Document:

Eighth Supplemental Indenture

 Exhibit 4.2 
 EIGHTH SUPPLEMENTAL INDENTURE 
 Eighth Supplemental Indenture (this
“Supplemental Indenture”), dated as of January 25, 2013, among Energy Future Holdings Corp., a Texas corporation (the “Company”), Energy Future Intermediate Holding Company LLC, a Delaware limited liability
company (“EFIH”), Energy Future Competitive Holdings Company, a Texas corporation (together with EFIH, the “Guarantors”), and The Bank of New York Mellon Trust Company, N.A., a national banking association, as
Trustee (the “Trustee”). 
 W I T N E S S E T H 

WHEREAS, the Company and the Guarantors have heretofore executed and delivered to the Trustee an Indenture, dated as of January 12,
2010, as supplemented by the First Supplemental Indenture, dated as of March 16, 2010, the Second Supplemental Indenture, dated as of April 13, 2010, the Third Supplemental Indenture, dated as of April 14, 2010, the Fourth
Supplemental Indenture, dated as of May 21, 2010, the Fifth Supplemental Indenture, dated as of July 2, 2010, the Sixth Supplemental Indenture, dated as of July 6, 2010 and the Seventh Supplemental Indenture, dated as of July 7,
2010 (as so supplemented, the “Indenture”), providing for the issuance of the Company’s 10.000% Senior Secured Notes due 2020 (the “Notes”); 

WHEREAS, Section 9.02 of the Indenture provides that, (i) with the consent of the Holders of at least a
majority in aggregate principal amount of the Notes then outstanding voting as a single class, the Company, the Guarantors and the Trustee may amend or supplement the Indenture and the Notes, and (ii) with the consent of the Holders of at least
66 2/3% in aggregate principal amount of the Notes then outstanding voting as a single class, the Company, the Guarantors and the Trustee may amend or supplement the Security Documents relating to the Notes and
the provisions of the Indenture to modify such documents to release all or substantially all of the Collateral securing the Notes; 
 WHEREAS, the Company has solicited consents upon the terms and subject to the conditions set forth in the offering memorandum and consent solicitation statement dated December 21, 2012 (the
“Offering Memorandum”) and in the related Consent and Letter of Transmittal from each Holder of the Notes to the amendments to the Indenture set forth below in Article Two, Article Three, Article Four, Article Five, Article Six,
Article Seven, Article Eight, Article Nine, Article Ten, Article Eleven and Article Twelve of this Supplemental Indenture (the “Proposed Amendments”); 
 WHEREAS, the Company has received the consents from Holders of approximately 99.71% in aggregate principal amount of the outstanding Notes to the Proposed Amendments; 

WHEREAS, the Company has delivered to the Trustee an Officer’s Certificate as well as an Opinion of Counsel to the effect that the
execution of this Supplemental Indenture is authorized or permitted under the Indenture and that all conditions precedent and covenants provided for in the Indenture relating to the execution and delivery of this Supplemental Indenture have been
satisfied and complied with; 

 WHEREAS, the Board of Directors of the Company has authorized the execution of this
Supplemental Indenture; 
 WHEREAS, all conditions necessary to authorize the execution and delivery of this Supplemental
Indenture by the Company and the Guarantors and to make this Supplemental Indenture valid and binding on the Company and the Guarantors have been complied with or have been done or performed; and 

WHEREAS, pursuant to Sections 9.02 and 9.06 of the Indenture, the Trustee is authorized to execute and deliver this Supplemental
Indenture. 
 NOW THEREFORE, in consideration of the foregoing and for other good and valuable consideration, the receipt of
which is hereby acknowledged, the parties mutually covenant and agree for the equal and ratable benefit of the Holders of the Notes as follows: 
 ARTICLE ONE 
 SECTION 1.01. CAPITALIZED TERMS.
Capitalized terms used herein without definition shall have the meanings assigned to them in the Indenture. 
 ARTICLE TWO

 SECTION 2.01. AMENDMENT TO THE TABLE OF
CONTENTS. The Table of Contents of the Indenture is amended by deleting the titles to Sections 4.05, 4.06, 4.07, 4.08, 4.09, 4.10, 4.11, 4.12, 4.13, 4.14, 4.15, 4.16, 4.17, 4.18, 4.19, 4.20, 4.21, 10.01, 10.02, 10.03, 10.04, 10.05,
10.06, 10.07, 10.08, 10.09, 10.10, 10.11, 10.12 and 10.13 and Exhibits E and F and inserting in lieu thereof the phrase “[intentionally omitted]”. 
 ARTICLE THREE 
 SECTION 3.01. AMENDMENT TO
CERTAIN PROVISIONS IN ARTICLE 1. Section 1.01 of the Indenture is amended by deleting the definition of “Unrestricted Subsidiary” in its entirety and inserting in lieu
thereof the following text: 
 ““Unrestricted Subsidiary” means: 

 

	 	(1)	each of the Oncor Subsidiaries, Comanche Peak Nuclear Power Company, Nuclear Energy Future Holdings LLC, Nuclear Energy Future Holdings II LLC, EFCH and EFIH;

  

	 	(2)	any Subsidiary of the Issuer which at the time of determination is an Unrestricted Subsidiary (as designated or identified by the Issuer); and 

 

	 	(3)	any Subsidiary of an Unrestricted Subsidiary. 

 The Issuer may designate any Subsidiary of the Issuer (including any existing Subsidiary and any newly acquired or newly formed Subsidiary) to be an Unrestricted Subsidiary.” 

