Document:

Sunoco Partners LLC Executive Summary Compensation Sheet for 2008

 Exhibit 10.15 
 Sunoco Partners LLC 
 Executive Compensation Summary Sheet 
 for 2008 
 The table below presents 2008 summary
information for named executive officers of Sunoco Partners LLC, with regard to: base salary. 
 2008 EXECUTIVE COMPENSATION1 
  

				
	 Name and Title
	  	2008 Base Salary
($)
	 Deborah M. Fretz
 President and Chief Executive Officer
	  	$	500,000
	 Neal E. Murphy.
 Vice President and Chief Financial Officer
	  	$	297,440
	 Christopher W. Keene
 Vice President, Business Development
	  	$	264,368
	 Bruce D. Davis, Jr.
 Vice President, General Counsel & Secretary
	  	$	266,090
	 David A. Justin
 Vice President, Eastern Operations
	  	$	262,500

 Note to table: 
  

	(1)	The base salaries shown in the foregoing table were approved at the January 26, 2008 meeting of the Compensation Committee of the Board of Directors of Sunoco Partners LLC.Sunoco Partners LLC Independent Director Compensation Summary Sheet for 2008

 Exhibit 10.16 
 Sunoco Partners LLC 
 Independent Director Compensation Summary Sheet 
 for 2008 
 Directors who are employees
of Sunoco Partners LLC or its affiliates receive no additional compensation for service on the general partner’s board of directors or any committees of the board. The table below summarizes the 2008 compensation program for independent
directors of Sunoco Partners LLC 
 2008 INDEPENDENT DIRECTOR COMPENSATION SUMMARY 
  

							
	 Component
	  	 Amount
 ($)
	  	 Medium of Payment
	  	 Timing of Payment

	 Annual Retainer
	  	21,000 per year	  	Restricted Units	  	$5,250 credited quarterly1
		  	21,000 per year	  	Cash	  	$5,250 paid quarterly
	 Board Meeting Fee
	  	1,500 per meeting	  	Cash	  	Paid quarterly
	 Committee Meeting Fee
	  	1,000 per meeting	  	Cash	  	Paid quarterly
	 Compensation Committee Chair Retainer
	  	3,500 per year	  	Cash	  	$ 875 paid quarterly
	 Audit/Conflicts Committee Chair Retainer
	  	8,000 per year	  	Cash	  	$2,000 paid quarterly

 Note to table: 
  

	(1)	The fair market value of each quarterly payment of Restricted Units is calculated as of the payment date. The portion of the annual retainer paid in the form of Restricted Units is
required to be deferred, and is credited to each independent director’s account in the Sunoco Partners LLC Directors’ Deferred Compensation Plan. 

 In addition to the foregoing, each independent director is reimbursed for out-of-pocket expenses in connection with attending meetings of the board of directors or committees.Fiftieth Supplemental Indenture dated February 22, 2008

 Exhibit 4.1 
  
  
 KANSAS GAS AND ELECTRIC COMPANY 
 TO 
 THE BANK OF NEW YORK TRUST COMPANY, N.A.

 (successor to BNY Midwest Trust Company) 
 and 
 JUDITH L. BARTOLINI 
 (successor to W. A. Spooner, Henry A. Theis, Oliver R. Brooks, 
 Wesley L. Baker, Edwin F. McMichael and R.
Amundsen) 
 as Trustees under Kansas Gas and Electric Company’s 
 Mortgage and Deed of Trust, Dated as of April 1, 1940 
 FIFTIETH SUPPLEMENTAL
INDENTURE 
 Providing, among other things, for 
 First Mortgage Bonds, 5.57% Series due March 17, 2012 
 Dated as of February 22, 2008

  
  

 FIFTIETH SUPPLEMENTAL INDENTURE 
 INDENTURE, dated as of February 22, 2008, between Kansas Gas and Electric Company, a corporation of the State of Kansas (formerly named KCA
Corporation and successor by merger to Kansas Gas and Electric Company, a corporation of the State of Kansas, hereinafter sometimes called the “Company-Kansas”), whose post office address is 120 East First Street, Wichita, Kansas 67202
(hereinafter sometimes called the “Company”), and The Bank of New York Trust Company, N.A., a national banking association, whose post office address is 2 North LaSalle Street, Suite 1020, Chicago, Illinois 60602 (successor to BNY Midwest
Trust Company (the “Corporate Trustee”)), and Judith L. Bartolini (successor to W.A. Spooner, Henry A. Theis, Oliver R. Brooks, Wesley L. Baker, Edwin F. McMichael and R. Amundsen, and being hereinafter sometimes called the
“Individual Trustee”), whose post office address is 2 North LaSalle Street, Suite 1020, Chicago, Illinois 60602 (the Corporate Trustee and the Individual Trustee being hereinafter together sometimes called the “Trustees”), as
Trustees under the Mortgage and Deed of Trust, dated as of April 1, 1940 (hereinafter called the “Mortgage”), which Mortgage was executed and delivered by Kansas Gas and Electric Company, a corporation of the State of West Virginia to
which the Company-Kansas was successor by merger (hereinafter sometimes called the “Company-West Virginia”), to secure the payment of bonds issued or to be issued under and in accordance with the provisions of the Mortgage, reference to
which Mortgage is hereby made, this Indenture (hereinafter sometimes called the “Fiftieth Supplemental Indenture”) being supplemental thereto; 
 WHEREAS, the Company-West Virginia caused the Mortgage to be filed for record as a mortgage of real property and as a chattel mortgage in the offices of the Registers of Deeds in various counties in the State of
Kansas, and on April 25, 1940 paid to the Register of Deeds of Sedgwick County, Kansas, that being the County in which the Mortgage was first filed for record, the sum of $40,000 in payment of the Kansas mortgage registration tax as provided by
Section 79-3101 et seq., General Statutes of Kansas 1935; and 
 WHEREAS, by the Mortgage, the Company-West Virginia covenanted
that it would execute and deliver such supplemental indenture or indentures and such further instruments and do such further acts as might be necessary or proper to carry out more effectually the purposes of the Mortgage and to make subject to the
lien of the Mortgage any property thereafter acquired, intended to be subject to the lien thereof; and 
 WHEREAS, an instrument, dated
May 31, 1949, was executed by the Company-West Virginia appointing Oliver R. Brooks as Individual Trustee in succession to said Henry A. Theis, resigned, under the Mortgage, and by Oliver R. Brooks accepting the appointment as Individual
Trustee under the Mortgage in succession to said Henry A. Theis, which instrument was filed for record in the offices of the Registers of Deeds in various counties in the State of Kansas; and 
 WHEREAS, an instrument, dated March 3, 1958, was executed by the Company-West Virginia appointing Wesley L. Baker as Individual Trustee in
succession to said Oliver R. Brooks, resigned, under the Mortgage, and by Wesley L. Baker accepting the appointment as Individual Trustee under the Mortgage in succession to said Oliver R. Brooks, which instrument was filed for record in the offices
of the Registers of Deeds in various counties in the State of Kansas; and 

 WHEREAS, an instrument, dated November 20, 1969, was executed by the Company-West Virginia
appointing Edwin F. McMichael as Individual Trustee in succession to said Wesley L. Baker, resigned, under the Mortgage, and by Edwin F. McMichael accepting the appointment as Individual Trustee under the Mortgage in succession to said Wesley L.
Baker, which instrument was filed for record in the offices of the Registers of Deeds in various counties in the State of Kansas; and 
 WHEREAS, by the Twenty-seventh Supplemental Indenture mentioned below, the Company-Kansas, among other things, appointed R. Amundsen as Individual Trustee in succession to said Edwin F. McMichael, resigned, under the Mortgage, and by R.
Amundsen accepting the appointment as Individual Trustee under the Mortgage in succession to said Edwin F. McMichael; and 
 WHEREAS, by the
Thirty-second Supplemental Indenture mentioned below, the Company-Kansas, among other things, appointed W. A. Spooner as Individual Trustee in succession to said R. Amundsen, resigned, under the Mortgage, and by W. A. Spooner accepting the
appointment as Individual Trustee under the Mortgage in succession to said R. Amundsen; and 
 WHEREAS, by the Fortieth Supplemental
Indenture mentioned below, the Company-Kansas, among other things, appointed Judith L. Bartolini as Individual Trustee in succession to said W.A. Spooner resigned, under the Mortgage, and by Judith L. Bartolini accepting the appointment as
Individual Trustee under the Mortgage in succession to said W.A. Spooner; and 
 WHEREAS, the Company-West Virginia executed and delivered to
the Trustees a First Supplemental Indenture, dated as of June 1, 1942 (which supplemental indenture is hereinafter sometimes called the “First Supplemental Indenture”); and 
 WHEREAS, the Company-West Virginia caused the First Supplemental Indenture to be filed for record as a mortgage of real property and as a chattel
mortgage in the offices of the Registers of Deeds in various counties in the State of Kansas, but paid no mortgage registration tax in connection with the recordation of the First Supplemental Indenture, no such tax having been payable in connection
with such recordation; and 
 WHEREAS, the Company-West Virginia executed and delivered to the Trustees the following supplemental
indentures: 
  

