Document:

Agreement with Charles E. Niemier

 Exhibit 10.2 
 SEPARATION AND RETIREMENT AGREEMENT 
 THIS RETIREMENT AGREEMENT (this
“Agreement”) is made as of June 6, 2007 by and between BIOMET, INC., an Indiana corporation (“Company”), and Charles E. Niemier (“Executive”). 
 WHEREAS, Executive has elected to retire from the Company and to resign all his positions with the Company effective as of June 18, 2007;

 WHEREAS, the Company is currently negotiating a sale that would result in a Change in Control Event should the sale be consummated;

 WHEREAS, the parties have agreed to resolve certain matters related to Executive’s retirement; 
 NOW, THEREFORE, in consideration of the foregoing premises and the respective agreements hereinafter set forth and the mutual benefits to be derived
herefrom, Company and Executive hereby agree as follows: 
 1. Retirement and Resignation. Effective as of June 18, 2007 (the
“Separation Date”), Executive hereby retires from the Company and, as a consequence, voluntarily resigns his employment and all positions with the Company and all of its affiliates, including without limitation Executive’s
position as Senior Vice President, Biomet, Inc., President EBI, L.P., Biomet Spine and Biomet Trauma; provided that Executive shall retain his position as a member of the Company’s Board of Directors (the “Board”). 

2. Severance. The parties acknowledge and agree that Executive’s termination of employment constitutes a “Qualified Termination”
under the Biomet, Inc. Executive Severance Plan (the “Severance Plan”). Commencing on the Effective Date (as defined below), Executive shall be entitled to receive the applicable payments and benefits specified in the Severance Plan
until the occurrence of a Change in Control Event, at which point Executive shall no longer have any rights to benefits or payments thereunder; provided that in lieu of the provisions regarding options provided in 5.01(e) of the Severance
Plan, the vesting of and exercisability of Executive’s options shall be covered exclusively by Section 3 of this Agreement; provided further that in lieu of the car allowance provided in 5.01(c) of the Severance Plan, executive
shall be granted full ownership of the 2001 BMW 525i (VIN WBADT43421GX24535) currently provided by the Company; provided further that the pro-rated portion of the Participant’s target bonus payable pursuant to 5.01(d) shall be 100% of
his target bonus established for fiscal year 2007 (50% of which Executive acknowledges he has previously received). Executive and the Company hereby agree that (i) the Change in Control Agreement dated as of September 20, 2006 by and
between Executive and the Company (the “CIC Agreement”) will continue in effect for the six-month period following the Separation Date (the “Tail Period”); (ii) Executive’s termination of employment will
be considered to be an Anticipatory Termination (as defined in Section 3.04(a) of the CIC Agreement) if a Change in 
  

 Control as defined in the CIC Agreement that also constitutes a change in ownership or effective control of the Company,
or in the ownership of a substantial portion of the assets of the Company within the meaning of Section 409A(a)(2)(A)(v) of the Internal Revenue Code) occurs during the Tail Period (a “Change in Control Event”); and
(iii) Executive shall be entitled to the payments and benefits (as modified by this Agreement) applicable under the CIC Agreement in the event of an Anticipatory Termination if a Change in Control Event occurs upon the terms and conditions
specified in the CIC Agreement (including, without limitation, execution, delivery and non-revocation of the release contemplated by the CIC Agreement). In the event of a Change in Control Event, the payments and benefits to which Executive is
entitled under the CIC Agreement shall be modified as follows: 
 (a) Executive shall not be entitled to any payment or benefits pursuant to
Section 3.01(a)(i), Section 3.01(c), Section 3.01(d), or Section 3.04(b)(E) of the CIC Agreement. 
 (b) The amount
Executive is eligible to receive pursuant to Section 3.01(a)(ii) of the CIC Agreement shall be reduced by the payments Executive previously received pursuant to Section 5.01(a) and (c) of the Severance Plan. 
 (c) Executive’s Date of Termination (within the meaning of the CIC Agreement) shall be deemed to be the Separation Date. 
 (d) Executive shall be entitled to retain the computer, mobile phone, and mobile phone number currently provided to him by the company; provided that as
of the Separation Date Company shall no longer reimburse Employee for any costs associated with the operation of such computer and mobile phone. 
 In the
event a Change in Control Event does not occur during the Tail Period, Executive shall be paid on the date that is thirty days following the end of the Tail Period the benefits and payments described in Section 3.01(a)(ii) of the CIC Agreement,
reduced by the payments Executive previously received pursuant to Section 5.01(a) and (c) of the Severance Plan. To the extent required by Code Section 409A(a)(2)(B)(i), any amounts that cannot be paid consistently with
Section 409A of the Code during the six month period following Executive’s Separation Date shall be deferred and paid in a lump sum within 10 days of the end of such six-month period. 
 3. Treatment of Options. Executive acknowledges that the Company is conducting an investigation (the “Investigation”) to
determine the extent to which compensatory options previously granted by the Company were granted with an exercise price lower than the fair market value of the Company’s common stock on the applicable date of grant. The Company and Executive
hereby agree to the following with respect to options granted to him by the Company. 
 (a) Previously Exercised Options. Executive
shall repay to the Company in accordance with this Section 3(a) the aggregate amount (the “Discount”) by which the exercise price of any or all compensatory options granted to Executive by the Company that Executive exercised
prior to the date hereof was less than the fair market value of the Company’s common stock on the applicable date of grant of each such option. The Company shall 

