Document:

Supplemental Indenture

 EXHIBIT 4.21 
  

 PPL ENERGY SUPPLY, LLC, 
 Issuer 
 TO 
 JPMORGAN CHASE BANK, N.A., 
 (formerly known as The Chase Manhattan Bank),

 Trustee 
  

 Supplemental Indenture No.      
 Dated as of                          
 Supplemental to the Indenture 
 dated
as of October 1, 2001 
 Establishing a series of Securities designated 
 Senior Notes     % Series             , due
     
 limited in aggregate principal amount to $
             
  

 SUPPLEMENTAL INDENTURE No.     , dated as of
                                 between PPL ENERGY SUPPLY, LLC, a limited
liability company duly organized and existing under the laws of the State of Delaware (herein called the “Company”), and JPMORGAN CHASE BANK, N.A., a national banking association (formerly known as The Chase Manhattan Bank), as
Trustee (herein called the “Trustee”), under the Indenture dated as of October 1, 2001 (hereinafter called the “Original Indenture”), this Supplemental Indenture No.      being supplemental
thereto. The Original Indenture and any and all indentures and instruments supplemental thereto are hereinafter sometimes collectively called the “Indenture.” 
 Recitals of the Company 
 The Original Indenture was authorized, executed and delivered by the
Company to provide for the issuance by the Company from time to time of its Securities (such term and all other capitalized terms used herein without definition having the meanings assigned to them in the Original Indenture), to be issued in one or
more series as contemplated therein. 
 As contemplated by Sections 301 and 1201(f) of the Original Indenture, the Company wishes to
establish a series of Securities to be designated “Senior Notes,     % Series             , due
                        ” to be limited in aggregate principal amount (except as contemplated in Section 301(b)
and the last paragraph of Section 301 of the Original Indenture) to $            , such series of Securities to be hereinafter sometimes called “Series
No.     .” 
 The Company has duly authorized the execution and delivery of this Supplemental Indenture
No.      to establish the Securities of Series No.      and has duly authorized the issuance of such Securities; and all acts necessary to make this Supplemental Indenture No.
     a valid agreement of the Company and to make the Securities of Series No.      valid obligations of the Company have been performed. 
 NOW, THEREFORE, THIS SUPPLEMENTAL INDENTURE No.      WITNESSETH: 
 For and in consideration of the premises and of the purchase of the Securities by the Holders thereof, it is mutually covenanted and agreed, for the
equal and proportionate benefit of all Holders of the Securities of Series No. __, as follows: 
 ARTICLE ONE 
          Series of Securities 
 Section 1. There is hereby created a series of Securities designated “Senior Notes,     %
Series         ” and limited in aggregate principal amount (except as contemplated in Section 301(b) and the last paragraph of Section 301 of the Original Indenture) to
$            . The form and terms of the Securities of Series No.      shall be established in an Officer’s Certificate of the Company, as
contemplated by Section 301 of the Original Indenture. 
  

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 Section 2. The Company hereby agrees that, if the Company shall make any deposit of money
and/or Eligible Obligations with respect to any Securities of Series No. __, or any portion of the principal amount thereof, as contemplated by Section 701 of the Indenture, the Company shall not deliver an Officer’s Certificate
described in clause (z) in the first paragraph of said Section 701 unless the Company shall also deliver to the Trustee, together with such Officer’s Certificate, either: 
 (A) an instrument wherein the Company, notwithstanding the satisfaction and discharge of its indebtedness in respect of such Securities,
shall assume the obligation (which shall be absolute and unconditional) to irrevocably deposit with the Trustee or Paying Agent such additional sums of money, if any, or additional Eligible Obligations (meeting the requirements of Section 701),
if any, or any combination thereof, at such time or times, as shall be necessary, together with the money and/or Eligible Obligations theretofore so deposited, to pay when due the principal of and premium, if any, and interest due and to become due
on such Securities or portions thereof, all in accordance with and subject to the provisions of said Section 701; provided, however, that such instrument may state that the obligation of the Company to make additional deposits as aforesaid
shall arise only upon the delivery to the Company by the Trustee of a notice asserting the deficiency and showing the calculation thereof and shall continue only until the Company shall have delivered to the Trustee an opinion of an independent
public accountant of nationally recognized standing to the effect that no such deficiency exists and showing the calculation of the sufficiency of the deposits then held by the Trustee; or 
 (B) an Opinion of Counsel to the effect that the Holders of such Securities, or portions of the principal amount thereof, will not
recognize income, gain or loss for United States federal income tax purposes as a result of the satisfaction and discharge of the Company’s indebtedness in respect thereof and will be subject to United States federal income tax on the same
amounts, at the same times and in the same manner as if such satisfaction and discharge had not been effected. 
 Section 3. The
Company agrees that for so long as any Securities of Series No.      shall remain Outstanding, without consent of the Holders of a majority in principal amount of the Outstanding Securities of such series, the Company
shall not create, incur or assume any Lien (other than Permitted Liens) upon any property of the Company, whether now owned or hereafter acquired, in order to secure any Debt of the Company. The foregoing agreement shall not restrict the ability of
Subsidiaries or Affiliates of the Company to create, incur or assume any Lien upon their properties or assets. 
 Section 4. The
provisions of Section 3 above shall not prohibit the creation, issuance, incurrence or assumption of any Lien if either 
 (A) the Company shall make effective provision whereby all Securities of Series No.      then Outstanding shall be secured equally and ratably with all other Debt then outstanding under such Lien; or

  

