SIXTH SUPPLEMENTAL INDENTURE among VECTREN UTILITY HOLDINGS, INC., AS ISSUER INDIANA GAS COMPANY, INC., AS GUARANTOR SOUTHERN INDIANA GAS AND ELECTRIC COMPANY, AS GUARANTOR VECTREN ENERGY DELIVERY OF OHIO, INC., AS GUARANTOR and Dated March 10, 2008

Exhibit 4.1

SIXTH SUPPLEMENTAL INDENTURE

among

VECTREN UTILITY HOLDINGS, INC., AS ISSUER

INDIANA GAS COMPANY, INC., AS GUARANTOR

SOUTHERN INDIANA GAS AND ELECTRIC COMPANY, AS GUARANTOR

VECTREN ENERGY DELIVERY OF OHIO, INC., AS GUARANTOR

and

U.S. BANK NATIONAL ASSOCIATION, AS TRUSTEE

Dated March 10, 2008

TABLE OF CONTENTS


		Page
ARTICLE I DEFINITIONS		3
SECTION 1.1. DEFINITION OF TERMS.		3
ARTICLE II GENERAL TERMS AND CONDITIONS OF THE NOTES		5
SECTION 2.1. DESIGNATION AND PRINCIPAL AMOUNT; GUARANTEES.		5
SECTION 2.2. MATURITY.		5
SECTION 2.3. FORM AND PAYMENT.		5
SECTION 2.4. GLOBAL NOTE.		6
SECTION 2.5. PAYMENT OF PRINCIPAL AND INTEREST.		7
ARTICLE III REDEMPTION OF THE NOTES; DEFEASANCE		8
SECTION 3.1. REDEMPTION AT THE COMPANY’S OPTION.		8
SECTION 3.2. NO SINKING FUND.		8
SECTION 3.3. DEFEASANCE.		8
SECTION 3.4. REDEMPTION UPON DEATH OF A BENEFICIAL OWNER.		8
ARTICLE IV MISCELLANEOUS		11
SECTION 4.1. RATIFICATION OF INDENTURE.		11
SECTION 4.2. TRUSTEE NOT RESPONSIBLE FOR RECITALS.		12
SECTION 4.3. GOVERNING LAW.		12
SECTION 4.4. SEPARABILITY.		12
SECTION 4.5. COUNTERPARTS.		12
SECTION 4.6. AMENDMENTS.		12


EXHIBIT A -		FORM OF NOTE
ANNEX A -		FORM OF REDEMPTION REQUEST
EXHIBIT B -		TRUSTEE’S CERTIFICATE OF AUTHENTICATION

SIXTH SUPPLEMENTAL INDENTURE, dated as of March 10, 2008 (the “Sixth Supplemental Indenture”), among Vectren Utility Holdings, Inc., an Indiana corporation (the “Company”), Indiana Gas Company, Inc., an Indiana corporation and an Ohio corporation (“Indiana Gas”), Southern Indiana Gas and Electric Company, an Indiana corporation (“SIGECO”) and Vectren Energy Delivery of Ohio, Inc., an Ohio corporation (“VEDO”, and together with Indiana Gas and SIGECO, the “Initial Guarantors”) and U.S. Bank National Association (the “Trustee”).

WHEREAS, the Company and the Initial Guarantors executed and delivered the Indenture dated as of October 19, 2001 (the “Base Indenture”) to the Trustee to provide for the Company’s unsecured notes, debentures or other evidence of indebtedness of the Company (collectively, the “Securities”), and the Guarantees (as hereinafter defined), to be issued from time to time in one or more series, as might be determined by the Company under the Base Indenture;

WHEREAS, pursuant to the terms of the Base Indenture, the Company desires to provide for the establishment of a new series of Debt Securities, the 6.25% Senior Monthly Notes due 2039 (the “Notes”), and the unconditional guarantees by the Guarantors (as defined herein) of the payment of the amounts owed with respect to the Notes (the “Guarantees”), the form and terms of such Notes and the terms, provisions and conditions of the Notes and the Guarantees to be set forth as provided in the Base Indenture and this Sixth Supplemental Indenture (together, the “Indenture”);

WHEREAS, the Company and the Initial Guarantors requested that the Trustee execute and deliver this Sixth Supplemental Indenture and all requirements necessary to make this Sixth Supplemental Indenture a valid, binding and enforceable instrument in accordance with its terms, and to make the Notes, when executed, authenticated and delivered by the Company and with the Guarantees endorsed thereon and executed by the Guarantors, the valid, binding and enforceable obligations of the Company and the Guarantors, as applicable, have been made:

NOW, THEREFORE, in consideration of the purchase and acceptance of the Notes by the Holders thereof, and for the purpose of setting forth, as provided in the Base Indenture, the form and terms of the Notes, each of the Company and the Initial Guarantors, as applicable, covenants and agrees with the Trustee as follows:

ARTICLE I

DEFINITIONS

SECTION 1.1. Definition of Terms.

(a) Unless the context otherwise requires:

(b) a term defined in the Base Indenture has the same meaning when used in this Sixth Supplemental Indenture;

(d) the singular includes the plural and vice versa;

(e) headings are for convenience of reference only and do not affect interpretation;

(f) the following terms have the meanings given to them in this Section 1.1(f):

“Beneficial Owner” has the meaning specified in Section 3.4.

“Fiscal Agent” means U.S. Bank Trust National Association, New York, New York, or its successor.

“Global Note” shall have the meaning set forth in Section 2.4.

“Guarantors” shall have the meaning specified in Section 2.1.

“Initial Period” has the meaning specified in Section 3.4.

“Interest Payment Date” means the first day of each calendar month, commencing April 1, 2008.

“Maturity Date” shall have the meaning specified in Section 2.2.

“Original Issue Date” means March 10, 2008.

“Participants” shall have the meaning specified in Section 3.4.

“Quarterly Redemption Date” means January 1, April 1, July 1 and October 1 of each year, beginning July 1, 2008.

“Redemption Price” shall have the meaning specified in Section 3.1.

“Redemption Request” shall have the meaning specified in Section 3.4.

“Regular Record Date” means, with respect to any Interest Payment Date for the Notes, the close of business on the fifteenth day (whether or not a Business Day) prior to such Interest Payment Date.