  
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 ARTICLE FOUR 
 SECTION 4.01. AMENDMENT TO AND ELIMINATION OF CERTAIN PROVISIONS IN
ARTICLE 4. 
 (a) Section 4.03 (Reports and Other Information) of the Indenture is amended by deleting the
text of that section in its entirety and inserting in lieu thereof the following text: 
 “Notwithstanding that the Issuer
may not be subject to the reporting requirements of Section 13 or 15(d) of the Exchange Act or otherwise report on an annual and quarterly basis on forms provided for such annual and quarterly reporting pursuant to rules and regulations
promulgated by the SEC, the Issuer shall comply with the reporting obligations set forth under Section 314(a) of the Trust Indenture Act.” 
 (b) Section 4.05 (Taxes) of the Indenture is amended by deleting it in its entirety and inserting in lieu thereof the phrase “[intentionally omitted]”. 

(c) Section 4.06 (Stay, Extension and Usury Laws) of the Indenture is amended by deleting it in its entirety and inserting in lieu
thereof the phrase “[intentionally omitted]”. 
 (d) Section 4.07 (Limitation on Restricted Payments) of the
Indenture is amended by deleting it in its entirety and inserting in lieu thereof the phrase “[intentionally omitted]”. 
 (e) Section 4.08 (Dividend and Other Payment Restrictions Affecting Restricted Subsidiaries) of the Indenture is amended by deleting it in its entirety and inserting in lieu thereof the phrase
“[intentionally omitted]”. 
 (f) Section 4.09 (Limitation on Incurrence of Indebtedness and Issuance of
Disqualified Stock and Preferred Stock) of the Indenture is amended by deleting it in its entirety and inserting in lieu thereof the phrase “[intentionally omitted]”. 

(g) Section 4.10 (Asset Sales) of the Indenture is amended by deleting it in its entirety and inserting in lieu thereof the phrase
“[intentionally omitted]”. 
 (h) Section 4.11 (Transactions with Affiliates) of the Indenture is amended by
deleting it in its entirety and inserting in lieu thereof the phrase “[intentionally omitted]”. 
 (i)
Section 4.12 (Liens) of the Indenture is amended by deleting it in its entirety and inserting in lieu thereof the phrase “[intentionally omitted]”. 
 (j) Section 4.13 (Corporate Existence) of the Indenture is amended by deleting it in its entirety and inserting in lieu thereof the phrase “[intentionally omitted]”. 

  
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 (k) Section 4.14 (Offer to Repurchase upon Change of Control) of the Indenture is
amended by deleting it in its entirety and inserting in lieu thereof the phrase “[intentionally omitted]”. 
 (l)
Section 4.15 (Limitation on Guarantees of Indebtedness by Restricted Subsidiaries) of the Indenture is amended by deleting it in its entirety and inserting in lieu thereof the phrase “[intentionally omitted]”. 

(m) Section 4.16 (Restrictions on Permitted Asset Transfers) of the Indenture is amended by deleting it in its entirety and
inserting in lieu thereof the phrase “[intentionally omitted]”. 
 (n) Section 4.17 (Restrictions on TCEH
Transfers) of the Indenture is amended by deleting it in its entirety and inserting in lieu thereof the phrase “[intentionally omitted]”. 
 (o) Section 4.18 (Restrictions on Certain Investments in Oncor Subsidiaries and the Collateral) of the Indenture is amended by deleting it in its entirety and inserting in lieu thereof the phrase
“[intentionally omitted]”. 
 (p) Section 4.19 (After-Acquired Property) of the Indenture is amended by deleting
it in its entirety and inserting in lieu thereof the phrase “[intentionally omitted]”. 
 (q) Section 4.20
(Impairment of Security Interest) of the Indenture is amended by deleting it in its entirety and inserting in lieu thereof the phrase “[intentionally omitted]”. 
 (r) Section 4.21 (Further Assurances) of the Indenture is amended by deleting it in its entirety and inserting in lieu thereof the phrase “[intentionally omitted]”. 

ARTICLE FIVE 

SECTION 5.01. AMENDMENT TO AND ELIMINATION OF
CERTAIN PROVISIONS IN ARTICLE 5. Section 5.01(Merger, Consolidation or Sale of All or Substantially All Assets) of the Indenture is amended by: 

(a) deleting the text of clauses (3), (4) and (6) (including the proviso and the following text that appear after clause (6):
“provided, that for the purposes of this Section 5.01 only, neither (A) the first to occur of a Permitted Asset Transfer or a TCEH Transfer (excluding a Permitted Asset Transfer consisting of a merger of EFIH with and into the Issuer
for the purpose of determining the first to occur of a Permitted Asset Transfer or a TCEH Transfer) nor (B) a transaction meeting the requirements of the proviso to clause (3) under the definition of “Change of Control” shall be
deemed to be a sale, assignment, transfer, conveyance or other disposition of all or substantially all of the properties or assets of the Issuer and its Subsidiaries under this Indenture. For the avoidance of doubt, (1) the Issuer may therefore
consummate the first to occur of a Permitted Asset Transfer made in accordance with Section 4.16 hereof and a TCEH Transfer made in accordance with Section 4.17 hereof, in either case, without complying with this Section 5.01
(excluding a Permitted Asset Transfer consisting of a merger of EFIH with and into the Issuer for the purpose of determining the first to occur of a Permitted Asset Transfer 