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 (B) the Company shall deliver to the Trustee bonds, notes or other evidences of
indebtedness secured by the Lien which secures such Debt (hereinafter called “Secured Obligations”) (I) in an aggregate principal amount equal to the aggregate principal amount of the Securities of Series
No.      then Outstanding, (II) maturing (or being subject to mandatory redemption) on such dates and in such principal amounts that, at each Stated Maturity of the Outstanding Securities of Series No. __, there
shall mature (or be redeemed) Secured Obligations equal in principal amount to such Securities then to mature and (III) containing, in addition to any mandatory redemption provisions applicable to all Secured Obligations outstanding under such Lien
and any mandatory redemption provisions contained therein pursuant to clause (II) above, mandatory redemption provisions correlative to the provisions, if any, for the mandatory redemption (pursuant to a sinking fund or otherwise) of the Securities
of Series No.      or for the redemption thereof at the option of the Holder, as well as a provision for mandatory redemption upon an acceleration of the maturity of all Outstanding Securities of Series
No.      following an Event of Default (such mandatory redemption to be rescinded upon the rescission of such acceleration); it being expressly understood that such Secured Obligations (X) may, but need not, bear
interest, (Y) may, but need not, contain provisions for the redemption thereof at the option of the issuer, any such redemption to be made at a redemption price or prices not less than the principal amount thereof and (Z) shall be held by
the Trustee for the benefit of the Holders of all Securities of Series No.      from time to time Outstanding subject to such terms and conditions relating to surrender to the Company, transfer restrictions, voting,
application of payments of principal and interest and other matters as shall be set forth in an indenture supplemental hereto specifically providing for the delivery to the Trustee of such Secured Obligations. 
 Section 5. If the Company shall elect either of the alternatives described in Section 4 above, the Company shall deliver to the Trustee:

 (A) an indenture supplemental to the Original Indenture (I) together with any appropriate inter-creditor arrangements,
whereby such Securities of Series No.      then Outstanding shall be secured by the Lien referred to in Section 4 above equally and ratably with all other indebtedness secured by such Lien or (II) providing for
the delivery to the Trustee of Secured Obligations; and 
 (B) an Officer’s Certificate (I) stating that, to the
knowledge of the signer, (1) no Event of Default has occurred and is continuing and (2) no event has occurred and is continuing which entitles the secured party under such Lien to accelerate the maturity of the indebtedness outstanding
thereunder and (II) stating the aggregate principal amount of indebtedness issuable, and then proposed to be issued, under and secured by such Lien; and 
 (C) an Opinion of Counsel (I) if the Securities of Series No.      then Outstanding are to be secured by such Lien, to the effect that all such Securities then Outstanding are
entitled to the benefit of such Lien equally and ratably with all other indebtedness outstanding under such Lien or (II) if Secured Obligations are to be 

  

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delivered to the Trustee, to the effect that such Secured Obligations have been duly issued under such Lien and constitute valid obligations, entitled to the
benefit of such Lien equally and ratably with all other indebtedness then outstanding under such Lien. 
 Section 6. [The Company
agrees that for so long as any Securities of Series No.      shall remain Outstanding, and except for the sale of the properties and assets of the Company substantially as an entirety pursuant to Article Eleven of the
Original Indenture, and other than assets required to be sold to conform with governmental requirements, the Company shall not, and shall not permit any of its Subsidiaries to, consummate any Asset Sale, if the aggregate net book value of all such
Asset Sales consummated during the four calendar quarters immediately preceding any date of determination would exceed 15% of the consolidated assets of the Company and its consolidated Subsidiaries as of the beginning of the Company’s most
recently ended full fiscal quarter; provided, however, that any such Asset Sale will be disregarded for purposes of the 15% limitation specified above (i) if any such Asset Sale is in the ordinary course of business, (ii) to the extent
that such assets are worn out or are no longer useful or necessary in connection with the operation of the business of the Company or its Subsidiaries, (iii) to the extent such assets are being transferred to a wholly-owned Subsidiary of the
Company, (iv) to the extent any such assets subject to any such Asset Sale involve transfers of assets of or equity interests in connection with (a) the formation of any joint venture between the Company or any of its Subsidiaries and any
other entity, or (b) any project development and acquisition activities, and (v) if the proceeds thereof (a) are, within 12 months of such Asset Sale, invested or reinvested by the Company or any Subsidiary in a Permitted Business,
(b) are used by the Company or a Subsidiary to repay Debt of the Company or such Subsidiary, or (c) are retained by the Company or its Subsidiaries. Additionally, if prior to any Asset Sale that otherwise would cause the 15% limitation to
be exceeded, Moody’s and S&P confirm the then current long term debt rating of such Securities of Series No.      after giving effect to such Asset Sale, such Asset Sale shall also be disregarded for purposes
of the foregoing limitations.] 
 Section 7. [So long as any Securities of Series No.      shall
remain Outstanding, the following event shall be an Event of Default with respect to the Securities of Series No. __: the occurrence of a matured event of default, as defined in any instrument of the Company under which there may be issued or
evidenced any Debt of the Company, that has resulted in the acceleration of such Debt in excess of $25,000,000, or any default in payment of Debt in excess of $25,000,000 at final maturity, after the expiration of any applicable grace or cure
periods; provided, however, that the waiver or cure of any such default under any such instrument or Debt shall constitute a waiver and cure of the corresponding Event of Default under the Indenture and the rescission and annulment of the
consequences thereof shall constitute a rescission and annulment of the corresponding consequences under the Indenture.] 
 Section 8. So long as any Securities of Series No.      shall remain Outstanding, for purposes of Section 1101(a) of the Indenture, “corporation” shall be deemed to refer to a
corporation or limited liability company. For all other purposes, the definition of “corporation” in Section 101 of the Original Indenture shall govern. 
  

