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  Exhibit 10.2.49B    
    

[Mirant
Letterhead] 

November 19,
2010

Robert
Gaudette

1155 Perimeter Center West

Atlanta, GA 30338 

        Dear
Robert: 

        The
purpose of this letter is to confirm your compensation, upon the Effective Time, referenced in your offer letter provided by Julia Houston, dated April 11, 2010, on behalf of
Mirant Corporation (the "Company") for employment with RRI Energy, Inc. ("Parent") effective upon the Effective Time (as defined under the Agreement and Plan of Merger by and among the Company,
Parent and RRI Energy Holdings, Inc., dated as of April 11, 2010 (the "Merger Agreement"). This letter will be of no force or effect if the Merger Agreement terminates before the
Effective Time. 

	•
	Annual Base Salary: $350,000 

	•
	Short-term Incentive Target: 55% 

	•
	Long-term Incentive: 130% 

 

			
	 	 	Very Truly Yours,
	

 	
 	
/s/ KEVIN BOUDREAUX

  Kevin Boudreaux
 VP Administration

 

 

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Exhibit 10.2.49BQuickLinks
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  Exhibit 10.2.69    
    

 
    GENON ENERGY, INC.
  2010 OMNIBUS INCENTIVE PLAN    
    
    DIRECTORS' COMPENSATION PROGRAM    
    
    2011 RESTRICTED STOCK UNIT AWARD AGREEMENT    

	To:
	[Director]: 

        As
a non-employee member of the GenOn Energy, Inc. (the "Company") Board of Directors, you are receiving this grant of Restricted Stock Units ("Restricted Stock
Units") pursuant to
the GenOn Energy, Inc. 2010 Omnibus Incentive Plan (the "Plan"). This Award Agreement ("Agreement") and the Plan together govern your rights and set forth all of the conditions and limitations
affecting such rights. 

        Terms
used in this Agreement that are defined in the Plan will have the meanings ascribed to them in the Plan. If there is any inconsistency between the terms of this Agreement and the
terms of the Plan, the Plan's terms will supersede and replace the conflicting terms of this Agreement.  

	1.
	Terms.    Pursuant to the terms and conditions of the Plan and this Agreement, you have been
granted Restricted Stock Units as outlined below: 

 

			
	 Grant Date:
	 	 May 5, 2011

	 Number of Restricted Stock Units:
	 	                 

 

 	2.
	Vesting.    The Restricted Stock Units vest on the Grant Date (the "Vesting Date") with settlement
governed by the provisions set forth in Section 4 below.

	3.
	Book Entry Account.    Within a reasonable time after the date of this Agreement, the Company shall
instruct its transfer agent or stock plan administrator to establish a book entry account representing the Restricted Stock Units in your name effective as of the Grant Date, provided that the Company
shall retain control of such account until the Restricted Stock Units have become vested in accordance with this Agreement and shares of Common Stock have been issued or cash paid in settlement of the
Restricted Stock Units.

	4.
	Distribution of Restricted Stock Units.    

	(a)
	Distribution.    Unless otherwise provided in subsections (b) and (c) below, you
shall receive one share of Common Stock in satisfaction of each vested Restricted Stock Unit credited to your account, which shall be registered in your name and transferable by you within
90 days after the date your service as a Company director ends.

	(b)
	Deferred Distribution.    Subsection (a) notwithstanding, prior to or as of
December 31st of the calendar year ending prior to the calendar year during which your services commence for which this Award is granted, you may irrevocably elect to have all or a
portion of the Restricted Stock Units subject to this Agreement:

	(i)
	paid
in five (5) substantially equal annual installments commencing in the calendar year immediately following the calendar year during which you
terminate service as a member of the Board, commencing as soon as practicable after June 30 but no later than December 28, with the remaining installments made in each of the four
subsequent calendar years; or

	(ii)
	paid
in a lump sum in any one of the first through fifth calendar years following the calendar year during which you terminate service as a member of the
Board, commencing as soon as practicable after June 30 but no later than December 28. 