  
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or a TCEH Transfer), (2) the Issuer or any of its Restricted Subsidiaries may consummate a transaction meeting the requirements of the proviso to clause (3) under the definition of
“Change of Control” without complying with this Section 5.01 and (3) the determination in the preceding proviso shall not affect the determination of what constitutes all or substantially all the assets of the Issuer and its
Subsidiaries under any other agreement to which the Issuer is a party.”) of Section 5.01(a) in their entirety and inserting in lieu thereof the phrase “[intentionally omitted]”; 

(b) adding the following new sentence at the end of subsection (a): “It shall be understood that for purposes of the first sentence
of this Section 5.01(a) only, (i) a Permitted Asset Transfer shall not constitute the consolidation, merger, wind-up, sale, assignment, transfer, lease conveyance or other disposal of all or substantially all of the properties and assets
of the Issuer and, accordingly, the Issuer may consummate a Permitted Asset Transfer without being subject to the requirements of this Section 5.01 and (ii) a TCEH Transfer shall constitute the consolidation, merger, wind-up, sale,
assignment, transfer, lease conveyance or other disposal of all or substantially all of the properties and assets of the Issuer and, accordingly, if the Issuer consummates a TCEH Transfer, it must comply with the requirements of this
Section 5.01.”; 
 (c) deleting the words “made in accordance with Section 4.16 hereof” where they
appear in subsection (c); 
 (d) deleting the text of subsection (d) in its entirety and inserting in lieu thereof the
phrase “[intentionally omitted]”; and 
 (e) deleting the words “made in accordance with Section 4.16
hereof” where they appear in subsection (e). 
 ARTICLE SIX 

SECTION 6.01. AMENDMENT TO AND ELIMINATION OF
CERTAIN PROVISIONS IN ARTICLE 6. Section 6.01 (Events of Default) of the Indenture is amended by: 
 (a) deleting the text of clauses (3), (4), (5), (8) and (9) of Section 6.01(a) in their entirety and inserting in lieu thereof the phrase “[intentionally omitted]”; and

 (b) deleting the words “or any Significant Subsidiary (or any group of Restricted Subsidiaries that together would
constitute a Significant Subsidiary)” in each instance where they appear in clauses (6) and (7) of Section 6.01(a). 
 ARTICLE SEVEN 
 SECTION 7.01. AMENDMENT TO
AND ELIMINATION OF CERTAIN PROVISIONS IN ARTICLE 8. Section 8.04 (Conditions to Legal or Covenant Defeasance) of the Indenture is amended
by deleting clauses (2), (3), (4), (5), (6), (7) and (8) of such Section 8.04 in their entirety and inserting in lieu thereof the phrase “[intentionally omitted]”. 

  
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 ARTICLE EIGHT 
 SECTION 8.01. ELIMINATION OF ARTICLE 10. 
 (a) Section 10.01 (Equal and Ratable Sharing of Collateral by Holders of Parity Lien Debt) of the Indenture is amended by deleting it in its entirety and inserting in lieu thereof the phrase
“[intentionally omitted]”. 
 (b) Section 10.02 (Ranking of Parity Liens) of the Indenture is amended by deleting
it in its entirety and inserting in lieu thereof the phrase “[intentionally omitted]”. 
 (c) Section 10.03
(Relative Rights) of the Indenture is amended by deleting it in its entirety and inserting in lieu thereof the phrase “[intentionally omitted]”. 
 (d) Section 10.04 (Security Documents) of the Indenture is amended by deleting it in its entirety and inserting in lieu thereof the phrase “[intentionally omitted]”. 

(e) Section 10.05 (Recording and Opinions) of the Indenture is amended by deleting it in its entirety and inserting in lieu thereof
the phrase “[intentionally omitted]”. 
 (f) Section 10.06 (Release of Collateral) of the Indenture is amended by
deleting it in its entirety and inserting in lieu thereof the phrase “[intentionally omitted]”. 
 (g)
Section 10.07 (Authorization of Actions to Be Taken by the Trustee Under the Security Documents) of the Indenture is amended by deleting it in its entirety and inserting in lieu thereof the phrase “[intentionally omitted]”.

 (h) Section 10.08 (Authorization of Receipt of Funds by the Trustee under the Pledge Agreement) of the Indenture is
amended by deleting it in its entirety and inserting in lieu thereof the phrase “[intentionally omitted]”. 
 (i)
Section 10.09 (Lien Sharing and Priority Confirmation) of the Indenture is amended by deleting it in its entirety and inserting in lieu thereof the phrase “[intentionally omitted]”. 

(j) Section 10.10 (Voting) of the Indenture is amended by deleting it in its entirety and inserting in lieu thereof the phrase
“[intentionally omitted]”. 
 (k) Section 10.11 (Limitation on Duty of Trustee in Respect of Collateral;
Indemnification) of the Indenture is amended by deleting it in its entirety and inserting in lieu thereof the phrase “[intentionally omitted]”. 
 (l) Section 10.12 (Asset Sale Cash Collateral Account) of the Indenture is amended by deleting it in its entirety and inserting in lieu thereof the phrase “[intentionally omitted]”.

 (m) Section 10.13 (Collateral Trustee a Third Party Beneficiary) of the Indenture is amended by deleting it in its
entirety and inserting in lieu thereof the phrase “[intentionally omitted]”. 