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 Section 9. For the purposes of this Article One, except as otherwise expressly provided or
unless the context otherwise requires: 
 (A) “Asset Sale” shall mean any sale of any assets of the Company or its
Subsidiaries including by way of the sale by the Company or any of its Subsidiaries of equity interests in such Subsidiaries. 
 (B) “Debt”, with respect to any Person, means (A) indebtedness of such Person for borrowed money evidenced by a bond, debenture, note or other similar written instrument or agreement by which such Person is obligated to repay
such borrowed money and (B) any guaranty by such Person of any such indebtedness of another Person. “Debt” does not include, among other things, (W) indebtedness of such Person under any installment sale or conditional sale
agreement or any other agreement relating to indebtedness for the deferred purchase price of property or services, (X) any trade obligations (including obligations under agreements relating to the purchase and sale of any commodity, including
power purchase or sale agreements, and any commodity hedges or derivatives regardless or whether such transaction is a “financial” or physical transaction) or other obligations of such Person in the ordinary course of business,
(Y) obligations of such Person under any lease agreement (including any lease intended as security), whether or not such obligations are required to be capitalized on the balance sheet of such Person under generally accepted accounting
principles, or (Z) liabilities secured by any Lien on any property owned by such Person if and to the extent that such Person has not assumed or otherwise become liable for the payment thereof. 
 (C) “Lien” means any lien, mortgage, deed of trust, pledge or security interest, in each case, intended to secure the repayment
of Debt, except for any Permitted Lien. 
 (D) “Material Subsidiary” means PPL Global, LLC, a Delaware limited
liability company, PPL EnergyPlus, LLC, a Delaware limited liability company, or PPL Generation, LLC, a Delaware limited liability company. 
 (E) “Moody’s” means Moody’s Investors Service, Inc. and its successors and assigns, or absent a successor, or if such entity ceases to rate the Securities of Series
No.     , such other nationally recognized statistical rating organization as the Company may designate by notice to the Trustee. 
 (F) “Permitted Business” means a business that is the same or similar to the business of the Company or any Subsidiary as of the
date that Securities of Series No.      are first authenticated hereunder, or any business reasonably related thereto. 
 (G) “Permitted Liens” means 
 (i) any Liens existing at [date of execution and
delivery of this Supplemental Indenture]; 
  

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 (ii) any vendors’ Liens, purchase money Liens and other Liens on property at the
time of acquisition thereof by the Company and Liens to secure or provide for the construction or improvement of property provided that no such Lien shall extend to or cover any other property of the Company; 
 (iii) any Liens on cash or securities (other than limited liability company interests issued by any Material Subsidiary) on hand or in
banks or other financial institutions, deposit accounts and interests in general or limited partnerships; 
 (iv) any Liens on
the equity interest of any Subsidiary that is not a Material Subsidiary; 
 (v) any Liens on property or shares of capital
stock, or arising out of any Debt of any corporation existing at the time the corporation becomes or is merged or consolidated into the Company; 
 (vi) any Liens in connection with the issuance of tax-exempt industrial development or pollution control bonds or other similar bonds issued pursuant to Section 103(b) of the Internal Revenue Code of 1986, as
amended (or any successor provision), to finance all or any part of the purchase price of or the cost of constructing, equipping or improving property, provided that such Liens are limited to the property acquired or constructed or improved and to
substantially unimproved real property on which such construction or improvement is located; provided, further, that the Company may further secure all or any part of such purchase price or the cost of construction or improvement by an interest on
additional property of the Company only to the extent necessary for the construction, maintenance and operation of, and access to, such property so acquired or constructed or such improvement; 
 (vii) any Liens on contracts, leases and other agreements of whatsoever kind and nature; any Liens on contract rights, bills, notes and
other instruments; any Liens on revenues, income and earnings, accounts, accounts receivable and unbilled revenues, claims, credits, demands and judgments; any Liens on governmental and other licenses, permits, franchises, consents and allowances;
and any Liens on patents, patent licenses and other patent rights, patent applications, trade names, trademarks, copyrights, claims, credits, choses in action and other intangible property and general intangibles including, but not limited to,
computer software; 
 (viii) any Liens securing Debt which matures less than one year from the date of issuance or incurrence
thereof and is not extendible at the option of the issuer, and any refundings, refinancings and/or replacements of any such Debt by or with similar secured Debt; 
  

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 (ix) any Liens on automobiles, buses, trucks and other similar vehicles and movable
equipment; vessels, boats, barges and other marine equipment; airplanes, helicopters, aircraft engines and other flight equipment; parts, accessories and supplies used in connection with any of the foregoing; 
 (x) any Liens on furniture and furnishings, and computers, data processing, data storage, data transmission, telecommunications and other
equipment and facilities, equipment and apparatus, which, in any case, are used primarily for administrative or clerical purposes; 
 (xi) any Liens on property which is the subject of a lease agreement designating the Company as lessee and all right, title and interest of the Company in and to such property and in, to and under such lease agreement, whether or not such
lease agreement is intended as security; 
 (xii) other Liens securing Debt the principal amount of which does not exceed 10%
of the total assets of the Company and its consolidated Subsidiaries as shown on the Company’s most recent audited consolidated balance sheet; and 
 (xiii) any Liens granted in connection with extending, renewing, replacing or refinancing, in whole or in part, the Debt secured by liens described in the foregoing clauses (i) through (xii), to the extent of
such Debt so extended, renewed, replaced or refinanced. 
 (H) “S&P” means Standard & Poor’s
Ratings Services, a division of The McGraw Hill Companies, Inc. and its successors and assigns, or absent a successor, or if such entity ceases to rate the Securities of Series No. __, such other nationally recognized statistical rating
organization as the Company may designate by notice to the Trustee. 
 (I) “Subsidiary” means any corporation a
majority of the outstanding Voting Stock of which is owned, directly or indirectly, by the Company or by one or more other Subsidiaries of the Company. 
 (J) “Voting Stock” means stock (or other interests) of a corporation having voting power for the election of directors, managers or trustees thereof, whether at all times or only so long as no senior class
of stock has such voting power by reason of any contingency. 
 ARTICLE TWO 
 Miscellaneous Provisions 
 Section 1. This Supplemental Indenture
No.      is a supplement to the Original Indenture. As supplemented by this Supplemental Indenture No.     , the Indenture is in all respects ratified, approved and confirmed, and the Original
Indenture and this Supplemental Indenture No.      shall together constitute one and the same instrument. 
  

