PSI ENERGY, INC.

AND

THE FIFTH THIRD BANK,

Trustee



                        


Second Supplemental Indenture

Dated as of December 15, 1996

To

Indenture

Dated as of November 15, 1996


                        


6.25% Notes Due 2005







	
	

	SECOND SUPPLEMENTAL INDENTURE, dated as of December 15, 1996, 
between PSI Energy, Inc., a corporation duly organized and 
existing under the laws of the State of Indiana (herein called the 
"Company"), having its principal office at 1000 East Main Street, 
Plainfield, Indiana 46168, and The Fifth Third Bank, an Ohio 
banking corporation, as Trustee (herein called the "Trustee") 
under the Indenture dated as of November 15, 1996 between the 
Company and the Trustee (the "Indenture").


	Recitals of the Company


	The Company has executed and delivered the Indenture to the 
Trustee to provide for the issuance from time to time of its 
unsecured debentures, notes or other evidences of indebtedness 
(the "Securities"), to be issued in one or more series as in the 
Indenture provided.

	Pursuant to the terms of the Indenture, the Company desires 
to provide for the establishment of a new series of its Securities 
to be known as its 6.25% Notes Due 2005 (herein called the 
"Notes"), in this Second Supplemental Indenture.

	All things necessary to make this Second Supplemental 
Indenture a valid agreement of the Company have been done.

	Now, Therefore, This Second Supplemental Indenture 
Witnesseth:

	For and in consideration of the premises and the purchase of 
the Notes by the Holders thereof, it is mutually agreed, for the 
equal and proportionate benefit of all Holders of the Notes, as 
follows:


	ARTICLE ONE

	Terms of the Notes

	Section 101.  There is hereby authorized a series of 
Securities designated the "6.25% Notes Due 2005", limited in 
aggregate principal amount to $50,000,000 (except as provided in 
Section 301(2) of the Indenture).  Subject to the provisions in 
Section 110 hereof, the Notes shall mature and the principal shall 
be due and payable together with all accrued and unpaid interest 
thereon on December 15, 2005 and initially shall be issued in 
certificated form registered to the holder thereof.

	Section 102.  Upon the request of holders of not less than 
66-2/3% in aggregate principal amount of the Notes, the Notes will 
be represented by one or more Global Securities deposited with, or 
on behalf of, The Depository Trust Company ("DTC").  The 
provisions of Section 305 of the Indenture applicable to Global 
Securities shall then apply to the Notes.

	Section 103.  Interest on each of the Notes shall be payable 
semi-annually on December 15 and June 15 in each year (each an 
"Interest Payment Date"), commencing on June 15, 1997, at the rate 
per annum specified in the designation of the Notes from 
December 15, 1996, or from the most recent Interest Payment Date 
to which interest has been paid or duly provided for, until 
December 15, 1998.  The interest rate on the Notes will be reset 
as provided in Section 106 hereof effective from December 15, 1998 
until the principal amount of each Note is paid or made available 
for payment.  The interest so payable, and punctually paid or duly 
provided for, on any Interest Payment Date will be paid to the 
Person in whose name such Note (or one or more Predecessor 
Securities) is registered at the close of business on the Regular 
Record Date for such interest, which shall be the day (whether or 
not a Business Day), as the case may be, immediately preceding 
such Interest Payment Date.  The amount of interest payable for 
any period will be computed on the basis of a 360-day year of 
twelve 30-day months.

	Section 104.  Subject to agreements with or the rules of DTC 
or any successor book-entry security system or similar system with 
respect to Global Securities, payments of interest will be made by 
wire transfer or by check mailed to the Holder of each Note at the 
address shown in the Security Register, and payments of the 
principal amount of each Note will be made at maturity by wire 
transfer or by check against presentation of the Note at the 
office or agency of the Trustee.

	Section 105.  The Notes shall be issued in denominations of 
$100,000 or any integral multiple of $100,000.

	Section 106.  The interest rate on the Notes shall be reset, 
effective from December 15, 1998, as provided in the Calculation 
Agency Agreement, dated as of December 20, 1996, among the 
Company, UBS Securities LLC, a limited liability company organized 
under the laws of the State of New York and Union Bank of 
Switzerland, London branch, which is incorporated herein by this 
reference.  

	Section 107.  Principal and interest on the Notes shall be 
payable in the coin or currency of the United States of America, 
which, at the time of payment, is legal tender for public and 
private debts.

	Section 108.  The Notes shall be subject to defeasance, at 
the Company's option, as provided for in Section 1302 of the 
Indenture.