“Representatives” shall have the meaning specified in Section 3.4.

“Subsequent Period” shall have the meaning specified in Section 3.4.

The following terms shall have the respective meanings set forth in the recitals to this Sixth Supplemental Indenture:

“Base Indenture”

“Company”

“Guarantees”

“Indenture”

“Indiana Gas”

“Initial Guarantors”

“Notes”

“Sixth Supplemental Indenture”

“Securities”

“SIGECO”

“Trustee”

“VEDO”

ARTICLE II

GENERAL TERMS AND CONDITIONS OF THE NOTES

SECTION 2.1. Designation and Principal Amount; Guarantees.

There is hereby authorized a new series of Securities, designated the 6.25% Senior Monthly Notes due 2039, limited (except as otherwise provided in Article 2 of the Base Indenture) in aggregate principal amount to $125,000,000. The Notes may be issued from time to time upon written order of the Company for the authentication and delivery of Notes pursuant to Section 2.03 of the Base Indenture. Each of the Initial Guarantors (together with each other subsidiary of the Company that pursuant to the terms of the Indenture guarantees the Company’s obligations under the Notes and the Indenture, the “Guarantors”) fully and unconditionally and jointly and severally guarantees to the Holders of the Notes upon which the Guarantees are endorsed, upon authentication and delivery by the Trustee, the due and punctual payment of the principal of, and interest on, and any Redemption Price with respect to, the Notes, when and as the same shall become due and payable, whether at the Maturity Date, upon acceleration or redemption or otherwise, in accordance with the terms of the Notes and of the Indenture.

SECTION 2.2. Maturity.

The date upon which the principal on the Notes shall become due and payable at final maturity is April 1, 2039 (the “Maturity Date”) if not redeemed in full previously in accordance with Article III of this Sixth Supplemental Indenture.

SECTION 2.3. Form and Payment.

The Notes shall be issued in fully registered certificated form without interest coupons, bearing identical terms (except as otherwise provided in Article 2 of the Base Indenture). Principal

of, and interest on, and any Redemption Price with respect to, the Notes will be payable, the transfer of such Notes will be registrable and such Notes will be exchangeable for Notes bearing identical terms at the office or agency of the Company maintained for such purpose as described below.

The Company hereby designates the Borough of Manhattan, The City of New York as a place of payment (“Place of Payment”) for the Notes, and the office or agency maintained by the Company in such Place of Payment for the purposes contemplated by this Section 2.3 shall initially be the Corporate Trust Office of the Trustee at 000 Xxxx Xxxxxx, Xxxxx 0000, Xxx Xxxx, Xxx Xxxx 00000, Attention: Xxxxxxx Xxxxxxxx.

The Notes shall be issuable in denominations of $1,000 and integral multiples of $1,000 in excess thereof.

The Notes may be issued, in whole or in part, in permanent global form and, if issued in permanent global form, the Depository shall be The Depository Trust Company or such other depositary as any officer of the Company may from time to time designate.

The Registrar, the Paying Agent and the transfer agent for the Notes shall initially be the Trustee.

The Notes shall be in substantially the form set forth in Exhibit A hereto.

SECTION 2.4. Global Note.

(a) Unless and until it is exchanged for Notes in registered certificated form, a global note in principal amount equal to the aggregate principal amount of the Notes (the “Global Note”) may be transferred, in whole but not in part, only to the Depository or a nominee of the Depository, or to a successor Depository or to a nominee of such successor Depository.

(b) If at any time (i) the Depository notifies the Company that it is unwilling or unable to continue as a Depository for the Global Note and no successor Depository shall have been appointed within 90 days after such notification, (ii) the Depository ceases to be a clearing agency registered under the Securities Exchange Act of 1934 or any other applicable rule or regulation and no successor Depository shall have been appointed within 90 days after the Company becoming aware of the Depository’s ceasing to be so registered, (iii) the Company, in its sole discretion, determines that the Global Note shall be so exchangeable or (iv) there shall have occurred and be continuing an Event of Default, the Company will execute, and, subject to Article 2 of the Base Indenture, the Trustee, upon written notice from the Company, will authenticate and deliver Notes, with the Guarantees endorsed thereon and executed by the Guarantors, in registered certificated form without coupons, in authorized denominations, and in an aggregate principal amount equal to the principal amount of the Global Note in exchange for such Global Note. Upon the exchange of the Global Note for such Notes in registered certificated form without coupons, in authorized denominations, the Global Note shall be cancelled by the Trustee. Such Notes in registered certificated form issued in exchange for the Global Note shall be registered in such names and in such authorized

denominations as the Depository, pursuant to instructions from its direct or indirect participants or otherwise, shall instruct the Trustee. The Trustee shall deliver such Notes to the Depository for delivery to the Persons in whose names such Notes are so registered.

SECTION 2.5. Payment of Principal and Interest.

The Notes shall bear interest at the per annum rate of 6.25%.

Interest shall be paid monthly in arrears on each Interest Payment Date commencing on April 1, 2008. Payments of interest on the Notes will include interest accrued from, and including, the immediately preceding Interest Payment Date to which interest has been paid or duly provided for (or from, and including, the Original Issue Date if no interest has been paid or duly provided for) to, but excluding, the applicable Interest Payment Date or date of earlier redemption, as the case may be. Interest payments for the Notes shall be computed and paid on the basis of a 360-day year consisting of twelve 30-day months.

The interest so payable and punctually paid or duly provided for on any Interest Payment Date will be paid to the Holder(s) of the Notes as of the Regular Record Date for such Interest Payment Date. Any such interest that is not so punctually paid or duly provided for on any Interest Payment Date will forthwith cease to be payable to the Holders of the Notes as of the close of business on such Regular Record Date and may either be paid to the Person or Persons in whose name such Notes are registered at the close of business on a Special Record Date for the payment of such defaulted interest to be fixed by the Trustee, notice whereof shall be given to Holders of the Notes by the Trustee not less than fifteen (15) days prior to such Special Record Date, or be paid at any time in any other lawful manner, all as more fully provided in the Base Indenture.

