Document:

Stock Option Agreement, dated as of January 26, 2010

 Exhibit 10(gg) 
 ENERGY FUTURE HOLDINGS CORP. KEY EMPLOYEE 
 NON-QUALIFIED STOCK OPTION AGREEMENT 
 RICHARD LANDY 
 THIS AGREEMENT (“Agreement”), dated as of January 26, 2010 (the “Effective Date”), is
made by and between Energy Future Holdings Corp., a Texas corporation (hereinafter referred to as the “Company”), and the individual whose name is set forth on the signature page hereof (hereinafter referred to as the
“Optionee”). Any capitalized terms used but not otherwise defined herein shall have the meaning set forth in the 2007 Stock Incentive Plan for Key Employees of Energy Future Holdings Corp. and its Affiliates (the
“Plan”). 
 WHEREAS, the Company wishes to act consistently with the Plan, the terms of which are
incorporated by reference and made part of this Agreement; and 
 WHEREAS, the Organization and Compensation Committee of
the Board of the Company (the “Committee”) has determined that it would be to the advantage and best interest of the Company and its shareholders to grant the Option provided for herein to the Optionee as an incentive for
increased efforts during his term of employment with the Company or its Subsidiaries or Affiliates, and has advised the Company thereof and authorized the undersigned officers to issue said Option. 
 NOW, THEREFORE, in consideration of the mutual covenants herein contained and other good and valuable consideration, receipt of which
is hereby acknowledged, the parties hereto do hereby agree as follows: 
 ARTICLE I 
 DEFINITIONS 
 Whenever the following terms are used in this Agreement, they shall have the meaning specified below unless the context clearly indicates to the contrary. 
 Section 1.1 Cause 
 “Cause” shall mean
“Cause” as defined in the employment agreement or change-in-control agreement between the Optionee and the Company or any of its Subsidiaries or Affiliates, or, if there is no such employment or change-in-control agreement in effect at the
time Optionee’s employment is terminated, “Cause” shall mean, with respect to an Optionee: (i) if, in carrying out his duties to the Company, the Optionee engages in conduct that constitutes (a) a material breach of his
fiduciary duty to the Company or its shareholders (including, without limitation a material breach or attempted breach of the restrictive covenants under the Management Stockholder’s Agreement), (b) gross neglect or (c) gross
misconduct resulting in material economic harm to the Company, provided that any such conduct described in (a), (b) or (c) is not cured within ten (10) business days after the Optionee receives from the Company written notice thereof,
or (ii) Optionee’s conviction of, or entry of a plea of guilty or nolo contendere for, a felony or other crime involving moral turpitude. 

 Section 1.2 Deemed Retirement 
 “Deemed Retirement” shall mean the Optionee’s termination of employment for any reason after having been
employed by the Company or a Subsidiary or Parent for at least three (3) consecutive years. For the avoidance of doubt, the Optionee’s retirement at age 55 or over after having been employed by the Company or a Subsidiary or Parent for at
least ten (10) consecutive years shall constitute “Retirement” not a “Deemed Retirement” for purposes of this Agreement. 
 Section 1.3 Disability 
 “Disability” shall mean “Disability” as defined
in the employment agreement between the Optionee and the Company or any of its Subsidiaries, or, if there is no such employment agreement, “Disability” shall mean the Optionee’s physical or mental incapacitation and consequent
inability for a period of six consecutive months to perform the Optionee’s duties; provided, however, in the event the Company temporarily replaces the Optionee, or transfers the Optionee’s duties or responsibilities to
another individual, on account of the Optionee’s mental or physical impairment for a period of time which is covered by the Company’s short term disability plan, the Optionee’s employment shall not be deemed terminated by the Company
and the Optionee shall not be able to resign with Good Reason. 
 Section 1.4 Extended Exercise Date 
 “Extended Exercise Date” shall mean the earlier of: (i) the tenth anniversary of the Grant Date; or
(ii) the later of the date: (A) one hundred and eighty (180) days following the date Optionee’s employment with the Company and all Service Recipients is terminated and (B) thirty (30) days following the first date on
which the Optionee could exercise the Option, or any portion thereof, and immediately resell the Shares acquired upon such exercise for cash consideration. 
 Section 1.5 Fair Market Value 
 “Fair Market
Value” shall mean, for the purposes of the Plan and this Agreement and notwithstanding the definition contained in the Plan: (i) if there is a public market for the Shares on such date, the average of the high and low closing bid
prices of the Shares on such stock exchange on which the Shares are principally trading on the date in question, or, if there were no sales on such date, on the closest preceding date on which there were sales of Shares or, (ii) if there is no
public market for the Shares, on a per Share basis, the fair market value of the Shares on any given date, as determined reasonably and in good faith by the Board, which shall not take into account any minority interest discount or a discount for
illiquidity of Shares held by an Optionee in excess of any illiquidity discount applicable to Shares generally; provided that if the Board’s determination under this clause (ii) is not based on a valuation completed by an independent
valuation firm within the 6 months preceding the Board’s determination, the Optionee may require the Company to retain an independent valuation firm to determine the fair market value (and the Company will bear the cost of such appraisal,
unless the appraised value is 110% or less of the fair market value as determined by the Board, in which case the Optionee will bear the cost of such appraisal). 
 Section 1.6 Good Reason 
 “Good Reason” shall
mean “Good Reason” as defined in the employment agreement or change-in-control agreement between the Optionee and the Company or any of its Subsidiaries or Affiliates, or, if there is no such employment or change-in-control agreement in
effect at the time Optionee’s employment is terminated, “Good Reason” shall mean (i) a reduction in the Optionee’s base salary or the Optionee’s annual incentive compensation opportunity (other than a general reduction
in base salary or annual incentive compensation opportunity that affects all salaried employees of the Company proportionately); (ii) a transfer of the Optionee’s primary workplace by more than thirty-five (35) miles from the current
workplace; (iii) a substantial adverse change in the Optionee’s duties and responsibilities; (iv) any material breach by the Company of this Agreement, the Management Stockholder’s Agreement, or the Optionee’s employment
agreement; or (v) an adverse change in the Optionee’s line of reporting to superior officers pursuant to the terms of his employment agreement or any change-in-control agreement; provided, however, that any isolated,
insubstantial and inadvertent failure by the Company that is not in bad faith and is cured within ten (10) business days after the Optionee gives the Company written notice of any such event set forth above, shall not constitute Good Reason.