					
	 Designation
	  	 Dated as of
	  	 
	Second Supplemental Indenture	  	March 1, 1948	  	
	Third Supplemental Indenture	  	December 1, 1949	  	
	Fourth Supplemental Indenture	  	June 1, 1952	  	
	Fifth Supplemental Indenture	  	October 1, 1953	  	
	Sixth Supplemental Indenture	  	March 1, 1955	  	
	Seventh Supplemental Indenture	  	February 1, 1956	  	
	Eighth Supplemental Indenture	  	January 1, 1961	  	
	Ninth Supplemental Indenture	  	May 1, 1966	  	
	Tenth Supplemental Indenture	  	March 1, 1970	  	
	Eleventh Supplemental Indenture	  	May 1, 1971	  	
	Twelfth Supplemental Indenture	  	March 1, 1972	  	

  

 -2- 

 which supplemental indentures are hereinafter sometimes called the Second through Twelfth Supplemental Indentures,
respectively; and 
 WHEREAS, the Company-West Virginia caused the Second through Eighth Supplemental Indentures to be filed for record as a
mortgage of real property and as a chattel mortgage in the offices of the Registers of Deeds in various counties in the State of Kansas, and caused the Ninth through Twelfth Supplemental Indentures to be filed for record as a mortgage of real
property in the offices of the Registers of Deeds in various counties in the State of Kansas and as a chattel mortgage in the Office of the Secretary of State of Kansas, and on the following dates paid to the Register of Deeds of Sedgwick County,
Kansas, that being the County in which the Second through Twelfth Supplemental Indentures were first filed for record as a mortgage of real property, the following amounts: 
  

				
	 Date
	  	Amount
	 March 30, 1948
	  	$	12,500
	 December 7, 1949
	  	 	7,500
	 June 17, 1952
	  	 	30,000
	 October 21, 1953
	  	 	25,000
	 March 22, 1955
	  	 	25,000
	 March 5, 1956
	  	 	17,500
	 January 24, 1961
	  	 	17,500
	 May 17, 1966
	  	 	40,000
	 March 10, 1970
	  	 	87,500
	 May 19, 1971
	  	 	87,500
	 March 23, 1972
	  	 	62,500

 such amounts being in payment of the Kansas mortgage registration tax as provided by the then currently applicable
sections of the statutes of the State of Kansas in effect on those dates; and 
 WHEREAS, the Company-West Virginia was merged into the
Company-Kansas on May 31, 1973; and 
 WHEREAS, in order to evidence the succession of the Company-Kansas to the Company-West Virginia
and the assumption by the Company-Kansas of the covenants and conditions of the Company-West Virginia in the bonds and in the Mortgage contained, and to enable the Company-Kansas to have and exercise the powers and rights of the Company-West
Virginia under the Mortgage in accordance with the terms thereof, the Company-Kansas executed and delivered to the Trustees a Thirteenth Supplemental Indenture, dated as of May 31, 1973 (which supplemental indenture is hereinafter sometimes
called the “Thirteenth Supplemental Indenture”); and 
 WHEREAS, the Company-Kansas caused the Thirteenth Supplemental Indenture to
be filed for record as a mortgage of real property in the offices of the Registers of Deeds in various counties in the State of Kansas and as a chattel mortgage in the Office of the Secretary of State 

  

 -3- 

 
of Kansas, but paid no mortgage registration tax in connection with the recordation of the Thirteenth Supplemental Indenture, no such tax having been payable
in connection with such recordation; and 
 WHEREAS, the Company-Kansas executed and delivered to the Trustees the following supplemental
indentures: 
  

			
	 Designation
	  	 Dated as of

	Fourteenth Supplemental Indenture	  	July 1, 1975
	Fifteenth Supplemental Indenture	  	December 1, 1975
	Sixteenth Supplemental Indenture	  	September 1, 1976
	Seventeenth Supplemental Indenture	  	March 1, 1977
	Eighteenth Supplemental Indenture	  	May 1, 1977
	Nineteenth Supplemental Indenture	  	August 1, 1977
	Twentieth Supplemental Indenture	  	March 15, 1978
	Twenty-first Supplemental Indenture	  	January 1, 1979
	Twenty-second Supplemental Indenture	  	April 1, 1980
	Twenty-third Supplemental Indenture	  	July 1, 1980
	Twenty-fourth Supplemental Indenture	  	August 1, 1980
	Twenty-fifth Supplemental Indenture	  	June 1, 1981
	Twenty-sixth Supplemental Indenture	  	December 1, 1981
	Twenty-seventh Supplemental Indenture	  	May 1, 1982
	Twenty-eighth Supplemental Indenture	  	March 15, 1984
	Twenty-ninth Supplemental Indenture	  	September 1, 1984
	Thirtieth Supplemental Indenture	  	September 1, 1984
	Thirty-first Supplemental Indenture	  	February 1, 1985
	Thirty-second Supplemental Indenture	  	April 15, 1986
	Thirty-third Supplemental Indenture	  	June 1, 1991
	Thirty-fourth Supplemental Indenture	  	March 31, 1992
	Thirty-fifth Supplemental Indenture	  	December 17, 1992
	Thirty-sixth Supplemental Indenture	  	August 12, 1993
	Thirty-seventh Supplemental Indenture	  	January 15, 1994
	Thirty-eighth Supplemental Indenture	  	March 1, 1994
	Thirty-ninth Supplemental Indenture	  	April 15, 1994
	Fortieth Supplemental Indenture	  	June 28, 2000
	Forty-first Supplemental Indenture	  	June 6, 2002
	Forty-second Supplemental Indenture	  	March 12, 2004
	Forty-third Supplemental Indenture	  	June 1, 2004
	Forty-fourth Supplemental Indenture	  	May 6, 2005
	Forty-fifth Supplemental Indenture	  	March 17, 2006
	Forty-sixth Supplemental Indenture	  	June 1, 2006
	Forty-seventh Supplemental Indenture	  	March 16, 2007
	Forth-eighth Supplemental Indenture	  	July 10, 2007
	Forty-ninth Supplemental Indenture	  	October 12, 2007

 which supplemental indentures are hereinafter sometimes called the Fourteenth through Forty-ninth Supplemental
Indentures, respectively; and 
  