Payment of the principal of, and any interest (other than interest due on an Interest Payment Date) on, the Notes due on the Maturity Date or date of earlier redemption, as the case may be, shall be made in immediately available funds, upon presentation and surrender of the applicable Notes at the office or agency maintained by the Company for that purpose in the Borough of Manhattan, The City of New York, currently the office of the Trustee located at 000 Xxxx Xxxxxx, Xxxxx 0000, Xxx Xxxx, Xxx Xxxx 00000, or at such other paying agency in the Borough of Manhattan, The City of New York, as the Company may determine. Payment of interest due on any Interest Payment Date will be made by wire transfer to the Holders entitled thereto of immediately available funds at such place and to such account at a banking institution in the United States as may be designated in wire transfer instructions received in writing by the Trustee at least sixteen (16) days prior to such Interest Payment Date or, if not so received, by check mailed to the address of the applicable Holders in the Security Register. Any such wire transfer instructions received by the Trustee shall remain in effect until revoked by such Holder.

Any payments on the Notes will be made in such coin or currency of the United States of America as at the time of payment is legal tender for payment of public and private debts.

In the event that any Interest Payment Date or the Maturity Date or date of earlier redemption falls on a day that is not a Business Day, the required payment of principal and/or interest payable on such date shall be made on the next succeeding Business Day with the same force and effect as if made on the date such payment was due, and no interest shall accrue with respect to such payment for the period from and after such Interest Payment Date or the Maturity Date or date of earlier redemption, as the case may be, to the date of such payment on the next succeeding Business Day.

ARTICLE III

REDEMPTION OF THE NOTES; DEFEASANCE

SECTION 3.1. Redemption at the Company’s Option.

The Notes shall be subject to redemption at the option of the Company, in whole at any time or in part from time to time, on or after April 1, 2013 at a price (the “Redemption Price”) equal to 100% of the principal amount to be redeemed plus any accrued and unpaid interest thereon to but excluding the applicable redemption date; provided, however, that interest payable on a Note with respect to an Interest Payment Date that falls on or before such redemption date shall be made to the Holder thereof on the Regular Record Date related to such Interest Payment Date.

In the event of redemption of the Notes in part only, a new Note or Notes for the unredeemed portion will be issued in the name or names of the Holders thereof upon the presentation and surrender thereof, as set forth in Section 3A.08 of the Base Indenture.

Notice of redemption shall be given as provided in Section 3A.05 of the Base Indenture.

Any redemption of less than all of the Notes shall, with respect to the principal thereof, be divisible by $1,000.

SECTION 3.2. No Sinking Fund.

The Notes are not subject to, or entitled to the benefit of, any sinking fund.

SECTION 3.3. Defeasance.

Article 8 of the Base Indenture describing Defeasance and Covenant Defeasance shall apply to the Notes.

SECTION 3.4. Redemption upon Death of a Beneficial Owner.

Unless the Notes have been declared due and payable prior to the Maturity Date by reason of an Event of Default, or have been previously redeemed or otherwise repaid in accordance with their terms, the Representative (as hereinafter defined) of a deceased Beneficial Owner (as hereinafter defined) of Notes has the right to request redemption prior to the Maturity Date of all or part of such Notes, and the Company will redeem the same, subject to the limitations and conditions that the

Company will not be obligated to redeem, during the period from the Original Issue Date through and including April 1, 2009 (the “Initial Period”), and, during any twelve-month period that ends on and includes each April 1 thereafter (each such twelve-month period being hereinafter referred to as a “Subsequent Period”), (i) Notes with an aggregate principal amount in excess of $25,000 from the Representative of any deceased Beneficial Owner or (ii) Notes exceeding $2,500,000 in aggregate principal amount from the Representatives of all deceased Beneficial Owners.

The Company may, at its option, redeem any deceased Beneficial Owner’s Notes in the Initial Period or any Subsequent Period in excess of $25,000. Any such redemption, to the extent that it exceeds the $25,000 limitation for the Representative of any deceased Beneficial Owner, shall not be included in the computation of the $2,500,000 limitation for the Representatives of all deceased Beneficial Owners for the applicable period or for any succeeding Subsequent Period. The Company may, at its option, also redeem deceased Beneficial Owners’ Notes in the Initial Period or in any Subsequent Period in an aggregate principal amount exceeding $2,500,000. Any such redemption, to the extent it exceeds the $2,500,000 limitation for the Representatives of all deceased Beneficial Owners, shall not reduce the $2,500,000 limitation for all such Representatives for the applicable period or any Subsequent Period. On any determination by the Company to redeem Notes in excess of the $25,000 limitation for the Representative of any deceased Beneficial Owner or the $2,500,000 limitation for the Representatives of all deceased Beneficial Owners, Notes so redeemed shall be redeemed in the order of the receipt of Redemption Requests (as hereinafter defined) by the Trustee.

A request for redemption of a Note may be initiated by the Representative of a deceased Beneficial Owner. For purposes of making a redemption request, the Representative of a deceased Beneficial Owner is any person who is the personal representative of, or is otherwise authorized to represent, the estate of such deceased Beneficial Owner or the surviving joint tenant or tenant(s) by the entirety or the trustee of a trust (each, a “Representative”). A Representative may initiate a request for redemption at any time. The Representative shall deliver its request to the Participant (as hereinafter defined) through whom the deceased Beneficial Owner owned the Note to be redeemed, in form satisfactory to such Participant, together with evidence of the death of such Beneficial Owner, evidence of the authority of the Representative satisfactory to such Participant, any waivers, notices or certificates as may be required under applicable state or federal law and any such other evidence of the right to such redemption as such Participant may require. The request must specify the principal amount of the Notes to be redeemed in denominations of $1,000 and integral multiples thereof. Subject to the rules and arrangements applicable to the Depository, the Participant will thereupon deliver to the Depository a request for redemption substantially in the form attached to the Notes as Annex A (a “Redemption Request”). The Depository will, upon receipt of a Redemption Request, forward the same to the Trustee. The Trustee shall maintain records with respect to Redemption Requests received by it, including the date of receipt, the name of the Participant filing the Redemption Request and the status of each Redemption Request with respect to the $25,000 individual limitation and the $2,500,000 aggregate limitation. The Trustee will immediately file with the Company each Redemption Request it receives, together with the information regarding the eligibility of the Redemption Request with respect to the $25,000 individual limitation and the $2,500,000 aggregate limitation. The Company, the Depository and the Trustee may conclusively

assume, without independent investigation or verification, that the statements contained in each Redemption Request are true and correct and shall have no responsibility (a) for reviewing any documents submitted to the Participant by the Representative or (b) for determining whether the deceased person is in fact the Beneficial Owner of the Notes to be redeemed or is in fact deceased and whether the Representative is duly authorized to request redemption on behalf of the applicable Beneficial Owner.