1

 

	(c)
	Cash Election.    Prior to the end of the calendar year prior to the calendar year in which the
Restricted Stock Units are granted, regardless of whether the Award is paid in a lump sum or installments, you may elect (on the form prescribed by the Company) that the Company pay you up to 33% of
the Fair Market Value of the Restricted Stock Units in cash to be settled at the same time as the stock-settled units.

 

	5.
	Stockholder Rights; Dividend Equivalents.    The Restricted Stock Units do not confer on you any
rights of a stockholder of the Company unless and until shares of Common Stock are in fact issued to you in connection with the vested Restricted Stock Units. However, if and when cash dividends or
other cash distributions are paid or distributed with respect to the Common Stock while the Restricted Stock Units are outstanding, the dollar amount of such dividends or distributions with respect to
the number of shares of Common Stock then underlying the Restricted Stock Units shall be reflected in your account. Any such cash dividends or other cash distributions shall vest and be paid in cash
if and at such times the underlying Restricted Stock Units are paid.

	6.
	Transferability.    No rights granted under this Agreement can be assigned or transferred, whether
voluntarily or involuntarily, by operation of law or otherwise, except by will or the laws of descent and distribution. In the event of any transfer or assignment of rights granted under this
Agreement in accordance with this Section 6, the person or persons, if any, to whom such rights are transferred by will or by the laws of descent and distribution shall be treated after your
death the same as you under this Agreement. Any attempted transfer or assignment of rights under this Agreement prohibited under this Section 6 shall be null and void.

	7.
	Change in Control.    Upon a Change in Control, you will receive one share of the Company's Common
Stock in satisfaction of each vested Restricted Stock Unit credited to your account or, to the extent you elected to receive up to one-third of your Restricted Stock Units in cash, a cash
payment equal to the Fair Market Value (as defined in the Plan) of the cash-settled Restricted Stock Units.

	8.
	Code Section 409A.    The Restricted Stock Units granted under this Agreement are intended
to comply with or be exempt from Code Section 409A, and ambiguous provisions of this Agreement, if any, shall be construed and interpreted in a manner consistent with such intent. Accordingly,
(i) no adjustment to the Award pursuant to Section 15 of the Plan and (ii) no substitutions of the benefits under this Agreement, in each case, shall be made in a manner that
results in noncompliance with the requirements of Section 409A of the Code, to the extent applicable.

	9.
	Notice.    Any written notice required or permitted by this Agreement shall be mailed, certified
mail (return receipt requested) or hand-delivered. Notice to the Company shall be addressed to the Company's General Counsel at 1000 Main St., Houston, TX 77002. Notice to you shall be
addressed to you at your most recent home address on record with the Company. Notices are effective upon receipt.

	10.
	Requirements of Law.    The granting of Restricted Stock Units and the issuance of shares of
Common Stock under the Plan will be subject to all applicable laws, rules, and regulations, and to such approvals by any governmental agencies or national securities exchanges as may be required.

	11.
	Miscellaneous.

	(a)
	Severability.    If any term, provision, covenant or restriction contained in this Agreement is
held by a court or a federal regulatory agency of competent jurisdiction to be invalid, void or unenforceable, the remainder of the terms, provisions, covenants and restrictions contained in this
Agreement shall remain in full force and effect, and shall in no way be affected, impaired or invalidated. 

2

 

	(b)
	Governing Law.    All issues and questions concerning the construction, validity, enforcement and
interpretation of this Agreement shall be governed by, and construed in accordance with, the laws of the State of Delaware.

 

	12.
	Acceptance of Award.    You are deemed to accept this Award and to agree that it is subject to the
terms and conditions set forth in this Agreement and the Plan unless you provide the Company written notification not later than 60 days after the Grant Date of your rejection of this Award (in
which case your Award will be forfeited and you shall have no further right or interest therein as of the Grant Date). 

 

			
	 
	 	 GENON ENERGY, INC.
	 
