Document:

Bond Purchase Agreement

 Exhibit 4.1 
  
  
  
 KANSAS GAS AND ELECTRIC COMPANY 
  
  
 BOND PURCHASE AGREEMENT 
  
  
 Dated as of May 15, 2008

 $50,000,000 First Mortgage Bonds 
 6.15% Series A Due May 15, 2023 
 $100,000,000 First Mortgage Bonds 
 6.64% Series B Due May 15, 2038 
  
  
  

 TABLE OF CONTENTS 
 (Not a part of the Agreement) 
  

					
	 SECTION
	 	 	  	PAGE
	 SECTION 1.
	 	Authorization of Bonds	  	1
			
	 Section 1.1.
	 	 Authorization of the Bonds
	  	1
	 Section 1.2.
	 	 Description of the Bonds
	  	1
			
	 SECTION 2.
	 	Sale and Purchase of Bonds; Security	  	2
			
	 Section 2.1.
	 	 Sale and Purchase of the Bonds
	  	2
	 Section 2.2.
	 	 Security for the Bonds
	  	2
			
	 SECTION 3.
	 	Closing	  	2
			
	 SECTION 4.
	 	Conditions to Closing	  	3
	 Section 4.1.
	 	 Representations and Warranties
	  	3
	 Section 4.2.
	 	 Performance; No Default
	  	3
	 Section 4.3.
	 	 Compliance Certificates
	  	3
	 Section 4.4.
	 	 Opinions of Counsel
	  	3
	 Section 4.5.
	 	 Purchase Permitted By Applicable Law, Etc
	  	3
	 Section 4.6.
	 	 Sale of Other Bonds
	  	4
	 Section 4.7.
	 	 Payment of Special Counsel Fees
	  	4
	 Section 4.8.
	 	 Private Placement Number
	  	4
	 Section 4.9.
	 	 Changes in Corporate Structure
	  	4
	 Section 4.10.
	 	 Supplemental Indenture
	  	4
	 Section 4.11.
	 	 Execution, Authentication and Delivery of Bonds
	  	4
	 Section 4.12.
	 	 Indenture Recording and Filing
	  	4
	 Section 4.13.
	 	 Perfection of Liens on Mortgaged and Pledged Property
	  	5
	 Section 4.14.
	 	 Approvals, Etc
	  	5
	 Section 4.15.
	 	 Funding Instructions
	  	5
	 Section 4.16.
	 	 No Event of Default
	  	5
	 Section 4.17.
	 	 Ratings
	  	5
	 Section 4.18.
	 	 Proceedings and Documents
	  	5
			
	 SECTION 5.
	 	Representations and Warranties of the Company	  	5
			
	 Section 5.1.
	 	 Organization; Power and Authority
	  	6
	 Section 5.2.
	 	 Authorization, Etc
	  	6
	 Section 5.3.
	 	 Disclosure
	  	6
	 Section 5.4.
	 	 Subsidiaries
	  	7
	 Section 5.5.
	 	 Financial Statements
	  	7
	 Section 5.6.
	 	 Compliance with Laws, Other Instruments, Etc
	  	7
	 Section 5.7.
	 	 Governmental Authorizations, Etc
	  	7
	 Section 5.8.
	 	 Litigation; Observance of Agreements, Statutes and Orders
	  	7
	 Section 5.9.
	 	 Taxes
	  	8
	 Section 5.10.
	 	 Title to Property; Mortgaged and Pledged Property
	  	8
	 Section 5.11.
	 	 Licenses, Permits, Etc
	  	8
	 Section 5.12.
	 	 ERISA
	  	9

  

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 TABLE OF CONTENTS 
 (continued) 
  

					
	 Section
	 	 	  	Page
	 Section 5.13.
	 	 Private Offering by the Company
	  	9
	 Section 5.14.
	 	 Use of Proceeds; Margin Regulations
	  	10
	 Section 5.15.
	 	 Existing Indebtedness; Future Liens
	  	10
	 Section 5.16.
	 	 Foreign Assets Control Regulations, Etc
	  	10
	 Section 5.17.
	 	 Status under Certain Statutes
	  	11
	 Section 5.18.
	 	 Environmental Matters
	  	11
	 Section 5.19.
	 	 Labor Disputes
	  	11
	 Section 5.20.
	 	 Perfection of Liens
	  	11
			
	 SECTION 6.
	 	Representations and Agreements of the Purchasers	  	11
			
	 Section 6.1.
	 	 Purchase for Investment
	  	11
	 Section 6.2.
	 	 Additional Representations of the Purchasers
	  	12
	 Section 6.3.
	 	 Legend
	  	12
	 Section 6.4.
	 	 Source of Funds
	  	12
	 Section 6.5.
	 	 Acknowledgment
	  	13
			
	 SECTION 7.
	 	Information as to Company	  	14
			
	 Section 7.1.
	 	 Financial and Business Information
	  	14
	 Section 7.2.
	 	 Financial Information of Westar Energy
	  	15
	 Section 7.3.
	 	 Visitation
	  	15
			
	 SECTION 8.
	 	Payment of Bonds	  	16
			
	 Section 8.1.
	 	 Place of Payments
	  	16
	 Section 8.2.
	 	 Home Office Payment
	  	16
			
	 SECTION 9.
	 	Expenses, Etc	  	16
			
	 Section 9.1.
	 	 Transaction Expenses
	  	16
	 Section 9.2.
	 	 Survival
	  	17
			
	 SECTION 10.
	 	Survival of Representations and Warranties, Entire Agreement	  	17
			
	 SECTION 11.
	 	Amendment and Waiver.	  	17
			
	 Section 11.1.
	 	 Requirements
	  	17
	 Section 11.2.
	 	 Solicitation of Holders of Bonds
	  	17
	 Section 11.3.
	 	 Binding Effect, Etc
	  	18
	 Section 11.4.
	 	 Bonds Held by Company, Etc
	  	18
			
	 SECTION 12.
	 	Notices	  	18
			
	 SECTION 13.
	 	Reproduction of Documents	  	19
			
	 SECTION 14.
	 	Confidential Information	  	19
			
	 SECTION 15.
	 	Miscellaneous	  	20
			
	 Section 15.1.
	 	 Successors and Assigns
	  	20

  

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 TABLE OF CONTENTS 
 (continued) 
  

					
	 Section
	 	 	  	Page
	 Section 15.2.
	 	 Severability
	  	20
	 Section 15.3.
	 	 Construction
	  	20
	 Section 15.4.
	 	 Counterparts
	  	20
	 Section 15.5.
	 	 Governing Law
	  	21

  

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 ATTACHMENTS TO BOND PURCHASE AGREEMENT:

  

					
	 SCHEDULE A
	 	—	    	Information Relating to Purchasers
			
	 SCHEDULE B
	 	—	    	Defined Terms
			
	 SCHEDULE 5.3
	 	—	    	Disclosure Documents
			
	 SCHEDULE 5.5
	 	—	    	Financial Statements
			
	 SCHEDULE 5.7
	 	—	    	Governmental Authorizations
			
	 SCHEDULE 5.8
	 	—	    	Litigation
			
	 SCHEDULE 5.15(a)
	 	—	    	Existing Indebtedness
			
	 SCHEDULE 5.15(b)
	 	—	    	Future Liens
			
	 SCHEDULE 5.15(c)
	 	—	    	Amendments to Indenture
			
	 EXHIBIT A
	 	—	    	Form of Supplemental Indenture
			
	 EXHIBIT 4.4(a)
	 	—	    	Form of Opinion of General Counsel of the Company
			
	 EXHIBIT 4.4(b)
	 	—	    	Form of Opinion of Special Counsel for the Company
			
	 EXHIBIT 4.4(c)
	 	—	    	Form of Opinion of Special Counsel for the Purchasers

 KANSAS GAS AND ELECTRIC
COMPANY  
 120 East First Street 
 Wichita, Kansas 67202 
 $50,000,000 First Mortgage Bonds, 6.15% Series A Due May 15, 2023 
 $100,000,000 First Mortgage Bonds, 6.64% Series B Due May 15, 2038 
 Dated as of May 15, 2008 
 To the Purchasers listed in 
   the attached Schedule A: 
 Ladies and Gentlemen: 
 KANSAS GAS AND ELECTRIC COMPANY, a Kansas corporation (the
“Company”), agrees with the Purchasers listed in the attached Schedule A (the ‘Purchasers”) to this Bond Purchase Agreement (this “Agreement”) as follows: 
 SECTION 1. AUTHORIZATION OF BONDS. 
 Section 1.1. Authorization of the Bonds. The Company has authorized the issue and sale of $150,000,000 aggregate principal amount of its First Mortgage Bonds consisting of (a) $50,000,000 aggregate
principal amount of its First Mortgage Bonds, 6.15% Series A Due May 15, 2023 (the “Series A Bonds”) and (b) $100,000,000 aggregate principal amount of its First Mortgage Bonds, 6.64% Series B Due May 15, 2038 (the
“Series B Bonds”). The Series A Bonds and the Series B Bonds are herein collectively referred to as the “Bonds”. The term “Bonds” shall include any such bonds issued in substitution therefor pursuant to
the terms and provisions of the Supplemental Indenture (as hereinafter defined) and the Indenture (as hereinafter defined). The Series A Bonds and the Series B Bonds shall be substantially in the form set out in the Supplemental Indenture, with such
changes therefrom, if any, as may be approved by the Purchasers and the Company. Certain capitalized and other terms used in this Agreement are defined in Schedule B to this Agreement; and references to a “Schedule” or an
“Exhibit” are, unless otherwise specified, to a Schedule or an Exhibit attached to this Agreement. 
 Section 1.2.
Description of the Bonds. 
 (a) The Series A Bonds shall be dated the date of issue, shall bear interest on the unpaid principal balance
thereof from the date of issuance at the rate of 6.15% per annum and shall have such other characteristics as set forth in the Supplemental Indenture. 
 (b) The Series B Bonds shall be dated the date of issue, shall bear interest on the unpaid principal balance thereof from the date of issuance at the rate of 6.64% per annum and shall have such other
characteristics as set forth in the Supplemental Indenture. 

 SECTION 2. SALE AND PURCHASE OF BONDS;
SECURITY. 
 Section 2.1. Sale and Purchase of the Bonds. Subject to the terms and conditions of this Agreement,
the Company will issue and sell to each Purchaser and each Purchaser will purchase from the Company, at the Closing provided for in Section 3, Bonds in the principal amount specified opposite such Purchaser’s name in Schedule A at the
purchase price of 100% of the principal amount thereof. The obligations of each Purchaser hereunder are several and not joint obligations and no Purchaser shall have any obligation or any liability to any Person for the performance or
non-performance of any other Purchaser hereunder. 
 Section 2.2. Security for the Bonds. The Bonds are to be issued under and in
accordance with a Supplemental Indenture dated on or about May 15, 2008 (the “Supplemental Indenture”) between the Company and The Bank of New York Trust Company, N.A., a national banking association, as successor corporate
trustee to Guaranty Trust Company of New York (together with any successors and assigns in such capacity, the “Corporate Trustee”) and Judith L. Bartolini, an individual, in her capacity as successor individual trustee (together
with any successors and assigns in such capacity, the “Individual Trustee” and, together with the Corporate Trustee, the “Trustees”), which shall be substantially in the form attached hereto as Exhibit A. The
Supplemental Indenture is a supplement to the Mortgage and Deed of Trust dated as of April 1, 1940 between the Company (as successor by merger to Kansas Gas and Electric Company, a West Virginia corporation) and the Corporate Trustee, as the
successor corporate trustee thereunder, and the Individual Trustee, as the successor individual trustee thereunder, as heretofore amended and supplemented by fifty supplemental indentures thereto (the “Indenture”; and the Indenture
as amended and supplemented by the Supplemental Indenture, the “Amended Indenture”). The payment of all amounts due with respect to the Bonds will be secured by the collateral granted under, and will have the benefits of, the
Amended Indenture. 
 SECTION 3. CLOSING. 
 The sale and purchase of the Bonds to be purchased by each Purchaser shall occur at the offices of
Schiff Hardin LLP, 900 Third Avenue, 23rd Floor, New York, New York 10022, at 10:00 a.m., New York time, at a closing (the
“Closing”) on May 15, 2008 or on such other Business Day thereafter as may be agreed upon by the Company and the Purchasers. At the Closing, the Company shall cause to be duly executed, authenticated and delivered to each
Purchaser the Bonds of each series to be purchased by such Purchaser in the form of a single Bond of such series (or such greater number of Bonds of such series in denominations of at least $1,000,000 as such Purchaser may request) dated the date of
the Closing and registered in such Purchaser’s name (or in the name of its nominee), against delivery by such Purchaser to the Company or its order of immediately available funds in the amount of the purchase price therefor by wire transfer of
immediately available funds for the account of the Company to the bank account of the Company specified in the funding instructions letter provided pursuant to Section 4.15. If at the Closing the Company shall fail to tender such Bonds to any
Purchaser as provided above in this Section 3, or any of the conditions specified in Section 4 shall not have been fulfilled to any Purchaser’s reasonable satisfaction, such Purchaser shall, at its election, be relieved of all further
obligations under this Agreement, without thereby waiving any rights such Purchaser may have by reason of such failure or such nonfulfillment. 
  

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 SECTION 4. CONDITIONS TO CLOSING. 
 Each Purchaser’s obligation to purchase and pay for the Bonds to be sold to such Purchaser at the Closing is subject to the fulfillment to such
Purchaser’s satisfaction, prior to or at the Closing, of the following conditions: 
 Section 4.1. Representations and
Warranties. The representations and warranties of the Company in this Agreement and the other Bond Documents to which it is party shall be correct in all material respects (except for such representations and warranties that are qualified by
materiality which representations and warranties shall be correct in all respects) when made and at the time of the Closing. 
 Section 4.2. Performance; No Default. The Company shall have performed and complied with all agreements and conditions contained in this Agreement and each other Bond Document to which it is party required to be performed or
complied with by it prior to or at the Closing and after giving effect to the issue and sale of the Bonds (and the application of the proceeds thereof as contemplated by Section 5.14), no Default or Event of Default shall have occurred and be
continuing. 
 Section 4.3. Compliance Certificates. 
 (a) Officer’s Certificate. The Company shall have delivered to such Purchaser an Officer’s Certificate, dated the date of the Closing,
certifying that the conditions specified in Sections 4.1, Section 4.2, Section 4.9, the second sentence of Section 4.10 and Section 4.16 have been fulfilled. 
 (b) Secretary’s Certificate. The Company shall have delivered to such Purchaser a certificate of its Secretary or Assistant Secretary, dated
the date of the Closing, certifying as to the resolutions attached thereto and other corporate proceedings relating to the authorization, execution and delivery of the Bonds, this Agreement and the other Bond Documents to which it is party.

 Section 4.4. Opinions of Counsel. Such Purchaser shall have received opinions in form and substance satisfactory to such
Purchaser, dated the date of the Closing (a) from Larry D. Irick, Esq., Vice President, General Counsel and Corporate Secretary of Westar Energy, substantially in the form set forth in Exhibit 4.4(a), (b) from Davis Polk &
Wardwell, special counsel for the Company, substantially in the form set forth in Exhibit 4.4(b) (and the Company hereby instructs such special counsel to deliver such opinion to the Purchasers) and (c) from Schiff Hardin LLP, special counsel
to the Purchasers in connection with such transactions, substantially in the form set forth in Exhibit 4.4(c). 
 Section 4.5.
Purchase Permitted By Applicable Law, Etc. On the date of the Closing, such Purchaser’s purchase of the Bonds shall (a) be permitted by the laws and regulations of each jurisdiction to which such Purchaser is subject, without recourse
to provisions (such as Section 1405(a)(8) of the New York Insurance Law) permitting limited investments by insurance companies without restriction as to the character of the particular investment, (b) not violate any applicable law or
regulation (including, without limitation, Regulation T, U or X of the Board of Governors of the Federal Reserve System) and (c) not subject such Purchaser to any tax, penalty 

  

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or liability under or pursuant to any applicable law or regulation, which law or regulation was not in effect on the date of this Agreement. If requested by
such Purchaser, such Purchaser shall have received an Officer’s Certificate certifying as to such matters of fact as such Purchaser may reasonably specify to enable such Purchaser to determine whether such purchase is so permitted. 

Section 4.6. Sale of Other Bonds. On the Closing, the Company shall sell to each other Purchaser and each other Purchaser shall purchase
the Bonds to be purchased by it at the Closing as specified in Schedule A. 
 Section 4.7. Payment of Special Counsel Fees.
Without limiting the provisions of Section 9.1, the Company shall have paid on or before the Closing the reasonable fees, charges and disbursements of special counsel to the Purchasers referred to in Section 4.4(c), to the extent not
theretofore paid by the Company on or prior to the date of this Agreement, and reflected in a statement of such counsel rendered to the Company at least one Business Day prior to the Closing. 
 Section 4.8. Private Placement Number. A Private Placement Number issued by Standard & Poor’s CUSIP Service Bureau (in
cooperation with the Securities Valuation Office of the National Association of Insurance Commissioners) shall have been obtained for each series of the Bonds. 
 Section 4.9. Changes in Corporate Structure. The Company shall not have changed its jurisdiction of incorporation or been a party to any merger or consolidation and shall not have succeeded to all or any
substantial part of the liabilities of any other entity, at any time following the date of the most recent financial statements referred to in Schedule 5.5. 
 Section 4.10. Supplemental Indenture. The Supplemental Indenture shall have been duly authorized, executed and delivered by the Company and the Trustees and shall constitute the legal, valid and binding
contract and agreement of each such Person. All instruments, certificates, opinions and other documents required under the Supplemental Indenture and the Indenture in connection with the execution, delivery and performance of the Bonds shall have
been duly authorized, executed and delivered and all conditions precedent set forth in the Indenture with respect to the consummation of the Supplemental Indenture shall have been satisfied. 
 Section 4.11. Execution, Authentication and Delivery of Bonds. The Bonds to be purchased by such Purchaser shall have been duly authorized,
executed and delivered by the Company and duly authenticated and delivered by the Corporate Trustee to the Corporate Trustee, in each case, pursuant to the terms of the Amended Indenture and in accordance with applicable law. 
 Section 4.12. Indenture Recording and Filing. The Indenture and the Amended Indenture shall have been duly recorded as an indenture on real
property and duly filed, recorded or indexed as a security interest in personal property so as to constitute a valid, perfected first Lien on all of the Company’s property covered by the Indenture and the Amended Indenture, all in accordance
with applicable law, and the Company shall have caused satisfactory evidence thereof to be furnished to such Purchasers and special counsel to the Purchasers. 
  

