Document:

Form of Forty-First Supplemental Indenture

 Exhibit 4.1 
  
  
  
 WESTAR ENERGY, INC. 
 TO

 THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A. 
 as Trustee 
 (as Successor to 
 HARRIS TRUST AND SAVINGS BANK) 
  
  
 FORTY-FIRST SUPPLEMENTAL
INDENTURE 
 Dated as of November 25, 2008 
 First Mortgage Bonds, 8.625% Series due 2018 
  
  
  

 TABLE OF CONTENTS 
  
  
  

			
	 Parties
	  	1
	 Recitals
	  	1
	 Granting Clause
	  	4
	 Habendum
	  	6
	 Exceptions and Reservations
	  	6

  

					
	 	 	 	  	PAGE
		 	ARTICLE I	  	
		 	DESCRIPTION OF BONDS OF THE 2018 SERIES	  	
			
	 Section 1.
	 	General Description of Bonds of the 2018 Series	  	7
	 Section 2.
	 	Denominations of Bonds of the 2018 Series and Privilege of Exchange	  	8
	 Section 3.
	 	Form of Bonds of the 2018 Series	  	8
	 Section 4.
	 	Execution and Form of Temporary Bonds of the 2018 Series	  	17
			
		 	ARTICLE II	  	
		 	ISSUE OF BONDS OF THE 2018 SERIES	  	
			
	 Section 1.
	 	Limitation as to Principal Amount of Bonds of the 2018 Series	  	17
	 Section 2.
	 	Execution and Delivery of Bonds of the 2018 Series	  	17
			
		 	ARTICLE III	  	
		 	REDEMPTION AND SUBSTITUTION OF BONDS OF THE 2018 SERIES
	  	
			
	 Section 1.
	 	Optional Redemption of Bonds of the 2018 Series	  	17
	 Section 2.
	 	Substitution of Bonds of the 2018 Series	  	19
			
		 	ARTICLE IV	  	
		 	ADDITIONAL COVENANTS	  	
			
	 Section 1.
	 	Title to Mortgaged Property	  	21
	 Section 2.
	 	To Retire Certain Portions of Bonds upon Release of All or Substantially All of the Electric Properties	  	21
			
		 	ARTICLE V	  	
		 	AMENDMENTS AND RESERVATIONS OF RIGHTS TO AMEND THE
ORIGINAL INDENTURE	  	
			
	 Section 1.
	 	So Long as Bonds Issued Prior to January 1, 1997 Remain Outstanding	  	22
	 Section 2.
	 	Facsimile Signatures	  	25

					
	 Section 3.
	 	Reservation of Right to Amend Article VII	  	26
	 Section 4.
	 	Reservation of Right to Delete Certain Requirements and Conditions	  	29
	 Section 5.
	 	Issuance of Variable Rate Bonds	  	29
	 Section 6.
	 	Substitution of Bonds	  	29
	 Section 7.
	 	Addition of a Governing Law Clause	  	30
	 Section 8.
	 	Event of Default for Failure to Pay Final Judgments in Excess of $100,000	  	30
	 Section 9.
	 	Net Earnings Test in Connection with Property Acquisitions	  	31
	 Section 10.
	 	Addition of Nuclear Fuel	  	31
	 Section 11.
	 	Modernization of the Original Indenture	  	32
			
		 	ARTICLE VI	  	
		 	MISCELLANEOUS PROVISIONS	  	
			
	 Section 1.
	 	Acceptance of Trust	  	33
	 Section 2.
	 	Responsibility and Duty of Trustee	  	33
	 Section 3.
	 	Parties to Include Successors and Assigns	  	33
	 Section 4.
	 	Benefits Restricted to Parties and to Holders of Bonds and Coupons	  	33
	 Section 5.
	 	Execution in Counterparts	  	33
	 Section 6.
	 	Titles of Articles Not Part of the Forty-First Supplemental Indenture	  	34
		
	 TESTIMONIUM
	  	S-1
	 SIGNATURES AND SEALS
	  	S-1
	 ACKNOWLEDGEMENTS
	  	S-2

 APPENDIX A 
 DESCRIPTION OF PROPERTIES 
  

 ii 

 FORTY-FIRST SUPPLEMENTAL INDENTURE, dated as of the 25th day of November, Two Thousand and Eight, made by
and between Westar Energy, Inc., formerly The Kansas Power and Light Company, a corporation organized and existing under the laws of the State of Kansas (hereinafter called the “Company”), party of the first part, and The Bank of
New York Mellon Trust Company, N.A., a national banking association whose mailing address is 2 North La Salle Street, Chicago, Illinois 60602 (hereinafter called the “Trustee”), as Trustee (as successor to Harris Trust and Savings
Bank), under the Mortgage and Deed of Trust dated July 1, 1939, hereinafter mentioned, party of the second part; 
 WHEREAS, the Company
has heretofore executed and delivered to the Trustee its Mortgage and Deed of Trust dated July 1, 1939 (hereinafter referred to as the “Original Indenture”), to provide for and to secure the issue of First Mortgage Bonds of the
Company, issuable in series, and to declare the terms and conditions upon which the Bonds (as defined in the Original Indenture) are to be issued thereunder; and 
 WHEREAS, the Company has heretofore executed and delivered to the Trustee Forty Supplemental Indentures supplemental to said Original Indenture, of which Thirty-Seven provided for the issuance thereunder of series of
the Company’s First Mortgage Bonds, and there is set forth below information with respect to such Supplemental Indentures as have provided for the issuance of Bonds, and the principal amount of Bonds which remain outstanding as of
November 25, 2008. 
  

										
	 Supplemental
 Indenture
	  	Date	  	Series of
First Mortgage Bonds
Provided For	  	Principal
Amount
Issued	  	Principal
Amount
Outstanding
	 Supplemental Indenture
	  	July 1, 1939	  	3- 1/2% Series
Due 1969	  	$	26,500,000	  	None
	 Second Supplemental Indenture
	  	April 1, 1949	  	2- 7/8% Series
Due 1979	  	 	10,000,000	  	None
	 Fourth Supplemental Indenture
	  	October 1, 1949	  	2- 3/4% Series
Due 1979	  	 	6,500,000	  	None
	 Fifth Supplemental Indenture
	  	December 1, 1949	  	2- 3/4% Series
Due 1984	  	 	32,500,000	  	None
	 Seventh Supplemental Indenture
	  	December 1, 1951	  	3- 1/4% Series
Due 1981	  	 	5,250,000	  	None
	 Eighth Supplemental Indenture
	  	May 1, 1952	  	3- 1/4% Series
Due 1982	  	 	4,750,000	  	None
	 Ninth Supplemental Indenture
	  	October 1, 1954	  	3- 1/8% Series
Due 1984	  	 	8,000,000	  	None
	 Tenth Supplemental Indenture
	  	September 1, 1961	  	4- 3/4% Series
Due 1991	  	 	13,000,000	  	None

									
	 Supplemental
 Indenture
	  	Date	  	Series of
First Mortgage Bonds
Provided For	  	Principal
Amount
Issued	  	Principal
Amount
Outstanding
	 Eleventh Supplemental Indenture
	  	April 1, 1969	  	7- 5/8% Series
Due 1999	  	19,000,000	  	None
	 Twelfth Supplemental Indenture
	  	September 1, 1970	  	8- 3/4% Series
Due 2000	  	20,000,000	  	None
	 Thirteenth Supplemental Indenture
	  	February 1, 1975	  	8- 5/8% Series
 Due 2005
	  	35,000,000	  	None
	 Fourteenth Supplemental Indenture
	  	May 1, 1976	  	8- 5/8% Series
Due 2006	  	45,000,000	  	None
	 Fifteenth Supplemental Indenture
	  	April 1, 1977	  	5.90% Pollution
Control Series
Due 2007	  	32,000,000	  	None
	 Sixteenth Supplemental Indenture
	  	June 1, 1977	  	8- 1/8% Series
Due 2007	  	30,000,000	  	None
	 Seventeenth Supplemental Indenture
	  	February 1, 1978	  	8- 3/4% Series
Due 2008	  	35,000,000	  	None
	 Eighteenth Supplemental Indenture
	  	January 1, 1979	  	6- 3/4% Pollution
Control Series
Due 2009	  	45,000,000	  	None
	 Nineteenth Supplemental Indenture
	  	May 1, 1980	  	8- 1/4% Pollution
Control Series
Due 1983	  	45,000,000	  	None
	 Twentieth Supplemental Indenture
	  	November 1, 1981	  	16.95% Series
Due 1988	  	25,000,000	  	None
	 Twenty-First Supplemental Indenture
	  	April 1, 1982	  	15% Series Due 1992	  	60,000,000	  	None
	 Twenty-Second Supplemental Indenture
	  	February 1, 1983	  	9- 5/8% Pollution
Control Series
Due 2013	  	58,500,000	  	None
	 Twenty-Third Supplemental Indenture
	  	July 1, 1986	  	8- 1/4% Series
Due 1996	  	60,000,000	  	None
	 Twenty-Fourth Supplemental Indenture
	  	March 1, 1987	  	8- 5/8% Series
Due 2020	  	50,000,000	  	None
	 Twenty-Fifth Supplemental Indenture
	  	October 15, 1988	  	9.35% Series
Due 1998	  	75,000,000	  	None
	 Twenty-Sixth Supplemental Indenture
	  	February 15, 1990	  	8- 7/8% Series
Due 2000	  	75,000,000	  	None
	 Twenty-Seventh Supplemental Indenture
	  	March 12, 1992	  	7.46% Demand Series	  	370,000,000	  	None
	 Twenty-Eighth Supplemental Indenture
	  	July 1, 1992	  	7- 1/4% Series
Due 1999	  	125,000,000	  	None

  

 2 

									
	 Supplemental
 Indenture
	  	Date	  	Series of
First Mortgage Bonds
Provided For	  	Principal
Amount
Issued	  	Principal
Amount
Outstanding
		  		  	8- 1/2% Series
Due 2022	  	125,000,000	  	None
	 Twenty-Ninth Supplemental Indenture
	  	August 20, 1992	  	7- 1/4% Series
Due 2002	  	100,000,000	  	None
	 Thirtieth Supplemental Indenture
	  	February 1, 1993	  	6% Pollution Control
Revenue Refunding
Series Due 2033	  	58,500,000	  	None
	 Thirty-First Supplemental Indenture
	  	April 15, 1993	  	7.65% Series
Due 2023	  	100,000,000	  	None
	 Thirty-Second Supplemental Indenture
	  	April 15, 1994	  	7- 1/2% Series
Pollution Control
Revenue Refunding
Due 2032	  	75,500,000	  	75,500,000
	 Thirty-Third Supplemental Indenture
	  	August 11, 1997	  	6- 7/8% Convertible
Series Due 2004
	  	370,000,000	  	None
		  		  	7- 1/8% Convertible
Series Due 2009
	  	150,000,000	  	None
	 Thirty-Fourth Supplemental Indenture
	  	June 28, 2000	  	9- 1/2% Series
Due 2003	  	397,800,000	  	None
	 Thirty-Fifth Supplemental Indenture
	  	May 10, 2002	  	7- 7/8% Series
Due 2007	  	365,000,000	  	None
	 Thirty-Sixth Supplemental Indenture
	  	June 1, 2004	  	5.00% Series
Pollution Control
Refunding Revenue
Due 2033	  	58,340,000	  	58,215,000
	 Thirty-Seventh Supplemental Indenture
	  	June 17, 2004	  	6.00% Series
Due 2014	  	250,000,000	  	250,000,000
	 Thirty-Eighth Supplemental Indenture
	  	January 18, 2005	  	5.15% Series
Due 2017	  	125,000,000	  	125,000,000
		  		  	5.95% Series
Due 2035	  	125,000,000	  	125,000,000
	 Thirty-Ninth Supplemental Indenture
	  	June 30, 2005	  	5.10% Series
Due 2020	  	250,000,000	  	250,000,000
		  		  	5.875% Series
Due 2036	  	150,000,000	  	150,000,000
	 Fortieth Supplemental Indenture
	  	May 15, 2007	  	6.10% Series
Due 2047	  	150,000,000	  	150,000,000

  

 3 

 ; and 
 WHEREAS, the Company is entitled at this time to have authenticated and delivered additional bonds in substitution for refundable Bonds, upon compliance with the provisions of Article III of the Original Indenture, as amended; and