 -4- 

 WHEREAS, the Company-Kansas caused the Fourteenth Supplemental Indenture to be filed for record as a
mortgage of real property in the offices of the Registers of Deeds in various counties in the State of Kansas and as a chattel mortgage in the Office of the Secretary of State of Kansas; and 
 WHEREAS, the Company-Kansas caused the Fifteenth Supplemental Indenture to be filed for record as a mortgage of real property in the office of the
Register of Deeds of Sedgwick County, Kansas (filed on December 10, 1975, Film 169, page 363), and as a chattel mortgage in the Office of the Secretary of State of Kansas (filed on December 10, 1975 and indexed as
No. 325,911); and 
 WHEREAS, the Company-Kansas caused the Sixteenth Supplemental Indenture to be filed for record as a mortgage of
real property in the office of the Register of Deeds of Sedgwick County, Kansas (filed on September 29, 1976, Film 211, page 363), and as a chattel mortgage in the Office of the Secretary of State of Kansas (filed on
September 29, 1976 and indexed as No. 363,835); and 
 WHEREAS, the Company-Kansas caused the Seventeenth Supplemental Indenture to
be filed for record as a mortgage of real property in the office of the Register of Deeds of Sedgwick County, Kansas (filed on March 16, 1977, Film 234, page 492), and as a chattel mortgage in the Office of the Secretary of State of
Kansas (filed on March 1, 1977 and indexed as No. 384,759); and 
 WHEREAS, the Company-Kansas caused the Eighteenth Supplemental
Indenture to be filed for record as a mortgage of real property in the office of the Register of Deeds of Sedgwick County, Kansas (filed on May 26, 1977, Film 246, page 655), and as a chattel mortgage in the Office of the Secretary of
State of Kansas (filed on May 26, 1977 and indexed as No. 394,573); and 
 WHEREAS, the Company-Kansas caused the Nineteenth
Supplemental Indenture to be filed for record as a mortgage of real property in the office of the Register of Deeds of Sedgwick County, Kansas (filed on August 31, 1977, Film 263, page 882), and as a chattel mortgage in the Office of
the Secretary of State of Kansas (filed on September 1, 1977 and indexed as No. 406,577); and 
 WHEREAS, the Company-Kansas caused
the Twentieth Supplemental Indenture to be filed for record as a mortgage of real property in the office of the Register of Deeds of Sedgwick County, Kansas (filed on March 29, 1978, Film 297, pages 635-656), and as a chattel mortgage in
the Office of the Secretary of State of Kansas (filed on March 30, 1978 and indexed as No. 434,072); and 
 WHEREAS, the
Company-Kansas caused the Twenty-first Supplemental Indenture to be filed for record as a mortgage of real property in the office of the Register of Deeds of Sedgwick County, Kansas (filed on January 9, 1979, Film 345, page 648), and
as a chattel mortgage in the Office of the Secretary of State of Kansas (filed on January 10, 1979 and indexed as No. 470,851); and 
  

 -5- 

 WHEREAS, the Company-Kansas caused the Twenty-second Supplemental Indenture to be filed for record as a
mortgage of real property in the office of the Register of Deeds of Sedgwick County, Kansas (filed on April 2, 1980, Film 413, page 1,468), and as a chattel mortgage in the Office of the Secretary of State of Kansas (filed on
April 3, 1980 and indexed as No. 533,415); and 
 WHEREAS, the Company-Kansas caused the Twenty-third Supplemental Indenture to be
filed for record as a mortgage of real property in the office of the Register of Deeds of Sedgwick County, Kansas (filed on July 1, 1980, Film 425, page 1,003), and as a chattel mortgage in the Office of the Secretary of State of
Kansas (filed on July 2, 1980 and indexed as No. 546,185); and 
 WHEREAS, the Company-Kansas caused the Twenty-fourth Supplemental
Indenture to be filed for record as a mortgage of real property in the office of the Register of Deeds of Sedgwick County, Kansas (filed on August 28, 1980, Film 435, page 266), and as a chattel mortgage in the Office of the Secretary
of State of Kansas (filed on August 29, 1980 and indexed as No. 554,543); and 
 WHEREAS, the Company-Kansas caused the
Twenty-fifth Supplemental Indenture to be filed for record as a mortgage of real property in the office of the Register of Deeds of Sedgwick County, Kansas (filed on June 30, 1981, Film 483, page 1,512), and as a chattel mortgage in
the Office of the Secretary of State of Kansas (filed on June 30, 1981 and indexed as No. 601,270); and 
 WHEREAS, the
Company-Kansas caused the Twenty-sixth Supplemental Indenture to be filed for record as a mortgage of real property in the office of the Register of Deeds of Sedgwick County, Kansas (filed on December 30, 1981, Film 510, page 300),
and as a chattel mortgage in the Office of the Secretary of State of Kansas (filed on December 31, 1981 and indexed as No. 628,293); and 
 WHEREAS, the Company-Kansas caused the Twenty-seventh Supplemental Indenture to be filed for record as a mortgage of real property in the office of the Register of Deeds of Sedgwick County, Kansas (filed on May 6, 1982, Film 526,
page 1,141), and as a chattel mortgage in the Office of the Secretary of State of Kansas (filed on May 7, 1982 and indexed as No. 650,115); and 
 WHEREAS, the Company-Kansas caused the Twenty-eighth Supplemental Indenture to be filed for record as a mortgage of real property in the office of the Register of Deeds of Sedgwick County, Kansas (filed on
March 22, 1984, Film 645, page 1,524), and as a chattel mortgage in the Office of the Secretary of State of Kansas (filed on March 23, 1984 and indexed as No. 796,449); and 
 WHEREAS, the Company-Kansas caused the Twenty-ninth Supplemental Indenture to be filed for record as a mortgage of real property in the office of the
Register of Deeds of Sedgwick County, Kansas (filed on September 5, 1984, Film 681, page 763), and as a chattel mortgage in the Office of the Secretary of State of Kansas (filed on September 6, 1984 and indexed as
No. 852,425); and 
  

 -6- 

 WHEREAS, the Company-Kansas caused the Thirtieth Supplemental Indenture to be filed for record as a
mortgage of real property in the office of the Register of Deeds of Sedgwick County, Kansas (filed on September 12, 1984, Film 682, page 1,087), and as a chattel mortgage in the Office of the Secretary of State of Kansas (filed on
September 13, 1984 and indexed as No. 854,284); and 
 WHEREAS, the Company-Kansas caused the Thirty-third Supplemental Indenture
to be filed for record as a mortgage of real property in the office of the Register of Deeds of Sedgwick County, Kansas (filed on June 18, 1991, Film 1177, page 0876), and as a security agreement in the Office of Secretary of State of
Kansas (filed on June 18, 1991 and indexed as No. 1,693,446); and 
 WHEREAS, the Company-Kansas caused the Fortieth Supplemental
Indenture to be filed for record as a mortgage of real property in the office of the Register of Deeds of Sedgwick County, Kansas (filed on June 28, 2000, Film 2062, page 0053), and as a security agreement in the Office of Secretary
of State of Kansas (filed on June 28, 2000, and indexed as No. 3756913); and 
 WHEREAS, the Company on the following dates paid to
the Register of Deeds of Sedgwick County, Kansas, that being the County in which the Fourteenth through Thirtieth Supplemental Indentures, the Thirty-third Supplemental Indenture and the Fortieth Supplemental Indenture were first filed for record as
a mortgage of real property, the following amounts: 
  

				
	 Date
	  	Amount
	 July 2, 1975
	  	$	100,000
	 December 10, 1975
	  	 	48,750
	 September 29, 1976
	  	 	62,500
	 March 16, 1977
	  	 	62,500
	 May 26, 1977
	  	 	25,000
	 August 31, 1977
	  	 	6,100
	 March 29, 1978
	  	 	62,500
	 January 9, 1979
	  	 	36,250
	 April 2, 1980
	  	 	67,500
	 July 1, 1980
	  	 	37,500
	 August 28, 1980
	  	 	63,750
	 June 30, 1981
	  	 	75,000
	 December 30, 1981
	  	 	62,500
	 May 6, 1982
	  	 	100,000
	 March 22, 1984
	  	 	93,750
	 September 5, 1984
	  	 	75,000
	 September 12, 1984
	  	 	50,000
	 June 18, 1991
	  	 	334,100
	 June 28, 2000
	  	 	1,780,538.50

 such amounts being in payment of the Kansas mortgage registration tax as provided by the then currently applicable
sections of the statutes of the State of Kansas in effect on those dates; and 
  

 -7- 

 WHEREAS, the Company-Kansas caused the Thirty-first Supplemental Indenture to be filed for record as a
mortgage of real property in the office of the Register of Deeds of Sedgwick County, Kansas (filed on February 1, 1985, Film 707, page 378), and as a chattel mortgage in the Office of the Secretary of State of Kansas (filed on
February 4, 1985 and indexed as No. 895,468), but paid no mortgage registration tax in connection with the recordation of the Thirty-first Supplemental Indenture, no such tax having been payable in connection with such recordation; and