	Section 109.  The Notes will not be redeemable at the option 
of the Company prior to maturity and will not be subject to any 
sinking fund, (it being understood, however, that the Company, in 
connection with the issuance of the Notes, has purchased from 
Union Bank of Switzerland, London branch, a call option, dated 
December 20, 1996, pursuant to which the Company, under terms as 
stated therein, can repurchase the Notes).  

	Section 110.  Each Holder shall have the right, at such 
Holder's option, exercisable on December 15, 1998, to require the 
Company to redeem, and upon the exercise of such right in the 
manner set forth hereinafter, the Company shall redeem in whole, 
but not in part, all of such Holder's Notes on December 15, 1998 
(the "Redemption Date") at a redemption price in cash equal to 
100% of the principal amount of such Note (the "Redemption 
Price"), together with accrued and unpaid interest to the 
Redemption Date.

	To exercise a redemption right, a Holder of the Notes shall 
deliver at least one day but not more than 15 days prior to the 
Redemption Date (i) to the Company and to the Trustee irrevocable 
written notice of the Holder's election to exercise such right 
(the "Holder's Notice") which shall set forth the name of the 
Holder and a statement that an election to exercise the redemption 
right is being made thereby, and (ii) to the Trustee the Notes 
with respect to which the redemption right is being exercised, 
duly endorsed for transfer to the Company if required by the 
Trustee or the Company.  The Notes held by a securities depositary 
may be delivered in such other manner as may be agreed to by such 
securities depositary, the Company and the Trustee.  Such written 
notice shall be irrevocable.  The Notes as to which the redemption 
right has been so exercised shall, on the Redemption Date, become 
due and payable at the Redemption Price, together with accrued and 
unpaid interest to the Redemption Date.

	On or before the Redemption Date, the Company shall deposit 
with the Trustee an amount of money sufficient to pay the 
Redemption Price of, and (except if the Redemption Date shall be 
an Interest Payment Date) accrued interest on, all the Notes which 
are to be redeemed on that date.

	If any Notes surrendered for redemption shall not be so paid 
on the Redemption Date, such Note shall, until paid, continue to 
bear interest from the Redemption Date at the same rate as the 
rate borne by such Note.  The Company shall pay to the Holder of 
such Note the additional amounts of interest arising from this 
paragraph at the same time that it pays the Redemption Price.


	ARTICLE TWO

	Form of the Notes

	Section 201.  The Notes are to be substantially in the 
following form and all certificates evidencing Notes initially 
issued hereunder shall bear legends as specified in this Section 
201 to be applied to such Notes, and any such required legend, or 
part thereof, shall not be removed unless the Company shall have 
delivered to the Trustee written notice that the certificates 
evidencing the Notes may be issued without such legend, or part 
thereof, as the case may be If a legend has been removed from a 
certificate evidencing a Note as provided above, no other 
certificates evidencing any Note issued in exchange for all or any 
part of such Note shall bear such legend, unless the Company has 
reasonable cause to believe that such legend, or any part thereof, 
is required by law to be applied to such other Note and instructs 
the Trustee in writing to cause such legend, or part thereof, as 
the case may be, to appear thereon.


	(FORM OF FACE OF NOTE)

No. R-l	$50,000,000

CUSIP No. 693627AC5

	PSI ENERGY, INC.


	6.25% NOTE DUE 2005


[Upon the issuance of any global security pursuant to Section 102 
hereof, insert -- 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 OWNER HEREOF, CEDE & CO., HAS 
AN INTEREST HEREIN.]

	THE NOTES HAVE NOT BEEN REGISTERED UNDER THE SECURITIES ACT 
OF 1933, AS AMENDED (THE "SECURITIES ACT") OR ANY STATE SECURITIES 
LAWS, NEITHER THIS NOTE NOR ANY INTEREST OR PARTICIPATION HEREIN 
MAY BE REOFFERED, SOLD, ASSIGNED, TRANSFERRED, PLEDGED, ENCUMBERED 
OR OTHERWISE DISPOSED OF IN THE ABSENCE OF SUCH REGISTRATION OR 
UNLESS SUCH TRANSACTION IS EXEMPT FROM, OR NOT SUBJECT TO, 
REGISTRATION.

