each supplementing and amending the Indenture; and

WHEREAS, the Thirty-Fifth Supplemental Indenture authorized and appointed LaSalle Bank National Association, a national banking association duly organized and existing under the laws of the United States of America with its principal office in Chicago, Illinois and formerly named LaSalle National Bank, as Successor Trustee to The First National Bank of Chicago, which appointment was accepted, and all trust powers under the Indenture were thereby transferred from The First National Bank of Chicago to LaSalle Bank National Association; and

WHEREAS, by an Instrument of Resignation, Appointment and Acceptance dated as of December 15, 2008, Bank of America, N.A., as successor by merger to LaSalle Bank National Association, resigned as trustee and the Company appointed the Trustee as Successor Trustee thereto, which appointment was thereby accepted by the Trustee effective as of that date, and all trust powers were thereby transferred from Bank of America, N.A. to the Trustee; and

WHEREAS, the Forty-Sixth Supplemental Indenture amended the Indenture to reflect a change in the name of the Company from Public Service Company of Indiana, Inc. to PSI Energy, Inc. effective as of April 20, 1990, the Fifty-Seventh Supplemental Indenture amended the Indenture to reflect a change in the name of the Company from PSI Energy, Inc. to Duke Energy Indiana, Inc., effective as of October 1, 2006, and the Sixty-Seventh Supplemental Indenture amended the Indenture to reflect the Company's conversion of its form of organization effective January 1, 2016 from an Indiana corporation to an Indiana limited liability company named "Duke Energy Indiana, LLC"; and

WHEREAS, as of March 23, 2023, the only bonds that have been heretofore issued under the Indenture which are now outstanding are $38,000,000 aggregate principal amount of "PSI Energy, Inc. First Mortgage Bonds, Series DDD, 8.31%, Due September 1, 2032" and $500,000,000 aggregate principal amount of "Duke Energy Indiana, Inc. First Mortgage Bonds, Series LLL, 6.35%, Due August 15, 2038" and $450,000,000 aggregate principal amount of "Duke Energy Indiana, Inc. First Mortgage Bonds, Series MMM, 6.45%, Due April 1, 2039" and $250,000,000 aggregate principal amount of "Duke Energy Indiana, Inc. First Mortgage Bonds, Series UUU, 4.20%, Due March 15, 2042" and $350,000,000 aggregate principal amount of "Duke Energy Indiana, Inc. First Mortgage Bonds, Series WWW, 4.90%, Due July 15, 2043" and $500,000,000 aggregate principal amount of "Duke Energy Indiana, LLC First Mortgage Bonds, Series XXX, 3.75%, Due May 15, 2046" and $500,000,000 aggregate principal amount of "Duke Energy Indiana, LLC First Mortgage Bonds, Series YYY, 3.25%, Due October 1, 2049" and $500,000,000 aggregate principal amount of "Duke Energy Indiana, LLC First Mortgage Bonds, Series ZZZ, 2.75%, Due April 1, 2050"; and

WHEREAS, in accordance with the provisions of Section 1 of Article XVIII of the Indenture, the Board of Directors has authorized the execution and delivery by the Company of a Seventy-First Supplemental Indenture, substantially in the form of this Seventy-First Supplemental Indenture, for the purpose of creating a seventy-second series of bonds to be issued under the Indenture, to be known as "Duke Energy Indiana, LLC First Mortgage Bonds, Series AAAA, 5.40%, Due April 1, 2053" (such bonds being hereinafter referred to as the "Bonds of Series AAAA"), and prescribing the form and substance of the Bonds of Series AAAA and the terms, provisions and characteristics thereof, and for the purpose of adding to the covenants and agreements of the Company for the protection of the bondholders and of the trust estate, of providing the terms and conditions for the redemption of the Bonds of Series AAAA, of adding certain other covenants and undertakings with respect to the Bonds of Series AAAA and of making such changes in the Indenture as are deemed necessary or desirable and as are permitted by the Indenture; and

WHEREAS, all conditions and requirements necessary to make this Seventy-First Supplemental Indenture a valid, binding and legal instrument have been done, performed and fulfilled and the execution and delivery hereof have been in all respects duly authorized:

NOW, THEREFORE, in consideration of the premises, and of the acceptance and purchase of the Bonds of Series AAAA by the holders and registered owners thereof, and of the sum of One Dollar ($1.00) duly paid by the Trustee to the Company, the receipt whereof is hereby acknowledged, and in accordance with and subject to the terms and provisions of the Indenture, the Company and the Trustee, respectively, have entered into, executed and delivered this Seventy-First Supplemental Indenture for the uses and purposes hereinafter expressed, that is to say:

ARTICLE I.

FIRST MORTGAGE BONDS, Series AAAA, 5.40%, DUE APRIL 1, 2053

*Section 1.* There are hereby created a seventy-second series of bonds to be issued under and secured by the Indenture, to be designated as "Duke Energy Indiana, LLC First Mortgage Bonds, Series AAAA, 5.40%, Due April 1, 2053" (such series being the Bonds of Series AAAA hereinbefore referred to).

*Section 2.* The following provisions shall apply to the Bonds of Series AAAA.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(a) The Bonds of Series AAAA shall be issued in fully registered form only. However, except as provided elsewhere in this Section, the registered owner of all of the Bonds of Series AAAA initially shall be The Depository Trust Company ("DTC") or its nominee, and such Bonds of Series AAAA initially shall be registered in the name of DTC or its nominee. Payment of the principal of or interest on Bonds registered in the name of DTC or its nominee shall be made in the manner specified in DTC's rules and by-laws. DTC (and any successor securities depository) and its (or their) participating institutions (each, a "Participant") shall maintain a book-entry registration and transfer system with respect to ownership of beneficial interests in the Bonds of Series AAAA (the "Book-Entry System").

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(b) The Bonds of Series AAAA initially shall be issued in the form of one or more authenticated, fully registered bonds for such series (each, a "Global Security") which (i) need not be in the form of a lithographed or engraved certificate, but may be typewritten or printed on ordinary paper or such paper as the Trustee may reasonably request, (ii) shall represent and be denominated in an amount equal to 100% of the aggregate principal amount of the Bonds of Series AAAA issued under this Supplemental Indenture, (iii) shall be executed by the Company and authenticated by the Trustee in accordance with the provisions of the Indenture, (iv) shall be registered in the name of DTC or its nominee, and delivered to DTC or its nominee or a custodian therefor, and (v) shall contain the following legend on the face thereof:

Unless this certificate is presented by an authorized representative of The Depository Trust Company, a New York corporation ("DTC"), to issuer or its agent for registration of transfer, exchange or payment, and any certificate issued is registered in the name of Cede & Co. or in such other name as is requested by an authorized representative of DTC (and any payment is made to Cede & Co. or to such other entity as is requested by an authorized representative of DTC), ANY TRANSFER, PLEDGE OR OTHER USE HEREOF FOR VALUE OR OTHERWISE BY OR TO ANY PERSON IS WRONGFUL inasmuch as the registered holder hereof, Cede & Co., has an interest herein.

Unless and until it is exchanged in whole or in part for Bonds of Series AAAA in definitive certificated form, each Global Security representing the Bonds of Series AAAA may not be transferred except as a whole by DTC to a nominee of DTC or by a nominee of DTC to DTC or another nominee of DTC or by DTC or any such nominee to a successor securities depository or a nominee of any such successor securities depository.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(c) The Trustee and the Company may treat Cede & Co. or its nominee, or any successor securities depository or nominee thereof (collectively, the "Depository") as the sole and exclusive owner of the Bonds of Series AAAA, registered in its name for the purposes of payment of the principal or redemption price of or interest on the Bonds of Series AAAA, giving any notice permitted or required to be given to holders of the Bonds of Series AAAA under the Indenture or this Supplemental Indenture, registering the transfer of the Bonds of Series AAAA, obtaining any consent or other action to be taken by holders of the Bonds of Series AAAA, and for all other purposes whatsoever and neither the Trustee nor the Company shall be affected by any notice to the contrary. Neither the Company nor the Trustee nor any registrar nor any paying agent shall have any responsibility or obligation to any Participant, any person claiming a beneficial ownership interest in the Bonds of Series AAAA under or through the Depository or any Participant, or any other person which is not shown on the registration books as being a holder of the Bonds of Series AAAA with respect to (i) the accuracy of any records maintained by the Depository or any Participant; (ii) the payment by the Depository to any Participant of any amount in respect of the principal or interest on the Bonds of Series AAAA or the redemption price of the Bonds of Series AAAA; (iii) the payment by any Participant to any owner of a beneficial ownership interest in the Bonds of Series AAAA, in respect of the principal of or interest on the Bonds of Series AAAA or (iv) any consent or other action taken by the Depository as owner of the Bonds of Series AAAA. The Trustee shall pay all principal of and interest on the Bonds of Series AAAA only to or upon the order of the registered holder or holders of the Bonds of Series AAAA, as shown on the registration books, and all such payments shall be valid and effective to fully satisfy and discharge the Company's obligations with respect to the principal or redemption price of and interest on the Bonds of Series AAAA, to the extent of the sum or sums so paid. No person other than a holder of the Bonds of Series AAAA, as shown on the registration books of DTC, shall receive an authenticated Bond evidencing the obligation of the Company to make payment of the principal of and interest on the Bonds of Series AAAA, pursuant to the Indenture and this Supplemental Indenture. Upon delivery by DTC to the Trustee of written notice to the effect that DTC has determined to substitute a new nominee for Cede & Co, and subject to the provisions of the Indenture and this Supplemental Indenture, the word "Cede & Co.", as used in this Supplemental Indenture, shall refer to each new nominee of DTC.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(d) In the event that after the occurrence of an event of default relating to the Bonds of Series AAAA that has not been cured or waived, holders of a majority in aggregate principal amount of the beneficial interests in the Bonds of Series AAAA, as reflected in the books and records of the Depository, notify the Trustee, through the Depository or any Participant, that the continuation of the Book-Entry System is no longer in the best interests of such holders of beneficial interests in the Bonds of Series AAAA, then the Trustee shall notify the Depository and the Company, and the Depository will notify each Participant of the availability through the Depository of definitive certificated Bonds of Series AAAA.

In such event, the Company shall execute, and the Trustee, upon receipt of a written order of the Company, signed by its President or a Vice President and by its Treasurer, Assistant Treasurer, Secretary or Assistant Secretary (an "Issuer Order"), for the authentication and delivery of definitive certificated Bonds of Series AAAA, will authenticate and deliver Bonds of Series AAAA in definitive certificated form, in any authorized denominations, all pursuant to the provisions of the Indenture, to the person or persons specified to the Trustee in writing by the Depository in the aggregate principal amount of the Global Security or Securities and in exchange for such Global Security or Securities.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(e) If at any time the Depository notifies the Company that it is unwilling or unable to continue as Depository for the Bonds of Series AAAA, or if at any time the Depository shall no longer be registered as a clearing agency in good standing under the Securities Exchange Act of 1934, as amended, or other applicable statute or regulation, the Company may appoint a successor Depository with respect to the Bonds of Series AAAA. If a successor Depository for the Bonds of Series AAAA is not appointed by the Company within 90 days after the Company receives such notice or becomes aware of such condition, the Company will execute, and the Trustee, upon receipt of an Issuer Order for the authentication and delivery of definitive certificated Bonds of Series AAAA, will authenticate and deliver Bonds of Series AAAA in definitive certificated form, in any authorized denominations, all pursuant to the provisions of the Indenture, to the person or persons specified to the Trustee in writing by the Depository in the aggregate principal amount of the Global Security or Securities and in exchange for such Global Security or Securities.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(f) The Company may at any time and in its sole discretion determine that the Bonds of Series AAAA shall no longer be represented by a Global Security or Securities. In such event the Company will execute, and the Trustee, upon receipt of an Issuer Order for the authentication and delivery of definitive certificated Bonds of Series AAAA, will authenticate and deliver the Bonds of Series AAAA in definitive certificated form, in any authorized denominations, all pursuant to the provisions of the Indenture, to the person or persons specified to the Trustee in writing by the Depository in the aggregate principal amount of the Global Security or Securities and in exchange for such Global Security or Securities.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(g) Upon the exchange of any Global Security for the Bonds of Series AAAA in definitive certificated form, in authorized denominations, the Global Security or Securities shall be cancelled by the Trustee.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(h) Whenever the Depository requests the Company and the Trustee to do so, the Trustee and the Company will cooperate with the Depository in taking appropriate action after reasonable notice to (i) make available one or more separate Global Securities evidencing the Bonds of Series AAAA to any Participant having Bonds of Series AAAA credited to its account at the Depository, or (ii) arrange for another Depository to maintain custody of the Global Security or Securities evidencing the Bonds of Series AAAA.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(i) In connection with any notice or other communication to be provided to holders of the Bonds of Series AAAA pursuant to the Indenture and this Supplemental Indenture by the Company or the Trustee with respect to any consent or other action to be taken by holders of the Bonds of Series AAAA, the Company or the Trustee, as the case may be, shall establish a record date for such consent or other action and give the Depository notice of such record date not less than 15 calendar days in advance of such record date to the extent possible. Such notice to the Depository shall be given only so long as a Depository or its nominee is the sole holder of the Bonds of Series AAAA.