Subject to the $25,000 individual limitation and the $2,500,000 aggregate limitation, the Company will, after the death of any Beneficial Owner, redeem the Notes on the next Quarterly Redemption Date occurring not less than 30 days following receipt by the Company of a Redemption Request from the Trustee. If a Redemption Request exceeds the $25,000 individual limitation, or if all Redemption Requests exceed the $2,500,000 aggregate limitation during the applicable period, then the excess Redemption Requests will be applied in the order received by the Trustee to successive Subsequent Periods, regardless of the number of Subsequent Periods required to redeem the Notes to which such Redemption Requests relate. The Company may, at any time, notify the Trustee that it will redeem, on the next Quarterly Redemption Date occurring not less than 30 days after that notice, all or any lesser amount of Notes for which Redemption Requests have been received but which are not then eligible for redemption by reason of the $25,000 individual limitation or the $2,500,000 aggregate limitation. Any Notes so redeemed shall be redeemed in the order of receipt of Redemption Requests by the Trustee.

The price to be paid by the Company for the Notes to be redeemed pursuant to a Redemption Request is 100% of the principal amount of those Notes plus any accrued but unpaid interest thereon to but excluding the applicable redemption date; provided, however, that interest payable on a Note with respect to an Interest Payment Date that falls on or before such redemption date shall be made to the Holder of such Note on the Regular Record Date related to such Interest Payment Date. Subject to arrangements with the Depository, payment for the Notes to be redeemed shall be made to the Depository upon presentation of Notes to the Trustee for redemption in the aggregate principal amount specified in the Redemption Requests submitted to the Trustee by the Depository which are to be fulfilled on that date. The principal amount of any Notes acquired or redeemed by the Company other than by redemption at the option of any Representative of a deceased Beneficial Owner pursuant to this Section 3.4 shall not be included in the computation of either the $25,000 individual limitation or the $2,500,000 aggregate limitation for the Initial Period or for any Subsequent Period.

For purposes of this section, a “Beneficial Owner” means the person who has the right to sell, transfer or otherwise dispose of a Note and the right to receive the proceeds from that sale, as well as the interest thereon and principal thereof. In general, a determination of beneficial ownership in the Notes will be subject to the rules, regulations and procedures governing the Depository and institutions (“Participants”) that have accounts with the Depository or a nominee thereof.

For purposes of this section, a Note held in tenancy by the entirety, joint tenancy or by tenants in common will be deemed to be held by a single Beneficial Owner, and the death of a tenant by the entirety, joint tenant or tenant in common will be deemed the death of the Beneficial Owner of such

Note. The death of a person who, during his or her lifetime, was entitled to substantially all of the rights of a Beneficial Owner of a Note will be deemed the death of the Beneficial Owner of such Note, regardless of the recordation of such ownership of such Note on the records of the Participant, if such rights can be established to the satisfaction of the Participant and the Company.

In the case of a Redemption Request that is presented on behalf of a deceased Beneficial Owner that has not been fulfilled at the time the Company gives notice of its election to redeem the Notes pursuant to Section 3.1 hereof, the Notes that are the subject of such pending Redemption Request shall be redeemed prior to any other Notes pursuant to Section 3.1 hereof to the extent the aggregate principal amount of such Notes does not exceed the aggregate principal amount of Notes the Company has elected to redeem pursuant to Section 3.1 hereof.

The Representative of a deceased Beneficial Owner of Notes may initiate the withdrawal of any Redemption Request by making a request therefor to the applicable Participant and requesting the Participant to request that the Depository make a similar request to the Trustee not less than 60 days prior to the Quarterly Redemption Date on which such Notes are first eligible for redemption. The Company may, at its option, purchase any Notes for which Redemption Requests have been received in lieu of redeeming such Notes.

During such time or times as the Notes are not represented by a Global Security and are issued in certificated form, all references herein to Participants and the Depository, including the Depository’s governing rules, regulations and procedures, shall be deemed deleted, all determinations which under this Section the Participants are required to make shall be made by the Company (including, without limitation, determining whether the applicable decedent is in fact the Beneficial Owner of a Note to be redeemed or is in fact deceased and whether the Representative is duly authorized to request redemption on behalf of the applicable Beneficial Owner), and all Redemption Requests, to be effective, shall be delivered by the Representative to the Trustee, with a copy to the Company, and shall be in the form of a Redemption Request (with appropriate changes mutually agreed to by the Trustee and the Company to reflect the fact that such Redemption Request is being executed by a Representative (including provision for signature guarantees)) and, in addition to all documents that are otherwise required to accompany a Redemption Request, shall be accompanied by the Note that is the subject of such request and, if applicable, a properly executed assignment or endorsement. If the record ownership of a Note is held by a nominee of the deceased Beneficial Owner, a certificate or letter from such nominee attesting to the deceased’s ownership of a beneficial interest in the Note must also be delivered.

ARTICLE IV

MISCELLANEOUS

SECTION 4.1. Ratification of Indenture.

The Base Indenture, as supplemented by this Sixth Supplemental Indenture, is in all respects ratified and confirmed, and this Sixth Supplemental Indenture shall be deemed part of the Indenture in the manner and to the extent herein and therein provided.

SECTION 4.2. Trustee Not Responsible for Recitals.

The recitals herein contained are made by the Company and not by the Trustee, and the Trustee assumes no responsibility for the correctness thereof. The Trustee makes no representation as to the validity or sufficiency of this Sixth Supplemental Indenture.

SECTION 4.3. Governing Law.