  
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 ARTICLE NINE 
 SECTION 9.01. AMENDMENT TO CERTAIN PROVISIONS IN ARTICLE 11. Section 11.06 (Release of Guarantees) of the
Indenture is amended by: 
 (a) deleting the words “, except that the Guarantee by EFIH shall only be released and
discharged as provided in Section 4.16 hereof” where they appear in Section 11.06(a)(1); 
 (b) deleting the text
of Section 11.06(a)(3) in its entirety and inserting in lieu thereof the following text: “the designation or identification of any Restricted Subsidiary that is a Guarantor as an “Unrestricted Subsidiary.”; 

(c) deleting the text of Section 11.06(b) in its entirety and inserting in lieu thereof the following text: “The Guarantee by
EFIH shall automatically be released in connection with a Permitted Asset Transfer, unless such Guarantee has been previously released.”; and 
 (d) deleting the text of Section 11.06(c) in its entirety and inserting in lieu thereof the following text: “The Guarantee by EFCH shall be automatically released in connection with a Permitted
Asset Transfer, unless such Guarantee has been previously released.” 
 ARTICLE TEN 

SECTION 10.01. ELIMINATION OF CERTAIN PROVISIONS IN
THE NOTES. Paragraph 8 (Offers to Repurchase) of each Note is amended by deleting it in its entirety and inserting in lieu thereof the phrase “[intentionally omitted]”. 

ARTICLE ELEVEN 

SECTION 11.01. ELIMINATION OF CERTAIN EXHIBITS. 

(a) Exhibit E (Form of Permitted Transfer Supplemental Indenture) to the Indenture is deleted in its entirety. 

(b) Exhibit F (Form of TCEH Transfer Supplemental Indenture) to the Indenture is deleted in its entirety. 

ARTICLE TWELVE 

SECTION 12.01. REFERENCES TO DELETED OR AMENDED
PROVISIONS. Subject to Section 13.01 hereof, all references in the Indenture and any Note, as amended by Article Two, Article Three, Article Four, Article Five, Article Six, Article Seven, Article Eight, Article Nine, Article Ten
and Article Eleven hereof, to any of the provisions deleted and eliminated or modified as provided herein, or to terms defined in such provisions, shall also be deemed deleted 

  
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and eliminated or modified, as the case may be, in accordance with the terms of this Supplemental Indenture. Effective as of the date hereof, none of the Company, the Trustee or other parties to
or beneficiaries of the Indenture shall have any rights, obligations or liabilities under such deleted Sections or subsections and such deleted Sections or subsections shall not be considered in determining whether an Event of Default has occurred
or whether the Company has observed, performed or complied with the provisions of the Indenture or any Note. 
 SECTION
12.02. AMENDMENT TO DEFINITIONS. Subject to Section 13.01 hereof, the Indenture is hereby amended by deleting any definitions from the Indenture and any Note with respect to which references
would be eliminated as a result of amendments to the Indenture pursuant to Article Two, Article Three, Article Four, Article Five, Article Six, Article Seven, Article Eight, Article Nine, Article Ten and Article Eleven hereof. 

ARTICLE THIRTEEN 

SECTION 13.01. EFFECTIVENESS OF SUPPLEMENTAL INDENTURE. 

(a) This Supplemental Indenture shall be effective upon its execution and delivery by the parties hereto. The Proposed Amendments set
forth in Article Two, Article Three, Article Four, Article Five, Article Six, Article Seven, Article Eight, Article Nine, Article Ten, Article Eleven and Article Twelve will not become operative until immediately prior to the acceptance for exchange
of Notes in accordance with the terms and conditions set forth in the Offering Memorandum. 
 SECTION
13.02. GOVERNING LAW. THIS SUPPLEMENTAL INDENTURE WILL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE LAWS OF THE STATE OF NEW YORK. 
 SECTION 13.03. FULL Force AND EFFECT. Except as expressly amended hereby, the Indenture is in all respects ratified and confirmed and all the terms,
conditions and provisions thereof shall remain in full force and effect. Upon the execution and delivery of this Supplemental Indenture by the Company, the Guarantors and the Trustee, this Supplemental Indenture shall form a part of the Indenture
for all purposes, and the Company, the Guarantors, the Trustee and every Holder of Notes heretofore or hereafter authenticated and delivered shall be bound hereby. Any and all references to the Indenture, whether within the Indenture or in any
notice, certificate or other instrument or document, shall be deemed to include a reference to this Supplemental Indenture (whether or not made), unless the context shall otherwise require. 

SECTION 13.04. INDENTURE REMAINS IN FULL FORCE
AND EFFECT. Except as supplemented or amended hereby, all provisions in the Indenture shall remain in full force and effect. 
 SECTION 13.05. INDENTURE AND SUPPLEMENTAL INDENTURE CONSTRUED TOGETHER. This Supplemental Indenture is an
indenture supplemental to the Indenture, and the Indenture and this Supplemental Indenture shall henceforth be read and construed together. 

  
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 SECTION 13.06. CONFIRMATION AND
PRESERVATION OF INDENTURE. The Indenture as supplemented or amended by this Supplemental Indenture is in all respects confirmed and preserved. 

SECTION 13.07. BENEFITS OF SUPPLEMENTAL INDENTURE. Nothing in this
Supplemental Indenture, express or implied, shall give to any Person other than the parties hereto and thereto and their successors hereunder and thereunder and the Holders of the Notes, any benefit of any legal or equitable right, remedy or claim
under the Indenture, this Supplemental Indenture or the Notes. 
 SECTION 13.08. SUCCESSORS. All agreements
of the Trustee in this Supplemental Indenture shall bind its successors. 
 SECTION 13.09. THE
TRUSTEE. The Trustee shall not be responsible in any manner for or in respect of the validity or sufficiency of this Supplemental Indenture or for or in respect of the recitals contained herein, all of which are made by the Company.