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 Section 4.13. Perfection of Liens on Mortgaged and Pledged Property. All actions necessary to
register, record and perfect the Liens in and to the Mortgaged and Pledged Property in favor of the Trustees, for the equal and ratable benefit of the holders of the Bonds and the holders of the other bonds then outstanding under the Indenture, to
be granted on or prior to the date of Closing (including, without limitation, the filing of all appropriate financing statements, the registration of all Security Documents where necessary, the recording of all appropriate documents with public
officials and the payment of all fees and taxes in relation thereto) shall have been taken in accordance with the provisions of the Security Documents. 
 Section 4.14. Approvals, Etc. The Company shall have furnished to such Purchaser and special counsel to the Purchasers true and correct copies of all certificates, approvals, authorizations, consents,
recordings and filings necessary for the execution, delivery or performance by the Company of this Agreement, the Bonds, the Supplemental Indenture and the other Bond Documents including, without limitation, (a) the consents and approvals
referred to in Section 5.7 and in the Indenture, if any, and (b) such recordings and filings as may be necessary to create and maintain a valid, perfected first Lien on all of the Company’s property covered by the Bond Documents to
secure all of the Company’s obligations under the Bond Documents, all in accordance with applicable law. 
 Section 4.15.
Funding Instructions. At least three Business Days prior to the date of the Closing, such Purchaser shall have received written instructions executed by a Responsible Officer of the Company on letterhead of the Company directing the manner of
the payment of the purchase price of the Bonds and setting forth (a) the name and address of the transferee bank, (b) such transferee bank’s ABA number, (c) the account name and number into which the purchase price for the Bonds
is to be deposited and (d) the name and telephone number of the account representative responsible for verifying receipt of such funds. 
 Section 4.16. No Event of Default. No Event of Default shall have occurred and be continuing. 
 Section 4.17.
Ratings. The rating assigned by any nationally recognized statistical rating organization to any first mortgage bonds of the Company as of the day of Closing shall not have been lowered since the date of this Agreement, and no such agency shall
have announced that it has placed any of such debt securities on what is commonly termed a “watch list” for possible downgrading. 
 Section 4.18. Proceedings and Documents. All corporate, trust and other proceedings in connection with the transactions contemplated by this Agreement and all documents and instruments incident to such transactions shall be
reasonably satisfactory to such Purchaser and special counsel to the Purchasers, and such Purchaser and special counsel to the Purchasers shall have received all such counterpart originals or certified or other copies of such documents, and any such
certificate of a Responsible Officer of the Company as to the matters contemplated herein, as such Purchaser or special counsel to the Purchasers may reasonably request. 
  

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 SECTION 5. REPRESENTATIONS AND WARRANTIES OF
THE COMPANY. 
 The Company represents and warrants to each Purchaser that: 
 Section 5.1. Organization; Power and Authority. The Company has been duly incorporated and is validly existing as a corporation in good
standing under the laws of the State of Kansas with full corporate power and authority to carry on the electric utility business in which it is engaged, and is duly qualified to do business as a foreign corporation and is in good standing under the
laws of each jurisdiction in which the conduct of its business or the ownership of, or the leasing of, property requires such qualification except where the failure to so qualify would not reasonably be expected to have a material adverse effect on
the business, properties or condition (financial or otherwise) of the Company (a “Material Adverse Effect”). The Company has the corporate power and authority to execute and deliver this Agreement, the Bonds and the other Bond
Documents to which it is a party and to perform the provisions hereof and thereof. 
 Section 5.2. Authorization, Etc. This
Agreement has been duly authorized, executed and delivered by the Company and constitutes the legal, valid and binding agreement of the Company enforceable against the Company in accordance with its terms except that the enforcement hereof may be
subject to (a) bankruptcy, insolvency, reorganization, fraudulent conveyance, moratorium or other similar laws now or hereafter in effect relating to or affecting creditors’ rights or remedies generally, (b) the remedy of specific
performance and injunctive and other forms of equitable relief may be subject to equitable defenses and to the discretion of the court before which any proceedings therefor may be brought (regardless of whether enforcement is sought in a proceeding
at law or in equity) and (c) any indemnification or contribution provision that may be contrary to or inconsistent with public policy (collectively, the “Enforceability Limitations”). The Indenture and the Supplemental
Indenture have been duly and validly authorized, the Indenture has been duly executed and delivered, duly qualified under the Trust Indenture Act of 1939, as amended, and, assuming due authorization, execution and delivery thereof by the Trustees,
constitutes, and the Supplemental Indenture when duly executed and delivered and, assuming due authorization, execution and delivery thereof by the Trustees, shall constitute, a legal, valid and binding instrument enforceable against the Company in
accordance with its terms, subject to the Enforcement Limitations. The Bonds have been duly authorized and, when executed and authenticated in accordance with the provisions of the Amended Indenture and delivered to and paid for by the Purchasers
pursuant to this Agreement, will constitute legal, valid and binding obligations of the Company entitled to the Lien of and the benefits provided by the Amended Indenture, subject to the Enforceability Limitations. 
 Section 5.3. Disclosure. The Company, through its agents, Barclays Capital Inc. and BNP Paribas Securities Corp., has delivered to each
Purchaser a copy of a Private Placement Memorandum, dated April 2008 (the “Memorandum”), relating to the transactions contemplated hereby. The Memorandum fairly describes, in all material respects, the general nature of the business
and principal properties of the Company. This Agreement, the other Bond Documents, the Memorandum (other than statistical data and industry information derived from third-party sources) and the documents, certificates or other writings delivered to
the Purchasers by or on behalf of the Company in connection with the transactions contemplated hereby and identified in Schedule 5.3, and the financial statements listed in Schedule 5.5 (this Agreement, the other Bond Documents, the Memorandum and
such documents, certificates or other writings and such financial statements delivered to each Purchaser prior to May 1, 2008 being referred to, collectively, as the “Disclosure Documents”), taken as a whole, do not contain any
untrue statement of a material fact or omit to state any material fact necessary to make the statements therein not misleading in light of the circumstances under which they were made. Without 

  

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undertaking to independently verify statistical data and industry information derived from third-party sources and included in the Memorandum, the Company
believes such statistical data and industry information to be accurate in all material respects. Except as disclosed in the Disclosure Documents, since December 31, 2007, there has been no change in the business, properties or financial
condition of the Company except changes that individually or in the aggregate would not reasonably be expected to have a Material Adverse Effect. 
 Section 5.4. Subsidiaries. The Company does not have any Subsidiaries. 
 Section 5.5. Financial Statements.
The financial statements and schedules of the Company listed on Schedule 5.5 present fairly in all material respects the financial condition, results of operations and cash flows of the Company as of the dates and for the periods indicated and have
been prepared in conformity with generally accepted accounting principles applied on a consistent basis throughout the periods involved (except as otherwise noted therein). 
 Section 5.6. Compliance with Laws, Other Instruments, Etc. Neither the execution and delivery of this Agreement, the issue and sale of the
Bonds, nor the performance by the Company of its obligations hereunder or under the other Bond Documents will conflict with, result in a breach or violation or imposition of any Lien upon any property or assets of the Company pursuant to:
(a) the charter or by-laws of the Company; (b) the terms of any indenture (including the Indenture), contract, lease, mortgage, deed of trust, note agreement, loan agreement or other material agreement, obligation, condition, covenant or
instrument to which the Company is a party or bound or to which its property is subject or (c) any statute, law, rule, regulation, judgment, order or decree applicable to the Company of any court, regulatory body, administrative agency,
governmental body, arbitrator or other authority having jurisdiction over the Company or any of its properties, except in the case of clauses (a) and (c) above, for any default or violation that would not have a Material Adverse Effect.

 Section 5.7. Governmental Authorizations, Etc. No consent, approval, authorization, filing with or order of (a) the KCC
or (b) to the knowledge of the Company, any court or governmental agency or body is required in connection with the transactions contemplated herein, other than as set forth on Schedule 5.7. On the date of the Closing, each item listed on
Schedule 5.7 shall have been duly obtained, will be final and in full force and effect and will not be subject to appeal or any condition which has not been satisfied. 
 Section 5.8. Litigation; Observance of Agreements, Statutes and Orders. (a) Except as set forth on Schedule 5.8, no action, suit or proceeding by or before any court or governmental agency, authority
or body or any arbitrator involving the Company or its property is pending or, to the knowledge of the Company, threatened that (1) could reasonably be expected to have a material adverse effect on the performance of this Agreement or any of
the other Bond Documents, or the consummation of any of the transactions contemplated hereby or thereby or (2) could reasonably be expected to have a Material Adverse Effect. 
 (b) The Company is not in violation or default of (1) any provision of its charter or by-laws, (2) the terms of any indenture (including,
without limitation, the Indenture), contract, lease, mortgage, deed of trust, note agreement, loan agreement or other agreement, obligation, condition, covenant or instrument to which the Company is a party or bound or to 

  

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which its property is subject or (3) any statute, law, rule, regulation, judgment, order or decree applicable to the Company of any court, regulatory
body, administrative agency, governmental body, arbitrator or other authority having jurisdiction over the Company or any of its properties, as applicable, except, in the cases of (2) and (3), for violations or defaults which would not
reasonably be expected to have a Material Adverse Effect. 
 Section 5.9. Taxes. The Company has filed all foreign, federal,
state and local tax returns that are required to be filed or has requested extensions thereof (except in any case in which the failure so to file would not reasonably be expected to have a Material Adverse Effect) and to the knowledge of the Company
has paid all taxes required to be paid by it and any other assessment, fine or penalty levied against it, to the extent that any of the foregoing is due and payable, except for any such assessment, fine or penalty that is currently being contested
in good faith or as would not reasonably be expected to have a Material Adverse Effect. 
 Section 5.10. Title to Property; Mortgaged
and Pledged Property. (a) The Company owns or leases all such properties as are necessary to the conduct of its operations as presently conducted, except where the failure to own or lease such properties would not reasonably be expected to
have a Material Adverse Effect. 
 (b) The Company has good and sufficient title to, or a satisfactory easement in, all the real property,
and has good and sufficient title to all the personal property described in the Indenture or to be described in the Amended Indenture as owned by it and subject to the Lien of the Indenture and the Amended Indenture, as the case may be, except any
which may have been released from the Lien thereof pursuant to the provisions thereof, subject only to (1) minor leases and Liens of judgments not prior to the Lien of the Indenture and the Amended Indenture, as the case may be, which do not
interfere with the Company’s business, (2) minor defects, irregularities and deficiencies in titles of properties and rights-of-way which do not materially impair the use of such property and rights-of-way for the purposes for which they
are held by the Company and (3) other permitted Liens as defined in the Indenture and the Amended Indenture, as the case may be; subject only as set forth above in this clause, the Indenture constitutes, and the Amended Indenture will
constitute, a valid, direct first mortgage Lien upon said properties and upon all franchises owned by the Company, which properties and franchises include all the physical properties and franchises of the Company (other than classes of property
expressly excepted in the Indenture and the Amended Indenture, as the case may be); all physical properties and franchises (other than classes of property expressly excepted in the Indenture and the Amended Indenture, as the case may be, as
aforesaid) thereafter acquired by the Company will, upon such acquisition, become subject to the Lien thereof, subject, however, to Liens permitted thereby and to any Liens existing or placed upon such properties at the time of the acquisition
thereof by the Company; and the descriptions of all such properties and assets contained in the granting clauses of the Indenture are, and the description of such properties and assets contained in the granting clauses of the Amended Indenture will
be, correct and adequate for the purposes of the Indenture and the Amended Indenture, as the case may be. 
 Section 5.11. Licenses,
Permits, Etc. The Company possesses valid franchises, certificates of convenience and authority, licenses and permits authorizing it to carry on the electric utility business in which it is engaged, and the Company has not received any notice of
proceedings relating to the revocation or modification of any such franchise, certificate of 

  

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convenience and authority, license or permit which, singly or in the aggregate, if the subject of an unfavorable decision, ruling or finding, would
reasonably be expected to have a Material Adverse Effect. 
 Section 5.12. ERISA. 
 (a) Neither the Company nor any predecessor thereof sponsors, maintains or contributes to, or has since March 1, 1995 sponsored, maintained or
contributed to any Employee Plan subject to ERISA. 
 (b) Each ERISA Affiliate has operated and administered each Employee Plan in compliance
with all applicable laws except for such instances of noncompliance as have not resulted in and would not reasonably be expected to result in a Material Adverse Effect. No ERISA Affiliate has incurred any liability pursuant to Title I or IV of
ERISA or the penalty or excise tax provisions of the Code relating to employee benefit plans (as defined in Section 3 of ERISA), and no event, transaction or condition has occurred or exists that would reasonably be expected to result in the
incurrence of any such liability by any ERISA Affiliate, or in the imposition of any Lien on any of the rights, properties or assets of the Company or any ERISA Affiliate, in either case pursuant to Title I or IV of ERISA or to such penalty or
excise tax provisions or to Section 401(a)(29) or 412 of the Code or Section 4068 of ERISA, other than such liabilities or Liens as would not, individually or in the aggregate, have a Material Adverse Effect. 
 (c) No ERISA Affiliates have incurred withdrawal liabilities (and are not subject to contingent withdrawal liabilities) under Section 4201 or 4204
of ERISA in respect of Multiemployer Plans that, individually or in the aggregate, would have a Material Adverse Effect. 
 (d) The execution
and delivery of this Agreement and the issuance and sale of the Bonds hereunder and under the Amended Indenture will not involve any transaction that is subject to the prohibitions of Section 406 of ERISA or in connection with which a tax could
be imposed pursuant to Section 4975(c)(1)(A)-(D) of the Code. The representation by the Company to each Purchaser in the first sentence of this Section 5.12(d) is made in reliance upon and subject to the accuracy of such
Purchaser’s representation in Section 6.5 as to the sources of the funds to be used to pay the purchase price of the Bonds to be purchased by such Purchaser. 
 Section 5.13. Private Offering by the Company. Neither the Company nor anyone acting on its behalf has offered the Bonds or any securities that would be integrated with the Bonds for sale to, or solicited
any offer to buy any of the same from, or otherwise approached or negotiated in respect thereof with, any Person other than the Purchasers and not more than 50 other Institutional Investors, each of which has been offered the Bonds at a private sale
for investment. Neither the Company nor anyone acting on its behalf has taken, or will take, any action that would subject the issuance or sale of the Bonds to the registration requirements of Section 5 of the Securities Act or to the
registration requirements of any securities or blue sky laws of any applicable jurisdiction. 
  

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 Section 5.14. Use of Proceeds; Margin Regulations. The Company will apply the proceeds of the
sale of the Bonds to repay indebtedness of Westar Energy which is guaranteed by the Company and for other general corporate purposes of the Company including, but not limited to, funding operations and acquiring capital equipment. No part of the
proceeds from the sale of the Bonds hereunder will be used, directly or indirectly, for the purpose of buying or carrying any margin stock within the meaning of Regulation U of the Board of Governors of the Federal Reserve System (12 CFR 221), or
for the purpose of buying or carrying or trading in any securities under such circumstances as to involve the Company in a violation of Regulation X of said Board (12 CFR 224) or to involve any broker or dealer in a violation of
Regulation T of said Board (12 CFR 220). Margin stock does not constitute more than 25% of the value of the assets of the Company and the Company does not have any present intention that margin stock will constitute more than 25% of the value
of such assets. As used in this Section, the terms “margin stock” and “purpose of buying or carrying” shall have the meanings assigned to them in said Regulation U. 
 Section 5.15. Existing Indebtedness; Future Liens. (a) Schedule 5.15(a) sets forth a complete and correct list of all outstanding
Indebtedness of the Company as of March 31, 2008. The Company is not in default and no waiver of default is currently in effect in the payment of any principal or interest on any Indebtedness of the Company and no event or condition exists with
respect to any Indebtedness of the Company that would permit (or that with notice or the lapse of time, or both, would permit) one or more Persons to cause such Indebtedness to become due and payable before its stated maturity or before its
regularly scheduled dates of payment. 
 (b) Except as disclosed in Schedule 5.15(b), the Company has not agreed or consented to cause or
permit in the future (upon the happening of a contingency or otherwise) any of its property, whether now owned or hereafter acquired, to be subject to a Lien not permitted by the Amended Indenture. 
 (c) Except pursuant to supplemental indentures listed on Schedule 5.15(c), the Indenture has not been amended, supplemented or otherwise modified.