 WHEREAS, the Company desires by this Forty-First Supplemental Indenture (hereinafter referred to as this “Supplemental
Indenture”) to supplement the Original Indenture and to provide for the creation of a new series of bonds under the Original Indenture to be designated “First Mortgage Bonds, 8.625% Series due 2018” (hereinafter called
“Bonds of the 2018 Series”); and the Original Indenture provides that certain terms and provisions, as determined by the Board of Directors of the Company, of the Bonds of any particular series may be expressed in and provided by
the execution of an appropriate supplemental indenture; and 
 WHEREAS, the Company in the exercise of the powers and authority conferred
upon and reserved to it under the provisions of the Original Indenture and indentures supplemental thereto, and pursuant to appropriate resolutions of its Board of Directors, has duly resolved and determined to make, execute and deliver to the
Trustee a supplemental indenture in the form hereof for the purposes herein provided; and 
 WHEREAS, all conditions and requirements
necessary to make this 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, THIS INDENTURE WITNESSETH: That, in consideration of the premises and of the mutual covenants herein contained and of the sum of One
Dollar duly paid by the Trustee to the Company at or before the time of the execution of these presents, and of other valuable considerations, the receipt whereof is hereby acknowledged, and in order further to secure the payment of the principal of
and interest and premium, if any, on all Bonds at any time issued and outstanding under the Original Indenture as amended by all indentures supplemental thereto (hereinafter sometimes collectively called the “Indenture”) according
to their tenor, purport and effect, and to declare certain terms and conditions upon and subject to which Bonds are to be issued and secured, the Company has executed and delivered this Supplemental Indenture, and by these presents grants, bargains,
sells, warrants, aliens, releases, conveys, assigns, transfers, mortgages, pledges, sets over and ratifies and confirms unto The Bank of New York Mellon Trust Company, N.A., as Trustee, and to its successors in trust under the Indenture forever, all
and singular the following described properties (in addition to all other properties heretofore specifically subjected to the lien of the Indenture and not heretofore released from the lien thereof), that is to say: 
  

 4 

 FIRST. 
 All and singular the rents, real estate, chattels real, easements, servitudes, and leaseholds of the Company, or which, subject to the provisions of Article XII of the Original Indenture, the Company may hereafter
acquire, including, among other things, the existing property described in Appendix A hereto under the caption “First,” which description is hereby incorporated herein by reference and made a part hereof as if fully set forth herein,
together with all improvements of any type located thereon. 
 Also all power houses, plants, buildings and other structures, dams, dam
sites, substations, heating plants, gas works, holders and tanks, compressor stations, gasoline extraction plants, together with all and singular the electric heating, gas and mechanical appliances appurtenant thereto of every nature whatsoever, now
owned by the Company or which it may hereafter acquire, including all and singular the machinery, engines, boilers, furnaces, generators, dynamos, turbines and motors, and all and every character of mechanical appliance for generating or producing
electricity, steam, water, gas and other agencies for light, heat, cold or power or any other purpose whatsoever. 
 SECOND.

 Also all transmission and distribution systems used for the transmission and distribution of electricity, steam, water, gas and other
agencies for light, heat, cold or power, or any other purpose whatever, whether underground or overhead or on the surface or otherwise of the Company, or which, subject to the provisions of Article XII of the Original Indenture, the Company may
hereafter acquire, including all poles, posts, wires, cables, conduits, mains, pipes, tubes, drains, furnaces, switchboards, transformers, insulators, meters, lamps, fuses, junction boxes, water pumping stations, regulator stations, town border
metering stations and other electric, steam, water and gas fixtures and apparatus. 
 THIRD. 
 Also all franchises and all permits, ordinances, easements, privileges and immunities and licenses, all rights to construct, maintain and operate
overhead, surface and underground systems for the distribution and transmission of electricity, gas, water or steam for the supply to itself or others of light, heat, cold or power or any other purpose whatsoever, all rights-of-way, all waters,
water rights and flowage rights and all grants and consents, now owned by the Company or, subject to the provisions of Article XII of the Original Indenture, which it may hereafter acquire. 
  

 5 

 Also all inventions, patent rights and licenses of every kind now owned by the Company or, subject to the
provisions of Article XII of the Original Indenture, which it may hereafter acquire. 
 FOURTH. 
 Also, subject to the provisions of Article XII of the Original Indenture, all other property, real, personal and mixed (except as therein or herein
expressly excepted) of every nature and kind and wheresoever situated now or hereafter possessed by or belonging to the Company, or to which it is now, or may at any time hereafter be, in any manner entitled at law or in equity. 
 FIFTH. 
 Also any and all property of
any kind or description which may from time to time after the date of the Original Indenture by delivery or by writing of any kind be conveyed, mortgaged, pledged, assigned or transferred to the Trustee by the Company or by any person, copartnership
or corporation, with the consent of the Company or otherwise, and accepted by the Trustee, to be held as part of the mortgaged property; and the Trustee is hereby authorized to accept and receive any such property and any such conveyance, mortgage,
pledge, assignment and transfer, as and for additional security hereunder, and to hold and apply any and all such property subject to and in accordance with the terms and provisions upon which such conveyance, mortgage, pledge, assignment or
transfer shall be made. 
 SIXTH. 
 Together with all and singular, the tenements, hereditaments and appurtenances belonging or in any wise appertaining to the aforesaid property or any part thereof, with the reversion and reversions, remainder and remainders, tolls, rents,
revenues, issues, income, products and profits thereof, and all the estate, right, title, interest and claim whatsoever, at law and in equity, which the Company now has or may hereafter acquire in and to the aforesaid property and franchises and
every part and parcel thereof. 
 EXPRESSLY EXCEPTING AND EXCLUDING, HOWEVER, all properties of the character excepted from the lien of the
Original Indenture. 
 TO HAVE AND TO HOLD all said properties, real, personal and mixed, mortgaged, pledged and conveyed by the Company as
aforesaid, or intended so to be, unto the Trustee and its successors and assigns forever; 
 SUBJECT, HOWEVER, to the exceptions and
reservations hereinabove referred to, to existing leases other than leases which by their terms are subordinate to the lien of the Indenture, to existing liens upon rights-of-way for 

  

 6 

 
transmission or distribution line purposes, as defined in Article I of the Original Indenture; and any extensions thereof, and subject to existing easements
for streets, alleys, highways, rights-of-way and railroad purposes over, upon and across certain of the property herein before described and subject also to all the terms, conditions, agreements, covenants, exceptions and reservations expressed or
provided in the deeds or other instruments respectively under and by virtue of which the Company acquired the properties hereinabove described and to undetermined liens and charges, if any, incidental to construction or other existing permitted
liens as defined in Article I of the Original Indenture; 
 IN TRUST, NEVERTHELESS, upon the terms and trusts in the Original Indenture, and
the indentures supplemental thereto, including this Supplemental Indenture, set forth, for the equal and proportionate benefit and security of all present and future holders of the Bonds and coupons issued and to be issued thereunder, or any of
them, without preference of any of said Bonds and coupons of any particular series over the Bonds and coupons of any other series by reason of priority in the time of issue, sale or negotiation thereof, or by reason of the purpose of issue or
otherwise howsoever, except as otherwise provided in Section 2 of Article IV of the Original Indenture. 
 AND IT IS HEREBY COVENANTED,
DECLARED AND AGREED, by and between the parties hereto for the benefit of those who shall hold the Bonds and coupons, or any of them, to be issued under the Indenture as follows: 
 ARTICLE I 
 DESCRIPTION OF BONDS
OF THE 2018 SERIES 
 Section 1. General Description of Bonds of the 2018
Series. The Bonds of the 2018 Series to be executed, authenticated and delivered under and secured by the Original Indenture shall be designated as “First Mortgage Bonds, 8.625% Series due 2018” of the Company. The Bonds of the 2018
Series shall be executed, authenticated and delivered in accordance with the provisions of, and shall in all respects be subject to, all of the terms, conditions and covenants of the Indenture and subject to all the terms, conditions and covenants
of this Supplemental Indenture. 
 Bonds of the 2018 Series shall mature on December 1, 2018 and shall bear interest at the rate of
eight and five eighths percent (8.625%) per annum payable semi-annually on the first day of June and December in each year, commencing June 1, 2009. Every Bond of the 2018 Series shall be dated the date of authentication except that,
notwithstanding the provisions of Section 6 of Article II of the Original Indenture, if any Bond of the 2018 Series shall be authenticated at any time subsequent to the record date (as hereinafter in this Section defined) for any interest
payment date but prior to the day following such interest payment 

  

 7 

 
date, it shall be dated as of the day following such interest payment date, provided, however, if at the time of authentication of any Bond of
the 2018 Series interest shall be in default on any Bonds of the 2018 Series, such Bond shall be dated as of the day following the interest payment date to which interest has previously been paid in full or made available for payment in full on
outstanding Bonds of the 2018 Series, as the case may be, or, if no interest has been paid or made available for payment, as of the date of initial authentication and delivery of such Bond. Every Bond of the 2018 Series shall bear interest from the
June 1 or December 1 immediately preceding the date thereof, unless such Bond shall be dated prior to June 1, 2009, in which case it shall bear interest from November 25, 2008. 
 The person in whose name any Bond of the 2018 Series is registered at the close of business on any record date with regard to any interest payment date
shall be entitled to receive the interest payable thereon on such interest payment date notwithstanding the cancellation of such Bond upon the transfer or exchange thereof subsequent to such record date and prior to the day following such interest
payment date, unless the Company shall default in the payment of the interest due on such interest payment date, in which case such defaulted interest shall be paid to the person in whose name such Bond is registered on the date of payment of such
defaulted interest. The term “record date” as used in this Section with regard to any June 1 and December 1 interest payment date shall mean the close of business on the immediately preceding May 15 and
November 15, respectively, or if such day is not a business day, the business day immediately preceding such day. The Bonds of the 2018 Series shall be payable as to principal, premium, if any, and interest, in any coin or currency of the
United States of America which at the time of payment is legal tender for public and private debts, at the agency of the Company in the City of Chicago, Illinois, or at the option of the holder thereof at the agency of the Company in the Borough of
Manhattan, The City of New York, provided that at the option of the Company interest may be paid by check mailed to the holder at such holder’s registered address. 
 Section 2. Denominations of Bonds of the 2018 Series and Privilege of Exchange. The Bonds of the 2018 Series shall be registered
bonds without coupons of the denominations of $1,000 and of any multiples of $1,000, numbered consecutively from R-1. Bonds of the 2018 Series may each be interchanged for other Bonds within the same Series in authorized denominations and in the
same aggregate principal amounts, without charge, except for any tax or governmental charge imposed in connection with such interchange. 
 Section 3. Form of Bonds of the 2018 Series. The Bonds of the 2018 Series, and the Trustee’s Certificate with respect thereto, shall be substantially in the following forms, respectively: 
  

 8 

 [FORM OF LEGEND FOR GLOBAL SECURITY] 
 THIS SECURITY IS A GLOBAL SECURITY WITHIN THE MEANING OF THE INDENTURE HEREINAFTER REFERRED TO AND IS REGISTERED IN THE NAME OF A DEPOSITARY OR A NOMINEE THEREOF. THIS SECURITY MAY NOT BE EXCHANGED IN WHOLE OR IN PART
FOR A SECURITY REGISTERED, AND NO TRANSFER OF THIS SECURITY IN WHOLE OR IN PART MAY BE REGISTERED, IN THE NAME OF ANY PERSON OTHER THAN SUCH DEPOSITARY OR A NOMINEE THEREOF, EXCEPT IN THE LIMITED CIRCUMSTANCES DESCRIBED IN THE INDENTURE OR ANY
SUPPLEMENT THERETO. 
 UNLESS THIS SECURITY IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY TRUST COMPANY (55 WATER STREET, NEW YORK, NEW
YORK) TO THE ISSUER OR ITS AGENT FOR REGISTRATION OF TRANSFER, EXCHANGE OR PAYMENT AND ANY SECURITY ISSUED IS REGISTERED IN THE NAME OF CEDE & CO. OR SUCH OTHER NAME AS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY TRUST
COMPANY AND ANY PAYMENT HEREON IS MADE TO CEDE & CO., ANY TRANSFER, PLEDGE OR OTHER USE HEREOF FOR VALUE OR OTHERWISE BY A PERSON IS WRONGFUL SINCE THE REGISTERED OWNER HEREOF, CEDE & CO., HAS AN INTEREST HEREIN. 
 CUSIP 95709TAG5 
 WESTAR ENERGY, INC.