 WHEREAS, the Company-Kansas caused the Thirty-second Supplemental Indenture to be filed for record as a mortgage of real property in the
office of the Register of Deeds of Sedgwick County, Kansas (filed on April 16, 1986, Film 791, page 1,336), and as a chattel mortgage in the Office of the Secretary of State of Kansas (filed on April 17, 1986 and indexed as
No. 1,048,212), but paid no mortgage registration tax in connection with the recordation of the Thirty-second Supplemental Indenture, no such tax having been payable in connection with such recordation; and 
 WHEREAS, in order to evidence the succession of the Company to the Company-Kansas and the assumption by the Company of the covenants and conditions of
the Company-Kansas in the bonds and in the Mortgage contained, and to enable the Company to have and exercise the powers and rights of the Company-Kansas under the Mortgage in accordance with the terms thereof, the Company executed and delivered to
the Trustees a Thirty-fourth Supplemental Indenture, dated as of March 31, 1992 (which supplemental indenture is hereinafter sometimes called the “Thirty-fourth Supplemental Indenture”); and 
 WHEREAS, the Company-Kansas caused the Thirty-fourth Supplemental Indenture to be filed for record as a mortgage of real property in the office of the
Register of Deeds of Sedgwick County, Kansas (filed on March 31, 1992, Film 1236, page 987), and as a security agreement in the Office of Secretary of State of Kansas (filed on March 31, 1992 and indexed as No. 1,780,893),
but paid no mortgage registration tax in connection with the recordation of the Thirty-fourth Supplemental Indenture, no such tax having been payable in connection with such recordation; and 
 WHEREAS, the Company caused the Thirty-fifth Supplemental Indenture to be filed for record as a mortgage of real property in the office of the Register
of Deeds of Sedgwick County, Kansas (filed on December 16, 1992, Film 1301, page 0104), and as a security agreement in the Office of Secretary of State of Kansas (filed on December 16, 1992 and indexed as No. 1,861,886), but
paid no mortgage registration tax in connection with the recordation of the Thirty-fifth Supplemental Indenture, no such tax having been payable in connection with such recordation; and 
 WHEREAS, the Company-Kansas caused the Thirty-sixth Supplemental Indenture to be filed for record as a mortgage of real property in the office of the
Register of Deeds of Sedgwick County, Kansas (filed on August 10, 1993, Film 1364, page 0515), and as a security agreement in the Office of Secretary of State of Kansas (filed on August 11, 1993 and indexed as
No. 1,936,501), but paid no mortgage registration tax in connection with the recordation of the Thirty-sixth Supplemental Indenture, no such tax having been payable in connection with such recordation; and 
  

 -8- 

 WHEREAS, the Company-Kansas caused the Thirty-seventh Supplemental Indenture to be filed for record as a
mortgage of real property in the office of the Register of Deeds of Sedgwick County, Kansas (filed on January 18, 1994, Film 1411, page 0710), and as a security agreement in the Office of Secretary of State of Kansas (filed on
January 18, 1994 and indexed as No. 1,985,104), but paid no mortgage registration tax in connection with the recordation of the Thirty-seventh Supplemental Indenture, no such tax having been payable in connection with such recordation; and

 WHEREAS, the Company-Kansas caused the Thirty-eighth Supplemental Indenture to be filed for record as a mortgage of real property in the
office of the Register of Deeds of Sedgwick County, Kansas (filed on February 28, 1994, Film 1422, page 1046), and as a security agreement in the Office of Secretary of State of Kansas (filed on February 28, 1994 and indexed as
No. 1,997,743), but paid no mortgage registration tax in connection with the recordation of the Thirty-eighth Supplemental Indenture, no such tax having been payable in connection with such recordation; and 
 WHEREAS, the Company-Kansas caused the Thirty-ninth Supplemental Indenture to be filed for record as a mortgage of real property in the office of the
Register of Deeds of Sedgwick County, Kansas (filed on April 27, 1994, Film 1440, page 855), and as a security agreement in the Office of Secretary of State of Kansas (filed on April 27, 1994 and indexed as No. 1,377,915),
but paid no mortgage registration tax in connection with the recordation of the Thirty-ninth Supplemental Indenture, no such tax having been payable in connection with such recordation; and 
 WHEREAS, the Company-Kansas caused the Forty-first Supplemental Indenture to be filed for record as a mortgage of real property in the office of the
Register of Deeds of Sedgwick County, Kansas (filed on June 6, 2002, Film 2460, page 1), and as a security agreement in the office of Secretary of State of Kansas (filed on June 6, 2002, and indexed as No. 5264221), but paid
no mortgage registration tax in connection with the recordation of the Forty-first Supplemental Indenture, no such tax having been payable in connection with such recordation; and 
 WHEREAS, the Company-Kansas caused the Forty-second Supplemental Indenture to be filed for record as a mortgage of real property in the office of the
Register of Deeds of Sedgwick County, Kansas (filed on March 12, 2004, Film 2854, page 8731), and as a security agreement in the office of Secretary of State of Kansas (filed on March 12, 2004, and indexed as No. 5760673),
but paid no mortgage registration tax in connection with the recordation of the Forty-second Supplemental Indenture, no such tax having been payable in connection with such recordation; and 
 WHEREAS, the Company-Kansas caused the Forty-third Supplemental Indenture to be filed for record as a mortgage of real property in the office of the
Register of Deeds of Sedgwick County, Kansas (filed on June 10, 2004, Film and Page 28578510), and as a security agreement in the office of Secretary of State of Kansas (filed on June 10, 2004, and indexed as No. 5820311),
but paid no mortgage registration tax in connection with the recordation of the Forty-third Supplemental Indenture, no such tax having been payable in connection with such recordation; and 
  

 -9- 

 WHEREAS, the Company-Kansas caused the Forty-fourth Supplemental Indenture to be filed for record as a
mortgage of real property in the office of the Register of Deeds of Sedgwick County, Kansas (filed on May 6, 2005, Film and Page 28671438), and as a security agreement in the office of Secretary of State of Kansas (filed on
May 6, 2005, and indexed as No. 5981824), but paid no mortgage registration tax in connection with the recordation of the Forty-fourth Supplemental Indenture, no such tax having been payable in connection with such recordation; and

 WHEREAS, the Company-Kansas caused the Forty-fifth Supplemental Indenture to be filed for record as a mortgage of real property in the
office of the Register of Deeds of Sedgwick County, Kansas (filed on March 17, 2006, Film and Page 28764552), and as a security agreement in the office of Secretary of State of Kansas (filed on March 17, 2006, and indexed as
No. 6122576), but paid no mortgage registration tax in connection with the recordation of the Forty-fifth Supplemental Indenture, no such tax having been payable in connection with such recordation; and 
 WHEREAS, the Company-Kansas caused the Forty-sixth Supplemental Indenture to be filed for record as a mortgage of real property in the office of the
Register of Deeds of Sedgwick County, Kansas (filed on June 1, 2006, Film and Page 28785638, and as a security agreement in the office of Secretary of State of Kansas (filed on June 1, 2006, and indexed as No. 6168504), but
paid no mortgage registration tax in connection with the recordation of the Forty-sixth Supplemental Indenture, no such tax having been payable in connection with such recordation; and 
 WHEREAS, the Company-Kansas caused the Forty-seventh Supplemental Indenture to be filed for record as a mortgage of real property in the office of the
Register of Deeds of Sedgwick County, Kansas (filed on March 16, 2007, Film and Page 28865277), and as a security agreement in the office of Secretary of State of Kansas (filed on March 16, 2007, and indexed as No. 6326219),
but paid no mortgage registration tax in connection with the recordation of the Forty-seventh Supplemental Indenture, no such tax having been payable in connection with such recordation; and 
 WHEREAS, the Company-Kansas caused the Forty-eighth Supplemental Indenture to be filed for record as a mortgage of real property in the office of the
Register of Deeds of Sedgwick County, Kansas (filed on July 13, 2007, Film and Page 28899558), and as a security agreement in the office of Secretary of State of Kansas (filed on July 13, 2007, and indexed as No. 6385835),
but paid no mortgage registration tax in connection with the recordation of the Forty-eighth Supplemental Indenture, no such tax having been payable in connection with such recordation; and 
 WHEREAS, the Company-Kansas caused the Forty-ninth Supplemental Indenture to be filed for record as a mortgage of real property in the office of the
Register of Deeds of Sedgwick County, Kansas (filed on October 12, 2007, Film and Page 28923805), and as a security agreement in the office of Secretary of State of Kansas (filed on October 12, 2007, and indexed as
No. 6417307), but paid no mortgage registration tax in connection with the recordation of the Forty-ninth Supplemental Indenture, no such tax having been payable in connection with such recordation; and 
  