  

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 Section 1.7 Grant Date 
 “Grant Date” means the date the Option is granted, which is specified in Section 2.1 hereof. 
 Section 1.8 Job Elimination 
 “Job Elimination” shall mean the termination of an Optionee’s employment without Cause by the Company or any of its Subsidiaries or Affiliates in either of fiscal year 2011 or 2012 due to the elimination of the
Optionee’s job position, to the extent determined by the Chief Executive Officer and approved by the Committee that such elimination occurred. 
 Section 1.9 Management Stockholder’s Agreement 
 “Management Stockholder’s
Agreement” shall mean the Management Stockholder’s Agreement between the Optionee and the Company. 
 Section 1.10
Option 
 “Option” shall have the meaning given such term in Section 2.1 hereof. 

Section 1.11 Parent 
 “Parent” shall mean Texas Energy Future Holdings Limited Partnership, a Delaware Limited Partnership. 
 Section 1.12 Retirement 
 “Retirement” shall mean the Optionee’s retirement at
age 55 or over after having been employed by the Company or a Subsidiary or Parent for at least ten (10) consecutive years. 
 Section 1.13 Secretary 
 “Secretary” shall mean the Secretary of the Company.

  

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 ARTICLE II 
 GRANT OF OPTIONS 
 Section 2.1 Grant of Options 
 This Agreement evidences the grant to the Optionee, for good and valuable consideration and on the terms and conditions set forth in this
Agreement, of an option to purchase 400,000 Shares, granted to Optionee on December 31, 2009, which shall vest in accordance with the provisions of Section 3.1 hereof (the “Option”). 
 Section 2.2 Exercise Price 
 Subject to Section 2.4, the exercise price of the Shares covered by the Option shall be equal to $3.50 per Share (the “Exercise Price”). 
 Section 2.3 No Guarantee of Employment 
 Nothing in this Agreement or
in the Plan shall confer upon the Optionee any right to continued employment by the Company or any Subsidiary or Affiliate or shall interfere with or restrict in any way the rights of the Company and its Subsidiaries or Affiliates, which are hereby
expressly reserved, to terminate the employment of the Optionee at any time for any reason whatsoever, with or without Cause, subject to the applicable provisions of, if any, the Optionee’s employment agreement with the Company. 
 Section 2.4 Adjustments to Option 
 The Option shall be subject to the adjustment provisions of Sections 8 and 9 of the Plan, provided, however, that in the event of the payment of an extraordinary dividend by the Company to
its stockholders, then: the Exercise Price of the Option shall be reduced by the amount of the dividend paid, but only to the extent the Committee determines it to be permitted under applicable tax laws and not to have adverse tax consequences to
the Optionee under Section 409A of the Code; and, if such reduction cannot be fully effected due to such tax laws without adverse tax consequences to the Optionee, then the Company shall pay to the Optionee a cash payment, on a per Share basis,
equal to the balance of the amount of the dividend not permitted to be applied to reduce the Exercise Price of the applicable Option as follows: (a) for each Share subject to a vested Option, immediately upon the date of such dividend payment;
and (b) for each Share subject to an unvested Option, on the date on which such Option becomes vested and exercisable with respect to such Share. 
 ARTICLE III 
 PERIOD OF EXERCISABILITY 
 Section 3.1 Commencement of Exercisability 
 (a) The Option shall become vested and exercisable in accordance with the following schedule, provided the Optionee has remained continuously employed by the Company or any other Service Recipients
through the applicable vesting dates: 
  