 SECTION 13.10. COUNTERPARTS. The parties may sign any number of copies of this Supplemental Indenture.
Each signed copy shall be an original, but all of them together represent the same agreement. 
 SECTION
13.11. EFFECT OF HEADINGS. The Section headings herein are for convenience only and shall not affect the construction hereof. 
 SECTION 13.12. SEVERABILITY. If any provision in this Supplemental Indenture shall be invalid, illegal or unenforceable, the validity, legality or enforceability of the remaining
provisions of this Supplemental Indenture or the Indenture shall not in any way be affected or impaired thereby. 
 [Remainder
of Page Left Intentionally Blank] 

  
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 IN WITNESS WHEREOF, the parties hereto have caused this Supplemental Indenture to be duly
executed as of the date first above written. 
  

					
	ENERGY FUTURE HOLDINGS CORP.
		
	By:	 	 /s/ Anthony R. Horton

		 	Name:	 	Anthony R. Horton
		 	Title:	 	Senior Vice President and Treasurer
	
	ENERGY FUTURE INTERMEDIATE HOLDING COMPANY LLC
		
	By:	 	 /s/ Anthony R. Horton

		 	Name:	 	Anthony R. Horton
		 	Title:	 	Senior Vice President and Treasurer
	
	ENERGY FUTURE COMPETITIVE HOLDINGS COMPANY
		
	By:	 	 /s/ Anthony R. Horton

		 	Name:	 	Anthony R. Horton
		 	Title:	 	Senior Vice President and Treasurer
	
	THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A., as Trustee
		
	By:	 	 /s/ Julie Hoffman-Ramos

		 	Name:	 	Julie Hoffman-Ramos
		 	Title:	 	Vice President

 [Signature Page to EFH 10.000% Notes Eighth Supplemental Indenture]Supplemental Indenture

 Exhibit 4.3 
 SUPPLEMENTAL INDENTURE 
 Supplemental Indenture (this “Supplemental
Indenture”), dated as of January 25, 2013, among Energy Future Intermediate Holding Company LLC, a Delaware limited liability company ( “EFIH”), EFIH Finance Inc., a Delaware corporation (“EFIH
Finance” and, together with EFIH, the “Issuer”), and The Bank of New York Mellon Trust Company, N.A., a national banking association, as Trustee (the “Trustee”). 

W I T N E S S E T H 
 WHEREAS, the Issuer has heretofore executed and delivered to the Trustee an Indenture, dated as of November 16, 2009 (the “Indenture”), providing for the issuance of the
Issuer’s 9.75% Senior Secured Notes due 2019 (the “Notes”); 
 WHEREAS,
Section 9.02 of the Indenture provides that, (i) with the consent of the Holders of at least a majority in aggregate principal amount of the Notes then outstanding voting as a single class, the Issuer and the Trustee may amend or
supplement the Indenture and the Notes, and (ii) with the consent of the Holders of at least 66 2/3% in aggregate principal amount of the Notes then outstanding voting as a single class, the Issuer and the Trustee may
amend or supplement the Security Documents relating to the Notes and the provisions of the Indenture to modify such documents to release all or substantially all of the Collateral securing the Notes; 

WHEREAS, the Issuer has solicited consents upon the terms and subject to the conditions set forth in the offering memorandum and consent
solicitation statement dated December 21, 2012 (the “Offering Memorandum”) and in the related Consent and Letter of Transmittal from each Holder of the Notes to the amendments to the Indenture set forth below in Article Two,
Article Three, Article Four, Article Five, Article Six, Article Seven, Article Eight, Article Nine, Article Ten and Article Eleven of this Supplemental Indenture (the “Proposed Amendments”); 

WHEREAS, the Issuer has received the consents from Holders of approximately 98.57% in aggregate principal amount of the outstanding Notes
to the Proposed Amendments; 
 WHEREAS, the Issuer has delivered to the Trustee an Officer’s Certificate as well as an
Opinion of Counsel to the effect that the execution of this Supplemental Indenture is authorized or permitted under the Indenture and that all conditions precedent and covenants provided for in the Indenture relating to the execution and delivery of
this Supplemental Indenture have been satisfied and complied with; 
 WHEREAS, the Board of Directors of the Issuer has
authorized the execution of this Supplemental Indenture; 
 WHEREAS, all conditions necessary to authorize the execution and
delivery of this Supplemental Indenture by the Issuer and to make this Supplemental Indenture valid and binding on the Issuer have been complied with or have been done or performed; and 

 WHEREAS, pursuant to Sections 9.02 and 9.06 of the Indenture, the Trustee is authorized to
execute and deliver this Supplemental Indenture. 
 NOW THEREFORE, in consideration of the foregoing and for other good and
valuable consideration, the receipt of which is hereby acknowledged, the parties mutually covenant and agree for the equal and ratable benefit of the Holders of the Notes as follows: 

ARTICLE ONE 

SECTION 1.01. CAPITALIZED TERMS. Capitalized terms used herein without definition shall have the
meanings assigned to them in the Indenture. 
 ARTICLE TWO 

SECTION 2.01. AMENDMENT TO THE TABLE OF
CONTENTS. The Table of Contents of the Indenture is amended by deleting the titles to Sections 4.05, 4.06, 4.07, 4.08, 4.09, 4.10, 4.11, 4.12, 4.13, 4.14, 4.15, 4.16, 4.18, 4.19, 4.20, 4.21, 10.01, 10.02, 10.03, 10.04, 10.05, 10.06,
10.07, 10.08, 10.09, 10.10, 10.11, 10.12 and 10.13 and inserting in lieu thereof the phrase “[intentionally omitted]”. 