 (Incorporated under the laws of the State of Kansas) 
 FIRST MORTGAGE BOND, 8.625% SERIES DUE 2018 
 DUE DECEMBER 1, 2018 
  

					
	No. R-1	 		 	$

 WESTAR ENERGY, INC., a corporation organized and existing under the laws of the State of Kansas
(hereinafter called the “Company”, which term shall include any successor corporation as defined in the Indenture hereinafter referred to), for value received, hereby promises to pay to CEDE & CO. or registered assigns, on
the 1st day of December 2018, the sum of                      in 

  

 9 

 
any coin or currency of the United States of America which at the time of payment is legal tender for public and private debts, and to pay interest thereon
in like coin or currency from the first day of June and December immediately preceding the date of this Bond unless this Bond shall be dated prior to June 1, 2009, in which case from November 25, 2008 at the rate of eight and five eighths
percent (8.625%) per annum, payable semi-annually, on June 1 and December 1 of each year, commencing June 1, 2009, until maturity, or, if this Bond shall be duly called for redemption or submitted for repurchase, until the
redemption date or repurchase date, as the case may be, or, if the Company shall default in the payment of the principal or premium hereof, until the Company’s obligation with respect to the payment of such principal or premium shall be
discharged as provided in the Indenture hereinafter mentioned. The interest payable on any June 1 or December 1 interest payment date as aforesaid will be paid to the person in whose name this Bond is registered at the close of business on
the immediately preceding May 15 and November 15, respectively, or if such day is not a business day, the business day immediately preceding such day (the “record date”), unless the Company shall default in the payment of
the interest due on such interest payment date, in which case such defaulted interest shall be paid to the person in whose name this Bond is registered on the date of payment of such defaulted interest. Principal of, premium, if any, and interest
on, this Bond are payable at the agency of the Company in the City of Chicago, Illinois in immediately available funds, or at the option of the holder thereof at the agency of the Company in the Borough of Manhattan, The City of New York, provided
that at the option of the Company interest may be paid by check mailed to the holder at such holder’s registered address. 
 This Bond
is one of a duly authorized issue of Bonds of the Company (herein called the “Bonds”), in unlimited aggregate principal amount, of the series hereinafter specified, all issued and to be issued under and equally and ratably secured
by a Mortgage and Deed of Trust, dated July 1, 1939 (the “Original Mortgage”), executed by the Company to The Bank of New York Mellon Trust Company, N.A. (herein called the “Trustee”), as Trustee (as successor
to Harris Trust and Savings Bank), as amended by indentures supplemental thereto including the forty-first indenture supplemental thereto dated as of November 25, 2008 (herein called the “Supplemental Indenture”), between the
Company and the Trustee (said Original Mortgage, as so amended, being herein called the “Indenture”), to which Indenture and all indentures supplemental thereto reference is hereby made for a description of the properties mortgaged
and pledged, the nature and extent of the security, the rights of the bearers or registered owners of the Bonds and of the Trustee in respect thereto, and the terms and conditions upon which the Bonds are, and are to be, secured. The Bonds may be
issued in series, for various principal sums, may mature at different times, may bear interest at different rates and may otherwise vary as in the Indenture provided. This Bond is one of a series designated as the “First Mortgage Bonds, 

  

 10 

 
8.625% Series due 2018” (herein called “Bonds of the 2018 Series”) of the Company, issued under and secured by the Indenture executed
by the Company to the Trustee. 
 To the extent permitted by, and as provided in the Indenture, modifications or alterations of the Indenture
or of any indenture supplemental thereto, and of the rights and obligations of the Company and of the holders of the Bonds and coupons, may be made with the consent of the Company by an affirmative vote of not less than 60% in principal amount of
the Bonds entitled to vote then outstanding, at a meeting of Bondholders called and held as provided in the Indenture, and by an affirmative vote of not less than 60% in principal amount of the Bonds of any series entitled to vote then outstanding
and affected by such modification or alteration, in case one or more but less than all of the series of Bonds then outstanding under the Indenture are so affected. No modification or alteration shall be made which will affect the terms of payment of
the principal of or premium, if any, or interest on, this Bond, which are unconditional. The Company has reserved the right to make certain amendments to the Indenture, without any consent or other action by holders of the Bonds of this series
(i) to the extent necessary from time to time to qualify the Indenture under the Trust Indenture Act of 1939, (ii) to delete the requirement that the Company meet a net earnings test as a condition to authenticating additional Bonds or
merging into another company, (iii) to make certain other amendments which make the provisions for the release of mortgaged property less restrictive and (iv) to make certain other amendments, all as more fully provided in the Indenture
and in the Supplemental Indenture. In addition, once all Bonds issued prior to January 1, 1997 are no longer outstanding, the Company will be permitted to issue additional Bonds in an amount equal to 70% of the value of net bondable property
additions not subject to an unfunded prior lien, as provided in the Original Mortgage. 
 This Bond is subject to redemption by the Company
at any time in whole, or from time to time in part, at a price equal to the greater of: (a) 100% of the principal amount of the Bond to be redeemed, plus accrued and unpaid interest on the Bond to the redemption date, or (b) as determined
by the Quotation Agent, the sum of the present values of the remaining scheduled payments of principal and interest on the Bond to be redeemed (not including any portion of payments of interest accrued as of the redemption date) discounted to the
redemption date on a semi-annual basis at the Adjusted Treasury Rate plus fifty (50) basis points, plus accrued and unpaid interest on the Bond to the redemption date, in each of cases (a) and (b) as provided in the Supplemental
Indenture. Such redemption in every case shall be effected upon notice given by: (1) first class mail, postage prepaid, at least thirty days and not more than sixty days prior to the redemption date, to the registered owners of such Bonds at
their addresses as the same shall appear on the transfer register of the Company; and (2) stating, among other things, the redemption price and date, in each case, subject to the conditions of and as more fully set forth in the Indenture.

  

 11 

 The redemption price will be calculated assuming a 360-day year consisting of twelve 30-day months.

 A notice of redemption may provide that the optional redemption described in such notice is conditioned upon the occurrence of certain
events before the redemption date. Such notice of conditional redemption will be of no effect unless all such conditions to the redemption have occurred before the redemption date or have been waived by the Company. If any of these events fail to
occur and are not waived by the Company, the Company will be under no obligation to redeem the Bonds or pay the holders any redemption proceeds, and the Company’s failure to so redeem the Bonds will not be considered a default or event of
default under the Indenture. In the event that any of these conditions fail to occur or are not waived by the Company, the Company will promptly notify the Trustee in writing that the conditions precedent to such redemption have failed to occur and
the Bonds will not be redeemed. 
 Unless the Company defaults in payment of the redemption price, on and after the redemption date, interest
will cease to accrue on the bonds or portions of the bonds called for redemption. 
 “Adjusted Treasury Rate” means, with
respect to any redemption date, the rate per annum equal to the semi-annual equivalent yield to maturity of the Comparable Treasury Issue, assuming a price for the Comparable Treasury Issue (expressed as a percentage of its principal amount) equal
to the Comparable Treasury Price for the redemption date. 
 “Business Day” means any day that is not a day on which banking
institutions in New York City are authorized or required by law or regulation to close. 
 “Comparable Treasury Issue” means
the United States Treasury security selected by the Quotation Agent as having a maturity comparable to the remaining term of the Bonds that would be used, at the time of selection and in accordance with customary financial practice, in pricing new
issues of corporate debt securities of comparable maturity to the remaining term of the Bonds. 
 “Comparable Treasury
Price” means, with respect to any redemption date: 
  

	 	•	 	 the average of the Reference Treasury Dealer Quotations for that redemption date, after excluding the highest and lowest of the Reference Treasury Dealer
Quotations; or 

  

	 	•	 	 if the Quotation Agent obtains fewer than four Reference Treasury Dealer Quotations, the average of all Reference Treasury Dealer Quotations so received.

 “Quotation Agent” means, as selected by the Company, one of the Reference Treasury Dealers. 

 

 12 

 “Reference Treasury Dealer” means (1) each of J.P. Morgan Securities Inc. and
Deutsche Bank Securities Inc. and their respective successors, unless either of them ceases to be a primary U.S. Government securities dealer in the United States (“Primary Treasury Dealer”) in which case the Company shall substitute
another Primary Treasury Dealer; and (2) any two other Primary Treasury Dealers selected by the Company. 
 “Reference Treasury
Dealer Quotations” means, with respect to each Reference Treasury Dealer and any redemption date, the average, as determined by the Quotation Agent, of the bid and asked prices for the Comparable Treasury Issue (expressed in each case as a
percentage of its principal amount) quoted in writing to the Quotation Agent by that Reference Treasury Dealer at 5:00 p.m., New York City time, on the third Business Day preceding that redemption date. 
 In case an event of default, as defined in the Indenture, shall occur, the principal of all of the Bonds at any such time outstanding under the Indenture
may be declared or may become due and payable, upon the conditions and in the manner and with the effect provided in the Indenture. The Indenture provides that such declaration may in certain events be waived by the holders of a majority in
principal amount of the Bonds outstanding. 
 This Bond is transferable by the registered owner hereof, in person or by duly authorized
attorney, on the books of the Company to be kept for that purpose at the agency of the Company in the City of Chicago, Illinois, and at the agency of the Company in the Borough of Manhattan, The City of New York, upon surrender and cancellation of
this Bond and on presentation of a duly executed written instrument of transfer, and thereupon a new registered Bond or Bonds of the same series, of the same aggregate principal amount and in authorized denominations will be issued to the transferee
or transferees in exchange herefor; and this Bond, with or without others of like form and series, may in like manner be exchanged for one or more new registered Bonds of the same series of other authorized denominations but of the same aggregate
principal amount; all upon payment of the charges and subject to the terms and conditions set forth in the Indenture. 
 The Company or a
successor entity may deliver to the Trustee in substitution for any Bonds of the 2018 Series, mortgage bonds or other similar instruments as set forth in the Indenture. 
 Subject to the preceding sentence, no recourse shall be had for the payment of the principal of or premium, if any, or interest on this Bond, or for any claim based hereon or on the Indenture or any indenture
supplemental thereto, against any incorporator, or against any stockholder, director or officer, past, present or future, of the Company, or of any predecessor or successor corporation, as such, either directly or through the Company or any such
predecessor or 

  

 13 

 
successor corporation, whether by virtue of any constitution, statute or rule of law, or by the enforcement of any assessment or penalty or otherwise, all
such liability, whether at common law, in equity, by any constitution, statute or otherwise, of incorporators, stockholders, directors or officers being released by every owner hereof by the acceptance of this Bond and as part of the consideration
for the issue hereof, and being likewise released by the terms of the Indenture. 
 No director, officer, employee or stockholder of the
Company will have any liability for any obligations of the Company under the Bonds or Indenture or for any claim based on, in respect of, or by reason of, such obligations or their creation. Each holder by accepting a Bond waives and releases all
such liability. The waiver and release are part of the consideration for issuance of the Bonds. The waiver may not be effective to waive liabilities under the federal securities laws. It is the view of the Securities and Exchange Commission that
this type of waiver is against public policy. 
 This Bond shall not be entitled to any benefit under the Indenture or any indenture
supplemental thereto, or become valid or obligatory for any purpose, until The Bank of New York Mellon Trust Company, N.A., the Trustee (as successor to Harris Trust and Savings Bank) under the Indenture, or a successor trustee thereto under the
Indenture, shall have signed the form of certificate endorsed hereon. 
  

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 IN WITNESS WHEREOF, WESTAR ENERGY, INC. has caused this Bond to be signed in its name by its Chairman of
the Board, President and Chief Executive Officer or a Vice President, manually or by facsimile, and its corporate seal (or a facsimile thereof) to be hereto affixed and attested by its Secretary or an Assistant Secretary, manually or by facsimile.

 Dated: November     , 2008 
  

			
	WESTAR ENERGY, INC.
		