 -10- 

 WHEREAS, the Company-West Virginia, the Company-Kansas or the Company has from time to time caused to be
filed in the respective offices of the above-mentioned Registers of Deeds and Secretary of State affidavits executed by the Trustees under the Mortgage, preserving and continuing the lien thereof either as a chattel mortgage in accordance with the
provisions of K.S.A. 58-303 (Section 58-303 of the General Statutes of Kansas 1935) or as a security agreement under the provisions of K.S.A. 84-9-401 et seq.; and 
 WHEREAS, in addition to the aforesaid filings for record in the respective offices of the above-mentioned Registers of Deeds, the Company-West Virginia,
the Company-Kansas or the Company has filed copies of the Mortgage and the First through Forty-ninth Supplemental Indentures, certified as true by it, with the Secretary of State of Kansas; and 
 WHEREAS, the Company-West Virginia, the Company-Kansas or the Company has heretofore issued, in accordance with the provisions of the Mortgage, as
heretofore supplemented, the following series of First Mortgage Bonds: 
  

						
	 Series
	  	Principal
Amount
Issued	  	Principal
Amount
Outstanding
	 3  3/8% Series
due 1970
	  	$	16,000,000	  	None
	 3  1/8% Series
due 1978
	  	 	5,000,000	  	None
	 2  3/4% Series
due 1979
	  	 	3,000,000	  	None
	 3  3/8% Series
due 1982
	  	 	12,000,000	  	None
	 3  5/8% Series
due 1983
	  	 	10,000,000	  	None
	 3  3/8% Series
due 1985
	  	 	10,000,000	  	None
	 3  3/8% Series
due 1986
	  	 	7,000,000	  	None
	 4  5/8% Series
due 1991
	  	 	7,000,000	  	None
	 5  5/8% Series
due 1996
	  	 	16,000,000	  	None
	 8  1/2% Series
due 2000
	  	 	35,000,000	  	None
	 8  1/8% Series
due 2001
	  	 	35,000,000	  	None
	 7 3/8 % Series
due 2002
	  	 	25,000,000	  	None
	 9 5/8 % Series
due 2005
	  	 	40,000,000	  	None
	 6% Series due 1985
	  	 	7,000,000	  	None
	 7  3/4% Series
due 2005
	  	 	12,500,000	  	None
	 8  3/8% Series
due 2006
	  	 	25,000,000	  	None
	 8  1/2% Series
due 2007
	  	 	25,000,000	  	None
	 6% Series due 2007
	  	 	10,000,000	  	None
	 5  7/8% Series
due 2007
	  	 	21,940,000	  	None
	 8  7/8% Series
due 2008
	  	 	30,000,000	  	None
	 6.80% Series due 2004
	  	 	14,500,000	  	None
	 16  1/4% Series
due 1987
	  	 	30,000,000	  	None
	 6  1/2% Series
due 1983
	  	 	15,000,000	  	None
	 7  1/4% Series
due 1983
	  	 	25,500,000	  	None
	 14  7/8 % Series
due 1987—1991
	  	 	30,000,000	  	None
	 16% Series due 1996
	  	 	25,000,000	  	None
	 15  3/4% Series
due 1989
	  	 	40,000,000	  	None
	 13  1/2% Series
due 1989
	  	 	100,000,000	  	None

  

 -11- 

					
	 Series
	  	Principal
Amount
Issued	  	Principal
Amount
Outstanding
	 14.05% Series due 1991
	  	30,000,000	  	None
	 14  1/8% Series
due 1991
	  	20,000,000	  	None
	 10  7/8% Series
due 1987
	  	30,000,000	  	None
	 9  3/4% Series
due 2016
	  	50,000,000	  	None
	 7.00% Series A due 2031
	  	18,900,000	  	None
	 7.00% Series B due 2031
	  	308,600,000	  	None
	 7.60% Series due 2003
	  	135,000,000	  	None
	 6  1/2% Series
due 2005
	  	65,000,000	  	None
	 6.20% Series due 2006
	  	100,000,000	  	None
	 5.10% Series due 2023
	  	13,462,500	  	13,462,500
	 7  1/2% Series A
due 2032
	  	14,500,000	  	14,500,000
	 7  1/2% Series B
due 2027
	  	21,940,000	  	21,940,000
	 7  1/2% Series C
due 2032
	  	10,000,000	  	10,000,000
	 9  1/2% Series
due 2003
	  	702,200,000	  	None
	 8% Series due 2005
	  	735,000,000	  	None
	 3  1/2% Series
due 2007
	  	300,000,000	  	None
	 5.30% Series due 2031
	  	18,900,000	  	18,900,000
	 5.30% Series A due 2031
	  	108,600,000	  	108,600,000
	 2.65% Series B due 2031
	  	100,000,000	  	None
	 Variable Rate Series C due 2031
	  	100,000,000	  	100,000,000
	 4.60% Series due 2010
	  	350,000,000	  	None
	 5.57% Series due 2011
	  	500,000,000	  	None
	 Burlington Series 2004B-1 due 2031
	  	50,000,000	  	50,000,000
	 Burlington Series 2004B-2 due 2031
	  	50,000,000	  	50,000,000
	 5.57% Series due 2012
	  	500,000,000	  	None
	 6.53% Series due 2037
	  	175,000,000	  	175,000,000

  
 hereinafter sometimes called Bonds of the First through Fifty-fourth Series; and 
 WHEREAS, Section 8 of the Mortgage provides
that the form of each series of bonds (other than the First Series) issued thereunder and of the coupons to be attached to the coupon bonds of such series shall be established by Resolution of the Board of Directors of the Company and that the form
of such series, as established by said Board of Directors, shall specify the descriptive title of the bonds and various other terms thereof, and may also contain such provisions not inconsistent with the provisions of the Mortgage as the Board of
Directors may, in its discretion, cause to be inserted therein expressing or referring to the terms and conditions upon which such bonds are to be issued and/or secured under the Mortgage; and 
 WHEREAS, Section 120 of the Mortgage provides, among other things, that any power, privilege or right expressly or impliedly reserved to or in any
way conferred upon the Company by any provision of the Mortgage whether such power, privilege or right is in any way restricted 

  

 -12- 

 
or is unrestricted, may be in whole or in part waived or surrendered or subjected to any restriction if at the time unrestricted or to additional restriction
if already restricted, and the Company may enter into any further covenants, limitations or restrictions for the benefit of any one or more series of bonds issued thereunder, or the Company may cure any ambiguity contained therein or in any
supplemental indenture, or may establish the terms and provisions of any series of bonds other than said First Series, by an instrument in writing executed and acknowledged by the Company in such manner as would be necessary to entitle a conveyance
of real estate to record in all of the states in which any property at the time subject to the lien of the Mortgage shall be situated; and 
 WHEREAS, the Company now desires to create a new series of bonds; and 
 WHEREAS, the execution and delivery by the Company of this
Fiftieth Supplemental Indenture, and the terms of the Bonds of the Fifty-fifth Series, hereinafter referred to, have been duly authorized by the Board of Directors of the Company by appropriate Resolutions of said Board of Directors; 
 NOW, THEREFORE, THIS INDENTURE WITNESSETH: 
 That Kansas Gas and Electric Company, in consideration of the premises and of One Dollar ($1) to it duly paid by the Trustees at or before the ensealing and delivery of these presents, the receipt whereof is hereby acknowledged, and in
further evidence of assurance of the estate, title and rights of the Trustees and in order further to secure the payment both of the principal of and interest and premium, if any, on the bonds from time to time issued under the Mortgage, according
to their tenor and effect and the performance of all the provisions of the Mortgage (including any instruments supplemental thereto and any modification made as in the Mortgage provided) and of said bonds, hereby grants, bargains, sells, releases,
conveys, assigns, transfers, mortgages, pledges, sets over and confirms (subject, however, to Excepted Encumbrances as defined in Section 6 of the Mortgage) unto The Bank of New York Trust Company, N.A. and to Judith L. Bartolini, as Trustees
under the Mortgage, and to their successor or successors in said trust, and to said Trustees and their successors and assigns forever, all property, real, personal and mixed, acquired by the Company after the date of the execution and delivery of
the Mortgage, in addition to property covered by the First through the Forty-ninth Supplemental Indentures (except any herein or in the Mortgage, as heretofore supplemented, expressly excepted), now owned or, subject to the provisions of
Section 87 of the Mortgage, hereafter acquired by the Company and wheresoever situated, including (without in anywise limiting or impairing by the enumeration of the same the scope and intent of the foregoing or of any general description
contained in this Fiftieth Supplemental Indenture) all lands, flowage rights, water rights, flumes, raceways, dams, rights of way and roads; all steam and power houses, gas plants, street lighting systems, standards and other equipment incidental
thereto, telephone, radio and television systems, air-conditioning systems and equipment incidental thereto, water works, steam heat and hot water plants, lines, service and supply systems, bridges, culverts, tracks, rolling stock, ice or
refrigeration plants and equipment, street and interurban railway systems, offices, buildings and other structures and the equipment thereof; all machinery, engines, boilers, dynamos, electric and gas machines, regulators, meters, transformers,
generators, motors, electrical, gas and mechanical appliances, conduits, cables, water, steam heat, gas or other pipes, gas mains and pipes, service pipes, fittings, valves and connections, pole 