	THE HOLDER OF THIS NOTE BY ITS ACCEPTANCE HEREOF AGREES TO 
OFFER, SELL OR OTHERWISE TRANSFER SUCH NOTE, PRIOR TO THE DATE 
(THE "RESALE RESTRICTION TERMINATION DATE") WHICH IS THREE YEARS 
AFTER THE LATER OF THE ORIGINAL ISSUE DATE HEREOF AND THE LAST 
DATE ON WHICH THE COMPANY OR ANY AFFILIATE OF THE COMPANY WAS THE 
OWNER OF THIS NOTE (OR ANY PREDECESSOR OF SUCH NOTE), ONLY (A) TO 
THE COMPANY, (B) PURSUANT TO A REGISTRATION STATEMENT WHICH HAS 
BEEN DECLARED EFFECTIVE UNDER THE SECURITIES ACT, (C) FOR SO LONG 
AS THE NOTES ARE ELIGIBLE FOR RESALE PURSUANT TO RULE 144A, TO A 
PERSON IT REASONABLY BELIEVES IS A "QUALIFIED INSTITUTIONAL BUYER" 
AS DEFINED IN RULE 144A UNDER THE SECURITIES ACT THAT PURCHASES 
FOR ITS OWN ACCOUNT OR FOR THE ACCOUNT OF A QUALIFIED 
INSTITUTIONAL BUYER TO WHOM NOTICE IS GIVEN THAT THE TRANSFER IS 
BEING MADE IN RELIANCE ON RULE 144A, (D) PURSUANT TO OFFERS AND 
SALES THAT OCCUR OUTSIDE THE UNITED STATES WITHIN THE MEANING OF 
REGULATION S UNDER THE SECURITIES ACT UPON THE DELIVERY OF AN 
OPINION OF COUNSEL, CERTIFICATION AND/OR OTHER INFORMATION 
SATISFACTORY TO THE TRUSTEE AND THE COMPANY, OR (E) PURSUANT TO 
ANOTHER AVAILABLE EXEMPTION FROM THE REGISTRATION REQUIREMENTS OF 
THE SECURITIES ACT UPON THE DELIVERY OF AN OPINION OF COUNSEL, 
CERTIFICATION AND/OR OTHER INFORMATION SATISFACTORY TO THE TRUSTEE 
AND THE COMPANY, SUBJECT IN EACH OF THE FOREGOING CASES, TO A 
CERTIFICATE OF TRANSFER IN THE FORM APPEARING ON THE OTHER SIDE OF 
THIS NOTE BEING COMPLETED AND DELIVERED BY THE TRANSFEROR TO THE 
TRUSTEE.  THIS LEGEND WILL BE REMOVED UPON THE REQUEST OF THE 
HOLDER AFTER THE RESALE RESTRICTION TERMINATION DATE.

	THIS NOTE IS SUBJECT TO DEPARTMENT OF TREASURY REGULATIONS 
SECTION 1.1275-4(b) (THE "CONTINGENT PAYMENT REGULATIONS") AND IS 
THEREFORE ISSUED WITH ORIGINAL ISSUE DISCOUNT.  THE ISSUE PRICE OF 
THE NOTE IS $50,701,500, AND THE ISSUE DATE OF THE NOTE IS 
DECEMBER 20, 1996.  THE AMOUNT OF ORIGINAL ISSUE DISCOUNT IS 
$27,668,500.  THE YIELD TO MATURITY OF THE NOTE AND THE COMPARABLE 
YIELD PURSUANT TO THE CONTINGENT PAYMENT REGULATIONS ARE 6.096%.  
THE PROJECTED PAYMENT SCHEDULE PROVIDES FOR A NON-CONTINGENT 
PAYMENT OF $1,562,500 PER INTEREST ACCRUAL PERIOD PRIOR TO THE 
INTEREST RESET DATE AND A NON-CONTINGENT PAYMENT OF $1,580,000 AND 
A CONTINGENT PAYMENT OF $0 PER INTEREST ACCRUAL PERIOD THEREAFTER.