The Bonds of Series AAAA and the Trustee's certificate to be endorsed thereon shall be substantially in the following forms, respectively:

[THE REMAINDER OF THIS PAGE HAS BEEN LEFT BLANK INTENTIONALLY.]

(FORM OF FACE OF BOND OF Series AAAA)

[Unless this certificate is presented by an authorized representative of The Depository Trust Company, a New York corporation ("DTC"), to issuer or its agent for registration of transfer, exchange or payment, and any certificate issued is registered in the name of Cede & Co. or in such other name as is requested by an authorized representative of DTC (and any payment is made to Cede & Co. or to such other entity as is requested by an authorized representative of DTC), ANY TRANSFER, PLEDGE OR OTHER USE HEREOF FOR VALUE OR OTHERWISE BY OR TO ANY PERSON IS WRONGFUL inasmuch as the registered holder hereof, Cede & Co., has an interest herein.]<sup>1</sup>

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| | |
|:---|:---|
| No. AAAA-R- | $|
| CUSIP No: 26443T AD8 |  |
| ISIN: US 26443T AD81 |  |

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DUKE ENERGY INDIANA, LLC<br> FIRST MORTGAGE BOND, Series AAAA, 5.40%,<br> DUE APRIL 1, 2053

Duke Energy Indiana, LLC, an Indiana limited liability company (hereinafter called the "Company"), for value received, hereby promises to pay to , or registered assigns, the principal sum of Dollars ($) on the first day of April, 2053 and to pay interest on said sum from the date hereof, until said principal sum is paid, at the rate of 5.40% per annum, payable semi-annually on the first day of April and October in each year, beginning on October 1, 2023. Both the principal of and the interest on this bond shall be payable in any coin or currency of the United States of America which at the time of payment is legal tender for the payment of public and private debts at the office or agency of the Company in Plainfield, Indiana, or, at the option of the registered owner hereof, at the office or agency of the Company in the Borough of Manhattan, The City of New York, State of New York, except that interest on this bond may be paid, at the option of the Company, by check or draft mailed to the address of the person entitled thereto as it appears on the books of the Company maintained for that purpose.

REFERENCE IS MADE TO THE FURTHER PROVISIONS OF THIS BOND SET FORTH ON THE REVERSE HEREOF. SUCH FURTHER PROVISIONS SHALL FOR ALL PURPOSES HAVE THE SAME EFFECT AS THOUGH FULLY SET FORTH AT THIS PLACE.

This bond shall not be valid or become obligatory for any purpose unless and until it shall have been authenticated by the execution by the Trustee, or its successor in trust under the Indenture, of the certificate endorsed hereon.

<sup>1</sup> This should be included only if the Bonds of Series AAAA are being issued in global form.

IN WITNESS WHEREOF, Duke Energy Indiana, LLC has caused this bond to be executed in its name by the manual, electronic or facsimile signature of its President or an Executive Vice President or one of its Vice Presidents, and its company seal or a facsimile thereof to be hereto affixed and attested by the manual or facsimile signature of its Secretary or one of its Assistant Secretaries.

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| | |
|:---|:---|
| Dated as of: | |
|  | DUKE ENERGY INDIANA, LLC |
|  | By |
|  | __________________________President |
| ATTEST: | |
| __________________________Secretary | |

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(FORM OF REVERSE OF BOND OF Series AAAA)

This bond is one of the bonds of the Company issued and to be issued from time to time under and in accordance with and all secured by an indenture of mortgage or deed of trust, dated September 1, 1939, from Public Service Company of Indiana (predecessor of the Company) to The First National Bank of Chicago, as Trustee, to which Deutsche Bank National Trust Company is successor trustee (which indenture as amended by all supplemental indentures is hereinafter referred to as the "Indenture"). Said Trustee or its successor in trust under the Indenture is hereinafter sometimes referred to as the "Trustee." Reference is hereby made to the Indenture for a description of the property mortgaged and pledged and the nature and extent of the security for said bonds. By the terms of the Indenture, the bonds secured thereby are issuable in series which may vary as to date, amount, dates of maturity, rate of interest and in other respects as in the Indenture provided.

The rights and obligations of the Company and of the bearers and registered owners of bonds may be modified or amended with the consent of the Company by an affirmative vote of the bearers or registered owners entitled to vote of at least seventy-five per centum (75%) in principal amount of the bonds then outstanding at a meeting of bondholders called for the purpose (and by an affirmative vote of the bearers or registered owners entitled to vote of at least seventy-five per centum (75%) in principal amount of bonds of any series affected by such modification or amendment in case one or more, but less than all, series of bonds are so affected), all in the manner and subject to the limitations set forth in the Indenture, any consent by the bearer or registered owner of any bond being conclusive and binding upon such bearer or registered owner and upon all future bearers or registered owners of such bond, irrespective of whether or not any notation of such consent is made on such bond; provided that no such modification or amendment shall, among other things, extend the maturity or reduce the amount of, or reduce the rate of interest on, or otherwise modify the terms of the payment of the principal of, or interest or premium (if any) on this bond, which obligations are absolute and unconditional, or permit the creation of any lien ranking prior to or equal with the lien of the Indenture on any of the mortgaged property. The Seventy-First Supplemental Indenture provides that at any time when no bonds issued under the Indenture prior to the issuance of the "PSI Energy, Inc. First Mortgage Bonds, Series BBB, 8%, Due July 15, 2009" are outstanding, the Company reserves the right to amend the Indenture, without the consent or other action by the holders of the bonds outstanding at that time, to decrease the seventy-five per centum (75%) vote requirement referred to above to sixty-six and two-thirds per centum (66-2/3%).

Prior to October 1, 2052 (the "Par Call Date"), the Company may redeem at its option the Bonds of Series AAAA, in whole or in part, at any time and from time to time, at a redemption price (expressed as a percentage of principal amount and rounded to three decimal places) equal to the greater of: (a) the sum of the present values of the remaining scheduled payments of principal and interest thereon discounted to the redemption date (assuming the Bonds of Series AAAA matured on the Par Call Date) on a semi-annual basis (assuming a 360-day year consisting of twelve 30-day months) at the Treasury Rate applicable to the Bonds of Series AAAA plus 30 basis points less (b) interest accrued to the redemption date; and 100% of the principal amount of the Bonds of Series AAAA to be redeemed, plus, in either case, accrued and unpaid interest thereon to, but excluding, the redemption date. The Company shall notify the Trustee of the redemption price with respect to any redemption pursuant to this paragraph promptly after the calculation thereof. The Trustee shall not be responsible for calculating said redemption price.

On or after the Par Call Date, the Company may redeem at its option the Bonds of Series AAAA, in whole or in part, at any time and from time to time, at a redemption price equal to 100% of the principal amount of the Bonds of Series AAAA to be redeemed plus accrued and unpaid interest thereon to, but excluding, the redemption date.

"Business day" means any day other than a day on which banks in New York City are required or authorized to be closed.

"Treasury Rate" means, with respect to any redemption date, the yield determined by the Company in accordance with the following two paragraphs.

The Treasury Rate shall be determined by the Company after 4:15 p.m., New York City time (or after such time as yields on U.S. government securities are posted daily by the Board of Governors of the Federal Reserve System), on the third business day preceding the redemption date based upon the yield or yields for the most recent day that appear after such time on such day in the most recent statistical release published by the Board of Governors of the Federal Reserve System designated as "Selected Interest Rates (Daily)—H.15" (or any successor designation or publication) ("H.15") under the caption "U.S. government securities—Treasury constant maturities — Nominal" (or any successor caption or heading) ("H.15 TCM"). In determining the Treasury Rate, the Company shall select, as applicable:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;· the yield for the Treasury constant maturity on H.15 exactly equal to the period from the redemption date to the Par Call Date (the
 "Remaining Life"); or

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;· if there is no such Treasury constant maturity on H.15 exactly equal to the Remaining Life, the two yields—one yield corresponding
to the Treasury constant maturity on H.15 immediately shorter than and one yield corresponding to the Treasury constant maturity on H.15
immediately longer than such Remaining Life—and shall interpolate to the Par Call Date on a straight-line basis (using the actual
number of days) using such yields and rounding the result to three decimal places; or

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;· if there is no such Treasury constant maturity on H.15 shorter than or longer than the Remaining Life, the yield for the single Treasury
constant maturity on H.15 closest to such Remaining Life. For purposes of this clause, the applicable Treasury constant maturity or maturities
on H.15 shall be deemed to have a maturity date equal to the relevant number of months or years, as applicable, of such Treasury constant
maturity from the redemption date.

If on the third business day preceding the redemption date H.15 TCM is no longer published, the Company shall calculate the Treasury Rate based on the rate per annum equal to the semi-annual equivalent yield to maturity at 11:00 a.m., New York City time, on the second business day preceding such redemption date of the United States Treasury security maturing on, or with a maturity that is closest to, the Par Call Date. If there is no United States Treasury security maturing on the Par Call Date but there are two or more United States Treasury securities with a maturity date equally distant from the Par Call Date, one with a maturity date preceding the Par Call Date and one with a maturity date following the Par Call Date, the Company shall select the United States Treasury security with a maturity date preceding the Par Call Date. If there are two or more United States Treasury securities maturing on the Par Call Date or two or more United States Treasury securities meeting the criteria of the preceding sentence, the Company shall select from among these two or more United States Treasury securities the United States Treasury security that is trading closest to par based upon the average of the bid and asked prices for such United States Treasury securities at 11:00 a.m., New York City time. In determining the Treasury Rate in accordance with the terms of this paragraph, the semi-annual yield to maturity of the applicable United States Treasury security shall be based upon the average of the bid and asked prices (expressed as a percentage of principal amount) at 11:00 a.m., New York City time, of such United States Treasury security, and rounded to three decimal places.

The Company's actions and determinations in determining the redemption price shall be conclusive and binding for all purposes, absent manifest error.

The Trustee shall have no obligation or duty whatsoever to determine, or to verify the Company's calculations of, the redemption price.

Notice of any redemption by the Company will be mailed at least 30 days but not more than 60 days before any redemption date to each holder of Bonds of Series AAAA to be redeemed. If less than all the Bonds of Series AAAA are to be redeemed at the option of the Company, and if the Bonds of Series AAAA are not Global Securities, the Bonds of Series AAAA will be redeemed by lot.

Unless the Company defaults in payment of the redemption price, on and after any redemption date, interest will cease to accrue on the Bonds of Series AAAA or portions thereof called for redemption.

In the case of any of certain events of default specified in the Indenture, the principal of this bond may be declared or may become due and payable prior to the stated date of maturity hereof in the manner and with the effect provided in the Indenture.

No recourse shall be had for the payment of the principal of or interest on this bond, or for any claim based hereon, or otherwise in respect hereof or of the Indenture, to or against any incorporator, shareholder, officer or director, past, present or future, of the Company or of any predecessor or successor company, either directly or through the Company or such predecessor or successor company, under any constitution or statute or rule of law, or by the enforcement of any assessment or penalty, or otherwise, all such liability of incorporators, shareholders, directors and officers being waived and released by the registered owner hereof by the acceptance of this bond and being likewise waived and released by the terms of the Indenture.

The Bonds of Series AAAA are issuable only in registered form without coupons. This bond is transferable by the registered owner hereof, in person or by an attorney duly authorized, at the principal office or place of business of Deutsche Bank Trust National Company, the Trustee, or its successor in trust under the Indenture, or, if the Bonds of Series AAAA are not Global Securities, at the option of the registered owner, at the office or agency of the Company in the Borough of Manhattan, The City of New York, State of New York, upon the surrender and cancellation of this bond, and upon any such transfer a new registered bond or bonds of the same series and maturity date and for the same aggregate principal amount will be issued to the transferee in exchange herefor.