  

 -13- 

 
and transmission lines, wires, cables, tools, implements, apparatus, furniture, chattels and chooses in action; all municipal and other franchises; all lines
for the transmission and distribution of electric current, gas, steam heat or water for any purpose, including poles, wires, cables, pipes, conduits, ducts and all apparatus for use in connection therewith; all real estate, lands, easements,
servitudes, licenses, permits, franchises, privileges, rights of way and other rights in or relating to real estate or the occupancy of the same and (except as herein or in the Mortgage, as heretofore supplemented, expressly excepted), all the
right, title and interest of the Company in and to all other property of any kind or nature appertaining to and/or used and/or occupied and/or enjoyed in connection with any property hereinbefore or in the Mortgage, as heretofore supplemented,
described. 
 TOGETHER WITH all and singular the tenements, hereditarnents and appurtenances belonging or in anywise appertaining to the
aforesaid property or any part thereof, with the reversion and reversions, remainder and remainders and (subject to the provisions of Section 57 of the Mortgage) the tolls, rents, revenues, issues, earnings, income, product and profits thereof,
and all the estate, right, title and interest and claim whatsoever, at law as well as 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. 
 IT IS HEREBY AGREED by the Company that, subject to the provisions of Section 87 of the Mortgage, all the property, rights and franchises acquired
by the Company after the date hereof (except any herein or in the Mortgage, as heretofore supplemented, expressly excepted), shall be as fully embraced within the lien hereof and the lien of the Mortgage, as if such property, rights and franchises
were now owned by the Company and were specifically described herein and conveyed hereby. 
 PROVIDED that the following are not and are not
intended to be now or hereafter granted, bargained, sold, released, conveyed, assigned, transferred, mortgaged, pledged, set over or confirmed hereunder and are hereby expressly excepted from the lien and operation of this Fiftieth Supplemental
Indenture and from the lien and operation of the Mortgage, viz.: (1) cash, shares of stock and obligations (including bonds, notes and other securities) not hereafter specifically pledged, paid, deposited or delivered under the Mortgage or
covenanted so to be; (2) merchandise, equipment, materials or supplies held for the purpose of sale in the usual course of business and fuel, oil and similar materials and supplies consumable in the operation of any properties of the Company;
vehicles and automobiles; (3) bills, notes and accounts receivable, and all contracts, leases and operating agreements not specifically pledged under the Mortgage or covenanted so to be; and (4) electric energy, and other materials or
products generated, manufactured, produced or purchased by the Company for sale, distribution or use in the ordinary course of its business; provided, however, that the property and rights expressly excepted from the lien and operation of the
Mortgage and this Fiftieth Supplemental Indenture in the above subdivisions (2) and (3) shall (to the extent permitted by law) cease to be so excepted in the event that either or both of the Trustees or a receiver or trustee shall enter
upon and take possession of the Mortgaged and Pledged Property in the manner provided in Article XII of the Mortgage by reason of the occurrence of a Default as defined in said Article XII. 
 THERE is expressly excepted from the lien of the Mortgage and from the lien hereof all property of the Company located in the State of Missouri now owned
or hereafter acquired 

  

 -14- 

 
unless such property in the State of Missouri shall be subjected to the lien of the Mortgage by an indenture or indentures supplemental thereto, pursuant to
authorization by the Board of Directors of the Company. 
 TO HAVE AND TO HOLD all such properties, real, personal and mixed, granted,
bargained, sold, released, conveyed, assigned, transferred, mortgaged, pledged, set over or confirmed by the Company as aforesaid, or intended so to be, unto the Trustees, their successors and assigns forever. 
 IN TRUST NEVERTHELESS, for the same purposes and upon the same terms, trusts and conditions and subject to and with the same provisos and covenants as
are set forth in the Mortgage, as supplemented, this Fiftieth Supplemental Indenture being supplemental thereto. 
 AND IT IS HEREBY
COVENANTED by the Company that all the terms, conditions, provisos, covenants and provisions contained in the Mortgage, as supplemented, shall affect and apply to the property hereinbefore described and conveyed and to the estate, rights,
obligations and duties of the Company and Trustees and the beneficiaries of the trust with respect to said property, and to the Trustees and their successors as Trustees of said property in the same manner and with the same effect as if the said
property had been owned by the Company at the time of the execution of the Mortgage, and had been specifically and at length described in and conveyed to the Trustees by the Mortgage as a part of the property therein stated to be conveyed.

 The Company further covenants and agrees to and with the Trustees and their successors in said trust under the Mortgage, as follows:

 ARTICLE I 
 2012 SERIES OF
BONDS 
 SECTION 1. There shall be a series of bonds designated “5.57% Series due 2012” (herein sometimes referred to as the
“Bonds of the 2012 Series”), each of which shall also bear the descriptive title, First Mortgage Bond, and the form thereof, which is established by Resolution of the Board of Directors of the Company, shall contain suitable provisions
with respect to the matters hereinafter in this Article I specified. Bonds of the 2012 Series shall be limited to $750,000,000 in aggregate principal amount, except as provided in Section 16 of the Mortgage, shall mature on March 17, 2012,
and shall be issued as fully registered bonds in denominations of Five Thousand Dollars and in any multiple or multiples of Five Thousand Dollars. Bonds of the 2012 Series shall bear interest at the rate of 5.57% per annum payable (subject to
the second paragraph of Section 4) on the interest payment dates for the Loans (as defined below). Every Bond of the 2012 Series shall bear interest from each interest payment date for the Loans next preceding the date thereof, unless no
interest has been paid on the Bond in which case from February 22, 2008. The principal of and interest on Bonds of the 2012 Series shall be payable at the office or agency of the Company in the Borough of Manhattan, The City of New York, in
such coin or currency of the United States of America as at the time of payment is legal tender for public and private debts. 
  

 -15- 

 SECTION 2. Bonds of the Fifty-fourth Series shall be dated as in Section 10 of the Mortgage
provided. 
 SECTION 3. Bonds of the 2012 Series are redeemable prior to maturity only upon demand therefor by the Collateral Agent.
To effect the redemption of Bonds of the 2012 Series, the Collateral Agent shall deliver to the Trustee (and deliver a copy thereof to the Company) a written demand (hereinafter referred to as a “Redemption Demand”) for the redemption of
Bonds of the 2012 Series, signed by an authorized officer and dated the date of its delivery to the Corporate Trustee, stating (i) that an Event of Default (as defined in the Collateral Agreement and as defined in the Credit Agreement referred
to below) has occurred and is continuing, (ii) that there are not sufficient available funds held by the Collateral Agent pursuant to the Collateral Agreement to make all payments required as a result of such Event of Default, (iii) the
amount of funds, in addition to available funds held by the Collateral Agent pursuant to the Collateral Agreement, required to make such payments, and (iv) the principal amount of Bonds of the 2012 Series the Collateral Agent demands to have
redeemed and the redemption date therefor which date should be at least thirty-one (31) days after the date of such Redemption Demand (provided, such principal amount shall not exceed the amount of funds specified pursuant to the
foregoing clause (iii)). The Trustee may conclusively presume the statements contained in the Redemption Demand to be correct. Redemption of Bonds of the 2012 Series shall in all cases be at a price equal to the principal amount of the Bonds to be
redeemed together with accrued interest to the redemption date, and such amount shall become and be due and payable on the redemption date. 
 The Company hereby covenants that if a Redemption Demand shall be delivered to the Corporate Trustee, the Company will deposit, on or before the redemption date, with the Corporate Trustee, in accordance with Article X of the Mortgage, an
amount in cash sufficient to redeem the Bonds of the 2012 Series so called for redemption. 
 SECTION 4. All Bonds of the 2012 Series shall
be issued and pledged by the Company to the Collateral Agent pursuant to a Collateral and Guarantee Agreement dated as of February 22, 2008 among the Company, Westar Energy, Inc. (“WEI”) and JPMorgan Chase Bank, N.A. (in such
capacity, the “Collateral Agent”) (the “Collateral Agreement”) to secure the payment of the principal of, and up to 5.57% per annum of the interest on any of the loans issued pursuant to the $750,000,000 Third Amended and
Restated Credit Agreement, dated as of February 22, 2008, among WEI, JPMorgan Chase Bank, N.A., as administrative agent, the other agents party thereto, and the lenders party thereto (the “Credit Agreement” and the loans thereunder
are referred to collectively as the “Loans”). 
 The obligation of the Company to make payments with respect to the principal of
and interest on Bonds of the 2012 Series (including without limitation upon maturity thereof) shall be fully or partially, as the case may be, satisfied and discharged to the extent that, at the time that any such payment shall be due, the then due
principal of and interest on the Loans shall have been fully or partially paid, or there shall be held by the Collateral Agent pursuant to the Collateral Agreement sufficient available funds to fully or partially pay the then due principal of and
interest on the Loans. Notwithstanding any other provisions of this Supplemental Indenture or the Mortgage, interest on the Bonds of the 2012 Series shall be deemed fully or partially satisfied and discharged as provided herein even if the interest
rate on Bonds of the 2012 Series 