			
	 Vesting Date
	  	Cumulative Percentage of Shares
Subject to the Option that are Vested
and Exercisable
	July 4, 2011	  	50%
		
	January 4, 2013	  	50%

  

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 (b) Notwithstanding any of Section 3.1(a) above, upon the occurrence of a termination
of employment without Cause, termination of employment on account of the Company or other applicable Service Recipient’s failure to renew the Optionee’s existing employment agreement, or a resignation by the Optionee for Good Reason, in
each case following the occurrence of a Change in Control, the Option shall become immediately exercisable as to 100% of the Shares subject to such Option immediately prior to the Change in Control. 
 (c) Except as provided above, no Option shall become exercisable as to any additional Shares following the termination of employment of the
Optionee for any reason and any Option, which is unexercisable as of the Optionee’s termination of employment, shall immediately expire without payment therefor. 
 Section 3.2 Expiration of Option 
 Except as otherwise provided in
Section 5 or 6 of the Management Stockholder’s Agreement, the Optionee may not exercise the Option, or any portion thereof, to any extent after the first to occur of the following events: 
 (a) The tenth anniversary of the Grant Date; 
 (b) The first anniversary of the date of the Optionee’s termination of employment with the Company and all Service Recipients, if the Optionee’s employment is terminated by reason of death,
Disability, or Deemed Retirement; 
 (c) Immediately upon the date of an Optionee’s termination of employment by the
Company and all Service Recipients for Cause; 
 (d) Thirty (30) days after the date of an Optionee’s resignation from
employment with the Company and all Service Recipients without Good Reason (except due to death, Disability, or Deemed Retirement); 
 (e) One hundred and eighty (180) days after the date of: (i) an Optionee’s resignation from employment with the Company and all Service Recipients for Good Reason; or (ii) an Optionee’s Retirement; or (iii) an
Optionee’s termination of employment by the Company and all Service Recipients without Cause (for any reason other than death, Disability, Job Elimination, or Deemed Retirement), including upon nonrenewal of Optionee’s existing employment
agreement by the Company or other applicable Service Recipient, in the event such termination listed in (i), (ii), or (iii) occurs prior to the fifth anniversary of October 10, 2007; 
  

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 (f) The Extended Exercise Date in the event of (i) an Optionee’s resignation from
employment with the Company and all Service Recipients for Good Reason; (ii) an Optionee’s Retirement; or (iii) an Optionee’s termination of employment by the Company and all Service Recipients without Cause (for any reason other
than death, Disability, Job Elimination, or Deemed Retirement), including upon nonrenewal of Optionee’s existing employment agreement by the Company or other applicable Service Recipient, and any such termination listed in (i), (ii), or
(iii) occurs on or after the fifth anniversary of October 10, 2007; 
 (g) The Extended Exercise Date in the event of
an Optionee’s Job Elimination; 
 (h) Immediately upon the date of an Optionee’s breach of the provisions of
Section 22(a)(ii) of the Management Stockholder’s Agreement; or 
 (i) At the discretion of the Company, if the
Committee so determines pursuant to Section 9 of the Plan, but only to the extent the Committee determines it to be permitted under applicable tax laws and to not have adverse tax consequences to the Optionee under Section 409A of the
Code. 
 ARTICLE IV 
 EXERCISE OF OPTION 
 Section 4.1 Person Eligible to Exercise 
 During the lifetime of the Optionee, only the Optionee (or his duly authorized legal representative) may exercise the Option or any portion
thereof. After the death of the Optionee, any exercisable portion of the Option may, prior to the time when an Option becomes unexercisable under Section 3.2, be exercised by his personal representative or by any person empowered to do so under
the Optionee’s will or under the then applicable laws of descent and distribution. 
 Section 4.2 Partial Exercise 