The Bonds of Series AAAA are issuable in denominations of $2,000 and integral multiples of $1,000 in excess thereof as shall from time to time be determined and authorized by the Board of Directors of the Company. In the manner and subject to the limitations provided in the Indenture, Bonds of Series AAAA are exchangeable as between authorized denominations, upon presentation thereof for such purpose by the registered owner, at the principal office or place of business of Deutsche Bank National Trust Company, the Trustee, or its successor in trust under the Indenture, or, at the option of the registered owner, at the office or agency of the Company in the Borough of Manhattan, The City of New York, State of New York.

No service charge will be made for any transfer or exchange of this bond, but the Company may require a sum sufficient to cover any tax or other governmental charge payable in connection therewith.

(FORM OF TRUSTEE'S CERTIFICATE)

TRUSTEE'S CERTIFICATE

This bond is one of the Bonds of Series AAAA designated therein referred to and described in the within mentioned Indenture and Seventy-First Supplemental Indenture.

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| |
|:---|
| DEUTSCHE BANK NATIONAL TRUST COMPANY, AS TRUSTEE |
| By |
| Authorized Officer |

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[THE REMAINDER OF THIS PAGE HAS BEEN LEFT BLANK INTENTIONALLY.]

*Section 3.* The Bond of Series AAAA issued prior to the first interest payment date shall be dated as of March 23, 2023, and otherwise shall be dated as provided in Section 1 of Article II of the Indenture.

*Section 4.* All Bonds of Series AAAA shall be due and payable on April 1, 2053, and shall bear interest from the date thereof at the rate of 5.40% per annum, payable semi-annually on the first day of April and October in each year, commencing on October 1, 2023, to each holder of record at the close of business on the record date for the applicable interest payment date, which will be (i) the close of business on the Business Day immediately preceding such interest payment date so long as all of the Bonds of Series AAAA remain in book-entry only form or (ii) the close of business on the fifteenth calendar day immediately preceding such interest payment date if any of the Bonds of Series AAAA do not remain in book-entry only form, in each case, until the principal amount of the Bonds of Series AAAA has been paid or made available for payment. Interest on the Bonds of Series AAAA shall be computed on the basis of a 360-day year consisting of twelve 30-day months.

*Section 5.* Subject to agreements with or the rules of the Depository or any successor book-entry security system or similar system with respect to Global Securities, both the principal of and the interest on the Bonds of Series AAAA shall be payable in any coin or currency of the United States of America which at the time of payment is legal tender for the payment of public and private debts, at the office or agency of the Company in Plainfield, Indiana, or, at the option of the holder thereof, at the office or agency of the Company in the Borough of Manhattan, The City of New York, State of New York, except that interest on the Bonds of Series AAAA may be paid, at the option of the Company, by check or draft mailed to the address of the person entitled thereto as it appears on the books of the Company maintained for that purpose.

*Section 6.* Definitive Bonds of Series AAAA shall be issuable in denominations of $2,000 and integral multiples of $1,000 in excess thereof, numbered consecutively from "AAAA-R-1" upward.

The Bonds of Series AAAA shall be executed on behalf of the Company by the manual or facsimile signature of its President or an Executive Vice President or one of its Vice Presidents and shall have affixed thereto the seal of the Company or a facsimile thereof attested by the manual or facsimile signature of its Secretary or one of its Assistant Secretaries and shall be authenticated by the execution by the Trustee of the certificate endorsed on said bonds.

No service charge will be made by the Company for the transfer or for the exchange of Bonds of Series AAAA except, in the case of transfer, a charge sufficient to reimburse the Company for any tax or other governmental charge payable in connection therewith.

Pursuant to the provisions of Section 11 of Article II of the Indenture, the Bonds of Series AAAA may be issued in temporary form, and if temporary bonds be issued, the Company shall, with all reasonable dispatch, at its own expense and without charge to the holders of the temporary bonds, prepare and execute definitive Bonds of Series AAAA and exchange the temporary bonds for such definitive bonds in the manner provided for in said section, provided, however, no presentation or surrender of temporary Bonds of Series AAAA shall be necessary in order for the holders entitled to interest thereon to receive such interest.

*Section 7.* Article IX of the Indenture, "Maintenance and Renewal Fund and Sinking Fund Provisions", as heretofore amended or supplemented shall not apply to the "PSI Energy, Inc. First Mortgage Bonds, Series BBB, 8%, Due July 15, 2009" (such bonds being hereinafter referred to as the "Bonds of Series BBB") or to any subsequently created series of bonds (which includes the Bonds of Series AAAA) from and after the date on which no series of bonds created under the Indenture prior to the Bonds of Series BBB are outstanding.

*Section 8.* Section 22 of Article V of the Indenture as heretofore amended or supplemented which, among other things, requires an inspection of the mortgaged property every two years by an independent engineer, shall not apply to the Bonds of Series BBB or to any subsequently created series of bonds (which includes the Bonds of Series AAAA), from and after the date on which no series of bonds created under the Indenture prior to the Bonds of Series BBB are outstanding.

*Section 9.* The Company reserves the right, without consent or other action by the holders of the Bonds of Series BBB or of any subsequently created series of bonds (which includes the Bonds of Series AAAA), to amend the Indenture, as heretofore amended or supplemented, at any time after all bonds of any series created prior to the Bonds of Series BBB are no longer outstanding under the Indenture, as follows:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(a) by substituting for the words "in principal amount not greater than sixty per centum (60%) of" in Section 3 of Article IV thereof the following:

"in principal amount not greater than sixty-six and two-thirds per centum (66-2/3%) of".

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(b) by substituting for the words "shall exceed sixty per centum (60%) of the value of bondable property so acquired" in Section 9 of Article V thereof the following:

"shall exceed sixty-six and two-thirds per centum (66-2/3%) of the value of bondable property so acquired".

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(c) by substituting for the words "shall be deemed to be paid within the meaning of this article; *provided,* that the date for the payment or redemption of such bonds shall be not more than one (1) year after such moneys shall have been so set apart or paid." in the first paragraph of Article XIV thereof the following:

"shall be deemed to be paid within the meaning of this article.".

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(d) by substituting for the words "with the consent of holders of at least seventy-five per centum (75%) in aggregate principal amount of the bonds at the time outstanding;" in sub-section (a) of Section 3 of Article XVIII thereof the following:

"with the consent of holders of at least sixty-six and two-thirds per centum (66-2/3%) in aggregate principal amount of the bonds at the time outstanding;".

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(e) by substituting for the words "holders (or persons entitled to vote the bonds) of not less than seventy-five per centum (75%) in aggregate principal amount of the bonds entitled to be voted" in subsection (l) of Section 3 of Article XVIII thereof the following:

"holders (or persons entitled to vote the bonds) of not less than sixty-six and two-thirds per centum (66-2/3%) in aggregate principal amount of the bonds entitled to be voted".

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(f) by substituting for the words "holders (or persons entitled to vote the bonds) of at least seventy-five per centum (75%) in principal amount of the bonds outstanding" in sub-section (m) of Section 3 of Article XVIII thereof the following:

"holders (or persons entitled to vote the bonds) of at least sixty-six and two-thirds per centum (66-2/3%) in principal amount of the bonds outstanding".

*Section 10.* The Bonds shall not be entitled to the benefit of a sinking fund.

ARTICLE II.

ISSUANCE OF BONDS OF Series AAAA.

*Section 1.* An initial issue of the Bonds of Series AAAA, in the aggregate principal amount not exceeding five hundred million dollars ($500,000,000) may be executed by the Company and delivered to the Trustee for authentication, and shall be authenticated and delivered by the Trustee to or upon the order of the Company (which authentication and delivery may be made without awaiting the filing or recording of this Seventy-First Supplemental Indenture), upon receipt by the Trustee of the resolutions, certificates, orders, opinions and other instruments required by the provisions of Section 3 of Article IV of the Indenture to be received by the Trustee as a condition to the authentication and delivery by the Trustee of bonds pursuant to said Section 3.

*Section 2.* Subject to the limitations provided in Section 24 of Article V of the Indenture, additional Bonds of Series AAAA may be issued by the Company under the provisions of Sections 2, 3 or 4 of Article IV of the Indenture.

ARTICLE III.

INDENTURE AMENDMENTS.

*Section 1.* Article I of the Indenture, as heretofore amended, is hereby further amended (i) by adding immediately after subdivision "(107)" thereof an additional subdivision numbered "(108)" and reading as follows:

and (ii) by changing the numbering of the present subdivision "(108)" thereof to "(109)".

*Section 2.* Article VII of the Indenture, as heretofore amended, is hereby further amended by inserting therein immediately after Section 53 thereof, a new section designated "Section 54" and reading as follows:

"Section 54. Prior to October 1, 2052 (the "Par Call Date"), the Company may redeem at its option the Bonds of Series AAAA, in whole or in part, at any time and from time to time, at a redemption price (expressed as a percentage of principal amount and rounded to three decimal places) equal to the greater of: (a) the sum of the present values of the remaining scheduled payments of principal and interest thereon discounted to the redemption date (assuming the Bonds of Series AAAA matured on the Par Call Date) on a semi-annual basis (assuming a 360-day year consisting of twelve 30-day months) at the Treasury Rate applicable to the Bonds of Series AAAA plus 30 basis points less (b) interest accrued to the redemption date; and 100% of the principal amount of the Bonds of Series AAAA to be redeemed, plus, in either case, accrued and unpaid interest thereon to, but excluding, the redemption date. The Company shall notify the Trustee of the redemption price with respect to any redemption pursuant to this paragraph promptly after the calculation thereof. The Trustee shall not be responsible for calculating said redemption price.

On or after the Par Call Date, the Company may redeem at its option the Bonds of Series AAAA, in whole or in part, at any time and from time to time, at a redemption price equal to 100% of the principal amount of the Bonds of Series AAAA to be redeemed plus accrued and unpaid interest thereon to, but excluding, the redemption date.

"Business day" means any day other than a day on which banks in New York City are required or authorized to be closed.

"Treasury Rate" means, with respect to any redemption date, the yield determined by the Company in accordance with the following two paragraphs.

The Treasury Rate shall be determined by the Company after 4:15 p.m., New York City time (or after such time as yields on U.S. government securities are posted daily by the Board of Governors of the Federal Reserve System), on the third business day preceding the redemption date based upon the yield or yields for the most recent day that appear after such time on such day in the most recent statistical release published by the Board of Governors of the Federal Reserve System designated as "Selected Interest Rates (Daily)—H.15" (or any successor designation or publication) ("H.15") under the caption "U.S. government securities—Treasury constant maturities — Nominal" (or any successor caption or heading) ("H.15 TCM"). In determining the Treasury Rate, the Company shall select, as applicable:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;· the yield for the Treasury constant maturity on H.15 exactly equal to the period from the redemption date to the Par Call Date (the
 "Remaining Life"); or

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;· if there is no such Treasury constant maturity on H.15 exactly equal to the Remaining Life, the two yields—one yield corresponding
to the Treasury constant maturity on H.15 immediately shorter than and one yield corresponding to the Treasury constant maturity on H.15
immediately longer than such Remaining Life—and shall interpolate to the Par Call Date on a straight-line basis (using the actual
number of days) using such yields and rounding the result to three decimal places; or

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;· if there is no such Treasury constant maturity on H.15 shorter than or longer than the Remaining Life, the yield for the single Treasury
constant maturity on H.15 closest to such Remaining Life. For purposes of this clause, the applicable Treasury constant maturity or maturities
on H.15 shall be deemed to have a maturity date equal to the relevant number of months or years, as applicable, of such Treasury constant
maturity from the redemption date.

If on the third business day preceding the redemption date H.15 TCM is no longer published, the Company shall calculate the Treasury Rate based on the rate per annum equal to the semi-annual equivalent yield to maturity at 11:00 a.m., New York City time, on the second business day preceding such redemption date of the United States Treasury security maturing on, or with a maturity that is closest to, the Par Call Date. If there is no United States Treasury security maturing on the Par Call Date but there are two or more United States Treasury securities with a maturity date equally distant from the Par Call Date, one with a maturity date preceding the Par Call Date and one with a maturity date following the Par Call Date, the Company shall select the United States Treasury security with a maturity date preceding the Par Call Date. If there are two or more United States Treasury securities maturing on the Par Call Date or two or more United States Treasury securities meeting the criteria of the preceding sentence, the Company shall select from among these two or more United States Treasury securities the United States Treasury security that is trading closest to par based upon the average of the bid and asked prices for such United States Treasury securities at 11:00 a.m., New York City time. In determining the Treasury Rate in accordance with the terms of this paragraph, the semi-annual yield to maturity of the applicable United States Treasury security shall be based upon the average of the bid and asked prices (expressed as a percentage of principal amount) at 11:00 a.m., New York City time, of such United States Treasury security, and rounded to three decimal places.