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 Section 2. The recitals contained in this Supplemental Indenture No.
     shall be taken as the statements of the Company and the Trustee assumes no responsibility for their correctness and makes no representations as to the validity or sufficiency of this Supplemental Indenture No.
    . 
 Section 3. This instrument may be executed in any number of counterparts, each of which so
executed shall be deemed to be an original, but all such counterparts shall together constitute but one and the same instrument. 
  

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 IN WITNESS WHEREOF, the parties hereto have caused this Supplemental Indenture No.
     to be duly executed, and their respective seals to be hereunto affixed and attested, all as of the day and year first written above. 
  

					
		 	PPL ENERGY SUPPLY, LLC
			
		 	By:	 	  

		 	Name:	 	
		 	Title:	 	
	 [SEAL]
	 		 	
			
	 ATTEST:
	 		 	
			
	  
	 		 	
		
		 	 JPMORGAN CHASE BANK, N.A.,
 as Trustee

			
		 	By:	 	  

		 	Name:	 	
		 	Title:	 	
	 [SEAL]
	 		 	
			
	 ATTEST:
	 		 	
			
	  
	 		 	

  

 10Officers Certificate

 EXHIBIT 4.22 
 OFFICER’S CERTIFICATE 
 (Under Section 301 of the Indenture of 
 PPL Energy Supply, LLC 
 The
undersigned                     ,
                     of PPL ENERGY SUPPLY, LLC (the “Company”), in accordance with Section 301 of the Indenture, dated
as of October 1, 2001, as heretofore supplemented (the “Indenture”, capitalized terms used herein and not defined herein having the meanings specified in the Indenture), of the Company to JPMorgan Chase Bank, N.A. (formerly known
as The Chase Manhattan Bank), as Trustee (the “Trustee”), does hereby establish for the series of Securities established in Supplemental Indenture No.     , dated as of
                         (the “Supplemental Indenture”), the following terms and characteristics (the lettered
clauses set forth below corresponding to the lettered clauses of Section 301 of the Indenture): 
 (a) the title of the Securities of
such series shall be “Senior Notes,     % Series due                         ”
(the “Notes”); 
 (b) the aggregate principal amount of Notes which may be authenticated and delivered under the Indenture shall be
limited to $            , except as contemplated in Section 301(b) and the last paragraph of Section 301 of the Indenture; 
 (c) interest on the Notes shall be payable as provided in the form of Note attached hereto and hereby authorized and approved; 
 (d) the date or dates on which the principal of the Notes shall be payable shall be as provided in the form of Note attached hereto and hereby authorized
and approved; [the Company shall not have the right to extend the Maturity of the Notes, as contemplated by Section 301(d) of the Indenture;] 
 (e) the Notes shall bear interest as provided in the form of Note attached hereto and hereby authorized and approved, and the Interest Payment Dates and Regular Record Dates shall be such dates as are specified in such form; [the Company
shall not have the right to extend any interest payment periods for the Notes, as contemplated by Sections 301(e) and 312 of the Indenture]; 

 (f) the Corporate Trust Office of the Trustee in New York, New York shall be the office or agency of the
Company at which the principal of and any premium and interest, on the Notes shall be payable, at which registration of transfer and exchange of Notes may be effected and at which notices and demands to or upon the Company in respect of the Notes
and the Indenture may be served; provided, however, that the Company reserves the right to change, by one or more Officer’s Certificates supplemental to this Officer’s Certificate, any such office or agency; and provided, further, that the
Company reserves the right to designate, by one or more Officer’s Certificates supplemental to this Officer’s Certificate, its principal office in Allentown, Pennsylvania, as any such office or agency; the Trustee shall be the Security
Registrar and Paying Agent for the Notes; provided, that the Company reserves the right, by one or more Officer’s Certificates supplemental to this Officer’s Certificate, to designate a different Security Registrar or a different or an
additional Paying Agent (which in each case, may be the Company or any Affiliate of the Company) and to remove any Security Registrar or Paying Agent; 
 (g) the Notes shall be redeemable, in whole or in part, at the option of the Company as and to the extent provided in the form of Note attached hereto and hereby authorized and approved; 
 (h) [not applicable]; 
 (i) the Notes shall be
issued in denominations of $1,000 or any amount in excess thereof that is an integral multiple of $1,000, unless otherwise authorized by the Company; 
 (j) [not applicable]; 
 (k) [not applicable]; 
 (l) [not applicable]; 
 (m) [not applicable];
[see clause (e) with respect to the interest rate or rates on the Notes;] 
 (n) [not applicable]; 
 (o) reference is hereby made to the provisions of Supplemental Indenture No.      for an Event of Default in addition to those
specified in Section 801 of the Indenture, and for certain covenants of the Company for the benefit of the Holders of the Notes; 
 (p)
[not applicable]; 
 (q) the only obligations or instruments which shall be considered Eligible Obligations in respect of the Notes shall be
Government Obligations; and the provisions of Section 701 of the Indenture and Section 2 of Article One of the Supplemental Indenture shall apply to the Notes; 
  