	PSI ENERGY, INC., a corporation duly organized and existing 
under the laws of the State of Indiana (herein called the 
"Company", which term includes any successor Person under the 
Indenture hereafter referred to), for value received, hereby 
promises to pay to ___________________________________, or 
registered assigns, the principal sum of Fifty Million and No/100 
Dollars ($50,000,000) on December 15, 2005, and to pay interest 
thereon from December 15, 1996 or from the most recent Interest 
Payment Date to which interest has been paid or duly provided for, 
semi-annually on December 15 and June 15 in each year, commencing 
June 15, 1997, at the rate of 6.25% per annum, until December 15, 
1998.  The interest rate on the Notes will be reset as provided in 
the Indenture, effective from December 15, 1998 until the 
principal hereof is paid or made available for payment.  The 
amount of interest payable on any Interest Payment Date shall be 
computed on the basis of a 360-day year of twelve 30-day months.  
The interest so payable, and punctually paid or duly provided for, 
on any Interest Payment Date will, as provided in the Indenture, 
be paid to the Person in whose name this Security (or one or more 
Predecessor Securities) is registered at the close of business on 
the Regular Record Date for such interest, which shall be the day 
(whether or not a Business Day), as the case may be, next 
preceding such Interest Payment Date.  Any such interest not so 
punctually paid or duly provided for will forthwith cease to be 
payable to the Holder on such Regular Record Date and may either 
be paid to the Person in whose name this Security (or one or more 
Predecessor Securities) is registered at the close of business on 
a Special Record Date for the payment of such Defaulted Interest 
to be fixed by the Trustee, notice whereof shall be given to 
Holders of Securities of this series not less than 10 days prior 
to such Special Record Date, or be paid at any time in any other 
lawful manner not inconsistent with the requirements of any 
securities exchange on which the Securities of this series may be 
listed, and upon such notice as may be required by such exchange, 
all as more fully provided in the Indenture.

	Payment of the principal of (and premium, if any) and 
interest on this Security will be made at the office or agency of 
the Company maintained for that purpose in the City of Cincinnati, 
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; provided, however, that at the option of the Company 
payment of interest may be made by wire transfer or by check 
mailed to the address of the Person entitled thereto as such 
address shall appear in the Security Register.

	Any payment on this Security due on any day which is not a 
Business Day in the City of New York need not be made on such day, 
but may be made on the next succeeding Business Day with the same 
force and effect as if made on the due date and no interest shall 
accrue for the period from and after such date.

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

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

	In Witness Whereof, the Company has caused this instrument to 
be duly executed.

							PSI ENERGY INC.



							By	

CERTIFICATE OF AUTHENTICATION

Dated:

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

	THE FIFTH THIRD BANK,
	as Trustee


	By                             
	Authorized Signatory


	(FORM OF REVERSE OF NOTE)


This Security is one of a duly authorized issue of securities of 
the Company (herein called the "Securities"), issued and to be 
issued in one or more series under an Indenture, dated as of 
November 15, 1996 as supplemented by the second supplement to the 
Indenture dated December 15, 1996 (herein called the "Indenture", 
which term shall have the meaning assigned to it in such 
instrument, as supplemented), between the Company and The Fifth 
Third Bank, as Trustee (herein called the "Trustee", which term 
includes any successor trustee under the Indenture), and reference 
is hereby made to the Indenture for a statement of the respective 
rights, limitations of rights, duties and immunities thereunder of 
the Company, the Trustee and the Holders of the Securities and of 
the terms upon which the Securities are, and are to be, 
authenticated and delivered.  This Security is one of the series 
designated on the face hereof, limited in aggregate principal 
amount to $50,000,000.  

The Securities will not be redeemable at the option of the Company 
prior to maturity and will not be subject to any sinking fund, (it 
being understood, however, that the Company, in connection with 
the issuance of the Notes, has purchased from Union Bank of 
Switzerland, London branch, a call option, dated December 20, 
1996, pursuant to which the Company, under terms as stated 
therein, can repurchase the Notes).  

The Holder of this Security shall have the right, at such Holder's 
option, exercisable on December 15, 1998, to require the Company 
to redeem, and upon the exercise of such right in the manner set 
forth hereinafter, the Company shall redeem in whole, but not in 
part, the principal amount of this Security on December 15, 1998 
(the "Redemption Date") at a redemption price in cash equal to 
100% of the principal amount of this Security (the "Redemption 
Price"), together with accrued and unpaid interest to the 
Redemption Date.  To exercise this redemption right, the Holder 
hereof shall deliver at least one day but not more than 15 days 
prior to the Redemption Date (i) to the Company and to the Trustee 
irrevocable written notice of the Holder's election to exercise 
such right (the "Holder's Notice") which shall set forth the name 
of the Holder and a statement that an election to exercise the 
redemption right is being made thereby and (ii) to the Trustee 
this Security duly endorsed for transfer to the Company if 
required by the Trustee or the Company.  Securities held by a 
securities depositary may be delivered in such other manner as may 
be agreed to by such securities depositary, the Company and the 
Trustee.  Such written notice shall be irrevocable.  If this 
Security is so surrendered for redemption it shall, on the 
Redemption Date, become due and payable at the Redemption Price, 
together with accrued and unpaid interest to the Redemption Date.

The Indenture contains provisions for defeasance at any time of 
the entire indebtedness of this Security upon compliance with 
certain conditions set forth in the Indenture.