	By	 	  

		 	Mark A. Ruelle
		 	Executive Vice President and Chief Financial Officer

  

	
	Attest:
	
	  

	Larry D. Irick
	Vice President, General Counsel and Corporate Secretary

 [SIGNATURE PAGE TO GLOBAL NOTE] 
  

 15 

 TRUSTEE’S CERTIFICATE 
 This Bond is one of the Bonds, of the series designated herein, described in the within-mentioned Mortgage and Deed of Trust of July 1, 1939 and Supplemental Indenture dated as of November
    , 2008. 
  

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

		
	By	 	  

		 	Authorized Person

 [TRUSTEE’S CERTIFICATE TO GLOBAL NOTE] 
  

 16 

 Section 4. Execution and Form of Temporary Bonds of the 2018 Series. Until Bonds of the 2018
Series in definitive form are ready for delivery, the Company may execute, and upon its request in writing the Trustee shall authenticate and deliver, in lieu thereof, Bonds of the 2018 Series in temporary form, as provided in Section 9 of
Article II of the Original Indenture. 
 ARTICLE II 
 ISSUE OF BONDS OF THE 2018 SERIES 
 Section 1. Limitation as to Principal Amount of Bonds of the 2018 Series. The total principal amount of Bonds of the 2018 Series which may be authenticated and delivered hereunder is not limited
except as the Original Indenture and this Supplemental Indenture limit the principal amount of Bonds which may be issued thereunder. 
 Section 2. Execution and Delivery of Bonds of the 2018 Series. Bonds of the 2018 Series for the aggregate principal amount of $300,000,000 may forthwith be executed by the Company and delivered to the Trustee and shall
be authenticated by the Trustee and delivered (either before or after the filing or recording hereof) to or upon the order of the Company, upon receipt by the Trustee of the resolutions, certificates, instruments and opinions required by Article III
of the Original Indenture. 
 ARTICLE III 
 REDEMPTION AND SUBSTITUTION OF BONDS OF THE 2018 SERIES 
 Section 1. Optional Redemption of Bonds of the 2018 Series. 
 (1) Optional Redemption of Bonds of the 2018 Series. The Company may, at its option, redeem the Bonds of the 2018 Series at any time in whole, or
from time to time in part, after giving the required notice under subsection (2) of this Article III, Section 1, at a redemption price equal to the greater of: (a) 100% of the principal amount of the Bonds of the 2018 Series to be
redeemed, plus accrued and unpaid interest on Bonds of the 2018 Series to be redeemed to the redemption date or (b) as determined by the Quotation Agent, the sum of the present values of the remaining scheduled payments of principal and
interest on the Bonds of the 2018 Series to be redeemed (not including any portion of payments of interest accrued as of the redemption date) discounted to the redemption date on a semi-annual basis at the Adjusted Treasury Rate plus fifty
(50) basis points, plus accrued and unpaid interest on those Bonds of the 2018 Series to be redeemed to the redemption date. 
  

 17 

 The redemption price will be calculated assuming a 360-day year consisting of twelve 30-day months.

 Unless the Company defaults in payment of the redemption price, on and after the redemption date, interest will cease to accrue on the
Bonds of the 2018 Series or portions of the Bonds of the 2018 Series called for redemption. 
 (2) Notice of Redemption. Subject to
the provisions of Article V of the Original Indenture, in the case of redeeming all or any portion of the Bonds of the 2018 Series, the Company shall cause notice of redemption to be given by (1) first class mail, postage prepaid, at least
thirty days and not more than sixty days prior to the date of redemption, to the registered owners of such Bonds of the 2018 Series at their addresses as the same shall appear on the transfer register of the Company; and (2) stating, among
other things, the redemption price and date. 
 Notwithstanding the foregoing, a notice of redemption may provide that the optional
redemption described in such notice is conditioned upon the occurrence of certain events before the date of redemption. Such notice of conditional redemption will be of no effect unless all such conditions to the redemption shall have occurred
before the redemption date or shall have been waived by the Company. If any of these events fail to occur and are not waived by the Company, the Company will be under no obligation to redeem the Bonds of the 2018 Series or pay the holders thereof
any redemption proceeds and the Company’s failure to so redeem the Bonds of the 2018 Series will not be considered a default or event of default under the Indenture. In the event that any of these conditions fail to occur or are not waived by
the Company, the Company will promptly notify the Trustee in writing that the conditions precedent to such redemption have failed to occur and the Bonds of the 2018 Series will not be redeemed. 
 “Adjusted Treasury Rate” means, with respect to any redemption date, the rate per annum equal to the semi-annual equivalent yield to
maturity of the Comparable Treasury Issue, assuming a price for the Comparable Treasury Issue (expressed as a percentage of its principal amount) equal to the Comparable Treasury Price for the redemption date. 
 “Business Day” means any day that is not a day on which banking institutions in New York City are authorized or required by law or
regulation to close. 
 “Comparable Treasury Issue” means the United States Treasury security selected by the Quotation
Agent as having a maturity comparable to the remaining term of the Bonds that would be used, at the time of selection and in accordance with customary financial practice, in pricing new issues of corporate debt securities of comparable maturity to
the remaining term of the Bonds. 
  

 18 

 “Comparable Treasury Price” means, with respect to any redemption date: 
  

	 	•	 	 the average of the Reference Treasury Dealer Quotations for that redemption date, after excluding the highest and lowest of the Reference Treasury Dealer
Quotations; or 

  

	 	•	 	 if the Quotation Agent obtains fewer than four Reference Treasury Dealer Quotations, the average of all Reference Treasury Dealer Quotations so received.

 “Quotation Agent” means, as selected by the Company, one of the Reference Treasury Dealers. 

“Reference Treasury Dealer” means (1) each of J.P. Morgan Securities Inc. and Deutsche Bank Securities Inc. and their respective
successors, unless either of them ceases to be a primary U.S. Government securities dealer in the United States (“Primary Treasury Dealer”) in which case the Company shall substitute another Primary Treasury Dealer; and (2) any two
other Primary Treasury Dealers selected by the Company. 
 “Reference Treasury Dealer Quotations” means, with respect to
each Reference Treasury Dealer and any redemption date, the average, as determined by the Quotation Agent, of the bid and asked prices for the Comparable Treasury Issue (expressed in each case as a percentage of its principal amount) quoted in
writing to the Quotation Agent by that Reference Treasury Dealer at 5:00 p.m., New York City time, on the third Business Day preceding that redemption date. 
 Section 2. Substitution of Bonds of the 2018 Series. The Company may deliver to the Trustee in substitution for any Bonds of the 2018 Series, mortgage bonds or other similar secured instruments
of the Company or any successor entity, whether by merger, combination or acquisition of all or substantially all of the assets of the Company, or otherwise, issued under a mortgage and deed of trust or similar instrument of the Company or any
successor entity in like principal amount of like term and bearing the same rate of interest and having the same interest payment dates and same redemption provisions as the Bonds of the 2018 Series and which are otherwise substantially similar to
the Bonds of the 2018 Series (such substituted bonds hereinafter being referred to in this Article III, Section 2 as the “2018 Series Substituted Mortgage Bonds”). The 2018 Series Substituted Mortgage Bonds may only be
delivered to the Trustee upon receipt by the Trustee of (i) a letter from Moody’s (as hereinafter defined), dated within ten days prior to the date of delivery of the 2018 Series Substituted Mortgage Bonds, stating that its rating of the
2018 Series Substituted Mortgage 

  

 19 

 
Bonds is at least equal to its then current rating on the Bonds of the 2018 Series, (ii) a letter from S&P (as hereinafter defined), dated within
ten days prior to the date of delivery of the 2018 Series Substituted Mortgage Bonds, stating that its rating to the 2018 Series Substituted Mortgage Bonds is at least equal to its then current rating on the Bonds of the 2018 Series, (iii) a
letter from Fitch (as hereinafter defined), dated within ten days prior to the date of delivery of the 2018 Series Substituted Mortgage Bonds, stating that its rating to the 2018 Series Substituted Mortgage Bonds is at least equal to its then
current rating on the Bonds of the 2018 Series, (iv) an opinion of counsel, which may be counsel to the Company or any successor entity, that such substitution will not result in the recognition of capital gain or loss for U.S. federal income
tax purposes to the holders of the Bonds of the 2018 Series, (v) an opinion of counsel which may be counsel to the Company or any successor entity, to the effect that the 2018 Series Substituted Mortgage Bonds shall have been duly and
validly authorized, executed, authenticated, and delivered and shall constitute the valid, legally binding and enforceable obligations of the Company or any successor entity enforceable in accordance with their terms, except as limited by
bankruptcy, insolvency or other laws affecting the enforcement of mortgagees’ and other creditors’ rights and shall be entitled to the benefit of the mortgage and deed of trust or other similar instrument pursuant to which they shall have
been issued and (vi) such other certificates and documents with respect to the issuance and delivery of the 2018 Series Substituted Mortgage Bonds as may be required by law or as the Trustee may reasonably request. 
 “Fitch” means Fitch Ratings, Ltd., a majority-owned subsidiary of Fimalac, S.A., its successors and their assigns, except that if such
entity shall be dissolved or liquidated or shall no longer perform the functions of a securities rating agency, then the term “Fitch” shall be deemed to refer to any other nationally recognized securities rating agency selected by the
Company. 
 “Moody’s” means Moody’s Investors Service, Inc., a corporation organized and existing under the laws
of the State of Delaware, its successors and their assigns, except that if such corporation shall be dissolved or liquidated or shall no longer perform the functions of a securities rating agency, then the term “Moody’s” shall be
deemed to refer to any other nationally recognized securities rating agency selected by the Company. 
 “S&P” means
Standard & Poor’s Ratings Services, a division of The McGraw Hill Companies, Inc., duly organized and existing under and by virtue of the laws of the State of New York, and its successors and assigns, except that if such rating agency
shall be dissolved or liquidated or shall no longer perform the functions of a securities rating agency, then the term “S&P” shall be deemed to refer to any other nationally recognized securities rating agency selected by the Company.

  

 20 

 ARTICLE IV 
 ADDITIONAL COVENANTS 
 The Company hereby covenants, warrants and agrees:

 Section 1. Title to Mortgaged Property. That the Company is lawfully seized and possessed of all of the mortgaged
property described in the granting clauses of this Supplemental Indenture; that it has good, right and lawful authority to mortgage the same as provided in this Supplemental Indenture; and that such mortgaged property is, at the actual date of the
initial issue of the Bonds of the 2018 Series, free and clear of any deed of trust, mortgage, lien, charge or encumbrance thereon or affecting the title thereto prior to the Indenture, except as set forth in the granting clauses of the Original
Indenture, the Thirty-Second Supplemental Indenture, the Thirty-Sixth Supplemental Indenture, the Thirty-Seventh Supplemental Indenture, the Thirty-Eight Supplemental Indenture, the Thirty-Ninth Supplemental Indenture, the Fortieth Supplemental
Indenture and this Supplemental Indenture. 
 Section 2. To Retire Certain Portions of Bonds upon Release of All or
Substantially All of the Electric Properties. So long as any Bonds of any series originally issued prior to January 1, 1997 are outstanding, in the event all or substantially all of the electric properties shall have been released as an
entirety from the lien of the Original Indenture, the Company will, at any time or from time to time within six months after the date of such release, retire Bonds outstanding under the Original Indenture in an aggregate principal amount equal to
the fair value of the electric properties so released pursuant to Section 3 of Article VII of the Original Indenture, as stated in the engineer’s certificate required by Section 3(b) of said Article VII, and the proceeds of
the electric properties so released pursuant to Section 5 of said Article VII. Such retirement of Bonds shall be effected in either one or both of the following methods: 
 (a) By the withdrawal pursuant to Section 2 of Article VIII of the Original Indenture of any moneys deposited with the Trustee pursuant to
Sections 3(d), 4(d) and 5 of Article VII of the Original Indenture upon such release; or 
 (b) By causing the Trustee to purchase or redeem
bonds, pursuant to Section 8 of Article VIII of the Original Indenture, out of any moneys deposited with the Trustee pursuant to Sections 3(d), 4(d) and 5 of Article VII of the Original Indenture upon such release. 
 The Bonds to be so retired pursuant to such Section 3 of Article VII of the Original Indenture shall include a principal amount of Bonds of each
Series then outstanding in the same ratio to the aggregate principal amount of all Bonds so retired as the aggregate principal amount of all Bonds of each Series outstanding immediately prior to such release bears to the total principal amount of
all Bonds then outstanding. 
  