Any exercisable portion of the Option or the entire Option, if then wholly exercisable, may be exercised in whole or in part at any time
prior to the time when the Option or portion thereof becomes unexercisable under Section 3.2; provided, however, that any partial exercise shall be for whole Shares only. 
 Section 4.3 Manner of Exercise 
 The Option, or any exercisable portion thereof, may be exercised solely by delivering to the Secretary or her office all of the following prior to the time when the Option or such portion becomes unexercisable under Section 3.2:

 (a) Notice in writing signed by the Optionee or the other person then entitled to exercise the Option or portion thereof,
stating that the Option or portion thereof is thereby exercised, such notice complying with all applicable rules established by the Committee; 
 (b) (i) Full payment (in cash, by check, or by a combination thereof or through tender of previously owned Shares (any such Shares valued at Fair Market Value on the date of exercise) that the Participant
has held for at least six months (or such other period as may be required by the Company’s accountants but only to the extent required to avoid liability accounting under FAS 123(R) or any successor standard thereto)) for the Shares with
respect to which such Option or portion thereof is exercised or (ii) indication that the Optionee elects to have the number of Shares that would otherwise be issued to the Optionee reduced by a number of Shares having an equivalent Fair Market
Value to the payment that would otherwise be made by the Optionee to the Company pursuant to clause (i) of this subsection (b); 
  

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 (c) (i) Full payment (in cash or by check or by a combination thereof) to satisfy the
minimum withholding tax obligation with respect to which such Option or portion thereof is exercised; or (ii) notice in writing that the Optionee elects to have the number of Shares that would otherwise be issued to the Optionee reduced by a
number of Shares having an equivalent Fair Market Value to the payment that would otherwise be made by the Optionee to the Company pursuant to clause (i) of this subsection (c); 
 (d) A bona fide written representation and agreement, in a form satisfactory to the Committee, signed by the Optionee or other person then
entitled to exercise such Option or portion thereof, stating that the Shares are being acquired for his own account, for investment and without any present intention of distributing or reselling said Shares or any of them except as may be permitted
under the Securities Act of 1933, as amended (the “Act”), and then applicable rules and regulations thereunder, and that the Optionee or other person then entitled to exercise such Option or portion thereof will indemnify the
Company against and hold it free and harmless from any loss, damage, expense or liability resulting to the Company if any sale or distribution of the Shares by such person is contrary to the representation and agreement referred to above;
provided, however, that the Committee may, in its reasonable discretion, take whatever additional actions it deems reasonably necessary to ensure the observance and performance of such representation and agreement and to effect
compliance with the Act and any other federal or state securities laws or regulations; and 
 (e) In the event the Option or
portion thereof shall be exercised pursuant to Section 4.1 by any person or persons other than the Optionee, appropriate proof of the right of such person or persons to exercise the Option. 
 Without limiting the generality of the foregoing, the Committee may require an opinion of counsel acceptable to it to the effect that any subsequent
transfer of Shares acquired on exercise of an Option does not violate the Act, and may issue stop-transfer orders covering such Shares. Share certificates evidencing stock issued on exercise of this Option shall bear an appropriate legend referring
to the provisions of subsection (d) above and the agreements herein. The written representation and agreement referred to in subsection (d) above shall, however, not be required if the Shares to be issued pursuant to such exercise have
been registered under the Act, and such registration is then effective in respect of such Shares. 
 Section 4.4 Conditions to Issuance
of Stock Certificates 
 The Shares deliverable upon the exercise of the Option, or any portion thereof, may be either
previously authorized but unissued Shares or issued Shares, which have then been reacquired by the Company. Such Shares shall be fully paid and nonassessable. The Company shall not be required to issue or deliver any certificate or certificates for
Shares of stock purchased (if certified, or if not certified, register the issuance of such Shares on its books and records) upon the exercise of the Option or a portion thereof if the issuance of Shares upon exercise would constitute a violation of
any applicable federal, state or foreign securities laws or other law or regulations and prior to fulfillment of all of the following conditions: 
 (a) The obtaining of approval or other clearance from any state or federal governmental agency which the Committee shall, in its reasonable and good faith discretion, determine to be necessary or
advisable; 
  