ARTICLE THREE 

SECTION 3.01. AMENDMENT TO CERTAIN PROVISIONS IN
ARTICLE 1. Section 1.01 of the Indenture is amended by deleting the definition of “Unrestricted Subsidiary” in its entirety and inserting in lieu thereof the following text: 

““Unrestricted Subsidiary” means: 
  

	 	(1)	each of the Oncor Subsidiaries; 

  

	 	(2)	any Subsidiary of EFIH other than EFIH Finance which at the time of determination is an Unrestricted Subsidiary (as designated or identified by EFIH); and

  

	 	(3)	any Subsidiary of an Unrestricted Subsidiary. 

 EFIH may designate any Subsidiary of EFIH (including any existing Subsidiary and any newly acquired or newly formed Subsidiary) other than EFIH Finance to be an Unrestricted Subsidiary.” 

  
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 ARTICLE FOUR 
 SECTION 4.01. AMENDMENT TO AND ELIMINATION OF CERTAIN PROVISIONS IN
ARTICLE 4. 
 (a) Section 4.03 (Reports and Other Information) of the Indenture is amended by deleting the
text of that section in its entirety and inserting in lieu thereof the following text: 
 “Notwithstanding that EFIH may not
be subject to the reporting requirements of Section 13 or 15(d) of the Exchange Act or otherwise report on an annual and quarterly basis on forms provided for such annual and quarterly reporting pursuant to rules and regulations promulgated by
the SEC, EFIH shall comply with the reporting obligations set forth under Section 314(a) of the Trust Indenture Act.” 

(b) Section 4.05 (Taxes) of the Indenture is amended by deleting it in its entirety and inserting in lieu thereof the phrase
“[intentionally omitted]”. 
 (c) Section 4.06 (Stay, Extension and Usury Laws) of the Indenture is amended by
deleting it in its entirety and inserting in lieu thereof the phrase “[intentionally omitted]”. 
 (d)
Section 4.07 (Limitation on Restricted Payments) of the Indenture is amended by deleting it in its entirety and inserting in lieu thereof the phrase “[intentionally omitted]”. 

(e) Section 4.08 (Dividend and Other Payment Restrictions Affecting Restricted Subsidiaries) of the Indenture is amended by deleting
it in its entirety and inserting in lieu thereof the phrase “[intentionally omitted]”. 
 (f) Section 4.09
(Limitation on Incurrence of Indebtedness and Issuance of Disqualified Stock and Preferred Stock) of the Indenture is amended by deleting it in its entirety and inserting in lieu thereof the phrase “[intentionally omitted]”. 

(g) Section 4.10 (Asset Sales) of the Indenture is amended by deleting it in its entirety and inserting in lieu thereof the phrase
“[intentionally omitted]”. 
 (h) Section 4.11 (Transactions with Affiliates) of the Indenture is amended by
deleting it in its entirety and inserting in lieu thereof the phrase “[intentionally omitted]”. 
 (i)
Section 4.12 (Liens) of the Indenture is amended by deleting it in its entirety and inserting in lieu thereof the phrase “[intentionally omitted]”. 
 (j) Section 4.13 (Corporate Existence) of the Indenture is amended by deleting it in its entirety and inserting in lieu thereof the phrase “[intentionally omitted]”. 

(k) Section 4.14 (Offer to Repurchase upon Change of Control) of the Indenture is amended by deleting it in its entirety and
inserting in lieu thereof the phrase “[intentionally omitted]”. 
 (l) Section 4.15 (Limitation on Guarantees of
Indebtedness by Restricted Subsidiaries) of the Indenture is amended by deleting it in its entirety and inserting in lieu thereof the phrase “[intentionally omitted]”. 

(m) Section 4.16 (Limitations on Business Activities of EFIH Finance) of the Indenture is amended by deleting it in its entirety and
inserting in lieu thereof the phrase “[intentionally omitted]”. 

  
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 (n) Section 4.18 (Restrictions on Certain Investments in Oncor Subsidiaries and the
Collateral) of the Indenture is amended by deleting it in its entirety and inserting in lieu thereof the phrase “[intentionally omitted]”. 
 (o) Section 4.19 (After-Acquired Property) of the Indenture is amended by deleting it in its entirety and inserting in lieu thereof the phrase “[intentionally omitted]”. 

(p) Section 4.20 (Impairment of Security Interest) of the Indenture is amended by deleting it in its entirety and inserting in lieu
thereof the phrase “[intentionally omitted]”. 
 (q) Section 4.21 (Further Assurances) of the Indenture is
amended by deleting it in its entirety and inserting in lieu thereof the phrase “[intentionally omitted]”. 
 ARTICLE
FIVE 
 SECTION 5.01. ELIMINATION OF CERTAIN PROVISIONS
IN ARTICLE 5. Section 5.01(Merger, Consolidation or Sale of All or Substantially All Assets) of the Indenture is amended by: 
 (a) deleting the text of clauses (3), (4), (5) and (7) (including the proviso and the following text that appear after clause (7): “provided, that for the purposes of this Section 5.01
only, a transaction meeting the requirements of the proviso to clause (1) under the definition of “Change of Control” shall not be deemed to be a sale, assignment, transfer, conveyance or other disposition of all or substantially all
of the properties or assets of EFIH and its Subsidiaries. For the avoidance of doubt, EFIH may consummate a transaction meeting the requirements of the proviso to clause (1) under the definition of “Change of Control” without
complying with this Section 5.01, and the determination in the preceding proviso shall not affect the determination of what constitutes all or substantially all the assets of EFIH and its Subsidiaries under any other agreement to which EFIH is
a party.”) of Section 5.01(a) in their entirety and inserting in lieu thereof the phrase “[intentionally omitted]”; 
 (b) deleting the text of subsection (c) in its entirety and inserting in lieu thereof the phrase “[intentionally omitted]”; and 