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 (r) [the Notes may be issued in global form (the “Global Notes”) and the depository for the
Global Notes shall initially be The Depository Trust Company (“DTC”); provided, that the Company reserves the right to provide for another depository, registered as a clearing agency under the Exchange Act, to act as depository for the
Global Notes (DTC and any such successor depository, the “Depositary”); beneficial interests in Notes issued in global form may not be exchanged in whole or in part for individual certificated Notes in definitive form, and no transfer of a
Global Note in whole or in part may be registered in the name of any Person other than the Depositary or its nominee except that if the Depositary (A) has notified the Company that it is unwilling or unable to continue as depository for the
Global Notes or (B) has ceased to be a clearing agency registered under the Exchange Act and, in either case, a successor depository is not appointed by the Company within 90 days after such notice or cessation, the Company will execute, and
the Trustee, upon receipt of a Company Order for the authentication and delivery of definitive Notes, will authenticate and deliver Notes in definitive certificated form in an aggregate principal amount equal to the principal amount of the Global
Note representing such Notes in exchange for such Global Note, such definitive Notes to be registered in the names provided by the Depositary; each Global Note (i) shall represent and shall be denominated in an amount equal to the aggregate
principal amount of the outstanding Notes to be represented by such Global Note, (ii) shall be registered in the name of the Depositary or its nominee, (iii) shall be delivered by the Trustee to the Depositary, its nominee, any custodian
for the Depositary or otherwise pursuant to the Depositary’s instruction and (iv) shall bear a legend restricting the transfer of such Global Note to any person other than the Depositary or its nominee; none of the Company, the Trustee,
any Paying Agent or any Authenticating Agent will have any responsibility or liability for any aspect of the records relating to, or payments made on account of, beneficial ownership interests in a Global Note or for maintaining, supervising or
reviewing any records relating to such beneficial ownership interests]; 
 (s) [not applicable]; 
 (t) reference is made to clause (r) above; no service charge shall be made for the registration of transfer or exchange of Notes; provided, however,
that the Company may require payment of a sum sufficient to cover any tax or other governmental charge payable in connection with the exchange or transfer; 
 (u) [not applicable]; 
 (v) except as otherwise determined by the proper officers of the Company and
communicated to the Trustee in a Company Order or as established in one or more Officers’ Certificates supplemental to this Officers’ Certificate, the Notes shall be substantially in the form of Note attached hereto and hereby authorized
and approved and shall have such further terms as are set forth in such form; and 
 (w) [other provisions, if any]. 
 IN WITNESS WHEREOF, I have hereunto signed my name this      day of
                        . 
  

	
	 PPL ENERGY SUPPLY, LLC

	
	  

	 Name:

	 Title:

  

 3 

 [FORM OF NOTE] 
 UNLESS THIS CERTIFICATE IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY TRUST COMPANY, A NEW YORK CORPORATION (“DTC”) TO THE ISSUER OR ITS AGENT FOR REGISTRATION OF TRANSFER, EXCHANGE OR
PAYMENT, AND ANY CERTIFICATE TO BE ISSUED IS REGISTERED IN THE NAME OF CEDE & CO. OR IN SUCH OTHER NAME AS IS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF DTC (AND ANY PAYMENT IS MADE TO CEDE & CO. OR SUCH OTHER ENTITY AS IS
REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF DTC), ANY TRANSFER, PLEDGE OR OTHER USE HEREOF FOR VALUE OR OTHERWISE BY OR TO ANY PERSON IS WRONGFUL INASMUCH AS THE REGISTERED OWNER HEREOF, CEDE & CO., HAS AN INTEREST HEREIN. 

PPL ENERGY SUPPLY, LLC 
 Senior
Note,     % Series              
  

			
	Original Issue Date:	  	[Redeemable:    Yes   ̈    No   ̈]
		
	Stated Maturity:	  	[Initial Redemption Date:]
		
	Interest Rate:	  	[ Initial Redemption Price:]
		
	Interest Payment Dates:	  	[Annual Redemption Percentage Reduction:     %]
		
	First Interest Payment Date:	  	[Repayable at Option of the Holder:    Yes   ̈    No   ̈  ]
		
	Regular Record Dates:	  	[Optional Repayment Date(s):]
		
	Issue Price (    %):	  	[Repayment Price:     %]
		
		  	Other/Additional Provisions:

 This Security is not a Discount Security within 
 the meaning of the within-mentioned Indenture 
  

					
	Principal Amount	  	No. [    ]	 	
	$[            ]	  	CUSIP [    ]	 	

 PPL ENERGY SUPPLY, LLC, a limited liability company duly organized and existing under the laws of
the State of Delaware (herein called the “Company,” which term includes any successor under the Indenture referred to below), for value received, hereby promises to pay to
[            ], or registered assigns, the principal sum of [                    ]
($[            ]) on the Stated Maturity specified above, and to pay interest thereon from the Original Issue Date specified above or from the most recent Interest Payment Date to which
interest has been paid or duly provided for, [semi-annually] in arrears on the Interest Payment Dates specified above in each year, commencing
[                         ], and at Maturity, at the Interest Rate per annum specified above, until the principal hereof is paid
or duly provided for. The interest so payable, and paid or duly provided for, on any Interest Payment Date shall, as provided in such Indenture, be paid to the Person in whose name this Security (or one or more Predecessor Securities) is registered
at the close of business on the Regular Record Date specified above (whether or not a Business Day) next preceding such Interest Payment Date. Notwithstanding the foregoing, interest payable at Maturity shall be paid to the Person to whom principal
shall be paid. Except as otherwise provided in said Indenture, any such interest not so paid or duly provided for shall forthwith cease to be payable to the Holder on such Regular Record Date and may either be paid to the Person in whose name this
Security (or one or 