If an Event of Default with respect to Securities of this series 
shall occur and be continuing, the principal of the Securities of 
this series may be declared due and payable in the manner 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 the rights of the Holders of 
the Securities of each series to be affected under the Indenture 
at any time by the Company and the Trustee with the consent of the 
Holders of a majority in principal amount of the Securities at the 
time Outstanding of each series to be affected.  The Indenture 
also contains provisions permitting the Holders of a majority in 
principal amount of the Securities of each series at the time 
Outstanding, on behalf of the Holders of all Securities of such 
series, to waive compliance by the 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 Security shall be conclusive and binding upon such Holder and 
upon all future Holders of this Security and of any Security 
issued upon the registration of transfer hereof or in exchange 
herefor or in lieu hereof, whether or not notation of such consent 
or waiver is made upon this Security.

As provided in and subject to the provisions of the Indenture, the 
Holder of this Security shall not have the right to institute any 
proceeding with respect to the Indenture or for the appointment of 
a receiver or trustee or for any other remedy thereunder, unless 
such Holder shall have previously given the Trustee written notice 
of a continuing Event of Default with respect to the Securities of 
this series, the Holders of not less than 35% in principal amount 
of the Securities of this series at the time Outstanding shall 
have made written request to the Trustee to institute proceedings 
in respect of such Event of Default as Trustee and offered the 
Trustee reasonably satisfactory indemnity, and the Trustee shall 
not have received from the Holders of a majority in principal 
amount of Securities of this series at the time Outstanding a 
direction inconsistent with such request, and shall have failed to 
institute any such proceeding, for 60 days after receipt of such 
notice, request and offer of indemnity.  The foregoing shall not 
apply to any suit instituted by the Holder of this Security for 
the enforcement of any payment of principal hereof or any premium 
or interest hereon on or after the respective due dates expressed 
herein.

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

As provided in the Indenture and subject to certain limitations 
therein set forth, the transfer of this Security is registrable in 
the Security Register, upon surrender of this Security for 
registration of transfer at the office or agency of the Company in 
any place where the principal of and any premium and interest on 
this Security are payable, duly endorsed by, or accompanied by a 
written instrument of transfer in form satisfactory to the Company 
and the Security Registrar duly executed by, the Holder hereof or 
his attorney duly authorized in writing, and thereupon one or more 
new Securities of this series and of like tenor, of authorized 
denominations and for the same aggregate principal amount, will be 
issued to the designated transferee or transferees.

The Securities of this series are issuable only in registered form 
without coupons in denominations of $100,000 and any integral 
multiple thereof.  As provided in the Indenture and subject to 
certain limitations therein set forth, Securities of this series 
are exchangeable for a like aggregate principal amount of 
Securities of this series and of like tenor 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 tax or other governmental charge payable 
in connection therewith.

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

All terms used in this Security which are defined in the Indenture 
shall have the meanings assigned to them in the Indenture.


	ARTICLE THREE

	Original Issue of Notes

	Section 301.  Notes in the aggregate principal amount of 
$50,000,000, may, upon execution of this Second Supplemental 
Indenture, or from time to time thereafter, be executed by the 
Company and delivered to the Trustee for authentication, and the 
Trustee shall thereupon authenticate and deliver said Notes upon a 
Company Order without any further action by the Company.


	ARTICLE FOUR

	Paying Agent and Security Registrar

	Section 401.  The Fifth Third Bank will be the Paying Agent 
and Security Registrar for the Notes.


	ARTICLE FIVE

	Sundry Provisions

	Section 501.  Except as otherwise expressly provided in this 
Second Supplemental Indenture or in the form of Note or otherwise 
clearly required by the context hereof or thereof, all terms used 
herein or in said form of Note that are defined in the Indenture 
shall have the several meanings respectively assigned to them 
thereby.

	Section 502.  The Indenture, as supplemented by this Second 
Supplemental Indenture, is in all respects ratified and confirmed, 
and this Second Supplemental Indenture shall be deemed part of the 
Indenture in the manner and to the extent herein and therein 
provided.



	                          

	This instrument may be executed in any number of 
counterparts, each of which so executed shall be deemed to be an 
original, but all such counterparts shall together constitute but 
one and the same instrument.


	In Witness Whereof, the parties hereto have caused this 
Second Supplemental Indenture to be duly executed, all as of the 
day and year first above written.

							PSI ENERGY, INC.



							By /s/ William L. Sheafer
							     William L. Sheafer
							         Treasurer




						
	THE FIFTH THIRD BANK, as 
Trustee



							By /s/ Kerry R. Byrne
							     Kerry R. Byrne
							     Vice President



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