 Section 5.16. Foreign Assets Control Regulations, Etc. Neither the sale of the Bonds by the Company hereunder nor its use of
the proceeds thereof will violate the Trading with the Enemy Act, as amended, or any of the foreign assets control regulations of the United States Treasury Department (31 CFR, Subtitle B, Chapter V, as amended) or any enabling legislation or
executive order relating thereto. Without limiting the foregoing, neither the Company nor any Subsidiary (a) is or will become a Person whose property or interests in property are blocked pursuant to Section 1 of Executive Order 13224 of
September 23, 2001 (Blocking Property and Prohibiting Transactions with Persons Who Commit, Threaten to Commit, or Support Terrorism) (66 Fed. Reg. 49079 (2001) or (b) engages or will engage in any dealings or transactions, or be
otherwise associated, with any such Person. The Company is in compliance, in all material respects, with the Uniting and Strengthening America by Providing Appropriate Tools Required to Intercept and Obstruct Terrorism (USA Patriot Act of 2001). No
part of the proceeds from the sale of the Bonds hereunder and under the Supplemental Indenture will be used, directly or indirectly, for any payment to any governmental official or employee, political party, official of a political party, candidate
for political office or anyone else acting in an official capacity, in order to obtain, retain or direct business or obtain any improper advantage, in violation of the United States Foreign Corrupt Practices Act of 1977, as amended. 
  

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 Section 5.17. Status under Certain Statutes. The Company is not, and after giving effect to
the offering and sale of the Bonds and the application of the proceeds thereof as described in the Section 5.14 will not be, required to register as an “investment company” as such term is defined in the Investment Company Act of
1940, as amended. The Company is a public utility company in the State of Kansas and is subject to regulation as a public utility company in the State of Kansas. 
 Section 5.18. Environmental Matters. Except as disclosed in Westar Energy’s Annual Report on Form 10-K for the year ended December 31, 2007, to the Company’s knowledge, the Company is
(a) in compliance with any and all applicable foreign, federal, state and local laws and regulations relating to the protection of human health and safety, the environment or hazardous or toxic substances or wastes, pollutants or contaminants
(“Environmental Laws”), (b) have received and are in compliance with all permits, licenses or other approvals required of it under applicable Environmental Laws to conduct its businesses and (c) have not received written
notice of any actual or potential liability for the investigation or remediation of any disposal or release of hazardous or toxic substances or wastes, pollutants or contaminants, except in each case where such non-compliance with Environmental
Laws, failure to receive required permits, licenses or other approvals, or liability would not, individually or in the aggregate, reasonably be expected to have a Material Adverse Effect. 
 Section 5.19. Labor Disputes. No labor problem or dispute with the employees of the Company exists or, to the knowledge of the Company, is
threatened or imminent, and the Company is not aware of any existing or imminent labor disturbance by the employees of any of its principal suppliers, contractors or customers, that would reasonably be expected to have a Material Adverse Effect.

 Section 5.20. Perfection of Liens. The Indenture has been duly recorded and filed, and, on the date of the Closing, the
Amended Indenture will have been duly recorded and filed, in each place in which such recording or filing is required to protect and preserve the Lien of the Indenture and the Amended Indenture, as the case may be, and all taxes and recording or
filing fees required to be paid in connection with the execution, recording or filing of the Indenture and Amended Indenture have been or will have been duly paid, as the case may be. 
 SECTION 6. REPRESENTATIONS AND AGREEMENTS OF THE PURCHASERS. 
 Section 6.1. Purchase for Investment. Each Purchaser represents that it is an institutional “accredited investor” (as such term is
defined under Rule 501(a)(1), (2), (3) or (7) promulgated under the Securities Act) and that such Purchaser is purchasing the Bonds for its own account or for the account of another Institutional Investor and not with a view to the
distribution thereof, provided that the disposition of such Purchaser’s or such other Institutional Investor’s property shall at all times be within such Person’s control. Each Purchaser understands that the sale of the Bonds
is being made by the Company in reliance on a private placement exemption from registration under the Securities Act and the Bonds may be resold only if registered pursuant to the provisions of the Securities Act or if an exemption from 

  

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registration is available, except under circumstances where neither such registration nor such an exemption is required by law, and that the Company is not
required to register the Bonds under the Securities Act or to list the Bonds on any national securities exchange. 
 Section 6.2.
Additional Representations of the Purchasers. Each Purchaser further represents that it (a) has such knowledge and experience in financial and business matters as to be capable of evaluating the merits and risks of its prospective
investment in the Bonds, (b) has conducted its own investigation of the Company and the terms of the Bonds, (c) has had access to Westar Energy’s public filings with the SEC and to such financial and other information as it deems
necessary to make its decision to purchase the Bonds, (d) has been offered the opportunity to ask questions of the Company and received answers thereto, all as such Purchaser deems necessary in connection with its decision to purchase the Bonds
and (e) has the ability to bear the economic risks of such Purchaser’s prospective investment and can afford the complete loss of such investment. 
 Section 6.3. Legend. Each Purchaser understands that the Bonds will bear a legend substantially to the following effect: 
 THIS SECURITY HAS NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933 OR THE SECURITIES LAWS OF ANY OTHER STATE OR OTHER JURISDICTION. NEITHER THIS SECURITY NOR ANY INTEREST OR PARTICIPATION HEREIN MAY BE REOFFERED,
SOLD, ASSIGNED, TRANSFERRED, PLEDGED, ENCUMBERED OR OTHERWISE DISPOSED OF IN THE ABSENCE OF SUCH REGISTRATION OR UNLESS SUCH TRANSACTION IS EXEMPT FROM, OR NOT SUBJECT TO, SUCH REGISTRATION. 
 Section 6.4. Source of Funds. Each Purchaser severally represents that at least one of the following statements is an accurate representation
as to each source of funds (a “Source”) to be used by such Purchaser to pay the purchase price of the Bonds to be purchased by such Purchaser hereunder: 
 (a) the Source is an “insurance company general account” (as the term is defined in the United States Department of Labor’s Prohibited Transaction Exemption (“PTE”) 95-60) in respect of
which the reserves and liabilities (as defined by the annual statement for life insurance companies approved by the National Association of Insurance Commissioners (the “NAIC Annual Statement”)) for the general account contract(s)
held by or on behalf of any employee benefit plan together with the amount of the reserves and liabilities for the general account contract(s) held by or on behalf of any other employee benefit plans maintained by the same employer (or affiliate
thereof as defined in PTE 95-60) or by the same employee organization in the general account do not exceed 10% of the total reserves and liabilities of the general account (exclusive of separate account liabilities) plus surplus as set forth in the
NAIC Annual Statement filed with such Purchaser’s state of domicile; or 
 (b) the Source is a separate account that is maintained
solely in connection with such Purchaser’s fixed contractual obligations under which the amounts payable, or credited, to any employee benefit plan (or its related trust) that has any interest in such separate account (or to any participant or
beneficiary of such plan (including any annuitant)) are not affected in any manner by the investment performance of the separate account; or 
  

 -12- 

 (c) the Source is either (1) an insurance company pooled separate account, within the meaning of PTE
90-1 or (2) a bank collective investment fund, within the meaning of the PTE 91-38 and, except as disclosed by such Purchaser to the Company in writing pursuant to this clause (c), no employee benefit plan or group of plans maintained by the
same employer or employee organization beneficially owns more than 10% of all assets allocated to such pooled separate account or collective investment fund; or 
 (d) the Source constitutes assets of an “investment fund” (within the meaning of Part V of PTE 84-14 (the “QPAM Exemption”)) managed by a “qualified professional asset manager” or
“QPAM” (within the meaning of Part V of the QPAM Exemption), no employee benefit plan’s assets that are included in such investment fund, when combined with the assets of all other employee benefit plans established or maintained by
the same employer or by an affiliate (within the meaning of Section V(c)(1) of the QPAM Exemption) of such employer or by the same employee organization and managed by such QPAM, exceed 20% of the total client assets managed by such QPAM, the
conditions of Part I(c) and (g) of the QPAM Exemption are satisfied, neither the QPAM nor a Person controlling or controlled by the QPAM (applying the definition of “control” in Section V(e) of the QPAM Exemption) owns a 5% or more
interest in the Company and (1) the identity of such QPAM and (2) the names of all employee benefit plans whose assets are included in such investment fund have been disclosed to the Company in writing pursuant to this clause (d); or

 (e) the Source constitutes assets of a “plan(s)” (within the meaning of Section IV of PTE 96-23 (the “INHAM
Exemption”)) managed by an “in-house asset manager” or “INHAM” (within the meaning of Part IV of the INHAM Exemption), the conditions of Part I(a), (g) and (h) of the INHAM Exemption are satisfied, neither the
INHAM nor a Person controlling or controlled by the INHAM (applying the definition of “control” in Section IV(d) of the INHAM Exemption) owns a 5% or more interest in the Company and (1) the identity of such INHAM and (2) the
name(s) of the employee benefit plan(s) whose assets constitute the Source have been disclosed to the Company in writing pursuant to this clause (e); or 
 (f) the Source is a governmental plan; or 
 (g) the Source is one or more employee benefit plans, or a
separate account or trust fund comprised of one or more employee benefit plans, each of which has been identified to the Company in writing pursuant to this clause (g); or 
 (h) the Source does not include assets of any employee benefit plan, other than a plan exempt from the coverage of ERISA. 
 As used in this Section 6.4, the terms “employee benefit plan,” “governmental plan,” and “separate account” shall have
the respective meanings assigned to such terms in Section 3 of ERISA. 
 Section 6.5. Acknowledgment. Each Purchaser
understands that the Company will rely upon the truth and accuracy of the foregoing representations and agreements. If any Purchaser is 

  

 -13- 

 
acquiring Bonds as a fiduciary or agent for one or more investor accounts, such Purchaser represents that it has sole investment discretion with respect to
each such account and that it has full power to make the foregoing representations and agreements on behalf of such account. 
 SECTION 7.
INFORMATION AS TO COMPANY. 
 Section 7.1. Financial and Business
Information. The Company shall deliver to each holder of Bonds that is an Institutional Investor: 
 (a) Quarterly
Statements — within 60 days after the end of each quarterly fiscal period in each fiscal year of the Company (other than the last quarterly fiscal period of each such fiscal year), copies of 
 (1) a balance sheet of the Company as at the end of such quarter, and 
 (2) statements of income, changes in shareholders’ equity and cash flows of the Company, for such quarter and (in the case of the
second and third quarters) for the portion of the fiscal year ending with such quarter, 
 setting forth in each case in comparative form the
figures for the corresponding periods in the previous fiscal year, all in reasonable detail, prepared in accordance with GAAP applicable to quarterly financial statements generally, and certified by a Senior Financial Officer as fairly presenting,
in all material respects, the financial position of the Company and the results of its operations and cash flows, subject to changes resulting from year-end adjustments, provided, in the event the Company becomes a “reporting
issuer” under the Exchange Act, that delivery within the time period specified above of copies of the Company’s Quarterly Report on Form 10-Q prepared in compliance with the requirements therefor and filed with the SEC shall be deemed
to satisfy the requirements of this Section 7.1(a), provided, further, that the Company shall be deemed to have made such delivery of such Quarterly Report on Form 10-Q if it shall have timely made such Quarterly Report on
Form 10-Q available on “EDGAR” (such availability thereof being referred to as “Electronic Delivery”); 
 (b) Annual Statements — within 105 days after the end of each fiscal year of the Company, copies of 
 (1) a balance sheet of the Company as at the end of such year, and 
 (2) statements of
income, changes in shareholders’ equity and cash flows of the Company for such year, 
 setting forth in each case in comparative form
the figures for the previous fiscal year, all in reasonable detail, prepared in accordance with GAAP, and accompanied by an opinion thereon of independent public accountants of recognized national standing, which opinion shall state that such
financial statements present fairly, in all material respects, the financial position of the Company and the results of its operations and cash flows and have been prepared in conformity with GAAP, and that the examination of such accountants in
connection with such financial statements has been made in accordance 

  

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with generally accepted accounting standards, and that such audit provides a reasonable basis for such opinion in the circumstances; provided, in the
event the Company becomes a “reporting issuer” under the Exchange Act, that the delivery within the time period specified above of the Company’s Annual Report on Form 10-K for such fiscal year (together with the Company’s
annual report to shareholders, if any, prepared pursuant to Rule 14a-3 under the Exchange Act) prepared in accordance with the requirements therefor and filed with the SEC shall be deemed to satisfy the requirements of this Section 7.1(b),
provided, further, that the Company shall be deemed to have made such delivery of such Annual Report on Form 10-K and annual report if it shall have timely made Electronic Delivery thereof; and 
 (c) Requested Information — with reasonable promptness, such other data and information relating to the financial condition of
the Company or the ability of the Company to perform its obligations hereunder, under the Bonds and under the other Bond Documents as any such holder of Bonds may from time to time reasonably request or such information regarding the Company
required to satisfy the requirements of 17 C.F.R. §230.144A, as amended from time to time, in connection with any contemplated transfer of Bonds. 
 If
the Company shall have one or more Subsidiaries during any fiscal period for which financial statements are being delivered pursuant to sub-paragraphs (a) or (b) of this Section 7.1, each of the financial statements described in such
sub-paragraphs shall be deemed to refer to the consolidated financial statements of the Company and such Subsidiaries. 
 Section 7.2. Financial Information of Westar Energy. If at any time while any Bonds are outstanding (a) Westar Energy shall not be a “reporting issuer” under the Exchange Act, (b) no series of first mortgage
bonds or any other debt securities of the Company are then rated by a nationally recognized statistical ratings organization and (c) Westar Energy is an Affiliate of the Company, then, within the respective periods provided in
Section 7.1(a) and (b) above, the Company shall deliver or cause to be delivered to each holder of Bonds that is an Institutional Investor, financial statements of the character and for the dates and periods as in said Sections 7.1(a)
and (b) of Westar Energy. 
 Section 7.3. Visitation. The Company shall permit the representatives of each holder of Bonds
that is an Institutional Investor: 
 (a) No Default — if no Default or Event of Default then exists, at the
expense of such holder and upon reasonable prior notice to the Company, but no more than two times during any 12-month period, to visit, during normal business hours, the principal executive office of the Company, to discuss the affairs, finances
and accounts of the Company and its Subsidiaries with the Company’s officers, and (with the consent of the Company, which consent will not be unreasonably withheld) its independent public accountants, and (with the consent of the Company, which
consent will not be unreasonably withheld) to visit the other offices and properties of the Company and each Subsidiary; and 
  

 -15- 

 (b) Default — if a Default or Event of Default then exists, at the expense of
the Company and upon reasonable prior notice to the Company, to visit and inspect, during normal business hours, any of the offices or properties of the Company or any Subsidiary, to examine all their respective books of account, records, reports
and other papers, to make copies and extracts therefrom, and to discuss their respective affairs, finances and accounts with their respective officers and independent public accountants (and by this provision the Company authorizes said accountants
to discuss the affairs, finances and accounts of the Company and its Subsidiaries), all as often as may be requested. 
 SECTION 8. PAYMENT
OF BONDS. 
 Section 8.1. Place of Payments. Subject to Section 8.2, payments of principal of,
and premium, if any, and interest becoming due and payable on, the Bonds shall be made in accordance with the terms and provisions of the Supplemental Indenture and the Indenture. 
 Section 8.2. Home Office Payment. So long as any Purchaser or its nominee shall be the holder of any Bond, and notwithstanding anything
contained in Section 8.1 or any other Bond Document to the contrary, the Company will (or will cause its agent to) pay all sums becoming due with respect to such Bond (including, without limitation, for principal, premium, if any, and interest)
by the method and at the address specified for such purpose for such Purchaser in Schedule A, or by such other method or at such other address as such Purchaser shall have from time to time specified to the Company in writing for such purpose,
without the presentation or surrender of such Bond or the making of any notation thereon, except that upon written request of the Company made concurrently with or reasonably promptly after payment or redemption in full of any Bond, such Purchaser
shall surrender such Bond for cancellation, reasonably promptly after any such request, to the Company at its principal executive office or to the Corporate Trustee at its principal corporate trust office. Prior to any sale or other disposition of
any Bond held by any Purchaser or its nominee such Person will, at its election, either endorse thereon the amount of principal paid thereon and the last date to which interest has been paid thereon or surrender such Bond to the Company or the
Corporate Trustee in exchange for a new Bond or Bonds of the same series pursuant to the terms of the Indenture. The Company will afford the benefits of this Section 8.2 to any Institutional Investor that is the direct or indirect transferee of
any Bond purchased by any Purchaser under the Supplemental Indenture and this Agreement and has made the same agreement relating to such Bond as such Purchaser has made in this Section 8.2. 
 SECTION 9. EXPENSES, ETC. 
 Section 9.1. Transaction Expenses. Whether or not the transactions contemplated hereby are consummated, the Company will pay all costs and expenses (including reasonable attorneys’ fees of a special counsel and, if
reasonably required by the Required Holders, one local or other counsel, but excluding the allocated overhead of any internal counsel) incurred by each Purchaser and each other holder of Bonds in connection with such transactions and in connection
with any amendments, waivers or consents under or in respect of this Agreement or any other Bond Document (whether or not such amendment, waiver or consent becomes effective). Notwithstanding the foregoing, in connection with the Closing, the
Company will be 

  