	 	 /s/ EDWARD R. MULLER

  Edward R. Muller
 Chairman and Chief Executive Officer

 

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Exhibit 10.2.69

GENON ENERGY, INC. 2010 OMNIBUS INCENTIVE PLAN DIRECTORS' COMPENSATION PROGRAM 2011 RESTRICTED STOCK UNIT AWARD AGREEMENTQuickLinks
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  Exhibit 10.2.70    
    

 
    GENON ENERGY
  SHORT-TERM INCENTIVE PLAN
  (As Established Effective January 1, 2012)    

 
  RECITALS    
    

        GenOn Energy, Inc., a Delaware corporation (the "Company"), hereby establishes the GenOn Energy, Inc.
Short-Term Incentive Plan (the "Plan"), for the benefit of its eligible employees and the eligible employees of its subsidiaries as follows: 

        1.    Purpose:    The purpose of the Plan is to encourage a high level of corporate
performance through the establishment of predetermined corporate, Subsidiary or business unit and/or individual goals, the attainment of which will require a high degree of competence and diligence on
the part of those Employees (including officers) of the Company or of its participating Subsidiaries selected to participate in the Plan, and which will be beneficial to the owners and customers of
the Company. 

        2.    Definitions    Unless the context otherwise clearly requires, the following definitions
are applicable to the Plan: 

        Award:    An incentive compensation award payable in cash granted to a Participant with respect to a particular Plan Year
pursuant to any applicable terms, conditions and limitations as the Committee may establish in order to fulfill the objectives of the Plan. 

        Board:    The Board of Directors of the Company. 

        Code:    The Internal Revenue Code of 1986, as amended from time to time. 

        Committee:    The Compensation Committee of the Board. 

        Company:    GenOn Energy, Inc., or any successor thereto. 

        Eligible Earnings:    Actual regular wages paid for the Plan Year, excluding overtime paid to exempt Employees, as determined by
the Company. Overtime pay for non-exempt Employees is adjusted based on Awards under this Plan in a manner consistent with the requirements of applicable wage and hour law.
Nothwithstanding the foregoing, any Participant covered by the terms of a collective bargaining agreement shall have his Eligible Earnings calculated in the manner specified in the collective
bargaining agreement and applicable law. 

        Employee:    An employee of the Company or any of its Subsidiaries who is a regular full or part-time employee and
is regularly scheduled to work at least 20 hours per week. 

        Employer:    The Company, GenOn Energy Services, LLC and any other Subsidiary which is designated by the Committee as an
Employer under this Plan. 

        Participant:    An Employee who is selected to participate in the Plan. 

        Performance Award:    An Award made to a Participant pursuant to this Plan that is subject to the attainment of one or more
Performance Goals. 

        Performance Goals:    The performance objectives of the Company, its Subsidiaries or its business units and/or individual
Participants established for the purpose of determining the level of Awards, if any, earned during a Plan Year. 

        Plan:    This GenOn Energy Short-Term Incentive Plan, as amended from time to time. 

        Plan Year:    The calendar year. 

        Savings Plan:    The GenOn Energy Savings Plan, as amended and restated effective January 1, 2011, and as thereafter
amended, and any successor plan adopted by the Company. 

        Subsidiary:    A subsidiary corporation with respect to the Company as defined in Section 424(f) of the Code. 

 

        A
pronoun or adjective in the masculine gender includes the feminine gender, and the singular includes the plural, unless the context clearly indicates otherwise. 

        3.    Participation:    The Committee (or its appropriately designated delegate) shall select
the Employees who will be Participants for each Plan Year. Only Employees who are employed on the last day of the Plan Year are eligible for the payment of an Award under the Plan, except as provided
in Section 7(c). No Employee shall at any time have the right (a) to be selected as a Participant in the Plan for any Plan Year, (b) if so selected, to be entitled to an Award, or
(c) if selected as a Participant in one Plan Year, to be selected as a Participant in any subsequent Plan Year. 

        No
Employee whose terms and conditions of employment are governed by a current or expired collective bargaining agreement shall be eligible to participate in the Plan, unless eligibility
and participation in the Plan has been agreed to as part of the collective bargaining agreement. 