 21 

 ARTICLE V 
 AMENDMENTS AND RESERVATIONS OF RIGHTS TO AMEND THE ORIGINAL 
 INDENTURE 
 Section 1. So Long as Bonds Issued Prior to January 1, 1997 Remain Outstanding. So long as any of the Bonds of any series originally issued prior to January 1, 1997 shall remain outstanding:

 (a) Notwithstanding the provisions of Section 4 of Article III of the Original Indenture, no Bonds shall be authenticated and
delivered pursuant to the provisions of Article III of the Original Indenture and issued upon the basis of net bondable value of property additions for an aggregate principal amount in excess of sixty percent (60%) of the net bondable value of
property additions not subject to an unfunded prior lien. 
 For the purposes of
Subsections (e) and (f) of the definition of “net bondable value of property additions not subject to an unfunded prior lien,” contained in Article I of the Original Indenture, and Subdivisions 8 and 9 of clause (a) of
Section 4 of Article III of the Original Indenture, in all computations made with respect to a period subsequent to April 1, 1949, the deductions therein referred to shall in each case be ten-sixths ( 10/6ths) of the respective amounts mentioned, in lieu of ten-sevenths ( 10/
7ths). 
 (b) Notwithstanding the provisions of
Section 3(a) of Article VIII of the Original Indenture, no moneys received by the Trustee pursuant to Section 5(a) of Article III of the Original Indenture shall be paid over by the Trustee in an amount in excess of sixty percent
(60%) of the net bondable value of property additions not subject to an unfunded prior lien, and for the purposes of Section 3 of Article VII of the Original Indenture, the amount of cash required to be deposited by the Company
pursuant to Subsection (d) of said Section 3 of Article VII shall not be reduced in an amount in excess of sixty percent (60%) of the net bondable value of property additions not subject to an unfunded prior lien. 
 (c) For the purposes of clauses (c) and (d) of the definition of “net bondable
value of property additions subject to an unfunded prior lien,” contained in Article I of the Original Indenture, and Subsection 7 of clause (a) of Section 4 of Article III of the Original Indenture, in all computations made with
respect to a period subsequent to April 1, 1949, the deductions therein referred to shall in each case be ten-sixths ( 10/6ths) of the respective amounts mentioned, in lieu of ten-sevenths ( 10/7ths). 
  

 22 

 (d) Subsection (a) of Section 14, clauses (1) and (2) of Subsection (a) of
Section 16 of Article IV and clause (1) of Subsection (b) of Section 1 of Article XII of the Original Indenture shall be deemed amended by substituting the words “sixty percent (60%)” for “seventy percent
(70%)” where they appear in said provisions of the Original Indenture. 
 (e) The definition of the term “net earnings available
for interest, depreciation and property retirement,” as contained in Article I of the Original Indenture, shall be deemed to mean the net earnings of the Company ascertained as follows: 
 (i) The total operating revenues of the Company and the net non-operating revenues of the properties of the Company shall be ascertained:

 (A) From the total, determined as provided in Subsection (a), there shall be deducted all operating expenses, including all
salaries, rentals, insurance, license and franchise fees, expenditures for repairs and maintenance, taxes (other than income, excess profits and other taxes measured by or dependent on net taxable income), depreciation as shown on the books of the
Company or an amount equal to the minimum provision for depreciation as hereinafter defined, whichever is greater, but excluding all property retirement appropriations, all interest and sinking fund charges, amortization of stock and debt discount
and expense or premium and further excluding any charges to income or otherwise for the amortization of plant or property accounts or of amounts transferred therefrom. 
 (B) The balance remaining after the deduction of the total amount computed pursuant to Subsection (b) from the total amount computed
pursuant to Subsection (a) shall constitute the “net earnings of the Company available for interest,” provided that not more than fifteen percent (15%) of the net earnings of the Company available for interest may consist
of the aggregate of (1) net non-operating income, (2) net earnings from mortgaged property other than property of the character of property additions and (3) net earnings from property not subject to the lien of this Indenture.

 (C) No income received or accrued by the Company from securities and no profits or losses of capital assets shall be
included in making the computations aforesaid. 
  

 23 

 (D) In case the Company shall have acquired any acquired plant or systems or shall have
been consolidated or merged with any other corporation, within or after the particular period for which the calculation of net earnings of the Company available for interest, depreciation and property retirement is made, then, in computing the net
earnings of the Company available for interest, depreciation and property retirement, there may be included, to the extent they may not have been otherwise included, the net earnings or net losses of such acquired plant or system or of such other
corporation, as the case may be, for the whole of such period. The net earnings or net losses of such property additions, or of such other corporation for the period preceding such acquisition or such consolidation or merger, shall be ascertained
and computed as provided in the foregoing subsections of this definition as if such acquired plant or system had been owned by the Company during the whole of such period, or as if such other corporation had been consolidated or merged with the
Company prior to the first day of such period. 
 (E) In case the Company shall have obtained the release of any property
pursuant to Section 3 of Article VII of the Original Indenture, of a fair value in excess of Five Hundred Thousand Dollars ($500,000), as shown by the engineer’s certificate required by said Section 3, or shall have obtained the
release of any property pursuant to Section 5 of Article VII of the Original Indenture, the proceeds of which shall have exceeded Five Hundred Thousand Dollars ($500,000), within or after the particular period for which the calculation of
net earnings of the Company available for interest, depreciation and property retirement is made, then, in computing the net earnings of the Company available for interest, depreciation and property retirement, the net earnings or net losses of such
property for the whole of such period shall be excluded to the extent practicable on the basis of actual earnings and expenses of such property or on the basis of such estimates of the earnings and expenses of such property as the signers of an
officers’ certificate filed with the Trustee pursuant to Section 3(b) of Article III or Section 16 of Article IV of the Original Indenture shall deem proper. 
 (ii) The term “minimum charge for depreciation” as used herein shall mean an amount equal to (A) fifteen percent
(15%) of the total operating revenues of the Company after deducting therefrom an amount equal to the aggregate cost to the Company of electric energy, gas and water purchased for resale to others and rentals paid for, or other payments made
for the use of, property owned by others and leased to or operated by 

  

 24 

 
the Company, the maintenance of which and depreciation on which are borne by the owners, less (B) an amount equal to the expenditures for maintenance
and repairs to the plants and property of the Company and included or reflected in its operating expense accounts. 
 (iii)
The terms “net earnings available for interest, depreciation and property retirement” and “net earnings of another corporation available for interest, depreciation and property retirement” as contained in Article I
of the Original Indenture, when used with respect to any property or with respect to another corporation, shall mean the net earnings of such property or the net earnings of such other corporation, as the case may be, computed in the manner provided
in Subsections (a), (b), (c) and (d) hereof. 
 (f) Notwithstanding the provisions of clauses (1) and (2) of
subsection (b) of Article III, and Subsection (b) of Section 14 of Article IV, and Subsection (b) of Section 16 of Article IV and clause (2) of Subsection (b) of Section 1 of Article XII of the
Original Indenture, the computation of net earnings required therein shall be made as provided in Subsection (e) of this Section 1, and the net earnings tests required in said mentioned provisions of Articles III, IV and XII of the
Original Indenture shall be based on two times the annual interest charges described in such provisions, instead of two and one-half times such charges, but shall not otherwise affect such provisions or relieve from the requirements therein
pertaining to ten percent (10%) of the principal amount of Bonds therein described. 
 Section 2. Facsimile Signatures. All of the Bonds of the 2018 Series and of any series initially issued after the initial issuance of Bonds of the 2018 Series shall, from time to time, be executed on behalf
of the Company by its Chairman of the Board, Chief Executive Officer, President or one of its Vice Presidents whose signature, notwithstanding the provisions of Section 12 of Article II of the Original Indenture, may be by facsimile, and its
corporate seal (which may be in facsimile) shall be thereunto affixed and attested by its Secretary or one of its Assistant Secretaries whose signature, notwithstanding the provisions of the aforesaid Section 12, may be by facsimile.

 In case any of the officers who have signed or sealed any of the Bonds of the 2018 Series or of any series initially issued after the
initial issuance of Bonds of the 2018 Series manually or by facsimile shall cease to be such officers of the Company before such Bonds so signed and sealed shall have been actually authenticated by the Trustee or delivered by the Company, such
Bonds nevertheless may be authenticated, issued and delivered with the same force and effect as though the person or persons who so signed or sealed such Bonds had not ceased to be such officer or officers of the Company; and also any such Bonds may
be signed or sealed by manual or facsimile signature on behalf of the 

  

 25 

 
Company by such persons as at the actual date of the execution of any of such Bonds shall be the proper officers of the Company, although at the nominal date
of any such Bond any such person shall not have been such officer of the Company. 
 Section 3. Reservation of Right to
Amend Article VII. The Company reserves the right subject to appropriate corporate action, but without the consent or other action of holders of bonds of any series created after January 1, 1997, to make such amendments to the
Original Indenture, as supplemented, as shall be necessary in order to amend Article VII thereof by adding thereto a Section 8 and a Section 9 to read as follows: 
 “SECTION 8. Notwithstanding any other provision of this Indenture, unless an
event of default shall have happened and be continuing, or shall happen as a result of the making or granting of an application to release mortgaged property permitted by this Section 8, the Trustee shall release from the lien of this Indenture
any mortgaged property if the fair value to the Company of all of the property constituting the trust estate (excluding the mortgaged property to be released but including any mortgaged property to be acquired by the Company with the proceeds of, or
otherwise in connection with, such release) equals or exceeds an amount equal to  10/7ths of the aggregate principal amount of
outstanding Bonds and prior lien bonds outstanding at the time of such release, upon receipt by the Trustee of: 
 “(a) an officers’ certificate dated the date of such release, requesting such release, describing in reasonable detail the mortgaged property to be released and stating the reason for such release; 
 “(b) an engineer’s certificate, dated the date of such release, stating (i) that the signer of such engineer’s
certificate has examined such officers’ certificate in connection with such release, (ii) the fair value to the Company, in the opinion of the signer of such engineer’s certificate, of (A) all of the property constituting the
trust estate, and (B) the mortgaged property to be released, in each case as of a date not more than 90 days prior to the date of such release, and (iii) that in the opinion of such signer, such release will not impair the security under
this Indenture in contravention of the provisions hereof; 
 “(c) in case any bondable property is being acquired by the
Company with the proceeds of, or otherwise in connection with, such release, an engineer’s certificate, dated the date of such release, as to the fair value to the Company, as of the date not more 

  

 26 

 
than 90 days prior to the date of such release, of the bondable property being so acquired (and if within six months prior to the date of acquisition by the
Company of the bondable property being so acquired, such bondable property has been used or operated by a person or persons other than the Company in a business similar to that in which it has been or is to be used or operated by the Company, and
the fair value to the Company of such bondable property, as set forth in such certificate, is not less than $25,000 and not less than 1% of the aggregate principal amount of Bonds at the time outstanding, such certificate shall be an independent
appraiser’s certificate); 
 “(d) an officer’s
certificate, dated the date of such release, stating the aggregate principal amount of outstanding Bonds and prior lien bonds outstanding at the time of such release, and stating that the fair value to the Company of all of the property constituting
the trust estate (excluding the mortgaged property to be released but including any bondable property to be acquired by the Company with the proceeds of, or otherwise in connection with, such release) stated on the independent appraiser’s
certificate filed pursuant to Section 8(c) equals or exceeds an amount equal to  10/7ths of such aggregate principal amount;

 “(e) an officers’ certificate, dated the date of such release, stating that, the Company is not, and by
the making or granting of the application will not be, in default in the performance of any of the terms and covenants of this Indenture; 
 “(f) an opinion of counsel, dated the date of such release, as to compliance with conditions precedent. 
 “SECTION 9. If the Company is unable to obtain, in accordance with any other
Section of this Article VII, the release from the lien of this Indenture of any property constituting part of the trust estate, unless an event of default shall have happened and be continuing, or shall happen as a result of the making or granting
of an application to release mortgaged property permitted by this Section 9, the Trustee shall release from the lien of this Indenture any mortgaged property if the fair value to the Company thereof, as shown by the engineer’s certificate
filed pursuant to Section 9(b), is less than  1/2 of 1% of the aggregate principal amount of outstanding Bonds and prior
lien bonds outstanding at the time of such release, provided that the aggregate fair value to the Company of all mortgaged property released pursuant to this Section 9, as shown by all engineer’s certificates filed pursuant to
Section 9(b) in any period of 12 consecutive calendar months which includes the date of such engineer’s 