 
more Predecessor Securities) is registered at the close of business on a Special Record Date for the payment of such Defaulted Interest to be fixed by the
Trustee, notice of which shall be given to Holders of Securities of this series not less than 10 days prior to such Special Record Date, or be paid at any time in any other lawful manner not inconsistent with the requirements of any securities
exchange on which the Securities of this series may be listed, and upon such notice as may be required by such exchange, all as more fully provided in said Indenture. Interest on this Security shall be computed on the basis of a 360-day year
consisting of twelve 30-day months, and with respect to any period less than a full calendar month, on the basis of actual days elapsed during such period. 
 [Insert provisions, if any, relating to alternative interest rate formula.] 
 Payment of the principal of
and premium, if any, on this Security and interest hereon at Maturity shall be made upon presentation of this Security at the corporate trust office of JPMorgan Chase Bank, N.A. in New York, New York or at such other office or agency as may be
designated for such purpose by the Company from time to time. Payment of interest, if any, on this Security (other than interest at Maturity) shall be made by check mailed to the address of the Person entitled thereto as such address shall appear in
the Security Register, except that (a) if such Person shall be a securities depositary, such payment may be made by such other means in lieu of check as shall be agreed upon by the Company, the Trustee or other Paying Agent and such Person and
(b) if such Person is a Holder of $10,000,000 or more in aggregate principal amount of Securities of this series such payment may be in immediately available funds by wire transfer to such account as may have been designated in writing by the
Person entitled thereto as set forth herein in time for the Paying Agent to make such payments in accordance with its normal procedures. Any such designation for wire transfer purposes shall be made by filing the appropriate information with the
Trustee at its Corporate Trust Office in The City of New York not less than fifteen calendar days prior to the applicable payment date and, unless revoked by written notice to the Trustee received on or prior to the Regular Record Date immediately
preceding the applicable Interest Payment Date, shall remain in effect with respect to any further interest payments (other than interest payments at Maturity) with respect to this Security payable to such Holder. Payment of the principal of and
premium, if any, and interest, if any, on this Security, as aforesaid, shall be made in such coin or currency of the United States of America as at the time of payment shall be legal tender for the payment of public and private debts. 
 This Security is one of a duly authorized issue of securities of the Company (herein called the “Securities”), issued and issuable in one or
more series under an Indenture, dated as of October 1, 2001 (such Indenture as originally executed and delivered and as supplemented or amended from time to time thereafter, together with any constituent instruments establishing the terms of
particular Securities, being herein called the “Indenture”), between the Company and JPMorgan Chase Bank, N.A. (formerly known as The Chase Manhattan Bank), as Trustee (herein called the “Trustee,” which term includes any
successor trustee under the Indenture), to which Indenture and all indentures supplemental thereto reference is hereby made for a description of the respective rights, limitations of rights, duties and immunities of the Company, the Trustee and the
Holders of the Securities thereunder and of the terms and conditions upon which the Securities are, and are to be, authenticated and delivered. The acceptance of this Security shall be deemed to constitute the consent and agreement by the Holder
hereof to all of the terms and provisions of the Indenture. This Security is one of the series designated above. 
 If any Interest Payment
Date, any Redemption Date, any Optional Repayment Date or the Stated Maturity shall not be a Business Day (as hereinafter defined), payment of the amounts due on this Security on such date may be made on the next succeeding Business Day, and, if
such payment is made or duly provided for on such next succeeding Business Day, no interest shall accrue on such amounts for the period from and after such Interest Payment Date, Redemption Date, Optional Repayment Date or Stated Maturity, as the
case may be, to such Business Day. 
  

 2 

 [If, as specified above, this Security is redeemable, this Security is subject to redemption at any time
on or after the Initial Redemption Date specified above, in whole or in part in increments of $1,000, at the election of the Company, at the applicable redemption price (as described below) plus accrued interest to the date fixed for redemption.
Such redemption price shall be the Initial Redemption Price specified above for the twelve-month period commencing on the Initial Redemption Date and shall decline for the twelve-month period commencing on each anniversary of the Initial Redemption
Date by a percentage of principal amount equal to the Annual Redemption Percentage Reduction specified above until such redemption price is 100% of the principal amount of this Security to be redeemed.] 
 [Insert provisions, if any, for redemption pursuant to a sinking fund or other mandatory redemption or purchase provisions or other put or call
provisions.] 
 Notice of redemption (other than at the option of the Holder) shall be given by mail to Holders of Securities, not less than
30 days nor more than 60 days prior to the date fixed for redemption, all as provided in the Indenture. As provided in the Indenture, notice of redemption at the election of the Company as aforesaid may state that such redemption shall be
conditional upon the receipt by the applicable Paying Agent or Agents of money sufficient to pay the principal of and premium, if any, and interest, if any, on this Security on or prior to the date fixed for such redemption; a notice of redemption
so conditioned shall be of no force or effect if such money is not so received and, in such event, the Company shall not be required to redeem this Security. 
 In the event of redemption of this Security in part only, a new Security or Securities of this series, of like tenor, representing the unredeemed portion hereof shall be issued in the name of the Holder hereof upon
the cancellation hereof. 
 [If this Security is specified on the face hereof to be repayable at the option of the Holder, this Security will
be so repaid in whole or in part in increments of $1,000, provided that the remaining principal amount of any Security surrendered for partial repayment shall be at least $1,000, on any Optional Repayment Date (as stated on the face hereof), at the
option of the Holder, at 100% of the principal amount to be repaid, plus accrued interest, if any, to the repayment date. In order for the exercise of the option to be effective and the Security to be repaid, the Company must receive at the
applicable address of the Trustee set forth below, or at such other place or places of which the Company shall from time to time notify the Holder of this Security, on or before the thirtieth, but not earlier than the sixtieth calendar day, or, if
such day is not a Business Day, the next succeeding Business Day, prior to the repayment date, either (i) this Security, with the form below entitled “Option to Elect Repayment” duly completed, or (ii) a telegram, telex,
facsimile transmission, or letter from a member of a national securities exchange or the National Association of Securities Dealers, Inc. or a commercial bank or a trust company in the United States of America setting forth (a) the name,
address, and telephone number of the Holder of this Security, (b) the principal amount of this Security and the amount of this Security to be repaid, (c) a statement that the option to elect repayment is being exercised thereby, and
(d) a guarantee stating that the Trustee on behalf of the Company will receive this Security, with the form below entitled “Option to Elect Repayment” duly completed, not later than five Business Days after the date of such telegram,
telex, facsimile transmission, or letter (and this Security and form duly completed are received by the Trustee on behalf of the Company by such fifth Business Day). Any such election shall be irrevocable. The address to which such deliveries are to
be made is JPMorgan Chase Bank, N.A., Attention: Worldwide Securities Services, 4 New York Plaza, New York, New York 10004 (or, at such other places as the Company shall notify the Holders of the Securities). All questions as to the validity,
eligibility (including time of receipt) and acceptance of any Security for repayment will be determined by the Company, whose determination will be final and binding.] 
  