        The
terms and conditions under which a Participant may participate in the Plan shall be determined by the Committee (or its appropriately designated delegate) in its sole discretion. 

        4.    Plan Administration:    The Plan shall be administered by the Committee. All decisions
of the Committee shall be binding and conclusive on the Participants. The Committee, on behalf of the Participants, shall enforce this Plan in accordance with its terms and shall have all powers
necessary for the accomplishment of that purpose, including, but not by way of limitation, the following powers: 

        (a)   To
select the Participants; 

        (b)   To
interpret, construe, approve and adjust all terms, provisions, conditions and limitations of this Plan; 

        (c)   To
decide any questions arising as to the interpretation or application of any provision of the Plan; 

        (d)   To
prescribe forms and procedures to be followed by Employees for participation in the Plan, or for other occurrences in the administration of the Plan; 

        (e)   To
establish the terms and conditions of any Agreement [not defined herein] under which an Award may be earned and paid; and 

        (f)    In
addition to all other powers granted herein, the Committee shall make and enforce such rules and regulations for the administration of the Plan as are not
inconsistent with the terms set forth herein. 

        No
member of the Committee or officer of the Company to whom the Committee has delegated authority in accordance with the provisions of Section 5 of this Plan shall be liable for
anything done or omitted to be done by him, by any member of the Committee or by any officer of the Company in connection with the performance of any duties under this Plan, except for his own willful
misconduct or as expressly provided by statute. 

        5.    Delegation of Authority:    The Committee has delegated to the Company's Chief Executive
Officer and to other senior officers of the Company its duties under this Plan (including, but not limited to, its authority to select Participants and determine Award amounts) pursuant to such
conditions or limitations as the Committee may establish. 

        6.    Awards:    The Committee shall determine the terms and conditions of Awards to be made
under this Plan and shall designate from time to time the individuals who are to be the recipients of Awards. All or part of an Award may be subject to conditions established by the Committee or its
delegate, which may include, but are not limited to, continuous service with the Company and its Subsidiaries, achievement of specific individual and/or business objectives, increases in specified
indices, attainment of specified growth rates and other comparable measurements of performance. Unless 

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specified
otherwise by the Committee, the target amount payable pursuant to an Award shall be based on a percentage of the Participant's Eligible Earnings. 

        An
Award may be in the form of a Nonqualified or Qualified Performance Award. 

        (a)   Nonqualified Performance Awards:    Performance Awards granted to Employees that are not intended to qualify as
qualified performance-based compensation under Code Section 162(m) shall be based on achievement of such Performance Goals and be subject to such terms, conditions and restrictions as the
Committee or its delegate shall determine. 

        (b)   Qualified Performance Awards:    A Qualified Performance Award shall be paid, vested or otherwise deliverable
solely on account of the attainment of one or more pre-established, objective Performance Goals established by the Committee prior to the earlier to occur of (x) 90 days
after the commencement of such period of service to which the Performance Goal relates and (y) the lapse of 25% of such period of service (as scheduled in good faith at the time the goal is
established), and in any event while the outcome is substantially uncertain. A Performance Goal is objective if a third party having knowledge of the relevant facts could determine whether the goal is
met. Such a Performance Goal may be based on one or more business criteria that apply to the individual, one or more business units of the Company, or the Company as a whole. Performance Goals shall
be based upon targets established by the Committee with respect to one or more of the following financial factors, as applied to the Company or a business unit, as
applicable: 

	•
	revenue and income measures (which may include various revenue, gross margin, income from operations, net income, net
sales, earnings per share, earnings before interest, taxes, depreciation and amortization ("EBITDA"), adjusted EBITDA, earnings before interest and taxes ("EBIT") and economic value added ("EVA")
measures;   

	•
	expense measures (which may include various costs of goods sold, , operating and maintenance expenses, general and
administrative expenses and overhead costs measures);   

	•
	operating measures (which may include various productivity, total costs, operating income, funds from operations, cash
from operations, after-tax operating income, market share, margin, sales volumes, availability, commercial capacity factor and total margin capture factor measures);  