The Company's actions and determinations in determining the redemption price shall be conclusive and binding for all purposes, absent manifest error.

The Trustee shall have no obligation or duty whatsoever to determine, or to verify the Company's calculations of, the redemption price.

Notice of any redemption by the Company will be mailed at least 30 days but not more than 60 days before any redemption date to each holder of Bonds of Series AAAA to be redeemed. If less than all the Bonds of Series AAAA are to be redeemed at the option of the Company, and if the Bonds of Series AAAA are not Global Securities, the Bonds of Series AAAA will be redeemed by lot.

Unless the Company defaults in payment of the redemption price, on and after any redemption date, interest will cease to accrue on the Bonds of Series AAAA or portions thereof called for redemption.

The Company shall indemnify and hold harmless the Trustee from any and all losses, costs, damages, expenses, fees (including attorneys' fees), court costs, judgments, penalties, obligations, suits, disbursements and liabilities of any kind or character whatsoever which may at any time be imposed upon, incurred by or asserted against the Trustee by reason of or arising out of or caused, directly or indirectly by any act or omission of the Trustee with respect to this Section 54, except for such that would arise out of the willful misconduct or gross negligence of the Trustee and except for costs and expenses arising in the ordinary course of the Trustee's business."

ARTICLE IV.

CONCERNING THE TRUSTEE.

The Trustee hereby accepts the trusts hereby declared and agrees to perform the same upon the terms and conditions in the Indenture and in this Seventy-First Supplemental Indenture set forth. The Trustee shall not be responsible in any manner whatsoever for or in respect of the validity or sufficiency of this Seventy-First Supplemental Indenture or the due execution hereof by the Company or for or in respect of the recitals contained herein, all of which recitals are made by the Company solely. In general, each and every term and condition contained in Article XVII of the Indenture shall apply to this Seventy-First Supplemental Indenture.

ARTICLE V.

MISCELLANEOUS PROVISIONS.

*Section 1.* Wherever in the original Indenture or in any of the seventy-one supplemental indentures thereto reference is made to any article or section of the original Indenture, such reference shall be deemed to refer to such article or section as amended by such supplemental indentures.

*Section 2.* Upon the execution and delivery hereof, the Indenture shall thereupon be deemed to be amended as hereinabove set forth as fully and with the same effect as if the amendments made hereby were set forth in the original Indenture and each of the seventy-one supplemental indentures to the Indenture shall henceforth be read, taken and construed as one and the same instrument; but such amendments shall not operate so as to render invalid or improper any action heretofore taken under the original Indenture or said supplemental indentures.

*Section 3.* All the covenants, stipulations and agreements in this Seventy-First Supplemental Indenture contained are and shall be for the sole and exclusive benefit of the parties hereto, their successors and assigns, and of the holders from time to time of the bonds.

*Section 4.* The table of contents to, and the headings of the different articles of, this Seventy-First Supplemental Indenture are inserted for convenience of reference, and are not to be taken to be any part of the provisions hereof, nor to control or affect the meaning, construction or effect of the same.

*Section 5.* This Seventy-First Supplemental Indenture may be simultaneously executed in any number of counterparts, and all such counterparts shall constitute but one and the same instrument. The words "execution," signed," signature," and words of like import in this Seventy-First Supplemental Indenture shall include images of manually executed signatures transmitted by facsimile, email or other electronic format (including, without limitation, "pdf," "tif" or "jpg") and other electronic signatures (including without limitation, DocuSign and AdobeSign). The use of electronic signatures and electronic records (including, without limitation, any contract or other record created, generated, sent, communicated, received, or stored by electronic means) shall be of the same legal effect, validity and enforceability as a manually executed signature or use of a paper-based record-keeping system to the fullest extent permitted by applicable law, including the Federal Electronic Signatures in Global and National Commerce Act, the New York State Electronic Signatures and Records Act and any other applicable law, including, without limitation, any state law based on the Uniform Electronic Transactions Act or the Uniform Commercial Code. Without limitation to the foregoing, and anything in the Indenture to the contrary notwithstanding, (a) any officer's certificate, order of the company or request of the company, opinion of counsel, bonds, Global Securities or Securities, certificate of authentication appearing on or attached to any Global Security or any Securities or other certificate, instrument, agreement or other document delivered pursuant to the Indenture may be executed, attested and transmitted by any of the foregoing electronic means and formats, (b) all references in this Section 5 or elsewhere in this Seventy-First Supplemental Indenture to the execution, attestation or authentication of any Securities or any certificate of authentication appearing on or attached to any bond, Global Security or any Securities by means of a manual or facsimile signature shall be deemed to include signatures that are made or transmitted by any of the foregoing electronic means or formats, and (c) any requirement in this Section 5 or elsewhere in this Seventy-First Supplemental Indenture that any signature be made under a corporate seal (or facsimile thereof) shall not be applicable to the Global Security or Securities.

*Section 6.* Whenever a payment of principal or interest in respect of the Bonds of Series AAAA are due on any day other than a Business Day (as hereinafter defined), such payment shall be payable on the first Business Day next following such date, and, in the case of a principal payment, interest on such principal payment shall accrue to the date of such principal payment. For the purposes of this Section 6 the term Business Day shall mean any day other than a day on which the Trustee is authorized by law to close.

[THE REMAINDER OF THIS PAGE HAS BEEN LEFT BLANK INTENTIONALLY.]

IN WITNESS WHEREOF, said Duke Energy Indiana, LLC has caused this instrument to be executed in its limited liability company name by its President or one of its Vice Presidents and to be attested by its Secretary or one of its Assistant Secretaries and said Deutsche Bank National Trust Company has caused this instrument to be executed in its corporate name by, and to be attested by, its authorized officers, in several counterparts, all as of the day and year first above written.

---

| | | |
|:---|:---|:---|
|  | DUKE ENERGY INDIANA, LLC | DUKE ENERGY INDIANA, LLC |
| (COMPANY SEAL) | By | /s/ Karl W. Newlin |
|  |  | Karl W. Newlin |
|  |  | Senior Vice President, Corporate Development and Treasurer |
| ATTEST: | | |
| /s/ Robert T. Lucas III | | |
| Robert T. Lucas III | | |
| Assistant Secretary | | |

---

[COMPANY'S SIGNATURE PAGE TO SEVENTY-FIRST SUPPLEMENTAL INDENTURE]

---

| | | |
|:---|:---|:---|
|  | DEUTSCHE BANK NATIONAL TRUST COMPANY, <br> as Trustee and not in its individual capacity | DEUTSCHE BANK NATIONAL TRUST COMPANY, <br> as Trustee and not in its individual capacity |
| (CORPORATE SEAL) | By | /s/ Irina Golovashchuk |
|  |  | Name: Irina Golovashchuk |
|  |  | Title: Vice President |
|  | By | /s/ Kenneth R. Ring |
|  |  | Name: Kenneth R. Ring |
|  |  | Title: Director |
| ATTEST: | | |
| /s/ Annie V. Jaghatspanyan | | |
| &nbsp;&nbsp;&nbsp;Name: Annie V. Jaghatspanyan | | |
| &nbsp;&nbsp;&nbsp;Title: Vice President | | |

---

[TRUSTEE'S SIGNATURE PAGE TO SEVENTY-FIRST SUPPLEMENTAL INDENTURE]

---

| |
|:---|
| STATE OF NORTH CAROLINA |
| COUNTY OF MECKLENBURG |

---

BE IT REMEMBERED, that on this 22nd day of March, 2023, before me, the undersigned, a notary public in and for the County and State aforesaid, duly commissioned and qualified, personally appeared Karl W. Newlin and Robert T. Lucas III, personally known to me to be the same persons whose names are subscribed to the foregoing instrument, and personally known to me to be the Senior Vice President, Corporate Development and Treasurer and an Assistant Secretary, respectively, of Duke Energy Indiana, LLC, an Indiana limited liability company, and acknowledged that they signed and delivered said instrument as their free and voluntary act as such Senior Vice President, Corporate Development and Treasurer and Assistant Secretary, respectively, and as the free and voluntary act of said Duke Energy Indiana, LLC, for the uses and purposes therein set forth; in pursuance of the power and authority granted to them by resolution of the Board of Directors of said Company.

IN WITNESS WHEREOF, I have hereunto set my hand and affixed my notarial seal the day and year aforesaid.

---

| | |
|:---|:---|
| (NOTARIAL SEAL) |  |
|  | /s/ Jenny Pattana |
|  | Jenny Pattana, Notary Public |
|  | Commission expires: <u>June 8, 2025</u> |

---

STATE OF NEW YORK) ) ss: <br> COUNTY OF NEW YORK)

BE IT REMEMBERED, that on this 23rd day of March, 2023, before me, the undersigned, a notary public in and for the County and State aforesaid, duly commissioned and qualified, personally appeared Irina Golovashchuk and Kenneth R. Ring personally known to me to be the same persons whose names are subscribed to the foregoing instrument, and personally known to me to be a Vice President and a Director, respectively, of Deutsche Bank National Trust Company, a national banking association, and acknowledged that they signed and delivered said instrument as their free and voluntary act as such Vice President and Director, respectively, and as the free and voluntary act of said Deutsche Bank National Trust Company, for the uses and purposes therein set forth; in pursuance of the power and authority granted to them by the bylaws of said association.

IN WITNESS WHEREOF, I have hereunto set my hand and affixed my notarial seal the day and year aforesaid.

---

| |
|:---|
| (NOTARIAL SEAL) |
| /s/ Robert S. Peschler |
| Robert S. Peschler <br> Notary Public, State of New York<br> Qualified in New York County<br> My Commission expires: 09/3/2023<br> No. 01PE6397303 |
| This instrument was prepared by: |
| Brendan P. Harney, Esq.\* |
| Hunton Andrews Kurth LLP |
| 200 Park Avenue |
| New York, New York 10166 |
| __________________ |
| \*Admitted in New York; not admitted in Indiana |

---

## Exhibit 5.1

**Exhibit 5.1**

**DUKE ENERGY BUSINESS SERVICES, LLC**

526 South Church Street

Charlotte, North Carolina 28202

March 23, 2023

Duke Energy Indiana, LLC

1000 East Main Street

Plainfield, Indiana 46168

Re: Duke Energy Indiana, LLC $500,000,000 aggregate principal amount of First Mortgage Bonds, Series AAAA, 5.40%, Due April 1, 2053

Ladies and Gentlemen:

I am Deputy General Counsel of Duke Energy Business Services LLC, the service company affiliate of Duke Energy Indiana, LLC, an Indiana limited liability company (the "Company"), and in such capacity I have acted as counsel to the Company in connection with the public offering of $500,000,000 aggregate principal amount of the Company's First Mortgage Bonds, Series AAAA, 5.40%, Due April 1, 2053 (the "Securities"), to be issued pursuant to an Indenture of Mortgage or Deed of Trust, dated September 1, 1939 (the "Original Indenture"), between the Company and Deutsche Bank National Trust Company, as Trustee (the "Trustee"), as amended and supplemented from time to time, including by the Seventy-First Supplemental Indenture, dated as of March 23, 2023, relating to the Securities (the "Supplemental Indenture") (collectively, the "Indenture"). On March 21, 2023, the Company entered into an Underwriting Agreement (the "Underwriting Agreement") with BofA Securities, Inc., Citigroup Global Markets Inc., SMBC Nikko Securities America, Inc., TD Securities (USA) LLC and Truist Securities, Inc., 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 of 1933, as amended (the "Securities Act").

My opinion set forth herein is limited to the laws of the State of Indiana. I do not express any opinion with respect to the laws of any other jurisdiction, or as to the effect thereof on the opinion herein stated. The Indenture and the form of Securities do not include provisions specifying the governing law. For purposes of my opinions, I have assumed that the Indenture and the Securities are governed exclusively by the internal substantive laws and judicial interpretations of the State of Indiana. In rendering the opinion set forth herein, with respect to matters of Indiana law, I have relied on the opinion of Elizabeth Heneghan, Esq., Deputy General Counsel of Duke Energy Business Services LLC, the service company affiliate of the Company, attached hereto as Annex I.