  

 -16- 

 
may be higher or lower than the interest rate on any of the Loans at the time interest on any such Loans is paid. The Corporate Trustee may conclusively
presume that the obligation of the Company to make payments with respect to the principal of and interest on Bonds of the 2012 Series shall have been fully satisfied and discharged unless and until the Corporate Trustee shall have received a written
notice from the Collateral Agent, signed by an authorized officer, stating (i) that timely payment of the principal of or interest on the Loans required to be made by the Company has not been made, (ii) that there are not sufficient
available funds held by the Collateral Agent pursuant to the Collateral Agreement to make such payment and (iii) the amount of funds, in addition to available funds held by the Collateral Agent pursuant to the Collateral Agreement, required to
make such payment. 
 SECTION 5. At the option of the registered owner, any Bonds of the 2012 Series, upon surrender thereof, for
cancellation, at the office or agency of the Company in the Borough of Manhattan, City of New York, shall be exchangeable for a like aggregate principal amount of bonds of the same series of other authorized denominations. The Bonds of the 2012
Series may bear such legends as may be necessary to comply with any law or with any rules or regulations made pursuant thereto or with the rules or regulations of any stock exchange or to conform to usage with respect thereto. 
 SECTION 6. Bonds of the 2012 Series shall be transferable upon the surrender thereof, for cancellation together with a written instrument of transfer in
form approved by the registrar duly executed by the registered owner or by his duly authorized attorney, at the office or agency of the Company in the Borough of Manhattan, City of New York. 
 SECTION 7. The Company may deliver to the Trustee in substitution for any Bonds of the 2012 Series, 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 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 Bonds of the 2012 Series. 
 ARTICLE II 

AMENDMENTS TO THE MORTGAGE AND RESERVATION OF RIGHTS 
 SECTION 1. The Company reserves the right, subject to appropriate action, but without any consent or other action by holders of Bonds of the 2012 Series, or of any subsequent series of bonds, to clarify the ability of
the Company to issue variable rate bonds under the Mortgage, notwithstanding any provision of the Mortgage to the contrary. The Company may make such other amendments to the Mortgage as may be necessary or desirable in the opinion of the Company to
effect the foregoing. 
 SECTION 2. The Company reserves the right, subject to appropriate action, but without any consent or other action by
holders of Bonds of the 2012 Series, or of any subsequent series of bonds, to amend the Mortgage to eliminate the requirements for the provision by the Company 

  

 -17- 

 
of a Net Earning Certificate by deleting Section 27, Section 28(6) and Section 30(3) and deleting the following language from the end of
Section 26: “and, in case the bonds are to be authenticated and delivered under the provisions of the next preceding paragraph of this Section by reason of an increase in the aggregate principal amount of bonds authenticated and delivered
under this Indenture having increased the aggregate principal amount of bonds which may be authenticated and delivered within the limitations prescribed by this Section, a Net Earning Certificate showing the Net Earnings of the Company to be as
required by Section 27 hereof.” The Company may make such other amendments to the Mortgage as may be necessary or desirable in the opinion of the Company to effect the foregoing. 
 SECTION 3. The Company reserves the right, subject to appropriate action, but without any consent or other action by holders of Bonds of the 2012 Series,
or of any subsequent series of bonds, to amend the Mortgage as may be necessary in order to permit the Company to deliver to the Trustee in substitution for any bonds issued under the Mortgage, 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 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. 
 SECTION 4. The Company reserves
the right, subject to appropriate action, but without any consent or other action by holders of Bonds of the 2012 Series, or of any subsequent series of bonds, to amend the Mortgage 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 5. The Company reserves the
right, subject to appropriate action, but without any consent or other action by holders of Bonds of the 2012 Series, or of any subsequent series of bonds, to amend the Mortgage 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 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) Permitting the Company to remove the trustee in certain circumstances; 
 (VII) Providing for direction to the trustee under the Mortgage to vote pledged prior lien bonds for specified amendments to the prior lien mortgage;

  

 -18- 

 (VIII) Providing 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) Amending 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) Amending the definition of “Bondable Property” to allow all mortgaged property to be bondable; 
 (XI) Updating the definition of “Permitted Liens”; 
 (XII) Eliminate the requirement to have an individual trustee under the Mortgage; and 
 (XIII) Replace the phase “two and one-half (2 1/2)” in Section 27 of the Mortgage with “two (2).” 
 ARTICLE III 
 MISCELLANEOUS PROVISIONS 
 SECTION 1. All Bonds of the 2012 Series acquired by the Company shall forthwith be delivered to the Corporate Trustee for cancellation. 
 SECTION 2. Subject to the amendments provided for in this Fiftieth Supplemental Indenture, the terms defined in the Mortgage, as heretofore supplemented,
shall, for all purposes of this Fiftieth Supplemental Indenture, have the meanings specified in the Mortgage, as heretofore supplemented. 
 SECTION 3. The Trustees hereby accept the trusts herein declared, provided, created or supplemented and agree to perform the same upon the terms and conditions set forth herein and in the Mortgage, as heretofore amended and supplemented,
and upon the following terms and conditions: 
 The Trustees shall not be responsible in any manner whatsoever for or in respect of the
validity or sufficiency of this Fiftieth 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 XVI of
the Mortgage, as heretofore amended and supplemented, shall apply to and form part of this Fiftieth 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 Fiftieth Supplemental Indenture. 
 SECTION 4. Subject to the
provisions of Article XV and Article XVI of the Mortgage, as heretofore amended and supplemented, whenever in this Fiftieth Supplemental Indenture any of the parties hereto is named or referred to, this shall be deemed to include the
successors or assigns of such party, and all the covenants and agreements in this Fiftieth Supplemental 

  

 -19- 

 
Indenture contained by or on behalf of the Company or by or on behalf of the Trustees shall bind and inure to the benefit of the respective successors and
assigns of such parties whether so expressed or not. 
 SECTION 5. Nothing in this Fiftieth 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 Mortgage, any right, remedy or claim under or by reason of
this Fiftieth Supplemental Indenture or any covenant, condition, stipulation, promise or agreement hereof, and all the covenants, conditions, stipulations, promises and agreements in this Fiftieth Supplemental Indenture contained by or 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 Mortgage. 
 SECTION 6. This Fiftieth Supplemental Indenture shall be executed in several counterparts, each of which shall be an original and all of which shall constitute but one and the same instrument. 
 [Remainder of page intentionally left blank.] 
  

 -20- 

 IN WITNESS WHEREOF, Kansas Gas and Electric Company has caused its corporate name to be hereunto affixed,
and this instrument to be signed and sealed by Mark A. Ruelle, Vice President and Treasurer, and its corporate seal to be attested by Larry D. Irick, its Secretary for and on its behalf, The Bank of New York Trust Company, N.A. has caused its
corporate name to be hereunto affixed, and this instrument to be signed and sealed by one of its duly authorized officers and its corporate seal to be attested by one of its Assistant Secretaries for and on its behalf, and Judith L. Bartolini has
hereunto set her hand and all as of the day and year first above written. 
  