This Sixth Supplemental Indenture and each Note issued hereunder shall be deemed to be contracts made under the internal laws of the State of Indiana and for all purposes shall be governed by and construed in accordance with the laws of said State without regard to principles of conflicts of law.

SECTION 4.4. Separability.

In case any one or more of the provisions contained in this Sixth Supplemental Indenture or in the Notes shall for any reason be held to be invalid, illegal or unenforceable in any respect, then, to the extent permitted by law, such invalidity, illegality or unenforceability shall not affect any other provisions of this Sixth Supplemental Indenture or of the Notes, but this Sixth Supplemental Indenture and the Notes shall be construed as if such invalid or illegal or unenforceable provision had never been contained herein or therein.

SECTION 4.5. Counterparts.

This Sixth Supplemental Indenture may be simultaneously executed in any number of counterparts, each of which when so executed shall be an original, and all such counterparts shall together constitute but one and the same instrument.

SECTION 4.6. Amendments.

Notwithstanding any other provision hereof, all amendments to the Base Indenture made hereby shall have effect only with respect to the Notes, and not with respect to the Securities of any other series created prior to or subsequent to the date hereof.

[signature page follows]

IN WITNESS WHEREOF, the parties hereto have caused this Sixth Supplemental Indenture to be duly executed by their respective officers thereunto duly authorized, on the date or dates indicated in the acknowledgments and as of the day and year first above written.


VECTREN UTILITY HOLDINGS, INC. as Issuer

By:
		Xxxxxx X. Xxxxxxx, Xx.
		Executive Vice President and Chief Financial Officer

Attest:


By:
		Xxxxxx X. Xxxxxxxxx
		Executive Vice President, Chief Administrative Officer and Secretary


INDIANA GAS COMPANY, INC. as Initial Guarantor

By:
		Xxxxxx X. Xxxxxxx, Xx.
		Executive Vice President and Chief Financial Officer

Attest:


By:
		Xxxxxx X. Xxxxxxxxx
		Executive Vice President, Chief Administrative Officer and Secretary


SOUTHERN INDIANA GAS AND ELECTRIC COMPANY as Initial Guarantor

By:
		Xxxxxx X. Xxxxxxx, Xx.
		Executive Vice President and Chief Financial Officer

Sixth Supplemental Indenture

Attest:


By:
		Xxxxxx X. Xxxxxxxxx
		Executive Vice President, Chief Administrative Officer and Secretary


VECTREN ENERGY DELIVERY OF OHIO, INC., as Initial Guarantor

By:
		Xxxxxx X. Xxxxxxx, Xx.
		Executive Vice President and Chief Financial Officer

Attest:


By:
		Xxxxxx X. Xxxxxxxxx
		Executive Vice President, Chief Administrative Officer and Secretary


U.S. BANK NATIONAL ASSOCIATION,
as Trustee

By:
Name:
Title:

Attest:


By:
Name:
Title:

Sixth Supplemental Indenture

Exhibit A

[Form of Face of Note]

UNLESS THIS SECURITY IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY TRUST COMPANY (“DTC”), 00 XXXXX XXXXXX, XXX XXXX, XXX XXXX, TO THE ISSUER OR ITS AGENT FOR REGISTRATION OF TRANSFER, EXCHANGE OR PAYMENT, AND SUCH SECURITY ISSUED IS REGISTERED IN THE NAME OF CEDE & CO., OR SUCH OTHER NAME AS 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, SINCE THE REGISTERED OWNER HEREOF, CEDE & CO., HAS AN INTEREST HEREIN.

UNLESS IT IS EXCHANGED IN WHOLE OR IN PART FOR SECURITIES IN DEFINITIVE REGISTERED FORM, THIS SECURITY 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 OF DTC OR A NOMINEE OF SUCH SUCCESSOR.

VECTREN UTILITY HOLDINGS, INC.

6.25% Senior Monthly Note due 2039


RATE OF INTEREST	STATED MATURITY DATE	ORIGINAL ISSUE DATE
6.25%	April 1, 2039	March 10, 2008

Registered Xx. 0		XXXXX Xx. 00000X AJ 0

Vectren Utility Holdings, Inc., a corporation duly organized and existing under the laws of the State of Indiana (herein called the “Company”), for value received, hereby promises to pay, without relief from valuation or appraisement laws, to Cede & Co. or registered assigns, the principal sum of $125,000,000 on the Stated Maturity Date shown above or any earlier date of redemption in accordance with the provisions on the reverse hereof (each such date shall be referred to herein as the “Stated Maturity Date” with respect to the principal payable on such date), and to pay interest on the outstanding principal of this Note, at the annual Rate of Interest shown above, from the Original Issue Date shown above or from the most recent Interest Payment Date (as hereinafter defined) to which interest has been paid or duly provided for, monthly in arrears on the first day of each calendar month (the “Interest Payment Date”) commencing April 1, 2008, and on any earlier date of redemption, as the case may be.

The interest so payable and punctually paid or duly provided for on any Interest Payment Date will be paid to the Holder of this Note as of the Regular Record Date for such Interest Payment Date. Any such interest that is not so punctually paid or duly provided for on any Interest Payment

Date will forthwith cease to be payable to the Holders of this Note as of the close of business on such Regular Record Date and may either be paid to the Person or Persons in whose name this Note is registered at the close of business on a Special Record Date for the payment of such defaulted interest to be fixed by the Trustee referred to on the reverse hereof, notice whereof shall be given to Holders of the Notes by the Trustee not less than fifteen (15) calendar days prior to such Special Record Date, or be paid at any time in any other lawful manner, all as more fully provided in the Indenture referred to on the reverse hereof.

Interest payable on this Note on any Interest Payment Date and on any earlier date of redemption, as the case may be, will be the amount of interest accrued during the applicable Interest Period (as defined below) computed on the basis of a 360-day year of twelve 30-day months.

An “Interest Period” is each period from and including the immediately preceding Interest Payment Date to which interest has been paid or duly provided for (or from and including the Original Issue Date in the case of the initial Interest Period) to but excluding the applicable Interest Payment Date or the Stated Maturity Date, as the case may be. If any Interest Payment Date or Stated Maturity Date falls on a day that is not a Business Day, principal and/or interest payable on such date will be paid on the succeeding Business Day with the same force and effect as if it were paid on the date such payment was due, and no interest will accrue on the amount so payable for the period from and after such date to such succeeding Business Day. “Business Day” means any day other than a Saturday, Sunday, or other day on which commercial banks are authorized or required by law, regulation or executive order to close in The City of New York.