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 (b) The execution by the Optionee of the Management Stockholder’s Agreement and a Sale
Participation Agreement; and 
 (c) The lapse of such reasonable period of time following the exercise of the Option as the
Committee may from time to time establish for reasons of administrative convenience or as may otherwise be required by applicable law. 
 The
inability of the Company to obtain from any regulatory body having jurisdiction the authority, if any, deemed by the Company’s legal counsel to be necessary to the lawful issuance and sale of any Shares subject to the Option will relieve the
Company of any liability in respect of the failure to issue or sell such Shares as to which such requisite authority has not been obtained. 
 Section 4.5 Rights as Stockholder 
 Except as otherwise provided in Section 2.4 of this Agreement, the
holder of an Option shall not be, nor have any of the rights or privileges of, a stockholder of the Company with respect to any Shares purchasable upon the exercise of the Option or any portion thereof unless and until certificates representing such
Shares shall have been issued by the Company to such holder or the Shares have otherwise been recorded in the records of the Company as owned by such holder. 
 ARTICLE V 
 MISCELLANEOUS 
 Section 5.1 Administration 
 The Committee shall have the power to adopt, interpret, or revoke rules for the administration, interpretation and application of the Plan. All actions taken and all interpretations and determinations made by the Committee shall be final
and binding upon the Optionee, the Company and all other interested persons. No member of the Committee shall be personally liable for any action, determination or interpretation made in good faith with respect to the Plan or the Option. In its
absolute discretion, the Board may at any time and from time to time exercise any and all rights and duties of the Committee under the Plan and this Agreement. 
 Section 5.2 Option Not Transferable 
 Neither the Option nor any
interest or right therein or part thereof shall be liable for the debts, contracts or engagements of the Optionee or his successors in interest or shall be subject to disposition by transfer, alienation, anticipation, pledge, encumbrance, assignment
or any other means whether such disposition be voluntary or involuntary or by operation of law by judgment, levy, attachment, garnishment or any other legal or equitable proceedings (including bankruptcy), and any attempted disposition thereof shall
be null and void and of no effect; provided, however, that this Section 5.2 shall not prevent transfers by will or by the applicable laws of descent and distribution or any transfer permitted in accordance with the terms and
conditions of the Management Stockholder’s Agreement or the Sale Participation Agreement. 
  

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 Section 5.3 Notices 
 Any notice to be given under the terms of this Agreement to the Company shall be addressed to the Company in care of its Secretary, and any
notice to be given to the Optionee shall be addressed to him at the last address on file with the Company. By a notice given pursuant to this Section 5.3 either party may hereafter designate a different address for notices to be given to that
party. Any notice, which is required to be given to the Optionee, shall, if the Optionee is then deceased, be given to the Optionee’s personal representative if such representative has previously informed the Company of his status and address
by written notice under this Section 5.3. Any notice shall have been deemed duly given when (i) delivered in person or (ii) enclosed in a properly addressed, sealed envelope or wrapper, deposited (with postage or fees prepaid) with a
post office or branch post office regularly maintained by the United States Postal Service or an office regularly maintained by FedEx, UPS, or comparable non-public mail carrier. Any person entitled to notice hereunder may, by written form, waive
such notice. 
 Section 5.4 Titles 
 Titles are provided herein for convenience only and are not to serve as a basis for interpretation or construction of this Agreement. 
 Section 5.5 Applicability of Plan, Management Stockholder’s Agreement and Sale Participation Agreement 
 The Option and the Shares issued to the Optionee upon exercise of the Option shall be subject to all of the terms and provisions of the Plan, the Management Stockholder’s Agreement and a Sale
Participation Agreement, to the extent applicable to the Option and such Shares. In the event of any conflict or inconsistency between the terms hereof and the terms of the Plan, the terms of the Plan shall be controlling. 
 Section 5.6 Amendment 
 Subject to Section 10 of the Plan, this Agreement may be amended only by a writing executed by the parties hereto, which specifically states that it is amending this Agreement. 
 Section 5.7 Governing Law 
 The laws of the State of Texas shall govern the interpretation, validity and performance of the terms of this Agreement regardless of the law that might be applied under principles of conflicts of laws. 
 Section 5.8 Arbitration 
 In the event of any controversy among the parties hereto arising out of, or relating to, this Agreement which cannot be settled amicably by the parties, such controversy shall be finally, exclusively and conclusively settled by mandatory
arbitration conducted expeditiously in accordance with the American Arbitration Association rules, by a single independent arbitrator. Such arbitration process shall take place within the Dallas, Texas metropolitan area. The decision of the
arbitrator shall be final and binding upon all parties hereto and shall be rendered pursuant to a written decision, which contains a detailed recital of the arbitrator’s reasoning. Judgment upon the award rendered may be entered in any court
having jurisdiction thereof. Each party shall bear its own legal fees and expenses, unless otherwise determined by the arbitrator. 
  