In connection with this opinion, I or attorneys under my supervision (with whom I have consulted) have examined and are familiar with originals or copies, certified or otherwise identified to our satisfaction, of:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(a) the registration statement on Form S-3 (File No. 333-267583-04) of the Company filed on September 23, 2022, with the Securities and Exchange Commission (the "Commission") under 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, effective upon filing with the Commission on September 23, 2022 pursuant to Rule 462(e) of the Rules and Regulations, being hereinafter referred to as the "Registration Statement");

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(b) the prospectus, dated September 23, 2022, which forms a part of and is included in the Registration Statement in the form filed with the Commission pursuant to Rule 424(b) of the Rules and Regulations;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(c) the preliminary prospectus supplement, dated March 21, 2023, relating to the offering of the Securities in the form filed with the Commission pursuant to Rule 424(b) of the Rules and Regulations;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(d) the prospectus supplement, dated March 21, 2023, relating to the offering of the Securities in the form filed with the Commission pursuant to Rule 424(b) of the Rules and Regulations;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(e) the Issuer Free Writing Prospectus filed with the Commission on March 21, 2023 pursuant to Rule 433(d) of the Securities Act and Section 5(e) of the Underwriting Agreement;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(f) the Articles of Organization of the Company, effective January 1, 2016, as amended;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(g) the Amended and Restated Limited Liability Company Operating Agreement of the Company, dated as of August 25, 2021, as amended;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(h) an executed copy of the Underwriting Agreement;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(i) a specimen of the Securities;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(j) an executed copy of the Indenture;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(k) an executed copy of the Supplemental Indenture;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(l) resolutions adopted by the Board of Directors of the Company, effective June 8, 2022, relating to the preparation and filing with the Commission of the Registration Statement and the issuance of the Company's securities; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(m) the written consent of Assistant Treasurer, Chris R. Bauer, effective March 21, 2023, relating to the offering of the Securities.

I or attorneys under my supervision (with whom I have consulted) have also examined originals or copies, certified or otherwise identified to our satisfaction, of such records of the Company and such agreements and certificates and receipts of public officials, certificates of officers or other representatives of the Company and others, and such other documents, certificates and records 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 or photostatic copies, and the authenticity of such copies. In making my examination of executed documents, I have assumed that the parties thereto, other than the Company, had the power, limited liability company or other, to enter into and perform all obligations thereunder and I have also assumed the due authorization by all requisite action, limited liability company or other, and the execution and delivery by such parties of such documents and, except to the extent expressly set forth below, the validity and binding effect thereof on such parties. As to any facts material to the opinions expressed herein which were not independently established or verified, I or attorneys under my supervision (with whom I have consulted) have relied upon oral or written statements and representations of officers and other representatives of the Company and others.

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

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

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(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.

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 therefor in accordance with the terms of the Underwriting Agreement and the Indenture, the Securities will constitute valid and binding obligations of the Company entitled to the benefits of the Indenture and enforceable against the Company in accordance with their terms.

I hereby consent to the filing of this opinion with the Commission as an exhibit to the Registration Statement through incorporation by reference of a current report on Form 8-K. I also consent to the reference to my name under the heading "Legal Matters" in the Prospectus Supplement. In giving this consent, I do not thereby admit that I am in the category of persons whose consent is required under Section 7 of the Securities 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 |
| Robert T. Lucas III |

---

Annex I

**DUKE ENERGY BUSINESS SERVICES, LLC**

526 South Church Street

Charlotte, North Carolina 28202

March 23, 2023

Robert T. Lucas III, Esq.

526 South Church Street

Charlotte, North Carolina 28202

Re: Duke Energy Indiana, LLC $500,000,000 aggregate principal amount of First Mortgage Bonds, Series AAAA, 5.40%, Due April 1, 2053

Dear Mr. Lucas:

I am Deputy General Counsel of Duke Energy Business Services LLC, the service company affiliate of Duke Energy Indiana, LLC, an Indiana limited liability company (the "Company"), and in such capacity I have acted as counsel to the Company in connection with the public offering of $500,000,000 aggregate principal amount of the Company's First Mortgage Bonds, Series AAAA, 5.40%, Due April 1, 2053 (the "Securities"), to be issued pursuant to an Indenture of Mortgage or Deed of Trust, dated September 1, 1939 (the "Original Indenture"), between the Company and Deutsche Bank National Trust Company, as Trustee (the "Trustee"), as amended and supplemented from time to time, including by the Seventy-First Supplemental Indenture, dated as of March 23, 2023, relating to the Securities (the "Supplemental Indenture") (collectively, the "Indenture"). On March 21, 2023, the Company entered into an Underwriting Agreement (the "Underwriting Agreement") with BofA Securities, Inc., Citigroup Global Markets Inc., SMBC Nikko Securities America, Inc., TD Securities (USA) LLC and Truist Securities, Inc., 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 of 1933, as amended (the "Securities Act").

I am a member of the bar of the State of Indiana and my opinion set forth herein is limited to the laws of the State of Indiana. I do not express any opinion with respect to the laws of any other jurisdiction, or as to the effect thereof on the opinion herein stated. The Indenture and the form of Securities do not include provisions specifying the governing law. For purposes of my opinions, I have assumed that the Indenture and the Securities are governed exclusively by the internal substantive laws and judicial interpretations of the State of Indiana.

In connection with this opinion, I or attorneys under my supervision (with whom I have consulted) have examined and are familiar with originals or copies, certified or otherwise identified to our satisfaction, of:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(a) the registration statement on Form S-3 (File No. 333-267583-04) of the Company filed on September 23, 2022, with the Securities and Exchange Commission (the "Commission") under 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, effective upon filing with the Commission on September 23, 2022 pursuant to Rule 462(e) of the Rules and Regulations, being hereinafter referred to as the "Registration Statement");

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(b) the prospectus, dated September 23, 2022, which forms a part of and is included in the Registration Statement in the form filed with the Commission pursuant to Rule 424(b) of the Rules and Regulations;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(c) the preliminary prospectus supplement, dated March 21, 2023, relating to the offering of the Securities in the form filed with the Commission pursuant to Rule 424(b) of the Rules and Regulations;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(d) the prospectus supplement, dated March 21, 2023, relating to the offering of the Securities in the form filed with the Commission pursuant to Rule 424(b) of the Rules and Regulations;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(e) the Issuer Free Writing Prospectus filed with the Commission on March 21, 2023 pursuant to Rule 433(d) of the Securities Act and Section 5(e) of the Underwriting Agreement;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(f) the Articles of Organization of the Company, effective January 1, 2016, as amended;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(g) the Amended and Restated Limited Liability Company Operating Agreement of the Company, dated as of August 25, 2021, as amended;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(h) an executed copy of the Underwriting Agreement;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(i) a specimen of the Securities;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(j) an executed copy of the Indenture;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(k) an executed copy of the Supplemental Indenture;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(l) resolutions adopted by the Board of Directors of the Company, effective June 8, 2022, relating to the preparation and filing with the Commission of the Registration Statement and the issuance of the Company's securities; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(m) the written consent of Assistant Treasurer, Chris R. Bauer, effective March 21, 2023, relating to the offering of the Securities.

I or attorneys under my supervision (with whom I have consulted) have also examined originals or copies, certified or otherwise identified to our satisfaction, of such records of the Company and such agreements and certificates and receipts of public officials, certificates of officers or other representatives of the Company and others, and such other documents, certificates and records 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 or photostatic copies, and the authenticity of such copies. In making my examination of executed documents, I have assumed that the parties thereto, other than the Company, had the power, limited liability company or other, to enter into and perform all obligations thereunder and I have also assumed the due authorization by all requisite action, limited liability company or other, and the execution and delivery by such parties of such documents and, except to the extent expressly set forth below, the validity and binding effect thereof on such parties. As to any facts material to the opinions expressed herein which were not independently established or verified, I or attorneys under my supervision (with whom I have consulted) have relied upon oral or written statements and representations of officers and other representatives of the Company and others.

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

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

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(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.

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 therefor in accordance with the terms of the Underwriting Agreement and the Indenture, the Securities will constitute valid and binding obligations of the Company entitled to the benefits of the Indenture and enforceable against the Company in accordance with their terms.

This opinion is furnished for your benefit in connection with your rendering an opinion to the Company to be filed as an exhibit to the Registration Statement through incorporation by reference of a current report on Form 8-K, and I hereby consent to your attaching this opinion as an annex to such opinion. In giving this consent, I do not thereby admit that I am in the category of persons whose consent is required under Section 7 of the Securities 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/ Elizabeth Heneghan |
| Elizabeth Heneghan, Esq. |

---

## Exhibit 99.1

**Exhibit 99.1**

***Execution Copy***

**DUKE ENERGY indiana, LLC<br> $500,000,000 FIRST MORTGAGE BONDS, SERIES AAAA, 5.40%, DUE APRIL 1, 2053**

***UNDERWRITING AGREEMENT***

March 21, 2023

BofA Securities, Inc.

One Bryant Park

New York, New York 10036

Citigroup Global Markets Inc.

388 Greenwich Street

New York, New York 10013

SMBC Nikko Securities America, Inc.

277 Park Avenue

New York, New York 10172

TD Securities (USA) LLC

1 Vanderbilt Avenue, 11th Floor

New York, New York 10017

Truist Securities, Inc.

3333 Peachtree Rd, NE

Atlanta, Georgia 30326

---

| | |
|:---|:---|
| As Representatives of the several Underwriters | As Representatives of the several Underwriters |
| c/o | BofA Securities, Inc. |
|  | One Bryant Park |
|  | New York, New York 10036 |

---

Ladies and Gentlemen:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1. *Introductory*. DUKE ENERGY Indiana, LLC, an Indiana limited liability company (the "**Company**"), proposes, subject to the terms and conditions stated herein, to issue and sell $500,000,000 aggregate principal amount of the Company's First Mortgage Bonds, Series AAAA, 5.40%, Due April 1, 2053 (the "**Bonds**"). The Bonds will be issued under and secured by an Indenture of Mortgage or Deed of Trust, dated September 1, 1939 (the "**Original Mortgage**"), between the Company and Deutsche Bank National Trust Company, as successor trustee (the "**Trustee**"), as supplemented and amended from time to time, including by the Seventy-First Supplemental Indenture, to be dated as of March 23, 2023 (the "**Supplemental Indenture**" and together with the Original Mortgage (as supplemented and amended) the "**First Mortgage Indenture**"). BofA Securities, Inc., Citigroup Global Markets, Inc., SMBC Nikko Securities America, Inc., TD Securities (USA) LLC and Truist Securities, Inc. (the "**Representatives**") are acting as representatives of the several underwriters named in Schedule A hereto (together with the Representatives, the "**Underwriters**"). The Company understands that the several Underwriters propose to offer the Bonds for sale upon the terms and conditions contemplated by (i) this Agreement and (ii) the Base Prospectus, the Preliminary Prospectus and the Permitted Free Writing Prospectus (each as defined below) issued at or prior to the Applicable Time (as defined below) (the documents referred to in the foregoing subclause (ii) are referred to herein as the "**Pricing Disclosure Package**").

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2. *Representations and Warranties of the Company.* As of the date hereof, as of the Applicable Time (as defined below) and as of the Closing Date (as defined below), the Company represents and warrants to, and agrees with, the several Underwriters that:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(a) A registration statement (No. 333-267583-04),
including a prospectus, relating to the Bonds 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 Bonds immediately prior to the Applicable Time 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 Company and the Underwriters for the Bonds 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 Company; and the term "**Prospectus** "
means the Base Prospectus together with the prospectus supplement specifically relating to the Bonds 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 the Registration Statement, any 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 Company 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 1:55 p.m. (New York City time) on the date hereof.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(b) The Registration Statement,
the Permitted Free Writing Prospectus specified on Schedule B hereto, the Preliminary Prospectus and the Prospectus conform, and any
amendments or supplements thereto will conform, in all material respects to the requirements of the 1933 Act and the 1933 Act Regulations;
and (i) the Registration Statement, as of its original effective date, as of the date of any amendment, 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, 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 (ii) (A) the Pricing Disclosure Package, as of the Applicable
Time, did not, (B) the Prospectus and any amendment or supplement thereto, as of their dates, will not, and (C) 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 Company 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 Company by the Representatives on behalf of the Underwriters specifically for use in the Registration
Statement, the Permitted Free Writing Prospectus, any Preliminary Prospectus or the Prospectus.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(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 Bonds or until any earlier date that the Company notified or notifies the Underwriters pursuant to Section 5(f) hereof
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.