  

 27 

 
certificate, shall not exceed 1% of the aggregate principal amount of the outstanding Bonds and prior lien bonds outstanding at the time of such release,
upon receipt by the Trustee of: 
 “(a) an officers’ certificate, dated the date of such release, requesting such
release, describing in reasonable detail the mortgaged property to be released and stating the reason for such release; 
 “(b) an engineer’s certificate, dated the date of such release, stating (A) that the signer of such engineer’s certificate has examined such officers’ certificate in connection with such release, (B) the fair
value to the Company, in the opinion of the signer of such engineer’s certificate, of such mortgaged property to be released as of a date not more than 90 days prior to the date of such release, and (C) that in the opinion of such signer
such release will not impair the security under this Indenture in contravention of the provisions hereof; 
 “(c) an officers’ certificate, dated the date of such release, stating
the aggregate principal amount of outstanding Bonds and prior lien bonds outstanding at the time of such release, that  1/2 of 1%
of such aggregate principal amount does not exceed the fair value to the Company of the mortgaged property for which such release is applied for as shown by the engineer’s certificate referred to in Section 9(b), and that 1% of such
aggregate principal amount does not exceed the aggregate fair value to the Company of all mortgaged property released from the lien of this Indenture pursuant to this Section 9 as shown by all engineer’s certificates filed pursuant to
Section 9(b) in such period of 12 consecutive calendar months; 
 “(d) an officers’ certificate, dated
the date of such release, stating that, the Company is not, and by the making or granting of the application will not be, in default in the performance of any of the terms and covenants of this Indenture; and 
 “(e) an opinion of counsel, dated the date of such release, as to compliance with conditions precedent.” 
 The Company also reserves the right subject to appropriate corporate action, but without the consent or other action of holders of Bonds of any series
created after January 1, 1997 to amend, modify or delete any other provision of the Original Indenture, as supplemented, as may be necessary in order to effectuate the intents and purposes contemplated by the foregoing Sections 8 and 9.

  

 28 

 Section 4. Reservation of Right to Delete Certain Requirements and Conditions.
The Company reserves the right subject to appropriate corporate action, but without the consent or other action of holders of Bonds of any series created after January 1, 1997 to: 
 (a) delete as a condition to the authentication of additional Bonds pursuant to Sections 4, 5 or 6 of Article III of the Original Indenture the
requirement to file or deposit with the Trustee the officers’ certificate described in Section 3(b) of Article III of the Original Indenture; 
 (b) delete as a condition to the consolidation or merger of the Company into, or sale by the Company of its property as an entirety or substantially as an entirety to another corporation the requirement set forth in
Section 1(b)(2) of Article XII of the Original Indenture; 
 (c) delete as a condition to the release of property pursuant to
Section 3 of Article VII of the Original Indenture, the requirement to obtain an independent engineer’s certificate under the circumstances set forth in Section 3(c) of Article VII; and 
 (d) amend, modify or delete any other provision of the Original Indenture, as supplemented, as may be necessary in order to effectuate the intents and
purposes contemplated by this Section 4. 
 Section 5. Issuance of Variable Rate Bonds. The Company reserves the
right, subject to appropriate action, but without any consent or other action by holders of Bonds of the 2018 Series, or of any subsequent series of bonds, to clarify the ability of the Company to issue variable rate bonds under the Original
Indenture, notwithstanding any provision of the Original Indenture to the contrary. The Company may make such other amendments to the Original Indenture as may be necessary or desirable in the opinion of the Company to effect the foregoing;

 Section 6. Substitution of Bonds. The Company reserves the right, subject to appropriate action, but without
any consent or other action by holders of Bonds of the 2018 Series, or of any subsequent series of bonds, to amend the Original Indenture as may be necessary in order to permit the Company to deliver to the Trustee in substitution for any bonds
issued under the Original Indenture (except Bonds of the 2018 Series, which are subject to Article III, Section 2 hereof), mortgage bonds or other similar instruments of the Company or any successor entity, whether by merger, combination or
acquisition of all or substantially all of the assets of the Company, or otherwise, issued under a mortgage and deed of 

  

 29 

 
trust or similar instrument of the Company or any successor entity in like principal amount of like term and bearing the same rate of interest as the
original bonds (such substituted bonds hereinafter being referred to as the “Substituted Mortgage Bonds”). The Substituted Mortgage Bonds may only be delivered to the Trustee upon receipt by the Trustee of (i) if the original
bonds were rated by Moody’s, a letter from Moody’s, dated within ten days prior to the date of delivery of the Substituted Mortgage Bonds, stating that its rating of the Substituted Mortgage Bonds is at least equal to its then current
rating on the original bonds, (ii) if the original bonds were rated by S&P, a letter from S&P, dated within ten days prior to the date of delivery of the Substituted Mortgage Bonds, stating that its rating to the Substituted Mortgage
Bonds is at least equal to its then current rating on the original bonds, (iii) if the original bonds were rated by Fitch, a letter from Fitch, dated within ten days prior to the date of delivery of the Substituted Mortgage Bonds, stating that
its rating to the Substituted Mortgage Bonds is at least equal to its then current rating on the original bonds (iv) an opinion of counsel which may be counsel to the Company or any successor entity, to the effect that the Substituted Mortgage
Bonds shall have been duly and validly authorized, executed, authenticated, and delivered and shall constitute the valid, legally binding and enforceable obligations of the Company or any successor entity enforceable in accordance with their terms,
except as limited by bankruptcy, insolvency or other laws affecting the enforcement of mortgagees’ and other creditors’ rights and shall be entitled to the benefit of the mortgage and deed of trust or other similar instrument pursuant to
which they shall have been issued and (v) such other certificates and documents with respect to the issuance and delivery of the Substituted Mortgage Bonds as may be required by law or as the Trustee may reasonably request. The Company may make
such other amendments to the Original Indenture as may be necessary or desirable in the opinion of the Company to effect the foregoing. 
 Section 7. Addition of a Governing Law Clause. The Company reserves the right, subject to appropriate action, but without any consent or other action by holders of Bonds of the 2018 Series, or of any subsequent
series of bonds, to amend the Original Indenture to add the following new section: 
 “This Indenture shall be deemed to
be a contract made under the laws of the State of Kansas and for all purposes shall be construed in accordance with the laws of the State of Kansas, without regard to conflicts of laws principles thereof.” 
 Section 8. Event of Default for Failure to Pay Final Judgments in Excess of $100,000. The Company reserves the right, subject to
appropriate action, but without any consent or other action by holders of Bonds of the 2018 Series, or of any subsequent series of bonds, to amend the Original Indenture to delete Article IX, Section 1(j). The Company may make such other
amendments to the Original Indenture as may be necessary or desirable in the opinion of the Company to effect the foregoing. 
  

 30 

 Section 9. Net Earnings Test in Connection with Property Acquisitions. The
Company reserves the right, subject to appropriate action, but without any consent or other action by holders of Bonds of the 2018 Series, or of any subsequent series of bonds, to amend the Original Indenture to delete Article IV, Section 14(b)
and reserves the right to further amend, modify or delete any other provision of the Original Indenture, as supplemented, as may be necessary in order to effectuate the intents and purposes contemplated by this Section 9. 
 Section 10. Addition of Nuclear Fuel. The Company reserves the right, subject to appropriate action, but without any consent
or other action by holders of Bonds of the 2018 Series, or of any subsequent series of bonds, to amend the Original Indenture to (i) add Nuclear Fuel to the definition of “Property Additions”; provided that there shall
be no restrictions under the Original Indenture on the application of any controls, liens, regulations, easements, restrictions, exceptions or reservations by any governmental authority on the Nuclear Fuel, (ii) to allow the Company to at any
time, unless the Company is in default in the payment of the interest on any of the bonds then outstanding or there is an ongoing event of default without any release or consent by, or report to, the Trustee, sell or otherwise dispose of, free from
the lien of the Original Indenture, any Nuclear Fuel which shall have become old, inadequate, obsolete, worn out, unfit, unadapted, unserviceable, undesirable or unnecessary for use in the operations of the Company upon the replacement or
substitution of such Nuclear Fuel with other Nuclear Fuel of at least equal value and subject to the lien of the Original Indenture and (iii) to further amend, modify or delete any other provision of the Original Indenture, as supplemented, as
may be necessary in order to effectuate the intents and purposes contemplated by this Section 10. 
 The term ‘Nuclear
Fuel’ shall mean (a) any fuel element, including nuclear fuel and associated means (and any similar or analogous device or substance), whether or not classified as fuel and whether or not chargeable to operating expenses, comprising or
intended to comprise, or formerly comprising, the core, or other part, of a nuclear reactor or any similar or analogous device, (b) any fuel element, including nuclear fuel, and associated means (and any similar or analogous device or
substance) while in the process of fabrication or preparation and special nuclear or other materials held for use in such fabrication or preparation, (c) any substances or materials formerly comprising such nuclear fuel and associated means (or
any similar or analogous device or substance) and which substances or materials are undergoing or have undergone reprocessing and (d) uranium, thorium, plutonium, and any other substance or material from time to time used or selected for use by
the Company as fuel material, or as potential fuel material, in a nuclear reactor or any similar or analogous device. 
  

 31 

 Section 11. Modernization of the Original Indenture. The Company reserves the
right, subject to appropriate action, but without any consent or other action by holders of Bonds of the 2018 Series, or of any subsequent series of bonds, to amend the Original Indenture to: 
 (i) Eliminate maintenance and improvement fund requirements; 
 (ii) Simplify the provisions for release of obsolete property, de minimis property releases and substitution of property and unfunded
property; 
 (iii) Permit additional terms of bonds or forms of bond in supplemental indentures, including terms for
uncertificated and global securities (or definitive securities in lieu thereof) and medium-term notes; 
 (iv) Make any
changes necessary to conform the Mortgage with the requirements of the Trust Indenture Act; 
 (v) Add defeasance provisions
providing for covenant and legal defeasance options; 
 (vi) Permit the Company to remove the trustee in certain
circumstances; 
 (vii) Provide for direction to the trustee under the Mortgage to vote pledged prior lien bonds for specified
amendments to the prior lien mortgage; 
 (viii) Provide broader investment directions to the trustee or permitting the
Company to direct investment of money held by the Trustee, so long as there is no event of default under the Mortgage; 
 (ix)
Amend the definition of “Excepted Property” to exclude property which generally cannot be mortgaged without undue administrative burden (i.e. automobiles), but allowing the Company to subject Excepted Property to the Mortgage; 

(x) Amend the definition of “Bondable Property” to allow all mortgaged property to be bondable; and 
 (xi) Update the definition of “Permitted Liens.” 
  

 32 

 ARTICLE VI 
 MISCELLANEOUS PROVISIONS 
 Section 1. Acceptance of
Trust. The Trustee accepts the trusts herein declared, provided, created or supplemented and agrees to perform the same upon the terms and conditions herein and in the Original Indenture, as amended, set forth and upon the following terms and
conditions. 
 Section 2. Responsibility and Duty of Trustee. The Trustee shall not be responsible in any manner
whatsoever for or in respect of the validity or sufficiency of this Supplemental Indenture 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 XIII of the Original Indenture, as amended by the Second Supplemental Indenture, shall apply to and form part of this Supplemental Indenture with the same force and effect as if the same were herein set forth in full with such
omissions, variations and insertions, if any, as may be appropriate to make the same conform to the provisions of this Supplemental Indenture. 
 Section 3. Parties to Include Successors and Assigns. Whenever in this Supplemental Indenture either of the parties hereto is named or referred to, such reference shall, subject to the provisions of Articles XII and
XIII of the Original Indenture, be deemed to include the successors and assigns of such party, and all the covenants and agreements in this Supplemental Indenture contained by or on behalf of the Company, or by or on behalf of the Trustee, shall,
subject as aforesaid, bind and inure to the respective benefits of the respective successors and assigns of such parties, whether so expressed or not. 
 Section 4. Benefits Restricted to Parties and to Holders of Bonds and Coupons. Nothing in this Supplemental Indenture, expressed or implied, is intended or shall be construed, to confer upon, or
to give to, any person, firm or corporation, other than the parties hereto and the holders of the Bonds and coupons outstanding under the Indenture, any right, remedy or claim under or by reason of this Supplemental Indenture or any covenant,
condition, stipulation, promise or agreement hereof, and all the covenants, conditions, stipulations, promises and agreements in this Supplemental Indenture contained by and on behalf of the Company shall be for the sole and exclusive benefit of the
parties hereto, and of the holders of the Bonds and of the coupons outstanding under the Indenture. 
 Section 5. Execution in Counterparts. This Supplemental Indenture may be executed in several counterparts, and all such counterparts executed and delivered, each as an original, shall constitute but one and the same
instrument. 
  