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 Section 5.9 Furnish Information  
 Optionee agrees to furnish to the Company all information requested by the Company to enable it to comply with any reporting or other
requirement imposed upon the Company by or under any applicable statute or regulation. 
 Section 5.10 Remedies 
 The Company shall be entitled to recover from Optionee reasonable attorneys’ fees incurred in connection with the enforcement of the
terms and provisions of this Agreement whether by an action to enforce specific performance or for damages for its breach or otherwise. 
 Section 5.11 No Liability for Good Faith Determinations 
 The Company and the members of the Committee and
the Board shall not be liable for any act, omission or determination taken or made in good faith with respect to this Agreement or the Option granted hereunder. 
 Section 5.12 Execution of Receipts and Releases 
 Any payment of cash
or any issuance or transfer of Shares or other property to Optionee, or to Optionee’s legal representative, heir, legatee or distributee, in accordance with the provisions hereof, shall, to the extent thereof, be in full satisfaction of all
claims of such persons hereunder. The Company may require Optionee or Optionee’s legal representative, heir, legatee or distributee, as a condition precedent to such payment or issuance, to execute a release and receipt therefore in such form
as it shall determine. 
 Section 5.13 No Guarantee of Interests 
 The Board and the Company do not guarantee the Common Stock of the Company from loss or depreciation. 
 Section 5.14 Company Records 
 Records of the Company regarding Optionee’s service and other matters shall be conclusive for all purposes hereunder, unless determined by the Company to be incorrect. 
 Section 5.15 Information Confidential 
 As partial consideration for
the granting of this Option, Optionee agrees that Optionee will keep confidential all information and knowledge that Optionee has relating to the manner and amount of his participation in the Plan; provided, however, that such information may be
disclosed as required by law and may be given in confidence to Optionee’s spouse, tax and financial advisors. In the event any breach of this promise comes to the attention of the Company, it shall take into consideration that breach in
determining whether to recommend the grant of any future similar award to Optionee, as a factor weighing against the advisability of granting any such future award. 
 Section 5.16 Successors 
 This Agreement shall be binding upon
Optionee, Optionee’s legal representatives, heirs, legatees and distributees, and upon the Company, its successors and assigns. 
  

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 Section 5.17 Severability 
 If any provision of this Agreement is held to be illegal or invalid for any reason, the illegality or invalidity shall not affect the
remaining provisions hereof, but such provision shall be fully severable and this Agreement shall be construed and enforced as if the illegal or invalid provision had never been included herein. 
 Section 5.18 Word Usage 
 Words used in the masculine shall apply to the feminine where applicable, and wherever the context of this Agreement dictates, the plural shall be read as the singular and the singular as the plural. 
 Section 5.19 No Assignment  
 Optionee may not assign this Agreement or any of Optionee’s rights under this Agreement without the Company’s prior written consent, and any purported or attempted assignment without such prior written consent shall be void.

 [Signatures on next page.] 
  

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 IN WITNESS WHEREOF, this Agreement has been executed and delivered by the parties
hereto. 
  

					
	ENERGY FUTURE HOLDINGS CORP.
		
	By:	 	 /s/ Robert C. Walters

		 	Name:	 	Robert C. Walters
		 	Its:	 	Executive Vice President and General Counsel
	
	 OPTIONEE:

  

	
	 /s/ Richard Landy

	 Richard Landy

 Summary of Option grants governed by this Agreement appears on the following page. 
 [Signature Page of Stock Option Agreement] 

 Summary of Option 
  

				
	 	  	Option
	 Aggregate number of Shares subject to the Option
	  	 	400,000
		
	 Grant Date
	  	 	December 31, 2009
		
	 Exercise Price
	  	$	3.50

  

 13Restricted Stock Unit Award Agreement

 Exhibit 10(hh) 
 RESTRICTED STOCK UNITS AWARD AGREEMENT 
 THIS
AGREEMENT (the “Agreement”) is made effective as of January 6, 2008 (the “Grant Date”), between Energy Future Holdings Corp., a Texas corporation (hereinafter referred to as the “Company”), and John Young, an
employee of the Company, hereinafter referred to as the “Grantee.” Capitalized terms not otherwise defined herein shall have the same meanings as in the Plan or the Management Stockholder’s Agreement (each as defined below).