Payment of the principal of, and any interest (other than interest due on an Interest Payment Date) on, this Note due on the Stated Maturity Date shall be made in immediately available funds, upon presentation and surrender of this Note at the office or agency maintained by the Company for that purpose in the Borough of Manhattan, The City of New York, currently the office of the Trustee located at 000 Xxxx Xxxxxx, Xxxxx 0000, Xxx Xxxx, Xxx Xxxx 00000, or at such other paying agency in the Borough of Manhattan, The City of New York, as the Company may determine. Notwithstanding the foregoing, payment of interest due on this Note on any Interest Payment Date will be made by wire transfer to the Holders entitled thereto of immediately available funds at such place and to such account at a banking institution in the United States as may be designated in wire transfer instructions received in writing by the Trustee at least sixteen (16) days prior to such Interest Payment Date. Any such wire transfer instructions received by the Trustee shall remain in effect until revoked by such Holder.

Any payments on this Note will be made in such coin or currency of the United States of America as at the time of payment is legal tender for payment of public and private debts.

Reference is hereby made to the further provisions of this Note set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place.

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

Unless the Certificate of Authentication has been executed by the Trustee by manual signature, this Note shall not be entitled to any benefit under the Indenture or the Guarantees (as defined on the reverse hereof) or be valid or obligatory for any purpose.

IN WITNESS WHEREOF, Vectren Utility Holdings, Inc. has caused this Note to be executed by two of its duly authorized officers.


VECTREN UTILITY HOLDINGS, INC.

By:
Title:		Executive Vice President and Chief Financial Officer

By:
Title:		Executive Vice President and Secretary

DATED: March 10, 2008

TRUSTEE’S CERTIFICATE OF AUTHENTICATION

This is one of the Notes referred to in the within-mentioned Indenture.


U.S. BANK NATIONAL ASSOCIATION,
As Trustee

By:
		Authorized Signatory

[Form of Reverse of Note]

VECTREN UTILITY HOLDINGS, INC.

6.25% Senior Monthly Notes due 2039

This Note is one of a duly authorized series of Securities (as defined below) of the Company (which term includes any successor corporation under the Indenture) designated as its “6.25% Senior Monthly Notes due 2039” (the “Notes”), issued or to be issued pursuant to an Indenture, dated as of October 19, 2001, as amended by the Sixth Supplemental Indenture dated March 10, 2008 (the “Indenture”), delivered by the Company and Indiana Gas Company, Inc., Southern Indiana Gas and Electric Company, and Vectren Energy Delivery of Ohio, Inc. (the “Initial Guarantors” and, together with each other subsidiary of the Company that pursuant to the terms of the Indenture guarantees the Company’s obligations under the Indenture, the “Guarantors”), to U.S. Bank National Association, as Trustee (the “Trustee,” which term includes any successor trustee under the Indenture). The terms of this Note include those stated in the Indenture and those made part of the Indenture by reference to the Trust Indenture Act of 1939, as in effect on the date of the Indenture. Reference is hereby made to the Indenture and all further supplemental indentures thereto for a statement of the respective rights, limitation of rights, duties and immunities thereunder of the Company, the Guarantors, the Trustee and the Holders and of the terms upon which the Notes are, and are to be, authenticated and delivered. All capitalized terms not defined herein shall have the meanings given to them in the Indenture.

Payments of principal and interest in respect of the Notes will be fully and unconditionally and jointly and severally guaranteed by the Guarantors, subject to the termination of any Guarantee of any Guarantor pursuant to the terms of Article Ten of the Indenture.

The Notes are a series of debt securities issued or to be issued by the Company under the Indenture that is limited in aggregate principal amount to $125,000,000, subject to the reopening provisions of the Indenture. The Indenture provides that the debt securities of the Company issuable or issued thereunder (the “Securities”), including the Notes, may be issued in one or more series, which different series may be issued in such aggregate principal amounts and on such terms (including, but not limited to, terms relating to interest rate or rates, provisions for determining such interest rate or rates and adjustments thereto, maturity, redemption (optional and mandatory), sinking fund, covenants and Events of Default) as may be provided in or pursuant to the resolutions of the Company’s Board of Directors providing for the issuance of such series and/or supplemental indenture (if any) relating to such series.

The Notes shall be subject to redemption at the option of the Company, in whole at any time or in part from time to time on or after April 1, 2013 at a price (the “Redemption Price”) equal to 100% of the principal amount to be redeemed plus any accrued and unpaid interest thereon to but excluding the applicable redemption date; provided, however, that interest payable on a Note with respect to an Interest Payment Date that falls on or before such redemption date shall be made to the Holder thereof on the Regular Record Date related to such Interest Payment Date. The Company shall exercise such optional redemption upon not less than 30 nor more than 60 days’ notice by mail prior to the date of redemption.

Subject to the conditions and restrictions contained in the Indenture, this Note may be redeemed, in whole or in part at the Redemption Price, at the request of the Representative of a deceased Beneficial Owner of this Note pursuant to a Redemption Request attached hereto as Annex A.

In the event of redemption of this Note in part only, a new Note or Notes of this series for the unredeemed portion hereof will be issued in the name of the Holder hereof upon the presentation and surrender hereof as set forth in Section 3A.08 of the Base Indenture. This Note will not have a sinking fund.

The Indenture contains provisions for defeasance at any time of (a) the entire indebtedness of this Note and (b) certain restrictive covenants, in each case upon compliance by the Company with certain conditions set forth therein, which provisions apply to this Note.

If an Event of Default, as defined in the Indenture, shall occur and be continuing, the principal of all the Notes may be (and, in certain cases, shall be) declared due and payable in the manner and with the effect provided in the Indenture.