 -16- 

 
required only to pay the attorneys’ fees of a single special counsel acting for all Purchasers. The Company will pay, and will save each Purchaser and
each other holder of Bonds harmless from, all claims in respect of any fees, costs or expenses, if any, of brokers and finders (other than those, if any, retained by such Person in connection with its purchase of the Bonds). The Company agrees to
save harmless and indemnify each Purchaser and each other holder of Bonds from and against any liability resulting from the failure to reimburse such Person for any required documentary stamps, recordation and transfer taxes, recording costs, or any
other expenses incurred by such Person in connection with this Agreement which are required by the terms of this Agreement to be paid or reimbursed by the Company. 
 Section 9.2. Survival. The obligations of the Company under this Section 9 will survive the payment or transfer of any Bond, the enforcement, amendment or waiver of any provision of this Agreement,
the Bonds or any other Bond Document, and the termination of this Agreement. 
 SECTION 10. SURVIVAL OF
REPRESENTATIONS AND WARRANTIES, ENTIRE AGREEMENT. 
 All
representations and warranties contained herein shall survive the execution and delivery of this Agreement, the Bonds and the other Bond Documents, the purchase or transfer by any Purchaser of any Bond or portion thereof or interest therein and the
payment of any Bond, and may be relied upon by any subsequent holder of Bonds, regardless of any investigation made at any time by or on behalf of any Purchaser or any other holder of Bonds. All statements contained in any certificate or other
instrument delivered by or on behalf of the Company pursuant to this Agreement or the other Bond Documents shall be deemed representations and warranties of the Company under this Agreement. Subject to the preceding sentence, this Agreement, the
Bonds and the other Bond Documents embody the entire agreement and understanding between each Purchaser and the Company and supersede all prior agreements and understandings relating to the subject matter hereof. 
 SECTION 11. AMENDMENT AND WAIVER. 
 Section 11.1. Requirements. This Agreement may be amended, and the observance of any term hereof may be waived (either retroactively or prospectively), with (and only with) the written consent of the
Company and the Required Holders, except that (a) no amendment or waiver of any of the provisions of Section 1, 2, 3, 4, 5 or 6 hereof, or any defined term (as it is used therein), will be effective as to any holder of Bonds unless
consented to by such holder in writing and (b) no such amendment or waiver may, without the written consent of the holder of each Bond at the time outstanding affected thereby amend any of Sections 11 or 14. 
 Section 11.2. Solicitation of Holders of Bonds. 
 (a) Solicitation. The Company will provide each holder of Bonds (irrespective of the amount of Bonds then owned by it) with sufficient information, sufficiently far in advance of the date a decision is
required, to enable such holder to make an informed and considered decision with respect to any proposed amendment, waiver or consent in respect of any of the provisions hereof or of any other Bond Document. The Company will deliver executed or true
and correct copies of each amendment, waiver or consent effected pursuant to 

  

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the provisions of this Section 11 to each holder of outstanding Bonds promptly following the date on which it is executed and delivered by, or receives
the consent or approval of, the requisite holders of Bonds. 
 (b) Payment. The Company will not directly or indirectly pay or cause
to be paid any remuneration, whether by way of supplemental or additional interest, fee or otherwise, or grant any security or provide other credit support, to any holder of Bonds as consideration for or as an inducement to the entering into by any
holder of Bonds of any waiver or amendment of any of the terms and provisions hereof or of the Supplemental Indenture unless such remuneration is concurrently paid, or security is concurrently granted or other credit support concurrently provided,
on the same terms, ratably to each holder of Bonds then outstanding even if such holder did not consent to such waiver or amendment. 
 Section 11.3. Binding Effect, Etc. Any amendment or waiver consented to as provided in this Section 11 applies equally to all holders of Bonds and is binding upon them and upon each future holder of any Bond and upon the
Company without regard to whether such Bond has been marked to indicate such amendment or waiver. No such amendment or waiver will extend to or affect any obligation, covenant, agreement, Default or Event of Default not expressly amended or waived
or impair any right consequent thereon. No course of dealing between the Company and the holder of any Bond nor any delay in exercising any rights hereunder or under any Bond shall operate as a waiver of any rights of any holder of such Bond. As
used herein, the term “this Agreement” and references thereto shall mean this Agreement as it may from time to time be amended or supplemented. 
 Section 11.4. Bonds Held by Company, Etc. Solely for the purpose of determining whether the holders of the requisite percentage of the aggregate principal amount of Bonds then outstanding approved or
consented to any amendment, waiver or consent to be given under this Agreement or the Bonds, or have directed the taking of any action provided herein or in the Bonds to be taken upon the direction of the holders of a specified percentage of the
aggregate principal amount of Bonds then outstanding, Bonds directly or indirectly owned by the Company or any of its Affiliates shall be deemed not to be outstanding. 
 SECTION 12. NOTICES. 
 All notices and communications provided for hereunder shall be in
writing and sent (a) by telecopy if the sender on the same day sends a confirming copy of such notice by a recognized overnight delivery service (charges prepaid), (b) by registered or certified mail with return receipt requested (postage
prepaid) or (c) by a recognized overnight delivery service (charges prepaid). Any such notice must be sent: 
 (1) if to
any Purchaser or its nominee, to such Purchaser or its nominee at the address specified for such communications on Schedule A, or at such other address as such Purchaser or its nominee shall have specified to the Company in writing, 

(2) if to any other holder of any Bond, to such holder at such address as such other holder shall have specified to the Company in
writing, or 
  

 -18- 

 (3) if to the Company, to the Company to the attention of Larry D. Irick, General
Counsel, c/o Westar Energy, Inc., 818 South Kansas Avenue, Topeka, KS 66612 1203, with a copy to Davis Polk & Wardwell, 1600 El Camino Real, Menlo Park, CA 94025, Attention: Daniel G. Kelly, Jr. or at such other address as the Company shall
have specified to the holder of each Bond in writing. 
 Notices under this Section 12 will be deemed given only when actually received. 
 SECTION 13. REPRODUCTION OF DOCUMENTS. 
 This Agreement and all documents relating hereto, including, without limitation, (a) consents, waivers and modifications that may hereafter be executed, (b) documents received by any Purchaser at the Closing
(except the Bonds themselves) and (c) financial statements, certificates and other information previously or hereafter furnished to any holder of Bonds, may be reproduced by any Person who is a party to or recipient of any such document by any
photographic, photostatic, electronic, digital or other similar process and such Person may destroy any original document so reproduced. The Company and each Purchaser agree and stipulate that, to the extent permitted by applicable law, any such
reproduction shall be admissible in evidence as the original itself in any judicial or administrative proceeding (whether or not the original is in existence and whether or not such reproduction was made by such Person in the regular course of
business) and any enlargement, facsimile or further reproduction of such reproduction shall likewise be admissible in evidence. This Section 13 shall not prohibit the Company, any Purchaser or any other holder of Bonds from contesting any such
reproduction to the same extent that it could contest the original, or from introducing evidence to demonstrate the inaccuracy of any such reproduction. 
 SECTION 14. CONFIDENTIAL INFORMATION. 
 For the purposes of this Section 14,
“Confidential Information” means information delivered to any Purchaser by or on behalf of the Company in connection with the transactions contemplated by or otherwise pursuant to this Agreement that is proprietary in nature and
that was clearly marked or labeled or otherwise adequately identified when received by such Purchaser as being confidential information of the Company, provided that such term does not include information that (a) was publicly known or
otherwise known to such Purchaser prior to the time of such disclosure, (b) subsequently becomes publicly known through no act or omission by such Purchaser or any Person acting on such Purchaser’s behalf, (c) otherwise becomes known
to such Purchaser other than through disclosure by the Company or (d) constitutes financial statements delivered to such Purchaser that are otherwise publicly available. Each Purchaser agrees to maintain the confidentiality of such Confidential
Information in accordance with procedures adopted by such Purchaser in good faith to protect confidential information of third parties delivered to it, provided that such Purchaser may deliver or disclose Confidential Information to
(1) such Purchaser’s, directors, trustees, officers, employees, agents, attorneys and affiliates (to the extent such disclosure reasonably relates to the administration of the investment represented by such Purchaser’s Bonds),
(2) such Purchaser’s financial advisors and other professional advisors who agree to hold confidential the Confidential Information substantially in accordance with the terms of this Section 14, (3) any other holder of any Bond,
(4) any Institutional Investor to which such Purchaser sells or offers to sell such Bond 

  

 -19- 

 
or any part thereof or any participation therein (if such Person has agreed in writing prior to its receipt of such Confidential Information to be bound by
the provisions of this Section 14), (5) any federal or state regulatory authority having jurisdiction over such Purchaser, (6) the National Association of Insurance Commissioners or any similar organization, or any nationally
recognized rating agency that requires access to information about such Purchaser’s investment portfolio or (7) any other Person to which such delivery or disclosure may be necessary (i) to effect compliance with any law, rule,
regulation or order applicable to such Purchaser, (ii) in response to any subpoena or other legal process (provided that, subject to clause (iv) below, if not prohibited by applicable law, such Purchaser shall use commercially
reasonable efforts to give notice to the Company thereof prior to such disclosure), (iii) in connection with any litigation to which such Purchaser is a party (provided that, subject to clause (iv) below, if not prohibited by
applicable law, such Purchaser shall use commercially reasonable efforts to give notice to the Company thereof prior to such disclosure or (iv) if an Event of Default has occurred and is continuing, to the extent such Purchaser may reasonably
determine such delivery and disclosure to be necessary or appropriate in the enforcement or for the protection of the rights and remedies under its Bonds, this Agreement or any other Bond Document. Each holder of a Bond, by its acceptance of a Bond,
will be deemed to have agreed to be bound by and to be entitled to the benefits of this Section 14 as though it were a party to this Agreement. On reasonable request by the Company in connection with the delivery to any holder of a Bond of
information required to be delivered to such holder under this Agreement or requested by such holder (other than a holder that is a party to this Agreement or its nominee), such holder will enter into an agreement with the Company embodying the
provisions of this Section 14. 
 SECTION 15. MISCELLANEOUS. 
 Section 15.1. Successors and Assigns. All covenants and other agreements contained in this Agreement by or on behalf of any of the parties
hereto bind and inure to the benefit of their respective successors and assigns (including, without limitation, any subsequent holder of a Bond) whether so expressed or not. 
 Section 15.2. Severability. Any provision of this Agreement that is prohibited or unenforceable in any jurisdiction shall, as to such
jurisdiction, be ineffective to the extent of such prohibition or unenforceability without invalidating the remaining provisions hereof, and any such prohibition or unenforceability in any jurisdiction shall (to the full extent permitted by law) not
invalidate or render unenforceable such provision in any other jurisdiction. 
 Section 15.3. Construction. Each covenant
contained herein shall be construed (absent express provision to the contrary) as being independent of each other covenant contained herein, so that compliance with any one covenant shall not (absent such an express contrary provision) be deemed to
excuse compliance with any other covenant. Where any provision herein refers to action to be taken by any Person, or which such Person is prohibited from taking, such provision shall be applicable whether such action is taken directly or indirectly
by such Person. 
 Section 15.4. Counterparts. This Agreement may be executed in any number of counterparts, each of which shall
be an original but all of which together shall constitute one instrument. Each counterpart may consist of a number of copies hereof, each signed by less than all, but together signed by all, of the parties hereto. 
  

 -20- 

 Section 15.5. Governing Law. This Agreement shall be construed and enforced in accordance
with, and the rights of the parties shall be governed by, the law of the State of New York excluding choice-of-law principles of the law of such State that would permit the application of the laws of a jurisdiction other than such State. 

 

 -21- 

 The execution hereof by the Purchasers shall constitute a contract among and us for the uses and purposes
hereinabove set forth. 
  

			
	 Very truly yours,

	
	 KANSAS GAS AND ELECTRIC COMPANY

		
	 By:
	 	 /s/ Mark A. Ruelle

	 Name:
	 	Mark A. Ruelle
	 Title:
	 	Vice President and Treasurer

  

 -22- 

 This Agreement is hereby accepted and agreed to as of the date hereof. 
  

			
	JOHN HANCOCK LIFE INSURANCE COMPANY
		
	 By:
	 	 /s/ John C.S. Anderson 

	 Name:
	 	John C.S. Anderson 
	 Title:
	 	Senior Managing Director 
	
	 JOHN HANCOCK LIFE INSURANCE COMPANY
     (U.S.A.)

		
	 By:
	 	 /s/ John C.S. Anderson 

	 Name:
	 	John C.S. Anderson 
	 Title:
	 	Managing Director 

  

 -23- 

 This Agreement is hereby accepted and agreed to as of the date hereof. 
  

			
	METROPOLITAN LIFE INSURANCE COMPANY
	
	 METLIFE INVESTORS USA INSURANCE COMPANY, by
Metropolitan Life Insurance Company, its Investment Manager

	
	 METLIFE INSURANCE COMPANY OF
CONNECTICUT, by Metropolitan Life Insurance Company, its Investment Manager

		
	 By:
	 	 /s/ John A. Willis  

	 Name:
	 	John A. Willis    
	 Title:
	 	Director  

  
  

 -24- 

 This Agreement is hereby accepted and agreed to as of the date hereof. 
  

			
	 UNUM LIFE INSURANCE COMPANY OF
AMERICA

	 By:
	 	 Provident Investment Management, LLC

	 Its:
	 	 Agent

		
	 By:
	 	 /s/ Ben Vance

	 Name:
	 	Ben Vance
	 Title:
	 	Vice President

  

 -25- 

 This Agreement is hereby accepted and agreed to as of the date hereof. 
  

			
	THRIVENT FINANCIAL FOR LUTHERANS
		
	 By:
	 	 /s/ Alan D. Onstad

	 Name:
	 	Alan D. Onstad
	 Title:
	 	Senior Director

  

 -26- 

 This Agreement is hereby accepted and agreed to as of the date hereof. 
  

			
	MONY LIFE INSURANCE COMPANY
		
	 By:
	 	 /s/ Amy Judd

	 Name:
	 	Amy Judd
	 Title:
	 	Investment Officer
	
	AXA EQUITABLE LIFE INSURANCE COMPANY
		
	 By:
	 	 /s/ Amy Judd

	 Name:
	 	Amy Judd
	 Title:
	 	Investment Officer

  

 -27- 

 This Agreement is hereby accepted and agreed to as of the date hereof. 
  

			
	AMERICAN INVESTORS LIFE INSURANCE COMPANY
	 By:
	 	 Aviva Capital Management, Inc.,

		 	 its authorized attorney-in-fact

		
	 By:
	 	 /s/ Roger D. Fors

	 Name:
	 	Roger D. Fors
	 Title:
	 	VP – Private Placements

  

 -28- 

 This Agreement is hereby accepted and agreed to as of the date hereof. 
  

			
	COBANK, ACB
		
	 By:
	 	 /s/ Brent R. Knight

	 Name:
	 	Brent R. Knight
	 Title:
	 	Vice President

  

 -29- 

 This Agreement is hereby accepted and agreed to as of the date hereof. 
  

			
	MUTUAL OF OMAHA INSURANCE COMPANY
		
	 By:
	 	 /s/ Curtis R. Caldwell

	 Name:
	 	Curtis R. Caldwell
	 Title:
	 	Senior Vice President

  

 -30- 

 This Agreement is hereby accepted and agreed to as of the date hereof. 
  

			
	PRINCIPAL LIFE INSURANCE COMPANY
		
	 By:
	 	 Principal Global Investors, LLC,
 a Delaware limited
liability company,
 its authorized signatory

		
	 By:
	 	 /s/ James C. Fifield  

	 Its:
	 	Assistant General Counsel  
		
	 By:
	 	 /s/ Christopher J. Henderson

	 Its:
	 	Vice President and Associate General Counsel

  
  

 -31- 

 This Agreement is hereby accepted and agreed to as of the date hereof. 
  

			
	 GREAT-WEST LIFE & ANNUITY INSURANCE
COMPANY

		
	 By:
	 	 /s/ James G. Lowery  

	 Name:
	 	James G. Lowery  
	 Title:
	 	Assistant Vice President Investments  
		
	 By:
	 	 /s/ Eve Hampton  

	 Name:
	 	Eve Hampton  
	 Title:
	 	Vice President Investments

  

 -32- 

 This Agreement is hereby accepted and agreed to as of the date hereof. 
  

			
	COTTON STATES LIFE INSURANCE
		
	 By:
	 	 /s/ John Jacobs

	 Name:
	 	John Jacobs
	 Title:
	 	Director – Fixed Income
	
	COUNTRY LIFE INSURANCE COMPANY
		
	 By:
	 	 /s/ John Jacobs

	 Name:
	 	John Jacobs
	 Title:
	 	Director – Fixed Income

  

 -33- 

 This Agreement is hereby accepted and agreed to as of the date hereof. 
  

			
	THE STATE LIFE INSURANCE COMPANY
		
	 By:
	 	 American United Life Insurance Company,

		 	 its agent

		
	 By:
	 	 /s/ Kent R. Adams

	 Name:
	 	Kent R. Adams
	 Title:
	 	V.P. Fixed Income Securities

  

 -34- 

 INFORMATION RELATING TO PURCHASERS 

  

 SCHEDULE A 
 (to Bond Purchase Agreement) 

 DEFINED TERMS 
 As used herein, the following terms have the respective meanings set forth below or set forth in the Section hereof following such term: 
 “Affiliate” shall mean, at any time, and with respect to any Person, (a) any other Person that at such time directly or indirectly
through one or more intermediaries Controls, or is Controlled by, or is under common Control with, such first Person, and (b) any Person beneficially owning or holding, directly or indirectly, 10% or more of any class of voting or equity
interests of such first Person or any entity of which such first Person beneficially owns or holds, in the aggregate, directly or indirectly, 10% or more of any class of voting or equity interests. As used in this definition, “Control”
means the possession, directly or indirectly, of the power to direct or cause the direction of the management and policies of a Person, whether through the ownership of voting securities, by contract or otherwise. Unless the context otherwise
clearly requires, any reference to an “Affiliate” is a reference to an Affiliate of the Company. 
 “Amended
Indenture” is defined in Section 2.2. 
 “Bond Documents” shall mean this Agreement, the Bonds, the
Supplemental Indenture, the Indenture, the Security Documents and all other instruments, certificates, documents and other writings now or hereafter executed and delivered by the Company pursuant to or in connection with any of the foregoing.

 “Bonds” is defined in Section 1.1. 
 “Business Day” shall mean any day other than a Saturday, a Sunday or a day on which commercial banks in Topeka, Kansas or New York, New York are required or authorized to be closed. 
 “Capitalized Lease” shall mean, at any time, a lease with respect to which the lessee is required concurrently to recognize the
acquisition of an asset and the incurrence of a liability in accordance with GAAP. 
 “Closing” is defined in
Section 3. 
 “Code” shall mean the Internal Revenue Code of 1986, as amended from time to time, and the rules and
regulations promulgated thereunder from time to time. 
 “Company” shall mean Kansas Gas and Electric Company, an Kansas
corporation. 
 “Confidential Information” is defined in Section 14. 
 “Default” shall mean an event or condition the occurrence or existence of which would, with the lapse of time or the giving of notice or
both, become an Event of Default. 
  