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

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(e) The documents and interactive
data in eXtensible Business Reporting Language ()"**XBRL**") 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, (i) at the time the Registration Statement became effective, (ii) at the Applicable Time and (iii) 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.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(f) The Company's most recent
Annual Report filed on Form 10-K meets the conditions specified in General Instruction I(1)(a) and (b) of the General
Instructions for Form 10-K.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(g) The compliance by the Company
with all of the provisions of this Agreement has been duly authorized by all necessary limited liability company action and the consummation
of the transactions herein contemplated will not conflict with or result in a breach 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 Company
or its subsidiary is a party or by which either is bound or to which any of their respective properties or assets are subject that would
have a material adverse effect on the business, financial condition or results of operations of the Company and its subsidiary, taken
as a whole; nor will such compliance result in any violation of the provisions of the Company's Articles of Organization ()"**Articles** ")
or the Company's Limited Liability Company Operating Agreement ()"**Operating Agreement**") or any statute or any
order, rule or regulation of any court or governmental agency or body having jurisdiction over the Company or its subsidiary or
any of their respective properties that would have a material adverse effect on the business, financial condition or results of operations
of the Company and its subsidiary, taken as a whole. 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 Company of the transactions contemplated by
this Agreement, except for authorization by the Indiana Utility Regulatory Commission ()"**IURC** "), registration of the
offer and sale of the Bonds under the 1933 Act, qualification of the First Mortgage Indenture 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 Bonds by the Underwriters.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(h) This Agreement has been duly
authorized, executed and delivered by the Company.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(i) The Original Mortgage has been
duly authorized, executed and delivered by the Company and duly qualified under the 1939 Act. The Supplemental Indenture has been duly
authorized by the Company and, when executed and delivered by the Company (assuming the due authorization, execution and delivery thereof
by the Trustee), the First Mortgage Indenture will constitute a valid and legally binding instrument of the Company, enforceable against
the Company in accordance with its terms, except as (i) the enforceability thereof may be limited by bankruptcy, insolvency, or
similar laws affecting mortgagee's and other creditors' rights generally, and (ii) the rights of acceleration and the
availability of equitable remedies may be limited by equitable principles of general applicability.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(j) The Bonds have been duly authorized
by the Company and when executed by the Company, authenticated by the Trustee (in the manner provided in the First Mortgage Indenture)
and delivered against payment therefor will constitute valid and legally binding obligations of the Company, enforceable against the
Company in accordance with their terms, except as (i) the enforceability thereof may be limited by bankruptcy, insolvency, or similar
laws affecting mortgagee's and other creditors' rights generally, and (ii) the rights of acceleration and the availability
of equitable remedies may be limited by equitable principles of general applicability.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(k) The Company (i) is a limited
liability company duly organized and validly existing in good standing under the laws of the State of Indiana and (ii) is duly qualified
to do business in each jurisdiction where the failure to be so qualified would materially adversely affect the ability of the Company
to perform its obligations under this Agreement, the First Mortgage Indenture or the Bonds.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3. *Purchase, Sale and Delivery of Bonds.* On the basis of the representations, warranties and agreements herein contained, but subject to the terms and conditions herein set forth, the Company agrees to sell to the Underwriters, and the Underwriters agree, severally and not jointly, to purchase from the Company, at a purchase price of 99.035% of the principal amount of the Bonds plus accrued interest, if any, from March 23, 2023 (and in the manner set forth below), the respective principal amount of Bonds set forth opposite the name of each Underwriter on Schedule A hereto plus the respective principal amount of additional Bonds which each such Underwriter may become obligated to purchase pursuant to the provisions of Section 8 hereof. The Underwriters hereby agree to make a payment to the Company for $625,000 of expenses incurred by the Company in connection with the offering of the Bonds.

Payment of the purchase price for the Bonds to be purchased by the Underwriters and the payment referred to above shall be made to the Company by wire transfer of immediately available funds, payable to the order of the Company against delivery of the Bonds, in fully registered form, to you or upon your order at 10:00 a.m., New York City time, on March 23, 2023 or such other time and date as shall be mutually agreed upon in writing by the Company and the Representatives (the "**Closing Date**"). The Bonds shall be delivered in the form of one or more global certificates in aggregate denomination equal to the aggregate principal amount of the Bonds upon original issuance, and registered in the name of Cede & Co., as nominee for The Depository Trust Company ("**DTC**"). 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, New York 10019.

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

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5. *Covenants of the Company.* The Company covenants and agrees with the several Underwriters that:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(a) The Company 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.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(b) If at any time when a prospectus
relating to the Bonds (or the notice referred to in Rule 173(a) of the 1933 Act Regulations) is required to be delivered under
the 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 Company promptly will prepare and file with the Commission an amendment, a 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.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(c) The Company, during the period
when a prospectus relating to the Bonds 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.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(d) Without the prior consent of
the Underwriters, the Company has not made and will not make any offer relating to the Bonds 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 Company, it has not made and will not make any
offer relating to the Bonds 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 Company
pursuant to Rule 433 of the 1933 Act Regulations ()"**Rule 433** "); any such free writing prospectus (which shall
include the pricing term sheet referred to in Section 5(e) below), the use of which has been consented to by the Company and
the Underwriters, is specified in Item 3 of Schedule B and herein is called a "**Permitted Free Writing Prospectus**."
The Company 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.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(e) The Company agrees to prepare
a pricing term sheet specifying the terms of the Bonds 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 prior to the close of business two business days after the date hereof.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(f) The Company 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 statements therein, in the light of the circumstances then prevailing, not misleading, the Company 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; provided, however, that this covenant shall not apply to any statements or omissions made in reliance
upon and in conformity with written information furnished to the Company by the Representatives on behalf of the Underwriters specifically
for use in the Registration Statement, the Pricing Disclosure Package or the Prospectus.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(g) The Company 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 Company'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 Company's fiscal quarter next following the date of this Agreement.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(h) The Company will furnish to
you, without charge, copies of the Registration Statement (three 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.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(i) The Company will arrange or
cooperate in arrangements, if necessary, for the qualification of the Bonds 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 Company shall not
be required to qualify as a foreign limited liability company or to file any general consents to service of process under the laws of
any state where it is not now so subject.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(j) The Company 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 Bonds, (iii) the
issuance and delivery of the Bonds as specified herein, (iv) the fees and disbursements of counsel for the Underwriters in connection
with the qualification of the Bonds 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 $7,500), (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 Bonds, (vii) any fees and expenses in connection with the listing of the Bonds
on the New York Stock Exchange LLC, (viii) any filing fee required by the Financial Industry Regulatory Authority, Inc., (ix) the
costs of any depository arrangements for the Bonds with DTC or any successor depositary and (x) the costs and expenses of the Company
relating to investor presentations on any "road show" undertaken in connection with the marketing of the offering of the
Bonds, 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 Company, travel and lodging expenses
of the Underwriters and officers of the Company 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).

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

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(a) The Prospectus shall have been
filed by the Company 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 Company with
the Commission within the applicable time periods prescribed for such filings by, and otherwise in compliance with, Rule 433.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(b) At 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 Company
or you, shall be threatened by the Commission.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(c) At or after the Applicable Time
and prior to the Closing Date, the rating assigned by Moody's Investors Service, Inc. or S&P Global Ratings (or any of
their successors) to any debt securities or preferred stock of the Company as of the date of this Agreement shall not have been lowered.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(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 Company and its subsidiary, taken as a whole, financial or otherwise, except
as reflected in or contemplated by the Pricing Disclosure Package and the Prospectus, and since such dates and up to the Closing Date,
there shall not have been any material transaction entered into by the Company 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 Bonds on the
terms and in the manner contemplated by the Pricing Disclosure Package and the Prospectus.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(e) You shall have received an opinion
of Elizabeth Heneghan, Esq., Deputy General Counsel of Duke Energy Business Services LLC, the service company subsidiary of Duke
Energy Corporation (who in such capacity provides legal services to the Company) (or other appropriate counsel reasonably satisfactory
to the Representatives, which may include Duke Energy Corporation's other "in-house" counsel), dated the Closing Date,
to the effect that:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(i) The Company is a limited liability
company duly organized and validly existing under the laws of the State of Indiana, with power and authority (limited liability company
and other) to own its properties and conduct its business as described in the Pricing Disclosure Package and the Prospectus and to enter
into and perform its obligations under this Agreement.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(ii) The Company's sole subsidiary
is a corporation duly organized and validly existing under the laws of Indiana and has due corporate and governmental authority to carry
on the business in which it is engaged, except where the failure would not, singularly or in the aggregate, reasonably be expected to
have a material adverse effect on the consolidated financial position, member's equity, results of operations, business or prospects
of the Company and its subsidiary, taken as a whole, and to own and operate the properties in use in such business.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(iii) The execution, delivery and
performance of this Agreement, the First Mortgage Indenture and the Bonds and compliance by the Company with its obligations hereunder
and thereunder (x) will not conflict with, or result in any charge or encumbrance upon any of the assets of the Company (other than
pursuant to the First Mortgage Indenture) pursuant to the terms of, or constitute a default under, any agreement, indenture or instrument
known to such counsel, or result in a violation of the Articles or Operating Agreement of the Company (as in effect on the Closing Date)
or any order, rule or regulation (also as in effect on the Closing Date) of any court or governmental agency having jurisdiction
over the Company and (y) the issuance of the Bonds in accordance with the First Mortgage Indenture and the sale of the Bonds in
accordance with this Agreement, do not and will not result in any violation by the Company of any of the terms or provisions of the Articles
or Operating Agreement, or of the First Mortgage Indenture, or any mortgage or other agreement or instrument known to such counsel by
which the Company is bound.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(iv) The First Mortgage Indenture
is in due and proper form, has been duly and validly authorized by all necessary limited liability company action, has been duly executed
and delivered by the Company, qualified under the 1939 Act, and, assuming due authorization, execution and delivery by the Trustee, the
First Mortgage Indenture is a valid and binding instrument of the Company, enforceable in accordance with its terms, except as (i) the
enforceability thereof may be limited by bankruptcy, insolvency, or similar laws affecting mortgagees' and other creditors'
rights generally, and (ii) the rights of acceleration and the availability of equitable remedies may be limited by equitable principles
of general applicability.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(v) The issue of the Bonds by the
Company in accordance with the terms of the First Mortgage Indenture has been duly authorized by all necessary limited liability company
action; when duly executed by the Company, authenticated by the Trustee and delivered to and paid for by the Underwriters pursuant to
this Agreement, the Bonds will constitute the legal, valid and binding obligations of the Company enforceable in accordance with their
terms, secured by the lien of and entitled to the benefits provided by the First Mortgage Indenture, except as (i) the enforceability
thereof may be limited by bankruptcy, insolvency, or similar laws affecting mortgagees' and other creditors' rights generally,
and (ii) the rights of acceleration and the availability of equitable remedies may be limited by equitable principles of general
applicability.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(vi) The Company has good and marketable
title to the properties, rights and assets described in and conveyed by the First Mortgage Indenture and not released by the Trustee
from the lien thereof prior to the time of delivery of the Bonds, subject only to the lien of the First Mortgage Indenture, to "permitted
liens" as defined in the First Mortgage Indenture and to certain encumbrances and defects in respect of certain properties in service
the aggregate book value of which is not deemed material; the description in the First Mortgage Indenture of such properties, rights
and assets is adequate to constitute the First Mortgage Indenture a lien thereon; the First Mortgage Indenture, subject only to the matters
referred to above, constitutes a valid and direct first lien on such properties, rights and assets, which include substantially all permanent
fixed properties and franchises of the Company (except that real estate which is not used or useful in the public utility business of
the Company is excluded from the lien of the First Mortgage Indenture by the provisions thereof); and all permanent fixed properties
and franchises acquired by the Company subsequent to the time of issuance of the Bonds (except that in certain cases real estate which
is not used or useful in the public utility business of the Company is excluded from the lien of the First Mortgage Indenture by the
provisions thereof) will be subject to the lien of the First Mortgage Indenture, subject, however, to "permitted liens" as
defined in the First Mortgage Indenture and liens, if any, existing or placed on such properties at the time of acquisition thereof by
the Company.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(vii) The First Mortgage Indenture,
other than the Supplemental Indenture, has been duly filed for record in such manner and in such places as are required by law in order
to give constructive notice of, and to establish, preserve and protect the lien of, the First Mortgage Indenture on all property of the
Company of every kind referred to in the First Mortgage Indenture as subject to the lien thereof.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(viii) Except as referred to in the
Pricing Disclosure Package and the Prospectus, there is no action, suit or proceeding, inquiry or investigation, at law or in equity
or before or by any court, public board or body, pending or, to such counsel's knowledge, threatened against or affecting the Company,
wherein an unfavorable decision, ruling or finding would (i) materially and adversely affect the condition (financial or otherwise),
results of operations, business or properties of the Company or (ii) materially and adversely affect the transactions contemplated
by this Agreement, or which would adversely affect the validity or enforceability of the First Mortgage Indenture or the Bonds. 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 Company or any of its properties that would be required to be disclosed in the Registration
Statement, the Pricing Disclosure Package or the Prospectus and is not so disclosed.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(ix) An order of the IURC relating
to the issuance of the Bonds has been duly entered and, to such counsel's knowledge, has not been modified or repealed in any respect
and is in full force and effect. The issuance and sale of the Bonds to the Underwriters are in conformity with the terms of such order.
Except as may be required under the 1933 Act or the securities or Blue Sky laws of any jurisdiction, no further consent, approval, authorization
or order of, or registration or filing with, any court or governmental or public agency, authority or body is required with respect to
the Company for the execution, delivery and performance of this Agreement, the First Mortgage Indenture or the Bonds, the issuance by
the Company of the Bonds or the consummation by the Company of the transactions contemplated by this Agreement, the First Mortgage Indenture
or the Bonds.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(x) This Agreement has been duly
authorized, executed and delivered by the Company.