The Indenture permits, with certain exceptions as therein provided, the amendment thereof and the modification of the rights and obligations of the Company and, if applicable, the Guarantors, and the rights of the Holders of the Notes at any time by the Company, the Guarantors, if applicable, and the Trustee with the consent of the Holders of a majority in aggregate principal amount of the Securities affected thereby, voting as a single class (which may include the Notes), at the time outstanding. The Indenture also contains provisions permitting the Holders of a majority in aggregate principal amount of the then outstanding Securities affected thereby, voting as a single class (which may include the Notes) to waive compliance by the Company with certain provisions of the Indenture and certain past defaults under the Indenture and their consequences. Any such consent or waiver by the Holder of this Note shall be conclusive and binding upon such Holder and upon all future Holders of this Note and of any Note issued upon the registration of transfer hereof or in exchange herefor in lieu hereof, whether or not notation of such consent or waiver is made upon this Note.

The Indenture provides that no Holder may pursue any remedy under the Indenture unless the Trustee shall have failed to act after notice of an Event of Default and written request by Holders of at least 25% in aggregate principal amount of the Notes and the offer to the Trustee of indemnity satisfactory to it; provided however, such provision does not affect the right of a Holder to xxx for

enforcement of any overdue payment on this Note.

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

As provided in the Indenture and subject to certain limitations herein and therein set forth, the transfer of this Note is registrable in the Security Register upon surrender of this Note for registration of transfer at the agency of the Company provided for that purpose duly endorsed by, or accompanied by a written instrument of transfer in substantially the form accompanying this Note duly executed by, the Holder hereof or his attorney duly authorized in writing, and thereupon one or more new Notes, of authorized denominations and for the same aggregate principal amount, will be issued to the designated transferee or transferees.

The Notes are issuable only in registered form without coupons in denominations of $1,000 and any integral multiple thereof. As provided in the Indenture and subject to certain limitations herein and therein set forth, the Notes are exchangeable for a like aggregate principal amount of Notes of a different authorized denomination, as requested by the Holder surrendering the same.

No service charge shall be made for any such registration of transfer or exchange, but the Company may require payment of a sum sufficient to cover any transfer tax or similar governmental charge payable in connection therewith (other than any such transfer taxes or similar governmental charge payable upon exchanges pursuant to Section 2.11, 3A.08 or 9.05, in which case such transfer taxes or similar governmental charges shall be paid by the Company).

Prior to due presentment of this Note for registration of transfer, the Company, the Guarantors, the Trustee and any agent of the Company, the Guarantors or the Trustee may treat the Holder of this Note as the owner hereof for all purposes, whether or not this Note be overdue, and none of the Company, the Guarantors, the Trustee or any such agent shall be affected by notice to the contrary.

This Note shall be governed by the laws of the State of Indiana without regard to principles of conflicts of law.

ASSIGNMENT FORM

If you the Holder want to assign this Note, fill in the form below and have your signature guaranteed:

I or we assign and transfer this Note to:

(PRINT OR TYPE NAME, ADDRESS AND ZIP CODE AND SOCIAL SECURITY OR TAX ID NUMBER OF ASSIGNEES)

and irrevocably appoint, agent to transfer this Note on the books of the Company. The agent may substitute another to act for him.


Dated:	Signed:

		(SIGN EXACTLY AS NAME APPEARS ON THE OTHER SIDE OF THIS NOTE.)

SIGNATURE GUARANTEE:

Notice: Signature(s) must be guaranteed by a member firm of the New York Stock Exchange or a commercial bank or trust company.

[Form of Guarantee of Note]

For good and valuable consideration receipt of which is hereby acknowledged, and intending to be legally bound hereby, each of Indiana Gas Company, Inc., Southern Indiana Gas and Electric Company, and Vectren Energy Delivery of Ohio, Inc. (together with each other subsidiary of the Company that pursuant to the terms of the Indenture guarantees the Company’s obligations under the Notes (as defined below) and the Indenture, the “Guarantors”) hereby unconditionally and jointly and severally guarantees to the Holder of the note (the “Note”), authenticated and delivered by the Trustee, upon which this guarantee (the “Guarantee”) is endorsed, the due and punctual payment of the principal of and interest on, and any Redemption Price with respect to, the Note, when and as the same shall become due and payable, whether at the Stated Maturity Date, upon acceleration or redemption or otherwise, in accordance with the terms of this Note and of the Indenture.

The Guarantors agree to determine, at least one Business Day prior to the date upon which a payment of principal of and/or interest on, and any Redemption Price with respect to, the Note, is due and payable, whether the Company has available the funds to make such payment as the same shall become due and payable. In case of the failure of the Company to punctually pay any such principal of or interest on, and any Redemption Price with respect to, the Note, each Guarantor hereby agrees to cause any such payment to be made punctually when and as the same shall become due and payable, whether at the Stated Maturity Date, upon acceleration or redemption or otherwise, and as if such payment were made by the Company.

The Guarantors hereby agree that their obligations hereunder shall be as principal and not merely as surety, and shall be unconditional, irrevocable, and absolute, irrespective of, and shall be unaffected by, any invalidity, irregularity, or unenforceability of the Note or such Indenture, any failure to enforce the provisions of the Note or the Indenture, or any waiver, modification, consent or indulgence granted to the Company with respect thereto (unless the same shall also be provided to the Guarantors) by the Holder of the Note or the Trustee with respect to any provisions thereof, the recovery of any judgment against the Company or any action to enforce the same, or any other circumstance which might otherwise constitute a legal or equitable discharge or defense of a surety or of a guarantor. The Guarantors hereby waive diligence, presentment, demand of payment, filing of claims with a court in the event of merger, insolvency or bankruptcy of the Company, any right to require a proceeding first against the Company, protest or notice with respect to any the Note or the indebtedness evidenced thereby, and all demands whatsoever and covenants that this Guarantee will not be discharged except by payment in full of the principal of and interest on, and any Redemption Price with respect to, the Note and the complete performance of the obligations contained in the Note, this Guarantee and the Indenture.