 WHEREAS, pursuant to the Employment Agreement entered into between Grantee and the Company of even date herewith
(“Employment Agreement”), the Company desires to grant the Grantee shares of Common Stock, pursuant to the terms and conditions of this Agreement (the “Restricted Stock Units Award”), the 2007 Stock Incentive Plan for Key
Employees of Energy Future Holdings Corp. and its Affiliates (the “Plan”) (the terms of which are hereby incorporated by reference and made a part of this Agreement), and a Management Stockholder’s Agreement entered into by and
between the Company and the Grantee as of the date hereof (the “Management Stockholder’s Agreement”). 
 WHEREAS,
the Committee has determined that it would be to the advantage and best interest of the Company and its shareholders to grant the Restricted Stock Unit Award provided for herein to the Grantee as an incentive for increased efforts during his or her
employment with the Company or an Affiliate of the Company, and has advised the Company thereof and instructed the undersigned officer to grant said Restricted Stock Unit Award. 
 NOW, THEREFORE, in consideration of the mutual covenants herein contained and other good and valuable consideration, receipt of which is
hereby acknowledged, the parties hereto do hereby agree as follows: 
 1. Grant of the Restricted Stock Units. Subject to
the terms and conditions of the Plan, the Management Stockholder’s Agreement, and the additional terms and conditions set forth in this Agreement, the Company hereby grants to the Grantee 600,000 Restricted Stock Units. A “Restricted Stock
Unit” represents the right to receive one share of Common Stock. The Restricted Stock Units shall vest and become nonforfeitable in accordance with Section 2 hereof. 
 2. Vesting. All Restricted Stock Units shall be vested and nonforfeitable as to 100% of such shares upon the Grant Date; provided,
however, in the event the Grantee voluntarily terminates his employment with the Company without Good Reason (and not due to his Disability) prior to the second anniversary of the Grant Date, the Grantee shall forfeit all of the Restricted Stock
Units. 
 3. Entitlement to Receive Common Stock. Unless otherwise set forth herein or in the Management
Stockholder’s Agreement, the Grantee shall be entitled to receive one share of Common Stock for each Restricted Stock Unit that the Grantee holds (and has not forfeited) (such date of delivery, the “Maturity Date”), and delivery of
Common Stock hereunder shall be made on the second anniversary of the Grant Date. 
 4. Rights as a Stockholder. The
Grantee shall not have any rights of a common stockholder of the Company unless and until the Grantee becomes entitled to receive the shares of Common Stock pursuant to Section 3 above; provided, the Grantee shall be entitled to receipt of all
dividends paid on shares of Common Stock in respect of the Restricted Stock Units, which dividends shall be paid to the Grantee in cash (or Common Stock or such other property as is paid as a dividend to other holders of Common Stock) as and when
dividends are paid to other holders of Common Stock. As soon as practicable following the date that the Grantee becomes entitled to receive the shares of Common Stock pursuant to Section 3, the Company shall register the Grantee’s
ownership of the Common Stock in the Company’s stock ledger. 

 5. Legend on Certificates. The ledger entries for the Common Stock, and any
certificates representing the Common Stock, delivered to the Grantee as contemplated by Section 3 above shall bear the legend set forth in Section 2 of the Management Stockholder’s Agreement (which legend shall also be revised to make
reference to this Agreement) and shall be subject to such stop transfer orders and other restrictions as the Committee may deem advisable under the Plan or the rules, regulations, and other requirements of the Securities and Exchange Commission or
any stock exchange upon which such Common Stock is listed, and any applicable Federal or state laws, and the Committee may cause a legend or legends to be put on any such certificates to make appropriate reference to such restrictions. 

6. Transferability. The Restricted Stock Units shall not be subject to alienation, garnishment, execution or levy of any kind, and
any attempt to cause any such awards to be so subjected shall not be recognized. The shares of Common Stock acquired by the Grantee pursuant to Section 3 of this Agreement may not at any time be transferred, sold, assigned, pledged,
hypothecated or otherwise disposed of unless such transfer, sale, assignment, pledge, hypothecation or other disposition complies with the provisions of the Management Stockholder’s Agreement. 
 7. Grantee’s Employment by the Company. Nothing contained in this Agreement or in any other agreement entered into by the
Company or any of its Subsidiaries and the Grantee, other than the applicable provisions of any employment agreement entered into by and between the Grantee and the Company or any of its Subsidiaries, as applicable, (i) obligates the Company or
any Subsidiary to employ the Grantee in any capacity whatsoever or (ii) prohibits or restricts the Company or any Subsidiary from terminating the employment, if any, of the Grantee at any time or for any reason whatsoever, with or without
cause, and the Grantee hereby acknowledges and agrees that neither the Company nor any other Person has made any representations or promises whatsoever to the Grantee concerning the Grantee’s employment or continued employment by the Company or
any affiliate thereof. 
 8. Change in Capitalization. If the Company shall be reorganized, or consolidated or merged
with another corporation after the Grant Date specified above but prior to the Maturity Date, the number and kind of shares of Common Stock which may be issued with respect to the Restricted Stock Units may or may not be adjusted so as to reflect
such change, all as determined by the Committee in its sole discretion. 
 9. Withholding. It shall be a condition of the
obligation of the Company upon delivery of Common Stock to the Grantee pursuant to Section 3 above that the Grantee pay to the Company such amount as may be requested by the Company for the purpose of satisfying any liability for any federal,
state or local income or other taxes required by law to be withheld with respect to such Common Stock. The Company shall be authorized to take such action as may be necessary, in the opinion of the Company’s counsel (including, without
limitation, withholding Common Stock otherwise deliverable to the Grantee hereunder and/or withholding amounts from any compensation or other amount owing from the Company to the Grantee), to satisfy the obligations for payment of the minimum amount
of any such taxes. Notwithstanding the foregoing provisions of this Section 9, the Grantee shall, at his election, be permitted to elect to use Common Stock otherwise deliverable to the Grantee hereunder, having an equivalent Fair Market Value
to the payment that would otherwise be made by Grantee to the Company pursuant to the foregoing provisions of this Section 9, to satisfy any such obligations. For such purpose “Fair Market Value” shall have the meaning of such term as
defined in the Management Stockholder’s Agreement between the Grantee and the Company. The Grantee is hereby advised to seek his own tax counsel regarding the taxation of the grant of Restricted Stock Units made hereunder. 
  