 3 

 If an Event of Default with respect to the Securities of this series shall occur and be continuing, the
principal of this Security may be declared due and payable in the manner and with the effect provided in the Indenture. 
 The Indenture
permits, with certain exceptions as therein provided, the Trustee to enter into one or more supplemental indentures for the purpose of adding any provisions to, or changing in any manner or eliminating any of the provisions of, the Indenture with
the consent of the Holders of not less than a majority in aggregate principal amount of the Securities of all series then Outstanding under the Indenture, considered as one class; provided, however, that if there shall be Securities of
more than one series Outstanding under the Indenture and if a proposed supplemental indenture shall directly affect the rights of the Holders of Securities of one or more, but less than all, of such series, then the consent only of the Holders of a
majority in aggregate principal amount of the Outstanding Securities of all series so directly affected, considered as one class, shall be required; and provided, further, that if the Securities of any series shall have been issued in
more than one Tranche and if the proposed supplemental indenture shall directly affect the rights of the Holders of Securities of one or more, but less than all, of such Tranches, then the consent only of the Holders of a majority in aggregate
principal amount of the Outstanding Securities of all Tranches so directly affected, considered as one class, shall be required; and provided, further, that the Indenture permits the Trustee to enter into one or more supplemental
indentures for limited purposes without the consent of any Holders of Securities. The Indenture also contains provisions permitting the Holders of a majority in principal amount of the Securities then Outstanding, on behalf of the Holders of all
Securities, to waive compliance by the Company with certain provisions of the Indenture and certain past defaults under the Indenture and their consequences. Any such consent or waiver by the Holder of this Security shall be conclusive and binding
upon such Holder and upon all future Holders of this Security and of any Security issued upon the registration of transfer hereof or in exchange therefor or in lieu hereof, whether or not notation of such consent or waiver is made upon this
Security. 
 No reference herein to the Indenture and no provision of this Security or of the Indenture shall alter or impair the obligation
of the Company, which is absolute and unconditional, to pay the principal of and premium, if any, and interest, if any, on this Security at the times, place and rate, in the coin or currency, and in the manner, herein prescribed. 
 As provided in the Indenture and subject to certain limitations therein and herein set forth, this Security or any portion of the principal amount hereof
will be deemed to have been paid for all purposes of the Indenture and to be no longer Outstanding thereunder, and, at the election of the Company, the Company’s entire indebtedness in respect thereof will be satisfied and discharged, if there
has been irrevocably deposited with the Trustee or any Paying Agent (other than the Company), in trust, money in an amount which will be sufficient and/or Eligible Obligations, the principal of and interest on which when due, without any regard to
reinvestment thereof, will provide moneys which, together with moneys so deposited, will be sufficient to pay when due the principal of and premium, if any, and interest, if any, on this Security when due. 
 The Indenture contains terms, provisions and conditions relating to the consolidation or merger of the Company with or into, and the conveyance or other
transfer, or lease, of assets to, another Person, to the assumption by such other Person, in certain circumstances, of all of the obligations of the Company under the Indenture and on the Securities and to the release and discharge of the Company in
certain circumstances, from such obligations. 
 As provided in the Indenture and subject to certain limitations therein set forth, the
transfer of this Security is registrable in the Security Register, upon surrender of this Security for registration of transfer at the office of JPMorgan Chase Bank, N.A. in New York, New York or such other office or agency as 

  