The Guarantors shall be subrogated to all rights of the Holder of the Note against the Company in respect of all amounts paid to such Holder by the Guarantors pursuant to the provisions of this Guarantee; provided, however, that the Guarantors shall not, without the consent of the Holders of all of the outstanding Notes (the “Notes”) of the series of which the Note is a part, be entitled to enforce or to receive any payments arising out of or based upon such right of subrogation until the principal of and interest on, and any Redemption Price with respect to, all Notes shall have been paid in full or payment thereof shall have been provided for and all other obligations contained

in the Notes, the related Guarantees and the Indenture shall have been performed. If any amount shall be paid to any Guarantor in violation of the preceding sentence and all amounts payable in respect of the Notes shall not have been paid in full, such amount shall be deemed to have been paid to such Guarantor for the benefit of, and held in trust for the benefit of, the Holders, and shall forthwith be paid to the Trustee for the benefit of the Holders, to be credited and applied upon such amounts. Each Guarantor acknowledges that it will receive direct and indirect benefits from the issuance of the Notes pursuant to this Indenture.

Notwithstanding anything to the contrary contained herein, if following any payment of the principal, Redemption Price or interest by the Company in respect of the Notes to the Holders of the Notes it is determined by a final decision of a court of competent jurisdiction that such payment shall be avoided by a trustee in bankruptcy (including any debtor-in-possession) as a preference under 11 U.S.C. Section 547 and such payment is returned by such Holder to such trustee in bankruptcy, then the obligations of the Guarantors hereunder shall remain in full force and effect to the extent of such repayment.

Notwithstanding anything to the contrary contained herein, this Guarantee shall be, and hereby is, limited to the maximum amount that may be guaranteed by the applicable Guarantor without rendering this Guarantee, as it relates to such Guarantor, voidable under any applicable law relating to fraudulent conveyance, fraudulent transfer or similar laws affecting the rights of creditors generally.

This Guarantee is intended for the benefit of the Trustee and each of the Holders of the Notes and shall be enforceable by such Trustee and such Holders.

This Guarantee is subject to termination in accordance with the provisions of Article 10 of the Indenture.

This Guarantee shall be governed by the laws of the State of Indiana without regard to principles of conflicts of law.

IN WITNESS WHEREOF, Indiana Gas Company, Inc. has caused this Guarantee to be executed by two of its duly authorized officers.


By:
Name:		Xxxxxx X. Xxxxxxx, Xx.
Title:		Executive Vice President and Chief Financial Officer


By:
Name:		Xxxxxx X. Xxxxxxxxx
Xxxxx:		Executive Vice President, Chief Administrative Officer and Secretary

DATED: March 10, 2008

IN WITNESS WHEREOF, Southern Indiana Gas and Electric Company has caused this Guarantee to be executed by two of its duly authorized officers.


By:
Name:		Xxxxxx X. Xxxxxxx, Xx.
Title:		Executive Vice President and Chief Financial Officer

By:
Name:		Xxxxxx X. Xxxxxxxxx
Xxxxx:		Executive Vice President, Chief Administrative Officer and Secretary

DATED: March 10, 2008

IN WITNESS WHEREOF, Vectren Energy Delivery of Ohio, Inc. has caused this Guarantee to be executed by two of its duly authorized officers.


By:
Name:		Xxxxxx X. Xxxxxxx, Xx.
Title:		Executive Vice President and Chief Financial Officer

By:
Name:		Xxxxxx X. Xxxxxxxxx
Xxxxx:		Executive Vice President, Chief Administrative Officer and Secretary

DATED: March 10, 2008

Annex A

FORM OF REDEMPTION REQUEST

VECTREN UTILITY HOLDING, INC.

6.25% SENIOR MONTHLY NOTES DUE 2039

(THE “NOTES”)

CUSIP NO. 92239M AJ 0

The undersigned, (the “Participant”), does hereby certify, pursuant to the provisions of that certain Indenture, dated as of October 19, 2001, as supplemented and amended (the “Indenture”), made by and among Vectren Utility Holdings, Inc. (the “Company”), Indiana Gas Company, Inc., Southern Indiana Gas and Electric Company and Vectren Energy Delivery of Ohio, Inc. (collectively, the “Guarantors”) and U.S. Bank Trust National Association, as Trustee (the “Trustee”), to The Depository Trust Company (the “Depositary”), the Company, the Guarantors and the Trustee that:

1. [Name of deceased Beneficial Owner] is deceased.

2. [Name of deceased Beneficial Owner] had a $ beneficial ownership interest in the above referenced Notes.

3. [Name of Representative] is [deceased Beneficial Owner’s personal representative/other person authorized to represent the estate of the Beneficial Owner/surviving joint tenant/surviving tenant by the entirety/trustee of a trust] of [Name of deceased Beneficial Owner] and has delivered to the undersigned a request for redemption in form satisfactory to the Participant, requesting that $ principal amount of said Notes be redeemed pursuant to said Indenture. The documents accompanying such request, all of which are in proper form, are in all respects satisfactory to the Participant and [Name of Representative] is entitled to have the Notes to which this Request relates redeemed.

4. The Participant holds the interest in the Notes with respect to which this Request is being made on behalf of [Name of deceased Beneficial Owner].

5. The Participant hereby certifies that it will indemnify and hold harmless the Depositary, the Trustee, the Company and the Guarantors (including their respective officers, directors, agents, attorneys and employees) against all damages, loss, cost, expense (including reasonable attorneys’ and accountants’ fees), obligations, claims or liability (collectively, the “Damages”) incurred by the indemnified party or parties as a result of or in connection with the redemption of Notes to which this Request relates. The Participant will, at the request of the Company, forward to the Company a copy of the documents submitted by [Name of Representative] in support of this Request.

IN WITNESS WHEREOF, the undersigned has executed this Request as of , .


[PARTICIPANT NAME]

By:
Name:
Title:

Exhibit B

TRUSTEE’S CERTIFICATE OF AUTHENTICATION

This is one of the Notes referred to in the within-mentioned Indenture.


U.S. BANK NATIONAL ASSOCIATION,
As Trustee

By:
		Authorized Signatory

Document Metadata

Table of Contents

SIXTH SUPPLEMENTAL INDENTURE among VECTREN UTILITY HOLDINGS, INC., AS ISSUER INDIANA GAS COMPANY, INC., AS GUARANTOR SOUTHERN INDIANA GAS AND ELECTRIC COMPANY, AS GUARANTOR VECTREN ENERGY DELIVERY OF OHIO, INC., AS GUARANTOR and Dated March 10, 2008

Document Metadata