 SCHEDULE B 
 (to Bond Purchase Agreement) 

 “Disclosure Documents” is defined in Section 5.3. 
 “Electronic Delivery” is defined in Section 7.1(a). 
 “Employee Plan” shall mean any “employee benefit plan,” as defined in Section 3(3) of ERISA, any employment, severance or similar contract, plan arrangement or policy or any other plan
or arrangement (written or oral) providing for compensation, bonuses, profit-sharing, stock option or other stock related rights or other forms of incentive or deferred compensation, vacation benefits, insurance (including any self-insured
arrangements), health or medical benefits, employee assistance program, disability or sick leave benefits, workers’ compensation, supplemental unemployment benefits, severance benefits or post-employment or retirement benefits (including
compensation, pension, health, medical or life insurance benefits) which is maintained, administered or contributed to by the Company and covers any employee or former employee of the Company. 
 “Enforceability Limitations” is defined in Section 5.2. 
 “Environmental Laws” is defined in Section 5.18. 
 “ERISA” shall mean the Employee Retirement Income Security Act of 1974, as amended from time to time, and the rules and regulations promulgated thereunder from time to time in effect. 
 “ERISA Affiliate” shall mean any trade or business (whether or not incorporated) that is treated as a single employer together with the
Company under Section 414 of the Code. 
 “Event of Default” shall mean the occurrence of any one or more of the
following: (a) any breach of the terms hereof by the Company, (b) any “Default” (if any) set forth in the Supplemental Indenture or (c) any “Default” as such term is defined in the Indenture. 
 “Exchange Act” shall mean the Securities Exchange Act of 1934, as amended from time to time, and the rules and regulations promulgated
thereunder from time to time in effect. 
 “GAAP” shall mean generally accepted accounting principles as in effect from time
to time in the United States of America. 
 “Guarantee” shall mean, with respect to any Person, any obligation (except the
endorsement in the ordinary course of business of negotiable instruments for deposit or collection) of such Person guaranteeing or in effect guaranteeing any Indebtedness, dividend or other obligation of any other Person in any manner, whether
directly or indirectly, including, without limitation, obligations incurred through an agreement, contingent or otherwise, by such Person: 
 (a) to purchase such Indebtedness or obligation or any property constituting security therefor; 
 (b) to advance or supply funds (1) for the purchase or payment of such Indebtedness or obligation, or (2) to maintain any working capital or other balance sheet condition or any income statement condition of any other Person or
otherwise to advance or make available funds for the purchase or payment of such Indebtedness or obligation; 
  

 A-2 

 (c) to lease properties or to purchase properties or services primarily for the purpose
of assuring the owner of such Indebtedness or obligation of the ability of any other Person to make payment of the Indebtedness or obligation; or 
 (d) otherwise to assure the owner of such Indebtedness or obligation against loss in respect thereof. 
 In
any computation of the Indebtedness or other liabilities of the obligor under any Guarantee, the Indebtedness or other obligations that are the subject of such Guarantee shall be assumed to be direct obligations of such obligor. 
 “Holder” shall mean a “bondholder” as such term is used in the Indenture. 
 “Indebtedness” with respect to any Person shall mean, at any time, without duplication, 
 (a) its liabilities for borrowed money and its redemption obligations in respect of mandatorily redeemable preferred stock; 
 (b) its liabilities for the deferred purchase price of property acquired by such Person (excluding accounts payable arising in the
ordinary course of business but including all liabilities created or arising under any conditional sale or other title retention agreement with respect to any such property); 
 (c) all liabilities appearing on its balance sheet in accordance with GAAP in respect of Capitalized Leases; 
 (d) all liabilities for borrowed money secured by any Lien with respect to any property owned by such Person (whether or not it has
assumed or otherwise become liable for such liabilities), excluding, however, any Lien with respect to property owned by another with respect to which property such Person possesses only a leasehold interest or an easement, right-of-way, license,
permit or other similar right of occupancy or use; 
 (e) all its liabilities in respect of letters of credit or instruments
serving a similar function issued or accepted for its account by banks and other financial institutions (whether or not representing obligations for borrowed money); and 
 (f) any Guarantee of such Person with respect to liabilities of a type described in clauses (a) through (e) hereof. 

“Indenture” is defined in Section 2.2. 
 “INHAM Exemption” is defined in Section 6.4(e). 
 “Institutional
Investor” shall mean (a) any Purchaser of a Bond, (b) any holder of a Bond holding (together with one or more of its affiliates) more than $15,000,000 in aggregate principal 

  

 A-3 

 
amount of the Bonds then outstanding, (c) any bank, trust company, savings and loan association or other financial institution, any pension plan, any
investment company, any insurance company, any broker or dealer, or any other similar financial institution or entity, regardless of legal form and (d) any Related Fund of any holder of any Bond referred to in clause (a), (b) or
(c) above. 
 “KCC” shall mean the Kansas Corporation Commission. 
 “Lien” shall mean, with respect to any Person, any mortgage, lien, pledge, charge, security interest or other encumbrance, or any
interest or title of any vendor, lessor, lender or other secured party to or of such Person under any conditional sale or other title retention agreement or Capitalized Lease, upon or with respect to any property or asset of such Person (including
in the case of stock, stockholder agreements, voting trust agreements and all similar arrangements). 
 “Material Adverse
Effect” is defined in Section 5.1. 
 “Memorandum” is defined in Section 5.3. 
 “Mortgaged and Pledged Property” shall have the meaning given to such term in the Indenture. 
 “Multiemployer Plan” shall mean any Plan that is a “multiemployer plan” (as such term is defined in Section 4001(a)(3) of
ERISA). 
 “NAIC Annual Statement” is defined in Section 6.4(a). 
 “Officer’s Certificate” shall mean a certificate of a Senior Financial Officer or of any other officer of the Company whose
responsibilities extend to the subject matter of such certificate. 
 “Person” shall mean an individual, partnership,
corporation, limited liability company, association, trust, unincorporated organization, or a government or agency or political subdivision thereof. 
 “property” or “properties” shall mean, unless otherwise specifically limited, real or personal property of any kind, tangible or intangible, choate or inchoate. 
 “PTE” is defined in Section 6.4(a). 
 “Purchaser” is defined in the first paragraph of this Agreement. 
 “QIB”
shall mean a qualified institutional investor (as that term is defined under Rule 144A promulgated under the Securities Act). 
 “QPAM Exemption” is defined in Section 6.4(d). 
  

 A-4 

 “Related Fund” shall mean, with respect to any holder of any Bond, any fund or entity
that (i) invests in Securities or bank loans, and (ii) is advised or managed by such holder, the same investment advisor as such holder or by an affiliate of such holder or such investment advisor. 
 “Required Holders” shall mean, at any time, the holders of more than 50% in principal amount of the Bonds at the time outstanding
(exclusive of Bonds then owned by the Company or any of its Affiliates). 
 “Responsible Officer” shall mean any Senior
Financial Officer and any other officer of the Company with responsibility for the administration of the relevant portion of this Agreement. 
 “SEC” shall mean the Securities and Exchange Commission of the United States, or any successor thereto. 
 “Securities” or “Security” shall have the meaning specified in Section 2(1) of the Securities Act. 
 “Securities Act” shall mean the Securities Act of 1933, as amended from time to time, and the rules and regulations promulgated thereunder from time to time in effect. 
 “Security Documents” shall mean, collectively, any and all security documents and all financing statements, assignments, pledges, Lien
entry forms, notices, documents and other writings executed and delivered from time to time in favor of the Trustees, for the equal and ratable benefit of the Holders in order to secure the obligations of the Company under and in respect of
outstanding Bonds and any and all amendments, supplements and other modifications thereto. 
 “Senior Financial Officer”
shall mean the chief financial officer, principal accounting officer, treasurer or controller of the Company. 
 “Series A
Bonds” is defined in Section 1.1. 
 “Series B Bonds” is defined in Section 1.1. 
 “Source” is defined in Section 6.4. 
 “Subsidiary” shall mean, as to any Person, any corporation, association or other business entity in which such Person or one or more of its Subsidiaries or such Person and one or more of its
Subsidiaries owns sufficient equity or voting interests to enable it or them (as a group) ordinarily, in the absence of contingencies, to elect a majority of the directors (or Persons performing similar functions) of such entity, and any partnership
or joint venture if an interest of more than 50% in the profits or capital thereof is owned by such Person or one or more of its Subsidiaries or such Person and one or more of its Subsidiaries (unless such partnership or joint venture can and does
ordinarily take major business actions without the prior approval of such Person or one or more of its Subsidiaries). Unless the context otherwise clearly requires, any reference to a “Subsidiary” is a reference to a Subsidiary of the
Company. 
  

 A-5 

 “Supplemental Indenture” is defined in Section 2.2. 
 “Westar Energy” shall mean Westar Energy, Inc., a Kansas corporation. 
  

 A-6 

 FINANCIAL STATEMENTS 
 1. Financial Statements of the Company for the Years Ended December 31, 2007, 2006 and 2005. 
  

 SCHEDULE 5.5 
 (to Bond Purchase Agreement) 

 GOVERNMENTAL AUTHORIZATIONS 
 1. Order Granting Application issued by the Kansas Corporation Commission and dated March 24, 2008 in Docket No. 08-KG&E-829-SEC.

  

 SCHEDULE 5.7 
 (to Bond Purchase Agreement) 

 LITIGATION 
 Under Section 114(a) of the Clean Air Act (Section 114), the EPA is conducting investigations nationwide to determine whether modifications at coal-fired power plants are subject to the New Source Review
permitting program or New Source Performance Standards. These investigations focus on whether projects at coal-fired plants were routine maintenance or whether the projects were substantial modifications that could reasonably have been expected to
result in a significant net increase in emissions. The New Source Review program requires companies to obtain permits and, if necessary, install control equipment to address emissions when making a major modification or a change in operation if
either is expected to cause a significant net increase in emissions. 
 The EPA requested information from Westar Energy under
Section 114 regarding projects and maintenance activities that have been conducted since 1980 at three coal-fired plants operated by the companies. On January 22, 2004, the EPA notified Westar Energy that certain projects completed at
Jeffrey Energy Center violated certain permitting requirements of the New Source Review program. 
 Westar Energy has been in discussions
with the EPA and the Department of Justice (DOJ) concerning this matter in an attempt to reach a settlement. The Company expects that any settlement could require Westar Energy and the Company to update or install emissions controls at Jeffrey
Energy Center. Additionally, the companies might be required to update or install emissions controls at their other coal-fired plants, pay fines or penalties, or take other remedial action. If settlement discussions fail, the DOJ may consider
whether to pursue an enforcement action against Westar Energy and the Company in Federal district court. The Company’s ultimate costs to resolve the NSR Investigation could be material. The Company believes that costs related to updating or
installing emissions controls would qualify for recovery through the ECRR. If, however, a penalty is assessed against the Company, its share of the penalty could be material and may not be recovered in rates. The Company is not able to estimate the
possible loss or range of loss at this time. 
  

 SCHEDULE 5.8 
 (to Bond Purchase Agreement) 

 EXISTING INDEBTEDNESS 
 A. Outstanding Company bonds as of March 31, 2008 
  

											
	 Description
	  	Amount
Outstanding	  	Date of
Offering	  	Date of
Maturity	  	Interest
Rate	 
	First Mortgage Bonds	  			  		  		  		
					
	 6.53% Series due 2037
	  	$	175,000,000	  	08/14/2007	  	12/15/2037	  	6.53	%
					
	 Pollution Control Bonds
	  			  		  		  		
					
	 MATES Series due 2027
	  	$	21,940,000	  	04/28/1994	  	04/15/2027	  	5.530	%
	 5.3% Series due 2031
	  	$	108,600,000	  	06/10/2004	  	06/01/2031	  	5.300	%
	 5.3% Series due 2031
	  	$	18,900,000	  	06/10/2004	  	06/01/2031	  	5.300	%
	 4.85% Series due 2031
	  	$	50,000,000	  	06/10/2006	  	06/01/2031	  	4.850	%
	 Variable Rate Series due 2031
	  	$	50,000,000	  	06/10/2006	  	06/01/2031	  	4.730	%
	 Variable Rate Series due 2031
	  	$	100,000,000	  	06/10/2004	  	06/01/2031	  	4.932	%
	 MATES Series due 2032
	  	$	14,500,000	  	04/28/1994	  	04/15/2032	  	5.530	%
	 MATES Series due 2032
	  	$	10,000,000	  	04/28/1994	  	04/15/2032	  	5.530	%
	 5.10% Series due 2023
	  	$	13,462,500	  	03/01/1994	  	03/01/2023	  	5.100	%
					
	 Revolver Guarantee Bonds
	  			  		  		  		
	 JPMorgan Chase Revolver—Collateral Bonds (1) (2)
	  	$	750,000,000	  	02/22/2008	  	03/17/2012	  	5.570	%

  

	(1)	Bonds issued pursuant to a certain Collateral and Guarantee Agreement dated February 22, 2008, by and among the Company, Westar Energy and the Collateral Agents thereto, in
connection with that certain Third Amended and Restated Credit Agreement dated February 22, 2008, by and among Westar Energy (as Borrower), the several Lenders thereto, JPMorgan Chase Bank, N.A. (as Administrative Agent), Citibank, N.A. (as
Syndicate Agent), and The Bank of New York, Union Bank of California, N.A. and Wachovia Bank, National Association (as Documentation Agents). 

	(2)	Of the $750 million in lender commitments secured by KGE bonds, $730 million will mature on March 17, 2012. The remaining $20 million of the commitments will mature on
March 17, 2011. 

  

 SCHEDULE 5.15(a) 
 (to Bond Purchase Agreement) 

 FUTURE LIENS 
 None. 
  

 SCHEDULE 5.15(b) 
 (to Bond Purchase Agreement) 

 AMENDMENTS TO INDENTURE 
  

			
	 Designation
	  	 Dated as of

	 First Supplemental Indenture
	  	June 1, 1942
	 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
	 Thirteenth Supplemental Indenture
	  	May 31, 1973
	 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

  

 SCHEDULE 5.15(c) 
 (to Bond Purchase Agreement) 

			
	 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
	 Forty-eighth Supplemental Indenture
	  	July 13, 2007
	 Forty-ninth Supplemental Indenture
	  	October 12, 2007
	 Fiftieth Supplemental Indenture
	  	February 22, 2008

  

 5.15(c)-2 

 FORM OF SUPPLEMENTAL INDENTURE 
 SEE ATTACHED 
  

 EXHIBIT A 
 (to Bond Purchase Agreement) 

 FORM OF OPINION OF GENERAL
COUNSEL OF THE COMPANY 
 The closing opinion of Larry D. Irick, Esq., Vice
President, General Counsel and Corporate Secretary of Westar Energy, which is called for by Section 4.4(a) of the Agreement, shall be dated the date of the Closing and addressed to the Purchasers and shall be to the effect that: 
 I am the General Counsel of Westar Energy and Secretary of the Company, and, in this regard, I have acted as counsel for the Company in connection with
the issuance by the Company pursuant to the Agreement of $150,000,000 aggregate principal amount of Bonds. I am delivering this opinion pursuant to Section 4.4(a) of the Agreement. 
 I have (or an attorney in the Office of the Law Department of Westar Energy has) examined the originals, or copies certified or otherwise identified to
our satisfaction, of such corporate records of the Company, certificates of public officials and of officers of the Company, and agreements, instruments and other documents, as I have deemed necessary as a basis for the opinions expressed below. As
to questions of fact material to such opinions, I have, when relevant facts were not independently established by me, relied upon certificates of public officials or officers of the Company. 
 With your permission and without independent investigation, I have assumed the following: (i) the genuineness of all signatures (other than the
signatures of the officers of the Company) on all documents examined by me; (ii) the authenticity of all documents submitted to me as originals and the conformity to authentic originals of all documents submitted to me as certified or
photostatic copies; (iii) any certifications and documents dated prior to the date hereof remain true as of the date hereof; (iv) each certificate of a public official is accurate, complete and authentic and all official public records are
accurate and complete and (v) the legal capacity of all natural persons. 
 Based upon the foregoing and upon such investigation as I
have deemed necessary, I am of the opinion that: 
 (a) the Company has been duly incorporated, is validly existing as a corporation in good
standing under the laws of the State of Kansas and is duly qualified to transact business and is in good standing in each jurisdiction in which the conduct of its business or its ownership or leasing of property requires such qualification (except
where the failure to so qualify would not have a material adverse effect upon the business or financial condition of the Company, as a whole); 
 (b) the Amended Indenture has been duly authorized, executed and delivered by the Company; 
 (c) assuming the due authorization,
execution and delivery by the other parties thereto, the Amended Indenture constitutes a valid and binding agreement of the Company, enforceable against the Company in accordance with its terms (subject, as to enforcement of remedies, to applicable
bankruptcy, reorganization, insolvency, fraudulent transfer, moratorium or other similar laws affecting creditors’ rights generally from time to time in effect and to general equity principles); 
  

 EXHIBIT 4.4(a) 
 (to Bond Purchase Agreement) 

 (d) the Amended Indenture has been duly recorded and filed in each place in which such recording or
filing is required to protect and preserve the lien of the Amended Indenture, and all taxes and recording or filing fees required to be paid in connection with the execution, recording or filing of the Amended Indenture have been duly paid;