In addition, such counsel shall state that 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 an opinion as to (i) the financial statements and other financial and accounting data included or incorporated by reference therein or excluded therefrom, including with respect to compliance with XBRL interactive data requirements, (ii) the statement of the eligibility and qualification of the Trustee included in the Registration Statement or (iii) the information in the Prospectus Supplement under the caption "Book-Entry System"). 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 an opinion as to (i) the financial statements and other financial and accounting data included or incorporated by reference therein or excluded therefrom, including with respect to XBRL interactive data requirements, or (ii) the information in the Prospectus Supplement under the caption "Book-Entry System").

Such counsel shall expressly authorize the Underwriters to rely on such counsel's opinion dated the Closing Date delivered to the Trustee pursuant to the First Mortgage Indenture.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(f) You shall have received an opinion
of Hunton Andrews Kurth LLP, counsel to the Company, dated the Closing Date, to the effect that:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(i) The Supplemental Indenture
has been duly authorized, executed and delivered by the Company, and assuming due authorization, execution and delivery by the Trustee,
the First Mortgage Indenture constitutes a legal, valid and binding obligation of the Company enforceable against the Company in accordance
with its terms (subject to applicable bankruptcy, insolvency, reorganization, moratorium, fraudulent transfer and other similar laws
affecting mortgagees' and other creditors' rights generally from time to time in effect, and to general principals of equity,
including, without limitation, concepts of materiality, reasonableness, good faith and fair dealing, regardless of whether considered
in a proceeding in equity or at law).

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(ii) The Bonds have been duly authorized
and, when executed and authenticated in accordance with the provisions of the Original Mortgage and delivered to and paid for by the
Underwriters pursuant to this Agreement, will constitute legal, valid and binding obligations of the Company entitled to the benefits
of the Original Mortgage and enforceable against the Company in accordance with their terms (subject to applicable bankruptcy, insolvency,
reorganization, moratorium, fraudulent transfer and other similar laws affecting mortgagees' and other creditors' rights
generally from time to time in effect and to general principals of equity, including, without limitation, concepts of materiality, reasonableness,
good faith and fair dealing, regardless of whether considered in a proceeding in equity or at law).

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(iii) This Agreement has been duly
authorized, executed and delivered by the Company.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(iv) The statements set forth (i) under
the caption "Description of First Mortgage Bonds" in the Base Prospectus and (ii) under the caption "Description
of the Mortgage Bonds" in the Pricing Disclosure Package and the Prospectus, insofar as such statements purport to summarize certain
provisions of the First Mortgage Indenture and the Bonds, fairly summarize such provisions in all material respects.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(v) The statements set forth in
the Pricing Disclosure Package and the Prospectus under the caption "Certain U.S. Federal Income Tax Considerations for Non-U.S.
Holders," insofar as such statements purport to constitute summaries of matters of United States federal income tax law, constitute
accurate and complete summaries, in all material respects, subject to the qualifications set forth therein.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(vi) The Company is not, and solely
after giving effect to the offering and sale of the Bonds and the application of the proceeds thereof as described in the Prospectus,
will not be subject to registration and regulation as an "investment company" as such term is defined in the Investment Company
Act of 1940, as amended.

In rendering the foregoing opinions, such counsel may state that it has relied as to certain factual matters on information obtained from public officials, officers and representatives of the Company and has assumed that the signatures on all documents examined by such counsel are genuine, and that such counsel has not independently verified such factual matters or assumptions. In giving their opinion, such counsel may rely on the opinion of Elizabeth Heneghan, Esq., Deputy General Counsel of Duke Energy Business Services, LLC, the service company subsidiary of Duke Energy Corporation (who in such capacity provides legal services to the Company) (or other appropriate counsel reasonably satisfactory to the Representatives, which may include Duke Energy Corporation's other "in-house" counsel), as to matters of Indiana law.

You shall also have received a statement of Hunton Andrews Kurth LLP, dated the Closing Date, to the effect that:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(i) no facts have come to such counsel's attention that have caused such counsel to believe that the documents filed by the Company 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, when filed, 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 with respect to the financial statements, schedules and other financial and accounting information included or incorporated by reference therein or excluded therefrom, including with respect to compliance with XBRL interactive data requirements), (ii) no facts have come to such counsel's attention that have caused such counsel to believe that the Registration Statement, at the Applicable Time, and the Prospectus, as of its date, appeared on their face not 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 with respect to the financial statements, schedules and other financial and accounting information included or incorporated by reference therein or excluded therefrom, including with respect to compliance with XBRL interactive data requirements or that part of the Registration Statement that constitutes the statement of eligibility on 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 with respect to the financial statements, schedules and other financial and accounting information included or incorporated by reference therein or excluded therefrom, including with respect to compliance with XBRL interactive data requirements, or that part of the Registration Statement that constitutes the statement of eligibility on 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 with respect to the financial statements, schedules and other financial and accounting information included or incorporated by reference therein or excluded therefrom, including with respect to compliance with XBRL interactive data requirements).

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 made with the Commission within the time period required by Rule 433(d) of the 1933 Act Regulations. Such statement shall further state that assuming the accuracy of the factual matters contained in the representations and warranties of the Company set forth in Section 2(d) of this Agreement, the Registration Statement became effective upon filing with the Commission pursuant to Rule 462 of the 1933 Act Regulations and, pursuant to Section 309 of the 1939 Act, the First Mortgage Indenture has been qualified under the 1939 Act, and that based solely on such counsel's review of the Commission's website, no stop order suspending the effectiveness of the Registration Statement has been issued and, to such counsel's knowledge, no proceedings for that purpose have been instituted or are pending or threatened by the Commission.

In addition, such counsel may state that such counsel does not pass upon, or assume any responsibility for, the accuracy, completeness or fairness of the statements contained or incorporated by reference in the Registration Statement, the Pricing Disclosure Package or the Prospectus and has made no independent check or verification thereof (except to the limited extent referred to in Sections 6(f)(iv) and (v) above).

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(g) You shall have received a letter
from Sidley Austin llp , counsel for the Underwriters, dated the Closing Date, with respect
to such opinions and statements as you may reasonably request, and the Company shall have furnished to such counsel such documents as
it may request for the purpose of enabling it to pass upon such matters. In delivering its letter pursuant to this Section 6(g),
Sidley Austin llp may rely on the opinion of Elizabeth Heneghan, Esq., Deputy General
Counsel of Duke Energy Business Services LLC, the service company subsidiary of Duke Energy Corporation (or other appropriate counsel
reasonably satisfactory to the Representatives, which may include Duke Energy Corporation's other "in-house" counsel)
as to matters of Indiana law.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(h) On or after the date hereof,
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 Company or Duke Energy Corporation, on the New York Stock Exchange LLC; 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 Bonds 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 Company as provided in Section 5(j) hereof.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(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 Company, 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 Company in this Agreement are true and correct as of the Closing Date, that
the Company 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.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(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 &
Touche LLP, the Company'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 in 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 member's equity, 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.

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

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(l) An appropriate order or orders
of the IURC necessary to permit the issue and sale of the Bonds as contemplated hereby and containing no material provision or condition
which is unacceptable to the Company or the Underwriters shall be in effect and no proceedings to suspend the effectiveness of such order
or orders shall be pending or threatened.

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

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

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(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 Preliminary Prospectus, the Pricing Disclosure Package, the
Prospectus (or any amendment or supplement thereto) or any Permitted Free Writing Prospectus, or the omission or alleged omission therefrom
of a material fact necessary in order to make the statements therein, in the 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 Company by the Representatives on behalf of the Underwriters expressly for use in the Registration
Statement (or any amendment thereto), the Preliminary Prospectus, the Pricing Disclosure Package, the Prospectus (or any amendment or
supplement thereto) or any Permitted Free Writing Prospectus;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(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 Company; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(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 subsection 7(a).

In no case shall the Company be liable under this indemnity agreement with respect to any claim made against any Underwriter or any such controlling person unless the Company 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 Company shall not relieve it from any liability which it may have otherwise than under subsections 7(a) and 7(d). The Company 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, 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 Company 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 Company and such Underwriter or such controlling person shall have been advised by such counsel that a conflict of interest between the Company 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 Company 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 Company 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 controls the Company within the meaning of Section 15 of the 1933 Act, in connection with the sale of the Bonds.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(b) Each Underwriter severally and
not jointly agrees that it will indemnify and hold harmless the Company, its directors and each of the officers of the Company who signed
the Registration Statement and each person, if any, who controls the Company within the meaning of Section 15 of the 1933 Act to
the same extent as the indemnity contained in subsection (a) of this Section 7, but only with respect to statements or omissions
made in the Registration Statement (or any amendment thereto), the Preliminary Prospectus, 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 Company by the Representatives on behalf of the Underwriters expressly for use in the Registration Statement (or any
amendment thereto), the Preliminary Prospectus, 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 Company or any person so indemnified based
on the Registration Statement (or any amendment thereto), the Preliminary Prospectus, 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 Company, and the Company and each person so indemnified
shall have the rights and duties given to the Underwriters, by the provisions of subsection (a) of this Section 7.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(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.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(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 Company on the one hand and the Underwriters on the other from the offering of the Bonds. 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 Company on the one hand and the Underwriters
on the other in connection with the statements or omissions 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 Company 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 Company 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 Company 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 Company and the Underwriters
agree that it would not be just and equitable if contributions pursuant to this Section 7 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 7. 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 7 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 7, no Underwriter shall be required to contribute any amount
in excess of the amount by which the total price at which the Bonds 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.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8. *Default by One or More of the Underwriters.* (a) If any Underwriter shall default in its obligation to purchase the principal amount of the Bonds 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 Bonds on the terms contained herein. If within twenty-four hours after such default by any Underwriter you do not arrange for the purchase of such Bonds, then the Company shall be entitled to a further period of twenty-four hours within which to procure another party or other parties satisfactory to you to purchase such Bonds on such terms. In the event that, within the respective prescribed periods, you notify the Company that you have so arranged for the purchase of such Bonds, or the Company notifies you that it has so arranged for the purchase of such Bonds, you or the Company 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 Company 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 person substituted under this Section 8 with like effect as if such person had originally been a party to this Agreement with respect to such Bonds.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(b) If, after giving effect to any
arrangements for the purchase of the Bonds of a defaulting Underwriter or Underwriters by you or the Company as provided in subsection
(a) above, the aggregate amount of such Bonds which remains unpurchased does not exceed one-tenth of the aggregate amount of all
the Bonds to be purchased at such Closing Date, then the Company shall have the right to require each non-defaulting Underwriter to purchase
the amount of Bonds 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 Bonds which such Underwriter agreed to purchase hereunder) of the
Bonds 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.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(c) If, after giving effect to any
arrangements for the purchase of the Bonds of a defaulting Underwriter or Underwriters by you or the Company as provided in subsection
(a) above, the aggregate amount of such Bonds which remains unpurchased exceeds one-tenth of the aggregate amount of all the Bonds
to be purchased at such Closing Date, or if the Company shall not exercise the right described in subsection (b) above to require
non-defaulting Underwriters to purchase the Bonds of a defaulting Underwriter or Underwriters, then this Agreement shall thereupon terminate,
without liability on the part of any non-defaulting Underwriter or the Company, except for the expenses to be borne by the Company 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.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9. *Representations and Indemnities to Survive Delivery.* The respective indemnities, agreements, representations, warranties and other statements of the Company 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 Company, or any of their respective officers or directors or any controlling person referred to in Section 7 hereof, and will survive delivery of and payment for the Bonds.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;10. *Reliance on Your Acts.* In all dealings hereunder, the Representatives shall act on behalf of each of the Underwriters, and the Company 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.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;11. *No Fiduciary Relationship*. The Company acknowledges and agrees that (i) the purchase and sale of the Bonds pursuant to this Agreement is an arm's-length commercial transaction between the Company 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 Company 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 Company with respect to the offering contemplated hereby or the process leading thereto (irrespective of whether such Underwriter has advised or is currently advising the Company on other matters) and no Underwriter has any obligation to the Company 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 Company, and (v) the Underwriters have not provided any legal, accounting, regulatory or tax advice with respect to the transaction contemplated hereby and the Company has consulted its own legal, accounting, regulatory and tax advisors to the extent it deemed appropriate.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;12. Recognition of the U.S. Special Resolution Regimes.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(i) In the event that any Underwriter that is a Covered Entity (as defined below) becomes subject to a proceeding under a U.S. Special Resolution Regime (as defined below), the transfer from such Underwriter of this Agreement, and any interest and obligation in or under this Agreement, will be effective to the same extent as the transfer would be effective under the U.S. Special Resolution Regime if this Agreement, and any such interest and obligation, were governed by the laws of the United States or a state of the United States.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(ii) In the event that any Underwriter that is a Covered Entity or a BHC Act Affiliate (as defined below) of such Underwriter becomes subject to a proceeding under a U.S. Special Resolution Regime, Default Rights (as defined below) under this Agreement that may be exercised against such Underwriter are permitted to be exercised to no greater extent than such Default Rights could be exercised under the U.S. Special Resolution Regime if this Agreement were governed by the laws of the United States or a state of the United States.