(c) deleting the text of clauses (2) and (3) of Section 5.01(e) in their entirety and inserting in lieu thereof the phrase
“[intentionally omitted]”. 

  
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 ARTICLE SIX 
 SECTION 6.01. AMENDMENT TO AND ELIMINATION OF CERTAIN PROVISIONS IN
ARTICLE 6. Section 6.01 (Events of Default) of the Indenture is amended by: 
 (a) deleting the text of
clauses (3), (4), (5), (8) and (9) of Section 6.01(a) in their entirety and inserting in lieu thereof the phrase “[intentionally omitted]”; and 
 (b) deleting the words “or any Significant Subsidiary (or any group of Restricted Subsidiaries that together would constitute a Significant Subsidiary)” in each instance where they appear in
clauses (6) and (7) of Section 6.01(a). 
 ARTICLE SEVEN 

SECTION 7.01. AMENDMENT TO AND ELIMINATION OF
CERTAIN PROVISIONS IN ARTICLE 8. Section 8.04 (Conditions to Legal or Covenant Defeasance) of the Indenture is amended by deleting clauses (2), (3), (4), (5), (6), (7) and
(8) of such Section 8.04 in their entirety and inserting in lieu thereof the phrase “[intentionally omitted]”. 
 ARTICLE EIGHT 
 SECTION 8.01. ELIMINATION OF
ARTICLE 10. 
 (a) Section 10.01 (Equal and Ratable Sharing of Collateral by Holders of Parity Lien Debt) of
the Indenture is amended by deleting it in its entirety and inserting in lieu thereof the phrase “[intentionally omitted]”. 
 (b) Section 10.02 (Ranking of Parity Liens) of the Indenture is amended by deleting it in its entirety and inserting in lieu thereof the phrase “[intentionally omitted]”. 

(c) Section 10.03 (Relative Rights) of the Indenture is amended by deleting it in its entirety and inserting in lieu thereof the
phrase “[intentionally omitted]”. 
 (d) Section 10.04 (Security Documents) of the Indenture is amended by
deleting it in its entirety and inserting in lieu thereof the phrase “[intentionally omitted]”. 
 (e)
Section 10.05 (Recording and Opinions) of the Indenture is amended by deleting it in its entirety and inserting in lieu thereof the phrase “[intentionally omitted]”. 

(f) Section 10.06 (Release of Collateral) of the Indenture is amended by deleting it in its entirety and inserting in lieu thereof
the phrase “[intentionally omitted]”. 
 (g) Section 10.07 (Authorization of Actions to Be Taken by the Trustee
Under the Security Documents) of the Indenture is amended by deleting it in its entirety and inserting in lieu thereof the phrase “[intentionally omitted]”. 
 (h) Section 10.08 (Authorization of Receipt of Funds by the Trustee under the Pledge Agreement) of the Indenture is amended by deleting it in its entirety and inserting in lieu thereof the phrase
“[intentionally omitted]”. 
 (i) Section 10.09 (Lien Sharing and Priority Confirmation) of the Indenture is
amended by deleting it in its entirety and inserting in lieu thereof the phrase “[intentionally omitted]”. 

  
 -5-

 (j) Section 10.10 (Voting) of the Indenture is amended by deleting it in its entirety
and inserting in lieu thereof the phrase “[intentionally omitted]”. 
 (k) Section 10.11 (Limitation on Duty of
Trustee in Respect of Collateral; Indemnification) of the Indenture is amended by deleting it in its entirety and inserting in lieu thereof the phrase “[intentionally omitted]”. 

(l) Section 10.12 (Asset Sale Cash Collateral Account) of the Indenture is amended by deleting it in its entirety and inserting in
lieu thereof the phrase “[intentionally omitted]”. 
 (m) Section 10.13 (Collateral Trustee a Third Party
Beneficiary) of the Indenture is amended by deleting it in its entirety and inserting in lieu thereof the phrase “[intentionally omitted]”. 
 ARTICLE NINE 
 SECTION 9.01. AMENDMENT TO
CERTAIN PROVISIONS IN ARTICLE 11. Section 11.06 (Release of Guarantees) of the Indenture is amended by: deleting the text of Section 11.06(a)(3) in its entirety and inserting in
lieu thereof the following text: “the designation or identification of any Restricted Subsidiary that is a Guarantor as an “Unrestricted Subsidiary.” 
 ARTICLE TEN 
 SECTION 10.01. ELIMINATION OF
CERTAIN PROVISIONS IN THE NOTES. Paragraph 8 (Offers to Repurchase) of each Note is amended by deleting it in its entirety and inserting in lieu thereof the phrase
“[intentionally omitted]”. 
 ARTICLE ELEVEN 
 SECTION 11.01. REFERENCES TO DELETED OR AMENDED PROVISIONS. Subject to Section 12.01 hereof, all
references in the Indenture and any Note, as amended by Article Two, Article Three, Article Four, Article Five, Article Six, Article Seven, Article Eight, Article Nine and Article Ten hereof, to any of the provisions deleted and eliminated or
modified as provided herein, or to terms defined in such provisions, shall also be deemed deleted and eliminated or modified, as the case may be, in accordance with the terms of this Supplemental Indenture. Effective as of the date hereof, none of
the Issuer, the Trustee or other parties to or beneficiaries of the Indenture shall have any rights, obligations or liabilities under such deleted Sections or subsections and such deleted Sections or subsections shall not be considered in
determining whether an Event of Default has occurred or whether the Issuer has observed, performed or complied with the provisions of the Indenture or any Note. 
 SECTION 11.02. AMENDMENT TO DEFINITIONS. Subject to Section 12.01 hereof, the Indenture is hereby amended by deleting any definitions from the
Indenture and any Note with respect to which references would be eliminated as a result of amendments to the Indenture pursuant to Article Two, Article Three, Article Four, Article Five, Article Six, Article Seven, Article Eight, Article Nine and
Article Ten hereof. 