	•
	cash flow measures (which may include various net cash flow from operating activities and working capital, adjusted cash
flow and free cash flow measures);   

	•
	liquidity measures (which may include various earnings before or after the effect of certain items such as interest,
taxes, depreciation and amortization measures);   

	•
	leverage measures (which may include various debt-to-equity ratio, gross debt and net debt
measures);   

	•
	market measures (which may include various market share, stock price, growth measure, total shareholder return and market
capitalization measures);   

	•
	return measures (which may include various return on equity, return on assets and return on invested capital measures);  

	•
	corporate value measures (which may include various compliance, safety, environmental and personnel measures); and  

	•
	other measures such as those relating to acquisitions, dispositions or customer satisfaction. 

Unless
otherwise stated, a Performance Goal need not be based upon an increase or positive result under a particular business criterion and could include, for example, maintaining the status quo or 

3

 

limiting
economic losses (measured, in each case, by reference to specific business criteria), and may also be based on performance relative to a designated peer group. 

        Prior
to the payment of any compensation based on the achievement of Performance Goals, the Committee must certify that applicable Performance Goals and any of the material terms thereof
were, in fact, satisfied. The Committee in its sole discretion may increase or decrease the amount payable pursuant to a Nonqualified Performance Award. The Committee in its sole discretion may
decrease the amount payable pursuant to a Qualified Performance Award, but in no event shall the Committee have discretion to increase the amount payable pursuant to a Qualified Performance Award in a
manner inconsistent with the requirements for qualified performance-based compensation under Code Section 162(m). In interpreting Plan provisions applicable to Qualified Performance Awards and
related Performance Goals, it is the intent of the Plan to conform with the standards of Code Section 162(m) applicable to qualified performance-based compensation, and the Committee in
establishing such Performance Goals and interpreting the Plan shall be guided by such provisions. Subject to the foregoing provisions, the terms, conditions and limitations applicable to any
Performance Awards pursuant to this Plan shall be determined by the Committee. 

        7.    Payment of Awards:    The Committee has sole and absolute authority and discretion to
determine the time and manner in which Awards, if any, shall be paid under this Plan, subject to Section 7(b) below. Generally, however, the following provisions may apply: 

        (a)   Form of Payment    Payment of Awards shall be made in cash and may be subject to such restrictions as the
Committee shall determine. 

        (b)   Date of Payment    Except as provided under Section 7(c), payment of all Awards shall be made as soon as
practicable (as determined by the Committee) following the close of the Plan Year, but in no event later than March 15th immediately following the close of the Plan Year (the "Payment
Date"). 

        (c)   Employment Required:    Except as provided below, Participants must be Employees on the Payment Date in order
to receive payment of an Award. Except as provided below, if the Participant is not an Employee on the Payment Date for any reason, including without limitation resignation, severance, layoff, or
termination with or without cause, the Participant will not be entitled to Payment of any Award, whether in full or prorated. 

        (1)   Death or Disability:    A Participant who dies or terminates employment under circumstances establishing
eligibility for disability benefits under the Company's long-term disability plan may be entitled to receive payment of an Award as follows: 

          (i)  A
Participant who is employed during the calendar year in which his employment terminates due to Death or Disability, may receive payment of the current year Award the
Participant would have received had the goals with respect to the Participant's Award been met at the target level based on his compensation as of the Participant's date of Death or Disability,
prorated based on the number of days the Participant was employed during the current Plan Year. 

         (ii)  A
Participant whose employment terminates due to Death or Disability before the date on which Awards are paid out for the prior calendar year, or the date on which the
Company announces that Awards for the prior calendar year will not be paid, may receive payment of the prior-year Award the Participant would have received had the goals with respect to
the Participant's Award been met at the target level, prorated based on the number of days the Participant was employed during the prior Plan Year. 