 33 

 Section 6. Titles of Articles Not Part of the Forty-First Supplemental Indenture.
The Titles of the several Articles of this Supplemental Indenture shall not be deemed to be any part thereof. 
  

 34 

 IN WITNESS HEREOF, WESTAR ENERGY, INC., party hereto of the first part, has caused its corporate name to
be hereunto affixed, and this instrument to be signed and sealed by its Chairman of the Board, President, Chief Executive Officer or a Vice President, and its corporate seal to be attested by its Secretary or an Assistant Secretary for and in its
behalf, and The Bank of New York Mellon Trust Company, N.A., party hereto of the second part, has caused its corporate name to be hereunto affixed, and this instrument to be signed and sealed by its duly authorized officer and its corporate seal to
be attested by its duly authorized officer, all as of the day and year first above written. 
 (CORPORATE SEAL) 
  

			
	WESTAR ENERGY, INC.
		
	By:	 	  

		 	 Mark A. Ruelle, Executive Vice
 President and Chief
Financial Officer

  

			
	ATTEST:
		
	By:	 	  

		 	 Larry D. Irick, Vice President, General
 Counsel and
Corporate Secretary

  

			
	 Executed, sealed and delivered by WESTAR ENERGY, INC. in the presence of:

		
	 By:
	 	  

		
	 By:
	 	  

  

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

		
	By:	 	  

		 	                                        
, Vice President

  

			
	ATTEST:
		
	By:	 	  

		 	                                        
, Vice President

  

			
	 Executed, sealed and delivered by
THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A. in the presence of:

		
	 By:
	 	  

		
	 By:
	 	  

					
	STATE OF KANSAS	  	)	  	
		  	:	  	ss.:
	COUNTY OF SHAWNEE	  	)	  	

 BE IT REMEMBERED, that on this
                     day of November, 2008, before me, the undersigned, a Notary Public within and for the County and State aforesaid, personally
came Mark A. Ruelle and Larry D. Irick, of Westar Energy, Inc., a corporation duly organized, incorporated and existing under the laws of the State of Kansas, who are personally known to me to be such officers, and who are personally known to me to
be the same persons who executed as such officers the within instrument of writing, and such persons duly acknowledged the execution of the same to be the act and deed of said corporation. 
 IN WITNESS WHEREOF, I have hereunto subscribed my name and affixed my official seal on the day and year last above written. 
  

	
	                                       
                                         
    
	Notary Public
	My Commission Expires
                                        

  

 S-2 

					
	STATE OF ILLINOIS	  	)	  	
		  	:	  	ss.:
	COUNTY OF COOK	  	)	  	

 BE IT REMEMBERED, that on this
                     day of November, 2008, before me, the undersigned, a Notary Public within and for the County and State aforesaid, personally
came                                      and
                                        , of The
Bank of New York Mellon Trust Company, N.A., a national banking association, who are personally known to me to be such officers, and who are personally known to me to be the same persons who executed as such officers the within instrument of
writing, and such persons duly acknowledged the execution of the same to be the act and deed of said corporation. 
  

	
	                                       
                                         
    
	Notary Public
	My Commission Expires
                                        

  

 S-3 

					
	STATE OF KANSAS	 	)	  	
		 	:	  	ss.:
	COUNTY OF SHAWNEE	 	)	  	

 BE IT REMEMBERED, that on this
                     day of November, 2008, before me, the undersigned, a Notary Public within and for the County and State aforesaid, personally
came Mark A. Ruelle and Larry D. Irick, of Westar Energy, Inc., a corporation duly organized, incorporated and existing under the laws of the State of Kansas, who are personally known to me to be such officers, being by me respectively duly sworn,
did each say that the said Mark A. Ruelle is Executive Vice President and Chief Financial Officer and that the said Larry D. Irick is Vice President, General Counsel and Corporate Secretary of said corporation, that the consideration of and for the
foregoing instrument was actual and adequate, that the same was made and given in good faith, for the uses and purposes therein set forth and without any intent to hinder, delay, or defraud creditors or purchasers. 
 IN WITNESS WHEREOF, I have hereunto subscribed my name and affixed my official seal on the day and year last above written. 
  

	
	  

	Notary Public
	My Commission Expires
                                        

  

 S-4 

 APPENDIX A 
 to 
 FORTY-FIRST SUPPLEMENTAL INDENTURE 
 Dated as of November 25, 2008 
 Westar Energy, Inc. 
 to 
 The Bank of New York Mellon Trust
Company, N.A. 
 (as successor to 
 Harris Trust and Savings Bank) 
  
  
 DESCRIPTION OF PROPERTIES

 LOCATED IN THE STATE OF KANSAS 
 FIRST 
 PARCELS OF REAL ESTATE 
  
  
 Shawnee County

 800 Kansas Building Site 
 Tract 1:

 Lots 254, 256, 258, 260, 262, and 264 on Kansas Avenue, in the City of Topeka,
Shawnee County, Kansas, AND ALSO the West  1/2 of the vacated alley lying East of and adjoining said Lots 254, 256, 258, 260, 262
and 264. 
 Tract 2: 
 Lots 103, 105, 107, 109, and 111 on Eighth Avenue East in the City of Topeka, Shawnee County,
Kansas, together with the East  1/2 of the vacated alley lying West and adjoining said Lot 103 and the North  1/2 of the vacated alley lying South and adjoining said East  1/2 of vacated alley and South of and adjoining Lots 103, 105 and the West 5 feet of Lot 107 aforesaid. 

 Tract 3: 
 The South  1/2 of vacated alley North of and adjoining the East 65 feet of Lot 266 on Kansas Avenue, in the City of Topeka, Shawnee County, Kansas. 
 Tract 4: 
 All of Lots 113, 115, 117, 119 on
Eighth Avenue East, in the City of Topeka, Shawnee County, Kansas. 
 The above described tracts together comprising a parcel of land in the
City of Topeka, Shawnee County, Kansas, described as follows: 
 Beginning at the Northwest corner of Lot 254 on Kansas Avenue, in the City of Topeka, Shawnee
County, Kansas; thence South along the West line of Lots 254, 256, 258, 260, 262, and 264 on Kansas Avenue, a distance of 150.07 feet, more or less, to the Southwest corner of said Lot 264 on said Kansas Avenue; thence East along the South line of
said Lot 264 and the South line of the vacated alley (which is also the North line of Lot 266) a distance of 150.26 feet, more or less, to the Northeast corner of Lot 266 on said Kansas Avenue; thence North along the East line of the vacated alley,
a distance of 20 feet to a point on the South line of Lot 107 on Eighth Avenue East; thence East along the South line of Lots 107,109, 111, 113, 115, 117 and 119, a distance of 170.26 feet, more or less to the Southeast corner of Lot 119 on said
Eighth Avenue East; thence North along the East line of said Lot 119 a distance of 130.06 feet, more or less, to the Northeast corner of said Lot 119; thence West along the North line of odd Lots 103 to 119 both inclusive, on Eighth Avenue East, and
along the North line of vacated alley, and the North line of Lot 254 on Kansas Avenue (being also the South line of East 8th Street) a distance of 320.57 feet, more or less, to the point of beginning. 
 BARBER COUNTY 
 The South 275 feet of
the North 305 feet of the West 490 feet of the East 510 feet of the Northeast Quarter of Section 12, Township 31 South, Range 11 West, Barber County, Kansas, consisting of approximately 3.09 acres, more or less. 
 LYON COUNTY 
 Emporia Energy Center Plant Site 

 The Northeast Quarter of Section 34, Township 18 South, Range 12 East of the 6
th P.M., Lyon County, Kansas. 
 Emporia Energy
Center Additional Land 
 The West Half of the Southeast Quarter of
Section 34, Township 18 South, Range 12 East of the 6th P.M., Lyon County, Kansas. 
 ALSO: 
 The Southwest Quarter of Section 34, Township 18 South, Range 12 East of the 6th P.M., Lyon County, Kansas,
EXCEPT a tract described as follows: Beginning at the Southwest corner of said SW 1/4; thence northerly on the west line of said
SW 1/4 on an assumed bearing of North 00 degrees 00 minutes 10 seconds West for a distance of 829.79 feet; thence North 89
degrees 48 minutes 30 seconds East for a distance of 350.00 feet; thence South 00 degrees 00 minutes 10 seconds East for a distance of 829.72 feet to a point on the south line of said SW 1/4; thence South 89 degrees 48 minutes 30 seconds West along the said south line for a distance of 350.00 feet to the point of beginning. 
  

 2 

 RENO COUNTY 
 Parcel No. 1: 
 Commencing at the Northwest
corner of the Northwest  1/4 of Section 29, Township 22 South, Range 4 West of the 6th P.M., Reno County, Kansas, for a place of beginning; thence East along the North line of said Northwest  1/4, 1027.0 feet; thence with a deflection angle 89°02’ right – South 1324.03 feet to the South line of the North  1/2 of said Northwest  1/4; thence West along the South line of the North
 1/2 of said Northwest  1/4, 1043.57 feet to the West line of said Northwest  1/4; thence North along the West line of said
Northwest  1/4, 1323.16 feet to the place of beginning. 
 Parcel No. 2: 
 Commencing at the Northwest corner of the Northwest  1/4 of Section 29, Township 22 South,
Range 4 West of the 6th P.M., Reno County, Kansas; thence East along the North line of said Northwest  1/4, 1027.0 feet for a place of beginning; thence continuing East along the North line of said Northwest  1/4, 1628.10 feet to the Northeast corner of said Northwest  1/4; thence
South along the East line of said Northwest  1/4, 1324.58 feet to the Southeast corner of the North  1/2 of said Northwest  1/4; thence West along the South line of the North  1/2 of said Northwest  1/4, 1607.57 feet to a point that is 1043.57 feet East of the Southwest corner of the North  1/2 of said Northwest  1/4; thence with a deflection angle 88°34’52” right – North 1324.03 feet to the place of beginning. 
 All of the above property is also known as the North  1/2 of the Northwest  1/4 of Section 29, Township
22 South, Range 4 West of the 6th P.M., Reno County, Kansas. 
 SEDGWICK COUNTY 
 Goddard Substation 
 The South 500 feet of the West 800 feet of the South Half of the Northwest Quarter of Section 29, Township 27 South, Range 2 West of the Sixth
Principle Meridian, Sedgwick County, Kansas. 
 WABAUNSEE COUNTY 
 A Tract of Land, situated in the South One-half (S 1/2) of Section 36, Township 13 South, Range 11 East of the 6th P.M., Wabaunsee County, Kansas,
more particularly described as follows: 
 COMMENCING at the Southeast Corner of said Section 36 (Found 1/2" Iron Bar); thence
North 01°32'54" West along the East line of said Section 36, a distance of 189.38 feet to a point, said point bears South 01°32'54" East, a distance of 5101.43 feet from the Northeast Corner of said Section 36
(Found 1/2" Iron Bar); thence South 88°27'06" West, a distance of 1131.59 feet to the Most Northerly Corner of Lands Conveyed to The Secretary of Transportation of the State of Kansas in Record Book 68, Page 289 [Found 5/8"
Iron Bar (Bent)], said corner being the POINT OF BEGINNING; thence South 22°44'48" West along the Westerly line of said Lands in Record Book 68, Page 289, a distance of 208.71 feet to the Southwest Corner of said Lands conveyed in
Record Book 68, Page 289, said corner being at the intersection of the South line of the Southeast Quarter of said Section 36 and the Northerly Right of Way line of K4/K99 as it presently exists (Found 5/8" Iron Bar); thence North
83°19'54" West along said Right of Way, a distance of 173.90 feet; thence South 88°24'10" West along said Right of Way, a distance of 336.61 feet; thence South 89°04'54" West along said Right of Way, a
distance of 62.49 feet; thence North 00°04'22" East, a distance of 564.66 feet; thence South 89°55'34" East, a distance of 652.17 feet; thence South 00°04'26" West, a distance of 381.15 feet to the POINT OF
BEGINNING. Containing 359,025 square feet (8.24 acres), more or less. 
 WICHITA COUNTY 
 A tract located in the Southeast Quarter (SE/4) of Section Twelve (12), Township Eighteen
(18) South, Range Thirty-Five (35) West of the 6th P.M., Wichita County, Kansas, more particularly described as follows: Beginning at the
Southeast corner of said Section 12 being a found Limestone; thence North 88o37'55" West on the South line of said Section 12 a distance of 290.00 feet to a set  1/2” R-bar, (Parks cap, typical); thence North 1o46'14" East a distance of 380.00 feet to a set  1/
2” R-bar; thence South 88o37'55" East a distance of 290.00 feet to a set  1/2” R-bar; thence South 1o46'14" West on the East line of said Section 12 a distance of 380.00 feet to a point of beginning, containing 2/53 acres, more or less. 