 4 

 
may be designated by the Company from time to time, duly endorsed by, or accompanied by a written instrument of transfer in form satisfactory to the Company
and the Security Registrar duly executed by, the Holder hereof or his attorney duly authorized in writing, and thereupon one or more new Securities of this series of authorized denominations and of like tenor and aggregate principal amount, will be
issued to the designated transferee or transferees. 
 The Securities of this series are issuable only as registered Securities, without
coupons, and in denominations of $1,000 and integral multiples thereof. As provided in the Indenture and subject to certain limitations therein set forth, Securities of this series are exchangeable for a like aggregate principal amount of Securities
of the same series and Tranche, of any authorized denominations, as requested by the Holder surrendering the same, and of like tenor upon surrender of the Security or Securities to be exchanged at the office of JPMorgan Chase Bank, N.A. in New York,
New York or such other office or agency as may be designated by the Company from time to time. 
 The Company shall not be required to
execute and the Security Registrar shall not be required to register the transfer of or exchange of (a) Securities of this series during a period of 15 days immediately preceding the date notice is given identifying the serial numbers of the
Securities of this series called for redemption or (b) any Security so selected for redemption in whole or in part, except the unredeemed portion of any Security being redeemed in part. 
 No service charge shall be made for any such registration of transfer or exchange, but the Company may require payment of a sum sufficient to cover any
tax or other governmental charge payable in connection therewith. 
 Prior to due presentment of this Security for registration of transfer,
the Company, the Trustee and any agent of the Company or the Trustee may treat the Person in whose name this Security is registered as the absolute owner hereof for all purposes (subject to Sections 305 and 307 of the Indenture), whether or not this
Security be overdue, and neither the Company, the Trustee nor any such agent shall be affected by notice to the contrary. 
 The Indenture
and the Securities shall be governed by and construed in accordance with the laws of the State of New York (including, without limitation, Section 5-1401 of the New York General Obligations Law or any successor to such statute), except to the
extent that the Trust Indenture Act shall be applicable. 
 As used herein, “Business Day” means any day, other than a Saturday or
Sunday, that is not a day on which banking institutions or trust companies are generally authorized or required by law, regulation or executive order to close in The City of New York or other city in which is located any Paying Agent for the
Securities of this series. All other terms used in this Security which are defined in the Indenture shall have the meanings assigned to them in the Indenture. 
 As provided in the Indenture, no recourse shall be had for the payment of the principal of or premium, if any, or interest on any Securities or any part thereof, or for any claim based thereon or otherwise in respect
thereof, or of the indebtedness represented thereby, or upon any obligation, covenant or agreement under the Indenture, against, and no personal liability whatsoever shall attach to, or be incurred by, any member, officer, director or manager, as
such, past, present or future of the Company or of any predecessor or successor of the Company (either directly or through the Company or a predecessor or successor of the Company), whether by virtue of any constitutional provision, statute or rule
of law, or by the enforcement of any assessment or penalty or otherwise; it being expressly agreed and understood that the Indenture and this Security are solely obligations of the Company and that any such personal liability is hereby expressly
waived and released as a condition of, and as part of the consideration for, the execution of the Indenture and the issuance of this Security. 
 Unless the certificate of authentication hereon has been executed by the Trustee or an Authenticating Agent by manual signature, this Security shall not be entitled to any benefit under the Indenture or be valid or obligatory for any
purpose. 
  

 5 

 IN WITNESS WHEREOF, the Company has caused this instrument to be duly executed under its corporate seal.

  

									
	 	 	 	 	 	 	PPL ENERGY SUPPLY, LLC
				
	[SEAL]	 		 	By:	 	  

		 		 		 		 	Treasurer
	Attested:	 		 		 	
					
	By:	 	  
	 		 		 	
		 	Secretary	 		 		 	

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

											
	 Dated:
	 	  
	 		 	 JPMORGAN CHASE BANK, N.A.,
 as
Trustee

				
		 		 	By:	 	  

		 		 		 		 		 	Authorized Officer

  

 6 

 OPTION TO ELECT REPAYMENT 
 [TO BE COMPLETED ONLY IF THIS NOTE IS REPAYABLE 
 AT THE OPTION OF THE HOLDER AND THE HOLDER 
 ELECTS TO EXERCISE SUCH RIGHTS] 
 The undersigned hereby
irrevocably requests and instructs the Company to repay the within Security (or portion thereof specified below) pursuant to its terms at a price equal to the principal amount thereof, together with interest to the repayment date, to the
undersigned, at 
 (Please print or type name and address of the undersigned) 
 For this Security to be repaid the Company must receive at the Corporate Trust Office of the Trustee in The City of New York or at such other place or places of which the Company shall from time to time notify the
Holder of the within Security, on or before the thirtieth, but not earlier than the sixtieth, calendar day, or, if such day is not a Business Day, the next succeeding Business Day, prior to the repayment date, (i) this Security, with this
“Option to Elect Repayment” form duly completed, or (ii) a telegram, telex, facsimile transmission, or letter from a member of a national securities exchange or the National Association of Securities Dealers, Inc. or a commercial bank
or a trust company in the United States of America setting forth (a) the name, address, and telephone number of the Holder of the Security, (b) the principal amount of the Security and the amount of the Security to be repaid, (c) a
statement that the option to elect repayment is being exercised thereby, and (d) a guarantee stating that the Security to be repaid with this form duly completed will be received by the Trustee on behalf of the Company not later than five
Business Days after the date of such telegram, telex, facsimile transmission, or letter (and such Security and form duly completed are received by the Trustee on behalf of the Company by such fifth Business Day). Exercise of the repayment option by
the Holder shall be irrevocable. 
 If less than the entire principal amount of the within Security is to be repaid, specify the portion thereof (which shall
be an integral multiple of $1,000) which the Holder elects to have repaid: ;
                                 and specify the denomination or denominations
(which shall be $1,000 or an integral multiple thereof) of the Security or Securities to be issued to the Holder for the portion of the within Security or Securities not being repaid (in the absence of any specification, one such Security will be
issued for the portion not being repaid): 
  

							
		 		 	Date:	 	  

				
	  
	 		 		 	
	Notice: The signature to this Option to Elect Repayment must correspond with the name as written upon the face of the Security in every particular without alteration or enlargement or any other
change whatsoever	 		 		 	.

  

 7 

 FOR VALUE RECEIVED the undersigned hereby sells, assigns and transfers unto 
  
  

 [please insert social security or other identifying number of assignee] 
  
  

 [please print or typewrite name and
address of assignee] 
  
  

 the within Security of PPL ENERGY SUPPLY, LLC and does hereby irrevocably constitute and appoint
                                , Attorney, to transfer said Security on
the books of the within-mentioned Company, with full power of substitution in the premises. 
 Dated:
                                        

 Notice: The signature to this assignment must correspond with the name as written upon the face of the Security in every particular without alteration or
enlargement or any change whatsoever. 
  

 8

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