 2 

 10. Limitation on Obligations. The Company’s obligation with respect to the
Restricted Stock Units granted hereunder is limited solely to the delivery to the Grantee of shares of Common Stock on the date when such shares are due to be delivered hereunder, and in no way shall the Company become obligated to pay cash in
respect of such obligation. This Restricted Stock Unit Award shall not be secured by any specific assets of the Company or any of its Subsidiaries, nor shall any assets of the Company or any of its Subsidiaries be designated as attributable or
allocated to the satisfaction of the Company’s obligations under this Agreement. In addition, the Company shall not be liable to the Grantee for damages relating to any delays in issuing the share certificates to him (or his designated
entities), any loss of the certificates, or any mistakes or errors in the issuance of the certificates or in the certificates themselves. 
 11. Securities Laws. Upon the delivery of any Common Stock, the Company may require the Grantee to make or enter into such written representations, warranties and agreements as the Committee may
reasonably request in order to comply with applicable securities laws or with this Agreement, consistent with the terms of the Management Stockholder’s Agreement. The delivery of the Common Stock hereunder shall be subject to all applicable
laws, rules and regulations and to such approvals of any governmental agencies as may be required. 
 12. Notices. Any
notice to be given under the terms of this Agreement to the Company shall be addressed to the Company in care of its Corporate Secretary, and any notice to be given to the Grantee shall be addressed to him at the address given beneath his signature
hereto. By a notice given pursuant to this Section 12, either party may hereafter designate a different address for notices to be given to him. Any notice that is required to be given to the Grantee shall, if the Grantee is then deceased, be
given to the Grantee’s personal representative if such representative has previously informed the Company of his status and address by written notice under this Section 12. Any notice shall have been deemed duly given when enclosed in a
properly sealed envelope or wrapper addressed as aforesaid and deposited (with postage prepaid) in a post office or branch post office regularly maintained by the United States Postal Service. 
 13. Governing Law. The laws of the State of Texas shall govern the interpretation, validity and performance of the terms of this
Agreement regardless of the law that might be applied under principles of conflicts of laws. 
 14. Restricted Stock Unit
Award Subject to Plan and Other Management Equity Agreements. The Restricted Stock Unit Award shall be subject to all terms and provisions of the Plan, the Management Stockholder’s Agreement and the Sale Participation Agreement, to the
extent applicable to the Common Stock. In the event of any conflict between this Agreement and the Plan, the terms of the Plan shall control; provided, however, for purposes of Section 3.1(c) of the Plan, all actions taken and all
interpretations and determinations made by the Committee shall be final and binding upon the Grantee, the Company and all other interested persons unless such action, interpretation or determination by the Company was not reasonable, not made in
good faith or inconsistent with substantially similar actions taken in similar situations for other Grantees generally. In the event of any conflict between this Agreement or the Plan on the one hand and the Management Stockholder’s Agreement
and/or the Sale Participation Agreement on the other hand, the terms of the Management Stockholder’s Agreement and/or the Sale Participation Agreement shall control. 
 15. Signature in Counterparts. This Agreement may be signed in counterparts, each of which shall be an original, with the same effect as if the signatures thereto and hereto were upon the same
instrument. 
  

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 IN WITNESS WHEREOF, this Agreement has been executed and delivered by the parties hereto.

  

			
	ENERGY FUTURE HOLDINGS CORP.
		
	By:	 	 /s/ Riz Chand

  

			
	GRANTEE
		
	By:	 	 /s/ John F. Young

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