        (iii)  Payments
under this Section 7(c)(1) shall be made as soon as practicable following the date of the Participant's death or disability, but no later than
30 days after 

4

 

the
date of the Participant's death or disability. If a Participant who terminates due to disability resumes employment during the same Plan Year in a position qualifying the Participant to resume
participation in the Plan, any additional payment for the Plan Year received on the Payment Date will be prorated based on days worked during the Plan Year subsequent to the Participant's return to
work. 

        (2)   Retirement:    A Participant who retires on or after age 55 with 5 years of service and notifies the
Company of his or her retirement date at least 4 weeks prior to his or her termination date may be entitled to receive payment of an Award as follows: 

          (i)  A
Participant who is employed during the calendar year in which his employment terminates due to Retirement may receive payment of the current year Award the
Participant would have received based on the results for the year in which the Participant retired and based on his compensation as of the Participant's date of Retirement, prorated based on the
number of days the Participant was employed during the current Plan Year. 

         (ii)  A
Participant whose employment terminates due to Retirement before the date on which Awards are paid out for the prior calendar year, or the date on which the Company
announces that Awards for the prior calendar year will not be paid, may receive payment of the prior-year Award the Participant would have received based on results for the prior year. 

        (iii)  Payments
under this Section 7(c)(2) shall be made on the Payment Date for the Plan Year in which the Participant retires. If a Participant who terminates due to
Retirement resumes employment during the same Plan Year in a position qualifying the Participant to resume participation in the Plan, any additional payment for the Plan Year received on the Payment
Date will be prorated based on days worked during the Plan Year subsequent to the Participant's return to work. 

        (iv)  A
Participant who retires on or after age 55 with 5 years of service who does not notify the Company at least 4 weeks prior to his or her termination date
will not be entitled to Payment of any Award. 

        8.    Assignability:    Unless otherwise determined by the Committee and provided in the
Agreement, no Award or any other benefit under this Plan shall be assignable or otherwise transferable, except by will or the laws of descent and distribution. Any attempted assignment of an Award or
any other benefit under this Plan in violation of this Section 8 shall be null and void. 

        9.    Tax Withholding:    The Company shall have the right to withhold applicable taxes from
any Award payment and to take such other action as may be necessary in the opinion of the Company to satisfy all obligations for withholding of such taxes. 

        10.    Finality of Determinations:    Any determination by the Committee in carrying out or
administering this Plan shall be final and binding for all purposes and upon all interested persons and their heirs, successors, and personal representatives. 

        11.    Employee Rights Under the Plan:    No Employee or other person shall have any claim or
right to be granted an Award under this Plan. Neither the Plan nor any action taken thereunder shall be construed as giving an Employee any right to be retained in the employ of the Company or an
Employer. No Participant shall have any lien on any assets of the Company or an Employer by reason of any Award made under this Plan. 

        12.    Amendment, Modification, Suspension or Termination:    The Board may amend, modify,
suspend or terminate this Plan for the purpose of meeting or addressing any changes in legal requirements or for any other purpose permitted by law, except that (i) no amendment or alteration
that would 

5

 

adversely
affect the rights of any Participant under any Award previously granted to such Participant shall be made without the consent of such Participant and (ii) no amendment or alteration
shall be effective prior to its approval by the stockholders of the Company; however clause (ii) shall only apply if, and to the extent, such approval is required by applicable legal
requirements. 

        13.    Other Plans:    The Award payments under this Plan shall be considered compensation
under the Savings Plan. 

        14.    Governing Law:    This Plan and all determinations made and actions taken pursuant
hereto, shall be governed by and construed in accordance with the laws of the State of Texas. 

        IN
WITNESS WHEREOF, the Company has executed this Plan this 4th day of May, 2011, but effective as of January 1, 2012. 

 

			
	 	 	 GENON ENERGY, INC.
	

 	
 	
/s/ KAREN D. TAYLOR

  Karen D. Taylor
 Senior Vice President—Human Resources and Administration

 

 6

QuickLinks

Exhibit 10.2.70

GENON ENERGY SHORT-TERM INCENTIVE PLAN (As Established Effective January 1, 2012)

RECITALS

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