 (e) the Company has good and sufficient title to, or a satisfactory easement in, all the real property, and has good and sufficient title
to all the personal property described in the Amended Indenture as owned by it and subject to the lien of the Amended Indenture, except any which may have been released from the lien thereof pursuant to the provisions thereof, subject only to
(1) minor leases and liens of judgments not prior to the lien of the Amended Indenture, which, in my opinion, do not interfere with the Company’s business, (2) minor defects, irregularities and deficiencies in titles of properties and
rights-of-way which, in my opinion, do not materially impair the use of such property and rights-of-way for the purposes for which they are held by the Company and (3) other excepted encumbrances as defined in the Amended Indenture; subject to
the qualifications set forth in this opinion, the Amended Indenture constitutes a valid, direct first mortgage lien upon said properties and upon all franchises owned by the Company, which properties and franchises include all the physical
properties and franchises of the Company (other than classes of property expressly excepted in the Amended Indenture); all physical properties and franchises (other than classes of property expressly excepted in the Amended Indenture as aforesaid)
thereafter acquired by the Company will, upon such acquisition, become subject to the lien thereof, subject, however, to liens permitted thereby and to any liens existing or placed upon such properties at the time of the acquisition thereof by the
Company; and the descriptions of all such properties and assets contained in the granting clauses of the Amended Indenture are correct and adequate for the purposes of the Amended Indenture; 
 (f) the Bonds have been duly authorized, executed, and delivered by the Company; 
 (g) when the Bonds have been duly executed and authenticated in accordance with the provisions of the Amended Indenture, the Bonds will be valid and
binding obligations of the Company, enforceable against it in accordance with their terms (subject, as to enforcement or remedies, to applicable bankruptcy, reorganization, insolvency, fraudulent transfer, moratorium or other similar laws affecting
creditors’ rights generally from time to time in effect and to general equity principles), and will be entitled to the benefits of the Amended Indenture and to the lien of the Amended Indenture; 
 (h) the Agreement has been duly authorized, executed and delivered by the Company, and, assuming the due authorization, execution and delivery by the
other party thereto, constitutes a valid and binding agreement of the Company, enforceable against the Company in accordance with its terms (subject, as to enforcement of remedies, to applicable bankruptcy, reorganization, insolvency, fraudulent
transfer, moratorium or other similar laws affecting creditors’ rights generally from time to time in effect and to general equity principles); 
  

 E-4.4(a)-2 

 (i) the execution and delivery by the Company of, and the performance by the Company of its obligations
under, the Agreement, the Amended Indenture and the Bonds, will not contravene (x) any provision of law of the United States (including laws relating specifically to electric utility companies and the electric utility industry), Kansas, or, to
the best of my knowledge, of any other state or jurisdiction of the United States that in my experience is normally applicable to general business corporations of the same type as the Company in relation to transactions of the type contemplated by
the Agreement, the Amended Indenture and the Bonds, (y) the articles of incorporation or by-laws of the Company or (z) to the best of my knowledge, any material agreement or other material instrument binding upon the Company; 

(j) the Company possesses valid franchises, certificates of convenience and authority, licenses and permits authorizing it to carry on the electric
utility business in which it is engaged, except in the cases that the failure to possess such franchises, certificates, licenses or permits, individually or in the aggregate, would not be reasonably expected to have a material adverse effect on the
Company, taken as a whole, and the Company has not received any notice of proceedings relating to the revocation or modification of any such franchise, certificate of convenience and authority, license or permit which, singly or in the aggregate, if
the subject of an unfavorable decision, ruling or finding, would reasonably be expected to have a material adverse effect; 
 (k) there is no
pending, or to my knowledge, threatened action, suit or proceeding by or before any court or governmental agency, authority or body or any arbitrator involving the Company or its property that is not disclosed in Westar Energy’s Annual Report
in Form 10-K for the year ended December 31, 2007, except in each case for proceedings that, if the subject of an unfavorable decision, ruling or finding could not reasonably be expected to have a material adverse effect upon the business or
financial condition of the Company, as a whole; and 
 (l) The State Corporation Commission of the State of Kansas (“KCC”)
has authorized the issuance of the Bonds pursuant to an order dated March 24, 2008. No additional consent, approval, authorization, filing with or order of (a) the Federal Energy Regulatory Commission (“FERC”) under the
Federal Power Act, (b) the KCC or (c) to my knowledge, any court or governmental agency or body is required in connection with the transactions contemplated herein. 
 This opinion is limited to the matters specifically stated in this letter, and no further opinion is to be implied or may be inferred beyond the opinions
specifically stated herein. My opinions are limited to the laws of the State of Kansas (except state securities or blue sky laws), the Federal Power Act and laws, rules or regulations promulgated by or within the enforcement authority of FERC, and I
do not express any opinion herein concerning any other law. This opinion is based solely on the state of the law as of the date of this opinion. I specifically disclaim any obligation to monitor any of the matters stated in this opinion or to advise
the persons entitled to rely on this opinion of any change in law or fact after the date of this opinion that might affect any of the opinions stated herein. This opinion is rendered solely for the benefit of, and may be relied on by you and may not
be released to or relied upon by any other person or for any other purpose, except that your successors and each future holder of the any Bond under (and permitted by) the Agreement may rely on this opinion as of the original date of this opinion

  

 E-4.4(a)-3 

 
subject to the limitations, qualifications, exceptions and assumptions set forth herein and this opinion may be provided to, but not relied upon by,
governmental authorities (including the National Association of Insurance Commissioners). 
  

 E-4.4(a)-4 

 FORM OF OPINION OF SPECIAL
COUNSEL FOR THE COMPANY 
 The closing opinion of Davis Polk & Wardwell,
special counsel for the Company, which is called for by Section 4.4(b) of the Agreement, shall be dated the date of the Closing and addressed to the Purchasers shall be to the effect that: 
 We have acted as special counsel for Kansas Gas and Electric Company, a Kansas Corporation (the “Company”), in connection with the
issuance by the Company pursuant to the Bond Purchase Agreement dated as of May 15, 2008 (the “Agreement”) between the Company and the Purchasers of $150,000,000 aggregate principal amount of First Mortgage Bonds consisting of
(a) $50,000,000 aggregate principal amount of First Mortgage Bonds, 6.15% Series A Due May 15, 2023 (the “Series A Bonds”) and (b) $100,000,000 aggregate principal amount of First Mortgage Bonds, 6.64% Series B Due
May 15, 2038 (the “Series B Bonds”; the Series A Bonds and the Series B Bonds are collectively referred to herein as the “Bonds”). We are issuing this opinion pursuant to Section 4.4(b) of the Agreement.
Capitalized terms used herein but not otherwise defined herein are used as defined in Agreement. 
 We have examined originals or copies,
certified or otherwise identified to our satisfaction, of such documents, corporate records, certificates of public officials and officers of the Company and other instruments as we have deemed necessary or advisable for the purposes of rendering
this opinion. For purposes of opinion (a) below, we have assumed that the Agreement has been duly authorized, executed and delivered by the Company. 
 Based on the foregoing, we are of the opinion that: 
 (a) The Company is not, and after giving effect to the
offering and sale of the Bonds and the application of the proceeds thereof as described in the Agreement will not be, required to register as an “investment company” as such term is defined in the Investment Company Act of 1940, as
amended; 
 (b) The Agreement constitutes the legal, valid and binding agreement of the Company enforceable against the Company in accordance
with its terms except that the enforcement thereof may be subject to (1) bankruptcy, insolvency, reorganization, fraudulent conveyance, moratorium or other similar laws now or hereafter in effect relating to or affecting creditors’ rights
or remedies generally, (2) concepts of reasonableness and equitable principles of general applicability and (3) the remedy of specific performance and injunctive and other forms of equitable relief may be subject to equitable defenses and
to the discretion of the court before which any proceedings therefor may be brought (regardless of whether enforcement is sought in a proceeding at law or in equity); 
 (c) The execution and delivery by the Company of, and the performance by the Company of its obligations under the Agreement, the Amended Indenture and the Bonds (collectively, the “Documents”) will
not contravene any provision of the laws of the State of New York or any federal law of the United States of America (except with respect to laws relating specifically to public utility companies or the utilities industry, as to which we express no
opinion) that in our experience is normally applicable to general business corporations of the same type as the Company in relation to transactions of the type contemplated by the Documents, provided, that, except as set forth in paragraph
(e) below, we express no opinion as to federal or state securities laws; 
  

 EXHIBIT 4.4(b) 
 (to Bond Purchase Agreement) 

 (d) No consent, approval, authorization, or order of, or qualification with, any state or federal
governmental body or agency under the laws of the State of New York or any federal law of the United States of America (except with respect to consents, approvals and authorizations relating specifically to public utility companies or the utilities
industry, as to which we are not called upon to express any opinion) that in our experience is normally applicable to general business corporations of the same type as the Company in relation to transactions of the type contemplated by the Documents
is required for the execution, delivery and performance by the Company of its obligations under the Documents, except such as may be required under federal or state securities or Blue Sky laws as to which we express no opinion except as set forth in
paragraph (e) below; and 
 (e) Based upon the representations, warranties and agreements of the Company and you in the Agreement, it is
not necessary in connection with the offer, sale and delivery of the Bonds to you under the Agreement to register the Bonds under the Securities Act of 1933, as amended, or to qualify the Amended Indenture under the Trust Indenture Act of 1939, as
amended, it being understood that no opinion is expressed as to any subsequent offer or resale of any Bonds. 
 We are members of the Bars of
the States of New York and California and the foregoing opinion is limited to the laws of the State of New York and the federal laws of the United States of America (except with respect to such laws relating specifically to public utility companies
or the utilities industry). 
 This opinion is rendered solely to you in connection with the above matter. This opinion may not be relied
upon by you for any other purpose or relied upon by or furnished to any other person without our prior written consent, except that your successors and each future holder of the any Bond under (and permitted by) the Agreement may rely on this
opinion as of the original date of this opinion in connection with the above matter and subject to the limitations, qualifications, exceptions and assumptions set forth herein and this opinion may be furnished to, but not relied upon by,
governmental authorities (including the National Association of Insurance Commissioners). 
  

 E-4.4(b)-2 

 FORM OF OPINION OF SPECIAL
COUNSEL TO THE PURCHASERS OF THE BONDS 
 The closing opinion of Schiff Hardin LLP, special counsel to the purchasers of the Bonds, called for by Section 4.4(c) of the Agreement, shall be dated the date of the Closing and addressed to the Purchasers, shall be satisfactory in
form and substance to the purchasers of the Bonds and shall be to the effect that: 
 1. The Company is a corporation validly
existing and in good standing under the laws of the State of Kansas. 
 2. The issuance, sale and delivery of the Bonds being
delivered on the date of the Closing under the circumstances contemplated by this Agreement and the Supplemental Indenture do not, under existing law, require the registration of such Bonds under the Securities Act of 1933, as amended, or the
qualification of the Amended Indenture under the Trust Indenture Act of 1939, as amended. 
 The opinion of Schiff Hardin LLP shall also
state that the opinions of Larry D. Irick, Esq. and Davis Polk & Wardwell are satisfactory in scope and form to Schiff Hardin LLP and that, in their opinion, the Purchasers are justified in relying thereon. 
 In rendering the opinion set forth in paragraph 1 above, Schiff Hardin LLP may rely, as to matters referred to in paragraph 1, solely upon an examination
of the Certificate of Incorporation certified by, and a certificate of good standing of the Company from, the Secretary of State of the State of Kansas. The opinion of Schiff Hardin LLP is limited to the laws of the State of New York and the Federal
laws of the United States. 
 With respect to matters of fact upon which such opinion is based, Schiff Hardin LLP may rely on appropriate
certificates of public officials and officers of the Company and upon representations of the Company and the purchasers of the Bonds delivered in connection with the issuance and sale of the Bonds. 
  

 EXHIBIT 4.4(c) 
 (to Bond Purchase Agreement)Fifty-First Supplemental Indenture

 Exhibit 4.2 
  
  
 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 
 FIFTY-FIRST SUPPLEMENTAL
INDENTURE 
 Providing, among other things, for 
 First Mortgage Bonds, 6.15% Series A due May 15, 2023 
 First Mortgage Bonds, 6.64% Series B due
May 15, 2038 
 Dated as of May 15, 2008 
  
  

 FIFTY-FIRST SUPPLEMENTAL INDENTURE 
 INDENTURE, dated as of May 15, 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 “Fifty-first 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
	Forth-ninth Supplemental Indenture	  	October 12, 2007
	Fiftieth Supplemental Indenture	  	February 22, 2008

  

 -4- 

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

  

 -7- 

 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-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. 

  

 -8- 

 
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 
 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 

  

 -9- 

 
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 
 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 

  

 -10- 

 
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

 WHEREAS, the Company-Kansas caused the Fiftieth 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 22, 2008, Film and Page 28953801), and as a security agreement in the office of Secretary of State of Kansas (filed on February 25, 2008, and indexed as
No. 6458236), but paid no mortgage registration tax in connection with the recordation of the Fiftieth Supplemental Indenture, no such tax having been payable in connection with such recordation; and 
 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 Fiftieth 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

  

 -11- 

					
	 Series
	  	Principal
Amount
Issued	  	Principal
Amount
Outstanding
	 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
	 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
	 5.57% Series due 2012
	  	750,000,000	  	750,000,000

  

 -12- 

 hereinafter sometimes called Bonds of the First through Fifty-fifth 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 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 two new series of bonds; and 
 WHEREAS, the execution and delivery by the Company of this Fifty-first Supplemental Indenture, and the terms of the Bonds of the Fifty-sixth Series and
the Bonds of the Fifty-seventh 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 

  

 -13- 

 
delivery of the Mortgage, in addition to property covered by the First through the Fiftieth 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 Fifty-first 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 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 Fifty-first 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)

  

 -14- 

 
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 Fifty-first 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 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 Fifty-first
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 
 FIFTY-SIXTH SERIES OF BONDS 
 SECTION 1. There shall be a series of bonds designated “6.15% Series A due May 15, 2023” (herein sometimes referred to as the
“Fifty-sixth Series”), each of which shall also bear the descriptive title, First Mortgage Bond, and the form thereof, which is established by Resolution 

  

 -15- 

 
of the Board of Directors of the Company, is attached hereto as Exhibit A. Bonds of the Fifty-sixth Series shall be limited to $50,000,000 in aggregate
principal amount, except as provided in Section 16 of the Mortgage, shall mature on May 15, 2023, and shall be issued as fully registered bonds in denominations of One Million Dollars (or such lesser amount as would permit any holder
thereof to transfer its entire holding of Bonds of the Fifty-sixth Series) and in any multiple or multiples of One Thousand Dollars in excess thereof. Bonds of the Fifty-sixth Series shall bear interest from the date of their issuance at the rate of
6.15% per annum, payable semi-annually on May 15 and November 15 of each year, beginning November 15, 2008, to holders of record on the preceding May 1 or November 1, as applicable. The principal of, Make-Whole Amount,
if any, and interest on Bonds of the Fifty-sixth 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, except as follows. So long as any Purchaser (as defined in that certain Bond Purchase Agreement dated as of May 15, 2008 (the “Bond Purchase Agreement”)) or its nominee shall be the holder of
any Bond, the Company will (or will cause its agent to) pay all sums becoming due with respect to such Bond (including, without limitation, for principal, Make-Whole Amount, if any, and interest) by the method and at the address specified for such
purpose for such Purchaser in Schedule A to the Bond Purchase Agreement, or by such other method or at such other address as such Purchaser shall have from time to time specified to the Company in writing for such purpose, without the presentation
or surrender of such Bond or the making of any notation thereon, except that upon written request of the Company made concurrently with or reasonably promptly after payment or redemption in full of any Bond, such Purchaser shall surrender such Bond
for cancellation, reasonably promptly after any such request, to the Company at its principal executive office or to the Corporate Trustee at its principal corporate trust office. Prior to any sale or other disposition of any Bond held by any
Purchaser or its nominee such person will, at its election, either endorse thereon the amount of principal paid thereon and the last date to which interest has been paid thereon or surrender such Bond to the Company or the Corporate Trustee in
exchange for a new Bond or Bonds pursuant to the terms of this Fifty-first Supplemental Indenture. The Company will afford the benefits of this Section to any Institutional Investor (as defined in the Bond Purchase Agreement) that is the direct or
indirect transferee of any Bond purchased by any Purchaser under this Fifty-first Supplemental Indenture and the Bond Purchase Agreement and has made the same agreement relating to such Bond as such Purchaser has made in Section 8.2 of the Bond
Purchase Agreement. 
 SECTION 2. Bonds of the Fifty-sixth Series shall be dated as in Section 10 of the Mortgage provided. 

SECTION 3. The Bonds of the Fifty-sixth Series, upon the mailing of notice and in the manner provided in Article X of the Mortgage (except that no
published notice shall be required for the Bonds of the Fifty-sixth Series) and with the effect provided in Section 54 thereof, shall be redeemable at the option of the Company, as a whole at any time or in part from time to time, at a
redemption price equal to 100% of the principal amount of the Bonds of the Fifty-sixth Series to be redeemed plus accrued and unpaid interest of the principal amount being redeemed to the date of redemption plus the Make-Whole Amount applicable
thereto. Notwithstanding Section 52 of the Mortgage, in the event a partial redemption of Bonds of the Fifty-sixth Series, Bonds of the Fifty-sixth Series will be redeemed on a pro rata basis. 
  