As used in this Section 12:

"**BHC Act Affiliate**" has the meaning assigned to the term "affiliate" in, and shall be interpreted in accordance with, 12 U.S.C. § 1841(k).

"**Covered Entity**" means any of the following:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(i) a "covered entity" as that term is defined in, and interpreted in accordance with, 12 C.F.R. § 252.82(b);

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(ii) a "covered bank" as that term is defined in, and interpreted in accordance with, 12 C.F.R. § 47.3(b); or

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(iii) a "covered FSI" as that term is defined in, and interpreted in accordance with, 12 C.F.R. § 382.2(b).

"**Default Right**" has the meaning assigned to that term in, and shall be interpreted in accordance with, 12 C.F.R. §§ 252.81, 47.2 or 382.1, as applicable.

"**U.S. Special Resolution Regime**" means each of (i) the Federal Deposit Insurance Act and the regulations promulgated thereunder and (ii) Title II of the Dodd-Frank Wall Street Reform and Consumer Protection Act and the regulations promulgated thereunder.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;13. *Notices.* All communications hereunder will be in writing and, if sent to the Underwriters, will be mailed or telecopied and confirmed to BofA Securities, Inc., 114 West 47th Street, NY8-114-07-01, New York, NY 10036, Attention: High Grade Transaction Management/Legal, Facsimile: (212) 901-7881, Email: dg.hg_ua_notices@bofa.com; Citigroup Global Markets Inc., 388 Greenwich Street, New York, NY 10013, Attention: General Counsel, Facsimile: (646) 291-1469; SMBC Nikko Securities America, Inc., 277 Park Avenue, New York, NY 10172, Attention: Debt Capital Markets; TD Securities (USA) LLC, 1 Vanderbilt Avenue, 11th Floor, New York, NY 10017, Email: USTransactionadvisorygroup@tdsecurities.com Attention: Transaction Advisory Group and Truist Securities, Inc., 3333 Peachtree Road NE, Atlanta, GA 30326, Fax No.: (404) 926-5027, Attention: Investment Grade Debt Capital Markets or, if sent to the Company, will be mailed or telecopied and confirmed to it at 526 South Church Street, Charlotte, North Carolina 28202, Attention: Chris R. Bauer, Assistant Treasurer, Telephone: (704) 382-5826. Any such communications shall take effect upon receipt thereof.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;14. *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.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;15. *Successors.* This Agreement shall inure to the benefit of and be binding upon the Underwriters and the Company 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 Bonds from any Underwriter shall be deemed to be a successor or assign by reason merely of such purchase.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;16. *Counterparts; Electronic Signatures.* This Agreement may be executed in two or more counterparts, each of which when so executed shall be deemed to be an original and all of which when taken together shall constitute one and the same instrument. The words "execution," "signed," "signature," and words of like import in this Agreement or in any other certificate, agreement or document related to this Agreement, the Indenture or the Bonds shall include images of manually executed signatures transmitted by facsimile or other electronic format (including, without limitation, "pdf", "tif" or "jpg") and other electronic signatures (including, without limitation, DocuSign and AdobeSign). The use of electronic signatures and electronic records (including, without limitation, any contract or other record created, generated, sent, communicated, received, or stored by electronic means) shall be of the same legal effect, validity and enforceability as a manually executed signature or use of a paper-based record-keeping system to the fullest extent permitted by applicable law, including the Federal Electronic Signatures in Global and National Commerce Act, the New York State Electronic Signatures and Records Act and any other applicable law, including, without limitation, any state law based on the Uniform Electronic Transactions Act or the Uniform Commercial Code.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;17. *Applicable Law.* This Agreement shall be governed by, and construed in accordance with, the laws of the State of New York.

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 Agreement and such confirmation and acceptance will become a binding agreement between the Company, on the one hand, and each of the Underwriters, on the other hand, in accordance with its terms.

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| | |
|:---|:---|
| Very truly yours, | Very truly yours, |
| Duke Energy Indiana, LLC | Duke Energy Indiana, LLC |
| By: | /s/ Chris R. Bauer |
|  | Name: Chris R. Bauer |
|  | Title: Assistant Treasurer |

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[*Remainder of page left blank intentionally*]

[*Signature Page to Underwriting Agreement*]

The foregoing Underwriting Agreement is hereby<br> confirmed and accepted as of the date first above written:

BofA Securities, Inc.

Citigroup Global Markets inc.

SMBC Nikko Securities America, Inc.

TD Securities (USA) LLC

Truist Securities, Inc.

On behalf of each of the Underwriters

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| | | | |
|:---|:---|:---|:---|
| BofA Securities, Inc. | BofA Securities, Inc. | Citigroup Global Markets Inc. | Citigroup Global Markets Inc. |
| /s/ Tom Croft | /s/ Tom Croft | /s/ Brian D. Bednarski | /s/ Brian D. Bednarski |
| Name: | Tom Croft | Name: | Brian D. Bednarski |
| Title: | Managing Director | Title: | Managing Director |
| SMBC Nikko Securities America, Inc. | SMBC Nikko Securities America, Inc. | TD Securities (USA) LLC | TD Securities (USA) LLC |
| /s/ John Bolger | /s/ John Bolger | /s/ Luiz Lanfredi | /s/ Luiz Lanfredi |
| Name: | John Bolger | Name: | Luiz Lanfredi |
| Title: | Managing Director | Title: | Director |
| Truist Securities, Inc. | Truist Securities, Inc. | | |
| /s/ Robert Nordlinger | /s/ Robert Nordlinger | | |
| Name: | Robert Nordlinger | | |
| Title: | Director | | |

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**SCHEDULE A**

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| | |
|:---|:---|
| Underwriter | Principal Amount <br> of Bonds |
| BofA Securities, Inc.. | $75000000 |
| Citigroup Global Markets Inc. | 75000000 |
| SMBC Nikko Securities America, Inc. | 75000000 |
| TD Securities (USA) LLC | 75000000 |
| Truist Securities, Inc. | 75000000 |
| Credit Suisse Securities (USA) LLC | 40000000 |
| Mizuho Securities USA LLC | 40000000 |
| Regions Securities LLC | 30000000 |
| Academy Securities, Inc. | 3750000 |
| Great Pacific Securities | 3750000 |
| Mischler Financial Group, Inc. | 3750000 |
| Samuel A. Ramirez & Company, Inc. | 3750000 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Total | $500000000 |

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**SCHEDULE B**

**PRICING DISCLOSURE PACKAGE**

1) Base Prospectus

2) Preliminary Prospectus Supplement dated March 21, 2023

3) Permitted Free Writing Prospectus

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;a) Pricing Term Sheet attached as Schedule C hereto

**SCHEDULE C**

***Filed pursuant to Rule 433***

***March*** ***21, 2023***

***Relating to***

***Preliminary Prospectus Supplement dated March*** ***21, 2023 to***

***Prospectus dated September 23, 2022***

***Registration Statement No. 333-267583-04***

**DUKE ENERGY indiana, LLC<br> $500,000,000 FIRST MORTGAGE BONDS, SERIES** **AAAA, 5.40%, DUE APRIL 1, 2053**

<u>Pricing Term Sheet</u>

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| | |
|:---|:---|
| &nbsp;&nbsp;Issuer: | &nbsp;&nbsp;Duke Energy Indiana, LLC (the "**Issuer**") |
| &nbsp;&nbsp;Trade Date: | &nbsp;&nbsp;March 21, 2023 |
| &nbsp;&nbsp;Settlement Date: | &nbsp;&nbsp;March 23, 2023; T+2 |
| &nbsp;&nbsp;Security Description: | &nbsp;&nbsp;First Mortgage Bonds, Series AAAA, 5.40%, Due April 1, 2053 (the "**Mortgage Bonds**") |
| &nbsp;&nbsp;Interest Payment Dates: | &nbsp;&nbsp;April 1 and October 1 of each year, beginning on October 1, 2023 |
| &nbsp;&nbsp;Principal Amount: | &nbsp;&nbsp;$500000000 |
| &nbsp;&nbsp;Maturity Date: | &nbsp;&nbsp;April 1, 2053 |
| &nbsp;&nbsp;Coupon: | &nbsp;&nbsp;5.40% |
| &nbsp;&nbsp;Benchmark Treasury: | &nbsp;&nbsp;4.000% due November 15, 2052 |
| &nbsp;&nbsp;Benchmark Treasury Price: | &nbsp;&nbsp;105-08 |
| &nbsp;&nbsp;Benchmark Treasury Yield: | &nbsp;&nbsp;3.706% |
| &nbsp;&nbsp;Spread to Benchmark Treasury: | &nbsp;&nbsp;+ 170 bps |
| &nbsp;&nbsp;Yield to Maturity: | &nbsp;&nbsp;5.406% |
| &nbsp;&nbsp;Price to Public: | &nbsp;&nbsp;99.910% per Mortgage Bond |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Redemption Provisions/ Make-Whole Call:<br>| &nbsp;&nbsp; Prior to October 1, 2052 (the date that is six months prior to the maturity date of the Mortgage Bonds (the "**Par Call Date**")), the Issuer may redeem the Mortgage Bonds at its option, in whole or in part, at any time and from time to time, at a redemption price (expressed as a percentage of principal amount and rounded to three decimal places) equal to the greater of: (a) the sum of the present values of the remaining scheduled payments of principal and interest thereon discounted to the redemption date (assuming the Mortgage Bonds matured on the Par Call Date) on a semi-annual basis (assuming a 360-day year consisting of twelve 30-day months) at the Treasury Rate plus 30 basis points less (b) interest accrued to the redemption date; and 100% of the principal amount of the Mortgage Bonds to be redeemed, plus, in either case, accrued and unpaid interest thereon to, but excluding the redemption date.<br>|

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| | |
|:---|:---|
|  | &nbsp;&nbsp;On or after the Par Call Date, the Issuer may redeem the Mortgage Bonds at its option, in whole or in part, at any time and from time to time, at a redemption price equal to 100% of the principal amount of the Mortgage Bonds to be redeemed plus accrued and unpaid interest thereon to, but excluding, the redemption date. |
| &nbsp;&nbsp;CUSIP / ISIN: | &nbsp;&nbsp;26443T AD8 / US26443TAD81 |
| &nbsp;&nbsp;Joint Book-Running Managers: | &nbsp;&nbsp; BofA Securities, Inc.<br> Citigroup Global Markets Inc.<br> SMBC Nikko Securities America, Inc.<br> TD Securities (USA) LLC<br> Truist Securities, Inc.<br> Credit Suisse Securities (USA) LLC<br> Mizuho Securities USA LLC |
| &nbsp;&nbsp;Co-Managers: | &nbsp;&nbsp; Regions Securities LLC<br> Academy Securities, Inc.<br> Great Pacific Securities<br> Mischler Financial Group, Inc.<br> Samuel A. Ramirez & Company, Inc. |

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**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 BofA Securities, Inc. toll-free at (800) 294-1322 or by email at dg.prospectus_requests@bofa.com; Citigroup Global Markets Inc. toll-free at (800) 831-9146; SMBC Nikko Securities America, Inc. toll-free at 1-888-868-6856; TD Securities (USA) LLC toll-free at 1-855-495-9846 or Truist Securities, Inc. toll-free at 1-800-685-4786.**