  
 -6-

 ARTICLE TWELVE 
 SECTION 12.01. EFFECTIVENESS OF SUPPLEMENTAL INDENTURE. 
 (a) This Supplemental Indenture shall be effective upon its execution and delivery by the parties hereto. The Proposed Amendments set forth in Article Two, Article Three, Article Four, Article Five,
Article Six, Article Seven, Article Eight, Article Nine, Article Ten and Article Eleven will not become operative until immediately prior to the acceptance for exchange of Notes in accordance with the terms and conditions set forth in the Offering
Memorandum. 
 SECTION 12.02. GOVERNING LAW. THIS SUPPLEMENTAL INDENTURE WILL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE
WITH THE LAWS OF THE STATE OF NEW YORK. 
 SECTION 12.03. FULL Force AND
EFFECT. Except as expressly amended hereby, the Indenture is in all respects ratified and confirmed and all the terms, conditions and provisions thereof shall remain in full force and effect. Upon the execution and delivery of this
Supplemental Indenture by the Issuer and the Trustee, this Supplemental Indenture shall form a part of the Indenture for all purposes, and the Issuer, the Trustee and every Holder of Notes heretofore or hereafter authenticated and delivered shall be
bound hereby. Any and all references to the Indenture, whether within the Indenture or in any notice, certificate or other instrument or document, shall be deemed to include a reference to this Supplemental Indenture (whether or not made), unless
the context shall otherwise require. 
 SECTION 12.04. INDENTURE REMAINS IN
FULL FORCE AND EFFECT. Except as supplemented or amended hereby, all provisions in the Indenture shall remain in full force and effect. 

SECTION 12.05. INDENTURE AND SUPPLEMENTAL INDENTURE
CONSTRUED TOGETHER. This Supplemental Indenture is an indenture supplemental to the Indenture, and the Indenture and this Supplemental Indenture shall henceforth be read and construed together. 

SECTION 12.06. CONFIRMATION AND PRESERVATION OF
INDENTURE. The Indenture as supplemented or amended by this Supplemental Indenture is in all respects confirmed and preserved. 
 SECTION 12.07. BENEFITS OF SUPPLEMENTAL INDENTURE. Nothing in this Supplemental Indenture, express or implied, shall give to any Person
other than the parties hereto and thereto and their successors hereunder and thereunder and the Holders of the Notes, any benefit of any legal or equitable right, remedy or claim under the Indenture, this Supplemental Indenture or the Notes.

 SECTION 12.08. SUCCESSORS. All agreements of the Trustee in this Supplemental Indenture shall bind its
successors. 
 SECTION 12.09. THE TRUSTEE. The Trustee shall not be responsible in any manner
for or in respect of the validity or sufficiency of this Supplemental Indenture or for or in respect of the recitals contained herein, all of which are made by the Issuer. 

  
 -7-

 SECTION 12.10. COUNTERPARTS. The parties may sign any number of copies
of this Supplemental Indenture. Each signed copy shall be an original, but all of them together represent the same agreement. 

SECTION 12.11. EFFECT OF HEADINGS. The Section headings herein are for convenience only
and shall not affect the construction hereof. 
 SECTION 12.12. SEVERABILITY. If any provision in this
Supplemental Indenture shall be invalid, illegal or unenforceable, the validity, legality or enforceability of the remaining provisions of this Supplemental Indenture or the Indenture shall not in any way be affected or impaired thereby. 

[Remainder of Page Left Intentionally Blank] 

  
 -8-

 IN WITNESS WHEREOF, the parties hereto have caused this Supplemental Indenture to be duly
executed as of the date first above written. 
  

					
	ENERGY FUTURE INTERMEDIATE HOLDING COMPANY LLC
		
	By:	 	 /s/ Anthony R. Horton

		 	Name:	 	Anthony R. Horton
		 	Title:	 	Senior Vice President and Treasurer
	
	EFIH FINANCE INC.
		
	By:	 	 /s/ Anthony R. Horton

		 	Name:	 	Anthony R. Horton
		 	Title:	 	Senior Vice President and Treasurer
	
	THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A., as Trustee
		
	By:	 	 /s/ Julie Hoffman-Ramos

		 	Name:	 	Julie Hoffman-Ramos
		 	Title:	 	Vice President

 [Signature Page to EFIH 9.75% Notes Supplemental Indenture]

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