 -16- 

 “Make-Whole Amount” means, with respect to any Bond of the Fifty-sixth Series, an amount
equal to the excess, if any, of the Discounted Value of the Remaining Scheduled Payments with respect to the Called Principal of such Bond of the Fifty-sixth Series over the amount of such Called Principal, provided that the Make-Whole Amount
may in no event be less than zero. For the purposes of determining the Make-Whole Amount, the following terms have the following meanings: 
 “Called Principal” means, with respect to any Bond of the Fifty-sixth Series, the principal of such Bond of the Fifty-sixth Series that is to be redeemed. 
 “Discounted Value” means, with respect to the Called Principal of any Bond of the Fifty-sixth Series, the amount obtained by discounting
to present value all Remaining Scheduled Payments with respect to such Called Principal from their respective scheduled due dates to the Settlement Date with respect to such Called Principal, in accordance with accepted financial practice and at a
discount factor (applied on the same periodic basis as that on which interest on the bond of such Series is payable) equal to the Reinvestment Yield with respect to such Called Principal. 
 “Reinvestment Yield” means, with respect to the Called Principal of any Bond of the Fifty-sixth Series, .50% over the yield to maturity
implied by (i) the yields reported as of 10:00 a.m. (New York City time) on the second Business Day preceding the Settlement Date with respect to such Called Principal, on the display designated as “Page PX1” (or such other display as
may replace Page PX1) on Bloomberg Financial Markets (“Bloomberg”) or, if Page PX1 (or its successor screen on Bloomberg) is unavailable, the Telerate Access Service screen which corresponds most closely to Page PX1 for the most
recently issued actively traded U.S. Treasury securities having a maturity equal to the Remaining Average Life of such Called Principal as of such Settlement Date, or (ii) if such yields are not reported as of such time or the yields reported
as of such time are not ascertainable (including by way of interpolation), the Treasury Constant Maturity Series Yields reported, for the latest day for which such yields have been so reported as of the second Business Day preceding the Settlement
Date with respect to such Called Principal, in Federal Reserve Statistical Release H.15 (519) (or any comparable successor publication) for actively traded U.S. Treasury securities having a constant maturity equal to the Remaining Average Life
of such Called Principal as of such Settlement Date. Such implied yield will be determined, if necessary, by (a) converting U.S. Treasury bill quotations to bond equivalent yields in accordance with accepted financial practice and
(b) interpolating linearly between (1) the actively traded U.S. Treasury security with the maturity closest to and greater than such Remaining Average Life and (2) the actively traded U.S. Treasury security with the maturity closest
to and less than such Remaining Average Life. The Reinvestment Yield shall be rounded to the number of decimal places as appears in the interest rate of the applicable bond of such Series. 
 “Remaining Average Life” means, with respect to any Called Principal, the number of years (calculated to the nearest one-twelfth year)
obtained by dividing (i) the sum of the products obtained by multiplying (a) that portion of each Remaining Scheduled Payment that constitutes a scheduled principal payment with respect to such Called Principal by (b) the number of
years (calculated to the nearest one-twelfth year) that will elapse between the Settlement Date with respect to such Called Principal and the scheduled due date of such Remaining Scheduled Payment, by (ii) such Called Principal. 
  

 -17- 

 “Remaining Scheduled Payments” means, with respect to the Called Principal of any Bond
of the Fifty-sixth Series, all payments of such Called Principal and interest thereon that would be due after the Settlement Date with respect to such Called Principal if no payment of such Called Principal were made prior to its scheduled due date,
provided that if such Settlement Date is not a date on which interest payments are due to be made under the terms of the Bonds of the Fifty-sixth Series, then the amount of the next succeeding scheduled interest payment will be reduced by the
amount of interest accrued to such Settlement Date and required to be paid on such Settlement Date pursuant to the terms of this Supplemental Indenture. 
 “Settlement Date” means, with respect to the Called Principal of any Bond of the Fifty-sixth Series, the date on which such Called Principal is to be redeemed. 
 SECTION 4. Bonds of the Fifty-sixth Series shall initially be offered and sold in reliance on the exemption contained under Section 4(2) of the
Securities Act of 1933 (the “Securities Act”) to an institution which is an “accredited investor” as defined in Rule 501(a)(1), (2), (3) or (7) under the Securities Act. 
 SECTION 5. Each Bond of the Fifty-sixth Series shall bear a legend in substantially the following form: 
 THIS SECURITY HAS NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933 OR THE SECURITIES LAWS OF ANY OTHER STATE OR OTHER JURISDICTION. NEITHER THIS
SECURITY NOR ANY INTEREST OR PARTICIPATION HEREIN MAY BE REOFFERED, SOLD, ASSIGNED, TRANSFERRED, PLEDGED, ENCUMBERED OR OTHERWISE DISPOSED OF IN THE ABSENCE OF SUCH REGISTRATION OR UNLESS SUCH TRANSACTION IS EXEMPT FROM, OR NOT SUBJECT TO, SUCH
REGISTRATION. 
 SECTION 6. The Company may deliver to the Corporate Trustee in
substitution for any Bonds of the Fifty-sixth 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 Fifty-sixth Series (such substituted
bonds hereinafter being referred to as the “Substituted Mortgage Bonds”). The Substituted Mortgage Bonds may only be delivered to the Corporate Trustee (A) upon execution and delivery of a mortgage and deed of trust or similar
instrument which, among other things, contains requirements (i) for the delivery of net earnings certificates, on terms and conditions and in circumstances consistent with the requirements of the Mortgage (except that the ratio of two and
one-half (2 1/2) times contained in Section 27 of the Mortgage may be replaced with a ratio of two (2) times),
(ii) that the principal amount of bonds authenticated on the basis of property additions not exceed 70% of the lesser of cost or fair market value thereof, (iii) that property and cash be released from the lien of such instrument upon
terms and conditions consistent with the 

  

 -18- 

 
requirements of the Mortgage, (iv) that the Company provide for maintenance and repair expenditures in a manner substantially consistent with
Section 38 of the Mortgage and (v) that bonds may be accelerated by the holders of 25% of the aggregate principal amount of all bonds outstanding under such instrument, and (B) upon receipt by the Corporate Trustee of
(i) ratings, at the Company’s expense, of the original bonds from both Moody’s and S&P (as hereinafter defined), to the extent the original bonds were not so rated, such ratings not giving effect to any downgrade following the
announcement of any transaction related to or involving the issuance of Substituted Mortgage Bonds, (ii) 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 the rating on the original bonds (not giving effect to any downgrade of the original bonds following the announcement of any transaction related to or involving the issuance of Substituted
Mortgage Bonds), (iii) a letter from S&P, 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 rating on the original bonds
(not giving effect to any downgrade of the original bonds following the announcement of any transaction related to or involving the issuance of Substituted Mortgage 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
other 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’ right 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 Corporate Trustee may reasonably request. 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. 
 “Moody’s” means Moody’s Investor Services, 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 Rating
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. 
 ARTICLE II 
 FIFTY-SEVENTH SERIES OF BONDS

 SECTION 1. There shall be a series of bonds designated “6.64% Series B due May 15, 2038” (herein sometimes referred to as
the “Fifty-seventh Series”), each of which shall also bear 

  

 -19- 

 
the descriptive title, First Mortgage Bond, and the form thereof, which is established by Resolution of the Board of Directors of the Company, are attached
hereto as Exhibit B. Bonds of the Fifty-seventh Series shall be limited to $100,000,000 in aggregate principal amount, except as provided in Section 16 of the Mortgage, shall mature on May 15, 2038, and shall be issued as fully registered
bonds in denominations of One Million Dollars (or such lesser amount as would permit any holder thereof to transfer its entire holding of Bonds of the Fifty-seventh Series) and in any multiple or multiples of One Thousand Dollars in excess thereof.
Bonds of the Fifty-seventh Series shall bear interest from the date of their issuance at the rate of 6.64% per annum, payable semi-annually on May 15 and November 15 of each year, beginning November 15, 2008, to holders of record
on the preceding May 1 or November 1, as applicable. The principal of, Make-Whole Amount, if any, and interest on Bonds of the Fifty-seventh 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, except as follows. So long as any Purchaser (as defined in that certain Bond Purchase Agreement dated
as of May 15, 2008 (the “Bond Purchase Agreement”)) or its nominee shall be the holder of any Bond, the Company will (or will cause its agent to) pay all sums becoming due with respect to such Bond (including, without limitation, for
principal, Make-Whole Amount, if any, and interest) by the method and at the address specified for such purpose for such Purchaser in Schedule A to the Bond Purchase Agreement, or by such other method or at such other address as such Purchaser shall
have from time to time specified to the Company in writing for such purpose, without the presentation or surrender of such Bond or the making of any notation thereon, except that upon written request of the Company made concurrently with or
reasonably promptly after payment or redemption in full of any Bond, such Purchaser shall surrender such Bond for cancellation, reasonably promptly after any such request, to the Company at its principal executive office or to the Corporate Trustee
at its principal corporate trust office. Prior to any sale or other disposition of any Bond held by any Purchaser or its nominee such person will, at its election, either endorse thereon the amount of principal paid thereon and the last date to
which interest has been paid thereon or surrender such Bond to the Company or the Corporate Trustee in exchange for a new Bond or Bonds pursuant to the terms of this Fifty-first Supplemental Indenture. The Company will afford the benefits of this
Section to any Institutional Investor (as defined in the Bond Purchase Agreement) that is the direct or indirect transferee of any Bond purchased by any Purchaser under this Fifty-first Supplemental Indenture and the Bond Purchase Agreement and has
made the same agreement relating to such Bond as such Purchaser has made in Section 8.2 of the Bond Purchase Agreement. 
 SECTION 2.
Bonds of the Fifty-seventh Series shall be dated as in Section 10 of the Mortgage provided. 
 SECTION 3. The Bonds of the Fifty-seventh
Series, upon the mailing of notice and in the manner provided in Article X of the Mortgage (except that no published notice shall be required for the Bonds of the Fifty-seventh Series) and with the effect provided in Section 54 thereof, shall
be redeemable at the option of the Company, as a whole at any time or in part from time to time, at a redemption price equal to 100% of the principal amount of the Bonds of the Fifty-seventh Series to be redeemed plus accrued and unpaid interest of
the principal amount being redeemed to the date of redemption plus the Make-Whole Amount applicable thereto. Notwithstanding Section 52 of the Mortgage, in the event a partial redemption of Bonds of the Fifty-seventh Series, Bonds of the
Fifty-seventh Series will be redeemed on a pro rata basis. 
  

 -20- 

 “Make-Whole Amount” means, with respect to any Bond of the Fifty-seventh Series, an
amount equal to the excess, if any, of the Discounted Value of the Remaining Scheduled Payments with respect to the Called Principal of such Bond of the Fifty-seventh Series over the amount of such Called Principal, provided that the
Make-Whole Amount may in no event be less than zero. For the purposes of determining the Make-Whole Amount, the following terms have the following meanings: 
 “Called Principal” means, with respect to any Bond of the Fifty-seventh Series, the principal of such Bond of the Fifty-seventh Series that is to be redeemed. 
 “Discounted Value” means, with respect to the Called Principal of any Bond of the Fifty-seventh Series, the amount obtained by
discounting to present value all Remaining Scheduled Payments with respect to such Called Principal from their respective scheduled due dates to the Settlement Date with respect to such Called Principal, in accordance with accepted financial
practice and at a discount factor (applied on the same periodic basis as that on which interest on the bond of such Series is payable) equal to the Reinvestment Yield with respect to such Called Principal. 
 “Reinvestment Yield” means, with respect to the Called Principal of any Bond of the Fifty-seventh Series, .50% over the yield to
maturity implied by (i) the yields reported as of 10:00 a.m. (New York City time) on the second Business Day preceding the Settlement Date with respect to such Called Principal, on the display designated as “Page PX1” (or such other
display as may replace Page PX1) on Bloomberg Financial Markets (“Bloomberg”) or, if Page PX1 (or its successor screen on Bloomberg) is unavailable, the Telerate Access Service screen which corresponds most closely to Page PX1 for
the most recently issued actively traded U.S. Treasury securities having a maturity equal to the Remaining Average Life of such Called Principal as of such Settlement Date, or (ii) if such yields are not reported as of such time or the yields
reported as of such time are not ascertainable (including by way of interpolation), the Treasury Constant Maturity Series Yields reported, for the latest day for which such yields have been so reported as of the second Business Day preceding the
Settlement Date with respect to such Called Principal, in Federal Reserve Statistical Release H.15 (519) (or any comparable successor publication) for actively traded U.S. Treasury securities having a constant maturity equal to the Remaining
Average Life of such Called Principal as of such Settlement Date. Such implied yield will be determined, if necessary, by (a) converting U.S. Treasury bill quotations to bond equivalent yields in accordance with accepted financial practice and
(b) interpolating linearly between (1) the actively traded U.S. Treasury security with the maturity closest to and greater than such Remaining Average Life and (2) the actively traded U.S. Treasury security with the maturity closest
to and less than such Remaining Average Life. The Reinvestment Yield shall be rounded to the number of decimal places as appears in the interest rate of the applicable bond of such Series. 
 “Remaining Average Life” means, with respect to any Called Principal, the number of years (calculated to the nearest one-twelfth year)
obtained by dividing (i) the sum of the products obtained by multiplying (a) that portion of each Remaining Scheduled Payment that 

  

 -21- 

 
constitutes a scheduled principal payment with respect to such Called Principal by (b) the number of years (calculated to the nearest one-twelfth year)
that will elapse between the Settlement Date with respect to such Called Principal and the scheduled due date of such Remaining Scheduled Payment, by (ii) such Called Principal. 
 “Remaining Scheduled Payments” means, with respect to the Called Principal of any Bond of the Fifty-seventh Series, all payments of such
Called Principal and interest thereon that would be due after the Settlement Date with respect to such Called Principal if no payment of such Called Principal were made prior to its scheduled due date, provided that if such Settlement Date is
not a date on which interest payments are due to be made under the terms of the Bonds of the Fifty-seventh Series, then the amount of the next succeeding scheduled interest payment will be reduced by the amount of interest accrued to such Settlement
Date and required to be paid on such Settlement Date pursuant to the terms of this Supplemental Indenture. 
 “Settlement
Date” means, with respect to the Called Principal of any Bond of the Fifty-seventh Series, the date on which such Called Principal is to be redeemed. 
 SECTION 4. Bonds of the Fifty-seventh Series shall initially be offered and sold in reliance on the exemption contained under Section 4(2) of the Securities Act of 1933 (the “Securities Act”) to an
institution which is an “accredited investor” as defined in Rule 501(a)(1), (2), (3) or (7) under the Securities Act. 
 SECTION 5. Each Bond of the Fifty-seventh Series shall bear a legend in substantially the following form: 
 THIS SECURITY HAS NOT
BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933 OR THE SECURITIES LAWS OF ANY OTHER STATE OR OTHER JURISDICTION. NEITHER THIS SECURITY NOR ANY INTEREST OR PARTICIPATION HEREIN MAY BE REOFFERED, SOLD, ASSIGNED, TRANSFERRED, PLEDGED, ENCUMBERED OR
OTHERWISE DISPOSED OF IN THE ABSENCE OF SUCH REGISTRATION OR UNLESS SUCH TRANSACTION IS EXEMPT FROM, OR NOT SUBJECT TO, SUCH REGISTRATION. 
 SECTION 6. The Company may deliver to the Corporate Trustee in substitution for any Bonds of the
Fifty-seventh 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 Fifty-seventh Series (such substituted bonds hereinafter being referred to
as the “Substituted Mortgage Bonds”). The Substituted Mortgage Bonds may only be delivered to the Corporate Trustee (A) upon execution and delivery of a mortgage and deed of trust or similar instrument which, among other things,
contains requirements (i) for the delivery of net earnings certificates, on terms and conditions and in circumstances consistent with the requirements of the Mortgage (except that the ratio of two and one-half (2 1/2) times contained in Section 27 of the Mortgage may be replaced with a ratio of two (2) times), (ii) that the
principal amount of bonds authenticated on the basis of property additions 

  

 -22- 

 
not exceed 70% of the lesser of cost or fair market value thereof, (iii) that property and cash be released from the lien of such instrument upon terms
and conditions consistent with the requirements of the Mortgage, (iv) that the Company provide for maintenance and repair expenditures in a manner substantially consistent with Section 38 of the Mortgage and (v) that bonds may be
accelerated by the holders of 25% of the aggregate principal amount of all bonds outstanding under such instrument, and (B) upon receipt by the Corporate Trustee of (i) ratings, at the Company’s expense, of the original bonds from
both Moody’s and S&P (as hereinafter defined), to the extent the original bonds were not so rated, such ratings not giving effect to any downgrade following the announcement of any transaction related to or involving the issuance of
Substituted Mortgage Bonds, (ii) 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 the rating on the
original bonds (not giving effect to any downgrade of the original bonds following the announcement of any transaction related to or involving the issuance of Substituted Mortgage Bonds), (iii) a letter from S&P, 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 rating on the original bonds (not giving effect to any downgrade of the original bonds following the
announcement of any transaction related to or involving the issuance of Substituted Mortgage 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 other 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’ right 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 Corporate Trustee may reasonably request. 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. 
 “Moody’s” means Moody’s Investor Services, 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 Rating 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. 
  