					
		  	KANSAS GAS AND ELECTRIC COMPANY
			
		  	By:	 	 /s/ Mark A. Ruelle

		  		 	Mark A. Ruelle
		  		 	Vice President and Treasurer
			
	Attest:	  		 	
			
	 /s/ Larry D. Irick
	  		 	(corporate seal)
	Larry D. Irick	  		 	
	Secretary	  		 	
			
	 Executed, sealed and delivered by
 Kansas Gas and
Electric Company,
 in the presence of:
	  		 	
			
	 /s/ Peter L. Sumners
	  		 	
			
	 /s/ Cynthia S. Couch
	  		 	

  

 -21- 

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

			
		  	By:	 	 /s/ Dan Donovan

			
	Attest:	  		 	(corporate seal)
			
	 /s/ Linda Garcia
	  		 	 /s/ Judith L. Bartolini

		  		 	Judith L. Bartolini,
		  		 	as Individual Trustee
			
	 Executed, sealed and delivered by
 THE BANK OF NEW YORK
TRUST COMPANY, N.A.
 and JUDITH L. BARTOLINI, in the presence of:
	  		 	
			
	 /s/ R. Tarnas
	  		 	
			
	 /s/ Ross N. Finke
	  		 	

  

 -22- 

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

 BE IT REMEMBERED, that on this 22nd day of February, 2008, before me, the undersigned, a Notary
Public within and for the County and State aforesaid, came Mark A. Ruelle, the Vice President and Treasurer of Kansas Gas and Electric Company, a corporation duly organized, incorporated and existing under the laws of the State of Kansas, who is
personally known to me to be such officer, and who is personally known to me to be the same person who executed, as such officer, the within instrument of writing, and such person duly acknowledged the execution of the same to be the act and deed of
said corporation and that said instrument of writing was so executed by order of the Board of Directors of said corporation. 
 On this 22nd day of February, 2008, before me appeared Larry D. Irick, to me personally known, who being by me duly sworn did say that he is the Secretary of Kansas Gas and Electric Company, and that the seal affixed to the
foregoing instrument is the corporate seal of said corporation, and that said instrument was signed and sealed in behalf of said corporation by authority of its Board of Directors, and said Larry D. Irick acknowledged said instrument to be the free
act and deed of said corporation. 
 On the 22nd day of February in the year 2008, before me personally appeared Mark A. Ruelle to me known, who, being by me duly sworn, did depose and say that he is the Vice President and
Treasurer of Kansas Gas and Electric Company; that the seal affixed to the foregoing instrument is the corporate seal of said corporation, and that said instrument was signed and sealed in behalf of said corporation by authority of its Board of
Directors, and said Mark A. Ruelle acknowledged said instrument to be the free act and of said corporation. 
 IN WITNESS WHEREOF, I have
hereunto subscribed my name and affixed my official seal on the day and year above written. 
  

	
	 /s/ Patti Beasley

	 NOTARY PUBLIC — STATE OF KANSAS
 MY APPOINTMENT
EXPIRES 11-18-08

  

 -23- 

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

 BE IT REMEMBERED, that on this
20th day of February, 2008, before me, the undersigned, a Notary Public within and for the County and State aforesaid, came Dan Donovan, a Vice
President of The Bank of New York Trust Company, N.A., as trustee, a national banking association, who is personally known to me to be such officer, and who is personally known to me to be the same person who executed, as such officer, the within
instrument of writing, and such person duly acknowledged the execution of the same to be the act and deed of said corporation and that said instrument of writing was so executed by authority of the Board of Directors of said corporation. 

On this 20th day of February, 2008, before me appeared Linda Garcia, to me personally known, who being by me duly sworn did say that she is an Vice President of The Bank of New York Trust Company, N.A., and that the seal affixed
to the foregoing instrument is the corporate seal of said corporation, and that said instrument was signed and sealed in behalf of said corporation by authority of its Board of Directors, and said Vice President acknowledged said instrument to be
the free act and deed of said corporation. 
 On the 20th day of February in the year 2008, before me personally came Dan Donovan, to me known, who, being by me duly sworn, did depose and say that he resides at
Arlington Heights, Illinois, that he is a Vice President of The Bank of New York Trust Company, N.A., one of the corporations described in and which executed the above instrument; that he knows the seal of said corporation; that the seal affixed to
said instrument is such corporate seal; that it was so affixed by authority of the Board of Directors of said corporation, and that he signed his name thereto by like authority. 
 IN WITNESS WHEREOF, I have hereunto subscribed my name and affixed my official seal on the day and year above written. 
  

	
	 /s/ T. Mosterd

	 NOTARY PUBLIC, STATE OF ILLINOIS
 NO.
 QUALIFIED IN COOK COUNTY
 COMMISSION EXPIRES 11/22/09

  

 -24- 

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

 On this 20th day of February in the year 2008, before me, the undersigned, a Notary Public in and for the State of Illinois, in the County of Cook, personally
appeared and came Judith L. Bartolini, as Individual Trustee, to me known and known to me to be the person described in and who executed the within and foregoing instrument and whose name is subscribed thereto and acknowledged to me that she
executed the same. 
 IN WITNESS WHEREOF, I have hereunto subscribed my name and affixed my official seal the day and year in this
certificate first above written. 
  

	
	 /s/ T. Mosterd

	 NOTARY PUBLIC, STATE OF ILLINOIS
 NO.
 QUALIFIED IN COOK COUNTY
 COMMISSION EXPIRES 11/22/09

  

 -25- 

 AFFIDAVIT 
  

					
	 STATE OF KANSAS
	  	)	  	
		  	:	  	SS.:
	 COUNTY OF SEDGWICK
	  	)	  	

 I, Larry D. Irick, being first duly sworn on oath, depose and say: 
 1. I am the Secretary of Kansas Gas and Electric Company, a corporation duly organized and existing under the laws of the State of Kansas (the
“Company”). I am duly authorized to make this affidavit on behalf of the Company. 
 2. The Company has heretofore executed
and delivered to The Bank of New York Trust Company, N.A. (as successor to BNY Midwest Trust Company) (the “Corporate Trustee”) and Judith L. Bartolini (the “Individual Trustee,” together with the Corporate Trustee,
the “Trustees”), a Mortgage and Deed of Trust, dated as of April 1, 1940, (hereinafter called the “Indenture”), to secure the Company’s First Mortgage Bonds. 
 3. The Company has heretofore executed and delivered to the Trustees supplemental indentures numbered “First” through “Forty-ninth,”
inclusive, (hereinafter called the “Supplemental Indentures”), creating other series of the Company’s First Mortgage Bonds. 
 4. The Indenture and all Supplemental Indentures confirmed unto the Trustees the real property situated in the State of Kansas which is subject to the lien of the Indenture. 
 5. The Indenture and all Supplemental Indentures were duly received and filed for record in accordance with the laws of the State of Kansas, and the
mortgage registration fee thereon provided for was, and has been, paid in full by the Company. 
 6. Under the Fortieth Supplemental
Indenture, the Company duly paid the mortgage registration fee in the amount of $1,780,538.50, based upon $684,822,500 of the Company’s indebtedness. The Fortieth Supplemental Indenture is found in the Sedgwick County Register of Deeds office
at Film 2062, page 53. 
 7. The Company has executed and delivered to the Trustees a 2012 Series of bonds to be issued under and
secured by the Indenture, the Supplemental Indentures and a new Supplemental Indenture dated as of February 22, 2008, (hereinafter called the “Fiftieth Supplemental Indenture”). 
 8. The purpose of the Fiftieth Supplemental Indenture is to reflect the issuance and of $750,000,000 principal amount of First Mortgage Bonds.

 9. $750,000,000 of the principal amount of the First Mortgage Bonds issued pursuant to the Fiftieth Supplemental Indenture tendered for
filing constitutes the same principal indebtedness covered or included in the Fortieth Supplemental Indenture with The Bank of New York Trust Company, N.A. and Judith L. Bartolini, Trustees, the same lender. 

 10. Under the Fiftieth Supplemental Indenture the registration fee with respect to all of the
indebtedness of $750,000,000 has been previously paid by the Company in connection with the Fortieth Supplemental Indenture and by virtue thereof is considered by the Company to be the same indebtedness, and thus exempt from the payment of further
registration fees pursuant to the provisions of K.S.A. 79-3102(d)(3). 
 FURTHER AFFIANT SAITH NAUGHT. 
  

	
	 /s/ Larry D. Irick

	Larry D. Irick, Secretary
	Kansas Gas and Electric Company

 Subscribed and sworn to before me
this 22nd day of February 2008. 
  

	
	 /s/ Patti Beasley

	Notary Public

 (notary seal)

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