  

 3 

 AFFIDAVIT 
  

					
	STATE OF KANSAS	  	)	  	
		  	)	  	ss:
	COUNTY OF SHAWNEE	  	)	  	

 Anthony D. Somma, being first duly sworn, states as follows: 
 1. That he is the duly elected, qualified, and acting Treasurer of Westar Energy, Inc., a Kansas corporation (the “Company”), and he is
in charge of the records of the Company showing the total valuation of its properties and the valuation of said properties in the state in which it operates. 
 2. That from the records in his office and to the best of his knowledge and belief, and in accordance with K.S.A. 79-3106, the assessed valuation of the Company’s properties in all states and the relative
percentage of said assessed valuation is: 
  

					
	 	  	ASSESSED VALUATION	  	PERCENT OF TOTAL
	 Kansas
	  	$465,538,095	  	100.00%

 3. The relative assessed valuation within the State of Kansas applied to the mortgage registration
fee of the $300,000,000.00 aggregate principal amount of First Mortgage, 8.625% Series due 2018, the “Bonds,” recited in the form of the Forty-First Supplemental Indenture, dated as of November 25, 2008 (supplemental to the
Company’s Indenture of Mortgage and Deed of Trust, dated as of July 1, 1939), amounts to $300,000,000.00. 
 4. That of the
$300,000,000.00 principal indebtedness allocated to the State of Kansas in the Forty-First Supplemental Indenture, $125,000 was included as principal indebtedness under the original Mortgage and Deed of trust and subsequent Supplemental Indentures
of which $1,183,840,000 was allocated to the State of Kansas and upon which the required mortgage registration tax was paid. As of this date the amount of the Kansas allocated indebtedness outstanding is $1,183,715,000, leaving $125,000 exempt from
tax under K.S.A. 79-3102 as shown on Exhibit A attached hereto. 
 5. That after applying said $125,000 credit against the Kansas allocated
amount of $300,000,000.00, the amount subject to the requirements of K.S.A. 79-3102 is $299,875,000. 
  

 4 

 6. That the total payment required under K.S.A. 79-3102 for and on account of the issuance of said
$300,000,000.00 aggregate principal amount of the Bonds is $779,675.00. 
 7. That the above-mentioned $300,000,000.00 aggregate principal
amount of Bonds are to be issued on or about November 25, 2008. 
 8. That in connection with the issuance of said $300,000,000.00
aggregate principal amount of the Bonds and the recordation of said Forty-First Supplemental Indenture, the payment required under K.S.A. 79-3102 is $779,879.00. 
 Further affiant saith not. 
 Signed this 25th day of November, 2008. 
  

			
		
	 	 	 
		 	
	Treasurer	 	

 Subscribed and sworn to before me this 25th day of November, 2008. 
  

			
		
	 	 	 
	Notary Public	 	

 My Appointment Expires:  
 The above computation of the total mortgage registration tax due, based on the $300,000,000.00 aggregate principal amount of the above-mentioned Bonds is approved. 
 Dated this      day of
                        , 2008. 
  

					
	  
	  		  	
	Register of Deeds, Shawnee County, Kansas	  		  	

 Forty-First Supplemental Indenture recorded in Book
                    ,
Page                         , Shawnee County Register of Deeds. 
  

 5 

 “EXHIBIT A” 
  

									
	Supplemental
Indenture to
Mortgage	  	Book/Page or
File Number	  	Kansas
Allocation
on Which Tax
Paid	  	Cumulative
Credit
	Mortgage	  	778/216	  	 	NA	  	 	NA
	1	  	778/346	  	$	26,500,000	  	$	26,500,000
	2	  	1011/184	  	 	10,000,000	  	 	36,500,000
	4	  	1029/150	  	 	6,500,000	  	 	43,000,000
	5	  	1034/207	  	 	32,500,000	  	 	75,500,000
	7	  	1104/291	  	 	5,250,000	  	 	80,750,000
	8	  	1120/299	  	 	4,750,000	  	 	85,500,000
	9	  	1209/559	  	 	8,000,000	  	 	93,500,000
	10	  	1453/74	  	 	13,000,000	  	 	106,500,000
	11	  	1699/290	  	 	19,000,000	  	 	125,500,000
	12	  	1739/79	  	 	20,000,000	  	 	145,500,000
	13	  	1873/646	  	 	35,000,000	  	 	180,500,000
	14	  	1916/293	  	 	45,000,000	  	 	225,500,000
	15	  	1951/467	  	 	32,000,000	  	 	257,500,000
	16	  	1962/949	  	 	30,000,000	  	 	287,500,000
	17	  	1991/903	  	 	35,000,000	  	 	322,500,000
	20	  	2149/361	  	 	25,000,000	  	 	347,500,000
	21	  	2161/653	  	 	60,000,000	  	 	407,500,000
	22	  	2194/131	  	 	58,500,000	  	 	466,000,000
	24	  	2401/33	  	 	50,000,000	  	 	516,000,000
	25	  	2501/925	  	 	44,940,800	  	 	560,940,800
	26	  	2578/75	  	 	65,821,300	  	 	626,762,100
	27	  	2713/228	  	 	321,937,500	  	 	948,699,600
	33	  	3144/930	  	 	128,962,823	  	 	1,077,662,423
	39	  	4223/006	  	 	0	  	 	1,077,662,423
	40	  	4485/237	  	 	106,177,577	  	 	1,183,840,000
		
	Bonds Currently Outstanding Based on Kansas Allocated Tax	  	 	1,183,715,000
		
	Balance of Credit Available to be Applied to Current Issue	  	 	125,000Second Amendment between Neutral Tandem, Inc. and Rian Wren

 Exhibit 10.1 
 SECOND AMENDMENT TO 
 EMPLOYMENT AGREEMENT 
 This Second Amendment to Employment Agreement (“Amendment”) is made by and between Neutral Tandem, Inc. (the “Company”) and Rian J. Wren (the “Executive”).
This Amendment is made as of November 21, 2008. 
 BACKGROUND 
 1. The Company and Executive entered into an Employment Agreement dated February 6, 2006, as amended by the Amendment dated January 21, 2008
(collectively, the “Agreement”). 
 2. The parties wish to amend the Agreement to reflect the following change. 
 THE AGREEMENT 
 The parties agree as follows:

 1. Definitions. All capitalized terms not defined in this Second Amendment have the same meanings given to those terms in the
Agreement (other than the definitions of “Change in Control” and “Good Reason,” which definitions are amended pursuant to this Second Amendment as set forth below). 
 2. Section 6.2. Section 6.2 of the Agreement is hereby deleted in its entirety and replaced with the following: 
 6.2 Termination Without Cause, Etc. In the event Executive’s employment hereunder is terminated (i) by the Company
without Cause, (ii) by Executive for Good Reason (as defined below), or (iii) by the Company without Cause or by Executive for Good Reason within six (6) months following a Change of Control (as defined below), in each case subject to
his compliance with the agreements referred to or set forth in Section 4, (x) any unpaid base salary through the date of termination, and any accrued vacation pay, and (y) severance pay equal to twelve (12) months’ base
salary at the salary rate in effect on the date of termination; provided, however, that in the case of a termination pursuant to Section 6.2(iii), such severance pay shall be equal to twenty-four (24) months’ base salary at the rate
in effect on the date of termination. Subject to the provisions of Section 7.10(b), any severance payable pursuant to this Section 6.2 shall be paid in equal installments in accordance with the Company’s payroll payment schedule in
effect on the date Executive’s employment terminates, provided that any such payment that would (absent this proviso) be made less than sixty (60) days after the date Executive’s employment terminates shall instead be paid on the
sixtieth (60th) day after the date Executive’s employment terminates. It is a condition precedent to the Company’s obligation to make any severance payments to Executive pursuant to this Section 6.2 that Executive executes a
general release, in form and substance acceptable to the Board, in favor of the Company, the members of the Board and its other affiliates releasing all claims arising out of Executive’s employment and his termination of employment, and that
such release shall be executed (and no longer subject to revocation, if applicable) within sixty (60) days following the date Executive’s employment terminates. 
 3. Section 6.4(b). Section 6.4(b) of the Agreement is hereby deleted in its entirety and replaced with the following: 
 (b) The term “Change of Control” of the Company shall mean any transaction or series of related transactions
whether by consolidation, merger, sale or issuance of equity securities, or sale or transfer of all or substantially all of the Company’s assets, or otherwise, in which any one person, or more than one person acting as a group,
(i) acquires ownership of stock of the Company that, together with stock held by such person or group, constitutes more than 50 percent of the total fair market value or total voting power of the stock of the Company or (ii) acquires (or
has acquired during the 12-month period ending on the date of the most recent acquisition by such person or persons) assets from the Company that have a total gross fair market value equal to or more than forty (40) percent of the total gross
fair market value of all of the assets of the Company immediately before such acquisition or acquisitions (excluding any asset transferred to (A) shareholder of the Company (immediately before the asset transfer) in exchange for or with respect
to its stock, (B) an entity, fifty (50) percent or more of the total value or voting power of which is owned, directly or indirectly, by the Company, (C) a person, or more than one person acting as a group, that owns, directly or
indirectly, fifty (50) percent or more of the total value or voting power of all the outstanding stock of the Company, or (D) an entity, at least 50 percent of the total value or voting power of which is owned, directly or indirectly, by a
person described in clause (ii)(C) of this definition. This definition is intended to comply with the definitions of “change in ownership” of a corporation and “change in ownership of a substantial portion of the assets” of a
corporation set forth in the Treasury Regulations issued under section 409A(a)(2)(A)(v) of the Internal Revenue Code and shall be interpreted in a manner consistent with such intention. 

 4. Section 6.4(d). Section 6.4(d) of the Agreement is hereby deleted in its entirety and
replaced with the following: 
 (d) The term “Good Reason” shall mean, without Executive’s
written consent: (i) a material adverse change in Executive’s title or the duties assigned to Executive or (ii) any material failure by the Company to comply with its obligations under this Agreement, but in each such case only if
Executive has provided notice to the Company of the existence of the condition described in clause (i) or (ii) of this definition within ninety (90) days following of the initial existence of the condition, and the Company has not
remedied such condition within thirty (30) days after receiving such notice. 
 5. Section 7.10(b). Section 7.10(b) of
the Agreement is amended by replacing “Prop. Reg. § 1.409A-1(i)” with “section 1.409A-1(i) of the Treasury Regulations” and by replacing “Prop. Reg. § 1.409A-1(h)(ii)” with “section 1.409A-1(h)(1)(ii) of
the Treasury Regulations.” 
 6. Section References. Section titles used in this Second Amendment have no substantive meaning and
are not a part of the parties’ agreement. 
 7. Successors and Assigns. This Second Amendment is binding upon and inures to the
benefit of the successors and permitted assigns of the parties. 
 8. Entire Agreement. Except as expressly modified by this Second
Amendment, the Agreement is and will remain in full force and effect in accordance with its terms and constitutes the legal and binding obligations of the Company and Executive. This Second Amendment, including the Agreement, is the complete
agreement of the parties and supersedes any prior agreements or representations, whether oral or written, with respect to the subject matter of this Second Amendment. 
 The Company and Executive have executed this Second Amendment as of the date first set forth above. 
  

									
	 Neutral Tandem, Inc.
	 		 	Rian J. Wren
					
	 By:
	 	  
	 		 	By:	 	  

	 Name:
	 	  
	 		 		 	
	 Title:

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