 -23- 

 ARTICLE III 
 ADDITIONAL PROVISIONS RELATING TO THE BONDS OF THE FIFTY-SIXTH SERIES 
 AND THE BONDS OF THE FIFTY-SEVENTH
SERIES 
 SECTION 1. Upon the written request of any holder of Bonds of the Fifty-sixth Series or any holder of the Bonds of the
Fifty-seventh Series, and at the cost and expense of such holder, the Company shall, within 15 days of such request, take appropriate actions to cause the Bonds of the Fifty-sixth Series or the Bonds of the Fifty-seventh Series, as the case may be,
to be rated by Moody’s, S&P or another nationally recognized statistical ratings organization acceptable to such holder and the Company shall cause a private ratings letter to be provided to such holder. 
 SECTION 2. Notwithstanding any provision of the Mortgage or any Supplemental Indenture thereto which may otherwise permit the Company to engage in any
transaction pursuant to which assets are sold or distributed or the business of the Company is subdivided or split, in the event of such transaction, the Bonds of the Fifty-sixth Series and Bonds of the Fifty-seventh Series shall remain obligations
of and be secured by assets of an entity regulated as a public utility company by the State of Kansas. 
 ARTICLE IV 
 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 Fifty-sixth Series or holders of the Bonds of the Fifty-seventh 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 Fifty-sixth Series or holders of the Bonds of the Fifty-seventh 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 3. The Company reserves the
right, subject to appropriate action, but without any consent or other action by holders of Bonds of the Fifty-sixth Series or holders of the Bonds of the Fifty-seventh Series, or of any subsequent series of bonds, to amend the Mortgage to:

 (I) Simplify the provisions for release of obsolete property, de minimis property releases and substitution of unfunded property;

 (II) Permit additional terms of bonds or forms of bond in supplemental indentures, including terms for medium-term notes; 
 (III) Make any changes necessary to conform the Mortgage with the requirements of the Trust Indenture Act; 
 (IV) Eliminate the requirement to have an individual trustee under the Mortgage; and 
  

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 (V) Replace the phase “two and one-half
(2 1/2)” in Section 27 of the Mortgage with “two (2)”. 
 ARTICLE V 
 MISCELLANEOUS PROVISIONS

 SECTION 1. All Bonds of the Fifty-sixth Series and Bonds of the Fifty-seventh 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 Fifty-first Supplemental Indenture,
the terms defined in the Mortgage, as heretofore supplemented, shall, for all purposes of this Fifty-first 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 Fifty-first 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 Fifty-first 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 Fifty-first 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 Fifty-first
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 Fifty-first Supplemental 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 Fifty-first 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 Fifty-first Supplemental Indenture or any covenant,
condition, stipulation, promise or agreement hereof, and all the covenants, conditions, stipulations, promises and agreements in this Fifty-first 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. 
  

 -25- 

 SECTION 6. This Fifty-first 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. 
 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/ Cynthia Couch
	 		 	
			
	 /s/ Peter L. Sumners
	 		 	

  

			
	THE BANK OF NEW YORK TRUST COMPANY, N.A. as Trustee
		
	By:	 	 /s/ D. G. Donovan

  

					
	Attest:	 		 	(corporate seal)
			
	 /s/ A. Hernandez
	 		 	

  

 -26- 

	
	 /s/ Judith L. Bartolini

	Judith L. Bartolini

  

					
	 Executed, sealed and delivered by
 THE BANK OF NEW YORK
TRUST COMPANY, N.A.
 and JUDITH L. BARTOLINI, in the presence of:
	 		 	
			
	 /s/ Robert Cafarelli
	 		 	
			
	 /s/ T. Mosterd
	 		 	

  

 -27- 

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

 BE IT REMEMBERED, that on this 15th day of May, 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 15th day of May, 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 15th day of May 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 11-8-08

  

 -28- 

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

 BE IT REMEMBERED, that on this 15th day of May, 2008, before me, the undersigned, a Notary Public
within and for the County and State aforesaid, came D. G. 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 15
th day of May, 2008, before me appeared A. Hernandez, to me personally known, who being by me duly sworn did say that she is an Assistant Treasurer
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 A. Hernandez acknowledged said instrument to be the free act and deed of said corporation. 
 On the 15th day of May in the year 2008, before me personally came D. G. Donovan, to me known, who, being by me duly
sworn, did depose and say that he resides at Chicago, 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/ Julie Meadors

	NOTARY PUBLIC, STATE OF ILLINOIS
	NO.
	QUALIFIED IN COOK COUNTY
	COMMISSION EXPIRES 1-7-12

  

 -29- 

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

 On this 15th day of May 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, 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 he 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/ Julie Meadors

	NOTARY PUBLIC, STATE OF ILLINOIS
	NO.
	QUALIFIED IN COOK COUNTY
	COMMISSION EXPIRES 1-7-12

  

 -30- 

 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 “Fiftieth,”
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 Fifty-sixth Series of bonds and a Fifty-seventh Series
of bonds to be issued under and secured by the Indenture, the Supplemental Indentures and a new Supplemental Indenture dated as of May 15, 2008, (hereinafter called the “Fifty-first Supplemental Indenture”). 
 8. The purpose of the Fifty-first Supplemental Indenture is to reflect the issuance and of $150,000,000 principal amount of First Mortgage Bonds.

 9. $77,360,000 of the principal amount of the First Mortgage Bonds issued pursuant to the Fifty-first 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 Fifty-first Supplemental Indenture the registration fee with respect to $77,360,000 of the
indebtedness of $150,000,000 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). Under the Fifty-first Supplemental Indenture, the registration fee with respect to $72,640,000 of the indebtedness of $150,000,000 is being delivered herewith. 
 FURTHER AFFIANT SAITH NAUGHT. 
  

	
	 /s/ Larry D. Irick

	Larry D. Irick, Secretary
	Kansas Gas and Electric Company

 Subscribed and sworn to before me
this 15th day of May, 2008. 
  

	
	 /s/ Patti Beasley

	Notary Public

 (notary seal) 
  

 -2- 

 Exhibit A 
 FORM OF BOND 
 THIS SECURITY HAS NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933 OR THE
SECURITIES LAWS OF ANY OTHER STATE OR OTHER JURISDICTION. NEITHER THIS SECURITY NOR ANY INTEREST OR PARTICIPATION HEREIN MAY BE REOFFERED, SOLD, ASSIGNED, TRANSFERRED, PLEDGED, ENCUMBERED OR OTHERWISE DISPOSED OF IN THE ABSENCE OF SUCH REGISTRATION
OR UNLESS SUCH TRANSACTION IS EXEMPT FROM, OR NOT SUBJECT TO, SUCH REGISTRATION. 
 KANSAS GAS AND ELECTRIC COMPANY 
 FIRST MORTGAGE BOND, 6.15% SERIES A DUE MAY 15, 2023 
  

			
	No. RA-    	  	$            

 KANSAS GAS AND ELECTRIC COMPANY, a corporation of the State of Kansas (hereinafter called the
“Company”), for value received, hereby promises to pay to                     , or registered assigns, on May 15, 2023,
                                 DOLLARS in such 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 to the registered owner hereof interest hereon in like coin or currency from the date of issuance at the rate of 6.15% per annum,
payable beginning on November 15, 2008 semi-annually on May 15 and November 15 of each year until maturity. The principal of, Make-Whole Amount, if any, and interest on this bond shall be payable at the office or agency of the Company
in the Borough of Manhattan, The City of New York, except as otherwise provided for in Section 1 of Article I of the Supplemental Indenture (as hereunder defined). 
 This bond is one of an issue of bonds of the Company issuable in series and is one of a series known as its First Mortgage Bonds, 6.15% Series A due May 15, 2023, (referred to herein as “Bonds of the
Fifty-sixth Series”), the Bonds of this series being limited to FIFTY MILLION DOLLARS ($50,000,000) in aggregate principal amount at any one time outstanding, all bonds of all series issued and to be issued under and equally secured (except in
so far as any sinking or other fund, established in accordance with the provisions of the Mortgage hereinafter mentioned, may afford additional security for the bonds of any particular series and except that bonds representing future advances, if
any, in excess of the maximum amount 

  

 A-1 

 
of future advances permitted to be secured by the chattel mortgage created by the Mortgage, may not be secured by such chattel mortgage equally with bonds
theretofore issued) by a Mortgage and Deed of Trust, together with any indenture supplemental thereto (including the Fifty-first Supplemental Indenture, dated as of May 15, 2008 (the “Supplemental Indenture”)), dated as of
April 1, 1940 (the “Mortgage”), executed by the Company 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”). Reference is made to the Mortgage for a description of the property mortgaged and pledged, the nature and extent of the security, the rights of the holders of the bonds
and of the Trustees in respect thereof, the duties and immunities of the Trustees and the terms and conditions upon which the bonds are and are to be secured and the circumstances under which additional bonds may be issued and the definitions of
terms not otherwise defined herein. With the consent of the Company and to the extent permitted by and as provided in the Mortgage, the rights and obligations of the Company and/or the rights of the holders of the bonds and/or coupons and/or the
terms and provisions of the Mortgage may be modified or altered by affirmative vote of the holders of at least sixty per centum (60%) in principal amount of the bonds then outstanding under the Mortgage and, if the rights of one or more, but
less than all, series of bonds then outstanding are to be affected, then also by affirmative vote of the holders of at least sixty per centum (60%) in principal amount of the bonds then outstanding of the series of bonds so to be affected
(excluding in any case bonds disqualified from voting by reason of the Company’s interest therein as provided in the Mortgage); provided that, without the consent of the holder hereof, no such modification or alteration shall impair or
affect the right of the holder to receive payment of the principal of and interest on this bond, on or after the respective due dates expressed herein, or permit the creation of any lien equal or prior to the lien of the Mortgage or deprive the
holder of a lien on the mortgaged and pledged property. 
 The principal hereof may be declared or may become due prior to the maturity date hereinbefore
named on the conditions, in the manner and at the time set forth in the Mortgage, upon the occurrence of a default as in the Mortgage provided. 
 Subject to
Section 5 of Article I of the Supplemental Indenture, at the option of the registered owner, any Bonds of the Fifty-sixth 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 Fifty-sixth 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. 
 Subject
to Section 5 of Article I of the Supplemental Indenture, Bonds of the Fifty-sixth 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. 
  

 A-2 

 The bonds of this series are subject to redemption as provided in the Supplemental Indenture. 
 No recourse shall be had for the payment of the principal of, Make-Whole Amount, if any, or interest on this bond against any incorporator or any past, present or future
subscriber to the capital stock, stockholder, officer or director of the Company or of any predecessor or successor corporation, as such, either directly or through the Company or any predecessor or successor corporation under any rule of law,
statute or constitution or by the enforcement of any assessment or otherwise, all such liability of incorporators, subscribers, stockholders, officers and directors being released by the holder or owner hereof by the acceptance of this bond and
being likewise waived and released by the terms of the Mortgage. 
 This bond shall not become obligatory until The Bank of New York Trust Company, N.A., the
Corporate Trustee under the Mortgage, or its successor thereunder, shall have signed the form of certificate endorsed hereon. 
  

 A-3 

 IN WITNESS WHEREOF, KANSAS GAS AND ELECTRIC COMPANY has caused this bond to be signed in its corporate name by an
authorized officer by their signature or a facsimile thereof, and its corporate seal to be impressed or imprinted hereon and attested by its Secretary or one of its Assistant Secretaries by their signature or a facsimile thereof, on
                 , 2008. 
  

			
	KANSAS GAS AND ELECTRIC COMPANY
		
	By	 	  

		 	Vice President and Treasurer

 Attest: 
  

	
	  

	Secretary

  

 A-4 

 CORPORATE TRUSTEE’S CERTIFICATE 
 This bond is one of the bonds, of the series herein designated, described or provided for in the within-mentioned Mortgage. 
  

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

		 	Authorized Officer

  

 A-5 

 FOR VALUE RECEIVED, the undersigned sells, assigns and transfers unto 
 PLEASE INSERT SOCIAL SECURITY OR OTHER 
     IDENTIFYING NUMBER OF ASSIGNEE 
  

			
	 	  	
	 	  	 

  

	
	 

 Name and address of assignee must be printed or typewritten 
  

	
	 

 the within bond of KANSAS GAS AND ELECTRIC COMPANY and does hereby irrevocably constitute and appoint 

 

			
	 	 	Attorney

 to transfer the said bond on the books of the within-named Company, with full power of substitution in the
premises. 
 Dated:                     
             
  

 A-6 

 Exhibit B 
 FORM OF BOND 
 THIS SECURITY HAS NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933 OR THE
SECURITIES LAWS OF ANY OTHER STATE OR OTHER JURISDICTION. NEITHER THIS SECURITY NOR ANY INTEREST OR PARTICIPATION HEREIN MAY BE REOFFERED, SOLD, ASSIGNED, TRANSFERRED, PLEDGED, ENCUMBERED OR OTHERWISE DISPOSED OF IN THE ABSENCE OF SUCH REGISTRATION
OR UNLESS SUCH TRANSACTION IS EXEMPT FROM, OR NOT SUBJECT TO, SUCH REGISTRATION. 
 KANSAS GAS AND ELECTRIC COMPANY 
 FIRST MORTGAGE BOND, 6.64% SERIES B DUE MAY 15, 2038 
  

			
	No. RB-    ___	  	$            

 KANSAS GAS AND ELECTRIC COMPANY, a corporation of the State of Kansas (hereinafter called the
“Company”), for value received, hereby promises to pay to                     , or registered assigns, on May 15, 2038,
                                 DOLLARS in such 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 to the registered owner hereof interest hereon in like coin or currency from the date of issuance at the rate of 6.64% per annum,
payable beginning on November 15, 2008 semi-annually on May 15 and November 15 of each year until maturity. The principal of, Make-Whole Amount, if any, and interest on this bond shall be payable at the office or agency of the Company
in the Borough of Manhattan, The City of New York, except as otherwise provided for in Section 1 of Article II of the Supplemental Indenture (as hereunder defined). 
 This bond is one of an issue of bonds of the Company issuable in series and is one of a series known as its First Mortgage Bonds, 6.64% Series B due May 15, 2038, (referred to herein as “Bonds of the
Fifty-seventh Series”), the Bonds of this series being limited to ONE HUNDRED MILLION DOLLARS ($100,000,000) in aggregate principal amount at any one time outstanding, all bonds of all series issued and to be issued under and equally secured
(except in so far as any sinking or other fund, established in accordance with the provisions of the Mortgage hereinafter mentioned, may afford additional security for the bonds of any particular series and except that bonds representing future
advances, if any, in excess of the 

  

 B-1 

 
maximum amount of future advances permitted to be secured by the chattel mortgage created by the Mortgage, may not be secured by such chattel mortgage
equally with bonds theretofore issued) by a Mortgage and Deed of Trust, together with any indenture supplemental thereto (including the Fifty-first Supplemental Indenture, dated as of May 15, 2008 (the “Supplemental Indenture”)),
dated as of April 1, 1940 (the “Mortgage”), executed by the Company 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”). Reference is made to the Mortgage for a description of the property mortgaged and pledged, the nature and extent of the security, the rights of the
holders of the bonds and of the Trustees in respect thereof, the duties and immunities of the Trustees and the terms and conditions upon which the bonds are and are to be secured and the circumstances under which additional bonds may be issued and
the definitions of terms not otherwise defined herein. With the consent of the Company and to the extent permitted by and as provided in the Mortgage, the rights and obligations of the Company and/or the rights of the holders of the bonds and/or
coupons and/or the terms and provisions of the Mortgage may be modified or altered by affirmative vote of the holders of at least sixty per centum (60%) in principal amount of the bonds then outstanding under the Mortgage and, if the rights of
one or more, but less than all, series of bonds then outstanding are to be affected, then also by affirmative vote of the holders of at least sixty per centum (60%) in principal amount of the bonds then outstanding of the series of bonds so to
be affected (excluding in any case bonds disqualified from voting by reason of the Company’s interest therein as provided in the Mortgage); provided that, without the consent of the holder hereof, no such modification or alteration shall
impair or affect the right of the holder to receive payment of the principal of and interest on this bond, on or after the respective due dates expressed herein, or permit the creation of any lien equal or prior to the lien of the Mortgage or
deprive the holder of a lien on the mortgaged and pledged property. 
 The principal hereof may be declared or may become due prior to the maturity date
hereinbefore named on the conditions, in the manner and at the time set forth in the Mortgage, upon the occurrence of a default as in the Mortgage provided. 
 Subject to Section 5 of Article II of the Supplemental Indenture, at the option of the registered owner, any Bonds of the Fifty-seventh 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 Fifty-seventh 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. 
 Subject to Section 5 of Article II of the Supplemental Indenture, Bonds of the Fifty-seventh 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. 
  

 B-2 

 The bonds of this series are subject to redemption as provided in the Supplemental Indenture. 
 No recourse shall be had for the payment of the principal of, Make-Whole Amount, if any, or interest on this bond against any incorporator or any past, present or future
subscriber to the capital stock, stockholder, officer or director of the Company or of any predecessor or successor corporation, as such, either directly or through the Company or any predecessor or successor corporation under any rule of law,
statute or constitution or by the enforcement of any assessment or otherwise, all such liability of incorporators, subscribers, stockholders, officers and directors being released by the holder or owner hereof by the acceptance of this bond and
being likewise waived and released by the terms of the Mortgage. 
 This bond shall not become obligatory until The Bank of New York Trust Company, N.A., the
Corporate Trustee under the Mortgage, or its successor thereunder, shall have signed the form of certificate endorsed hereon. 
  

 B-3 

 IN WITNESS WHEREOF, KANSAS GAS AND ELECTRIC COMPANY has caused this bond to be signed in its corporate name by an
authorized officer by their signature or a facsimile thereof, and its corporate seal to be impressed or imprinted hereon and attested by its Secretary or one of its Assistant Secretaries by their signature or a facsimile thereof, on
                 , 2008. 
  

			
	KANSAS GAS AND ELECTRIC COMPANY
		
	By	 	  

		 	Vice President and Treasurer

 Attest: 
  

	
	  

	Secretary

  

 B-4 

 CORPORATE TRUSTEE’S CERTIFICATE 
 This bond is one of the bonds, of the series herein designated, described or provided for in the within-mentioned Mortgage. 
  

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

		 	Authorized Officer

  

 B-5 

 FOR VALUE RECEIVED, the undersigned sells, assigns and transfers unto 
 PLEASE INSERT SOCIAL SECURITY OR OTHER 
     IDENTIFYING NUMBER OF ASSIGNEE 
  

			
	 	  	
	 	  	 

  

	
	 

 Name and address of assignee must be printed or typewritten 
  

	
	 

 the within bond of KANSAS GAS AND ELECTRIC COMPANY and does hereby irrevocably constitute and appoint 

 

			
	 	 	Attorney

 to transfer the said bond on the books of the within-named Company, with full power of substitution in the
premises. 
  

					
	Dated:                                  	  		  	  

  

 B-6

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