  

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determine the amount of the Discount in good faith and, absent manifest error, the Company’s determination shall be final, binding and conclusive.
Executive shall pay the amount of the Discount to the Company promptly after, but in any event within thirty days after, receipt of a written notice from the Company setting out in reasonable detail the calculation of the Discount. Notwithstanding
anything to the contrary in this Agreement, the maximum amount that Executive will pay pursuant to this Section 3(a) is $227,033. Without in any way limiting Executive’s obligation to repay the Discount directly, Executive hereby
authorizes the Company to withhold the Discount from any and all amounts otherwise payable to Executive hereunder or otherwise in the event Executive fails within thirty days of receipt of the written notice specified above to pay the Discount.

 (b) Vested Options. Executive agrees that, with respect to all unexercised options previously granted to Executive that are vested
and exercisable on the date hereof (the “Vested Options”), the Company may, without any further need for Executive’s consent, increase the exercise price of such options to an amount the Company determines in good faith is
equal to the fair market value of the Company’s common stock on the date such options were originally granted. Absent manifest error, the Company’s determination of the appropriate exercise price shall be final, binding and conclusive.
Executive agrees to execute any document related to such adjustment reasonably requested by the Company. In the event Executive exercises any options described in this Section 3(b) prior to any adjustment contemplated hereby, such options shall
be treated in accordance with Section 3(a). Vested Options shall otherwise be exercisable after the Separation Date in accordance with their terms, it being agreed that the Vested Options shall remain exercisable until the earlier of
(i) the date such Accelerated Options would otherwise expire (in the absence of Executive’s retirement), (ii) the fifth anniversary of the Separation Date, or (iii) the date such options are cashed out in connection with a Change
in Control Event. 
 (c) Unvested Options. Effective as of the Effective Date, the Company agrees to accelerate the vesting and
exercisability of the options described on Exhibit A (the “Accelerated Options”), which Accelerated Options shall then remain exercisable after the Separation Date in accordance with their terms, it being agreed that the Accelerated
Options shall remain exercisable until the earlier of (i) the date such Accelerated Options would otherwise expire (in the absence of Executive’s retirement), (ii) the fifth anniversary of the Separation Date, or (iii) the date
such options are cashed out in connection with a Change in Control Event. Executive acknowledges and agrees that he will not be entitled to, and hereby waives and entitlement he might otherwise have to, accelerated vesting of any other options other
than the Accelerated Options as a consequence of his retirement from the Company. 
 (d) If the Company agrees to accept liability for or
otherwise reimburse all other present or former executive officers for adverse tax consequences resulting from the mispricing of stock options, the Company agrees to provide the same benefit to Executive. 
 4. Release of Claims. 
 (a) General
Release. In consideration of the Company’s obligations hereunder and acceptance of Executive’s retirement and resignation, Executive, on behalf of 

  

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himself and Executive’s heirs, successors, and assigns, hereby knowingly and voluntarily releases and forever discharges the Company and its
subsidiaries and affiliates, together with all of their respective current and former officers, directors, consultants, agents, representatives and employees, and each of their predecessors, successors and assigns (collectively, the
“Releasees”), from any and all debts, demands, actions, causes of actions, accounts, covenants, contracts, agreements, claims, damages, omissions, promises, and any and all claims and liabilities whatsoever, of every name and
nature, known or unknown, suspected or unsuspected, both in law and equity (“Claims”), which Executive ever had, now has, or may hereafter claim to have against the Releasees by reason of any matter, cause or thing whatsoever
arising from the beginning of time to the time Executive executes this Agreement (the “General Release”). This General Release of Claims shall apply to any Claim of any type, including, without limitation, any and all Claims of any
type that Executive may have arising under the common law, under Title VII of the Civil Rights Act of 1964, the Civil Rights Act of 1991, the Age Discrimination in Employment Act (“ADEA”), the Older Workers
Benefit Protection Act, the Americans With Disabilities Act, the Family and Medical Leave Act, the Employee Retirement Income Security Act (“ERISA”), the Sarbanes-Oxley Act of 2002 or the California Fair Employment and Housing Act,
the California Family Rights Act, or the California Labor Code section 1400 et seq., each as amended, and any other Federal, state or local statutes, regulations, ordinances or common law, or under any policy, agreement,
contract, understanding or promise, written or oral, formal or informal, between any of the Releasees and Executive, and shall further apply, without limitation, to any and all Claims in connection with, related to or arising out of Executive’s
employment, or the termination of Executive’s employment, with the Company; provided, however, that this General Release shall not apply to or impair (i) claims for vested benefits pursuant to any other Company employee
benefit plan, as defined in ERISA, in which Executive were a participant before the Separation Date; (ii) any rights to indemnification Executive may have under the charter, by-laws of the Company or applicable law; or (iii) any claims
that may arise from any violation or breach of this Agreement (collectively, “Excluded Claims”). For the purpose of implementing a full and complete release, Executive understands and agrees that this Agreement is intended to
include all claims, if any, which Executive may have and which Executive does not now know or suspect exist in Executive’s favor against the Company or any of the Releasees and that this Agreement extinguishes those claims. 
 (b) No Claims. Executive represents and warrants that Executive has not filed any complaints or charges with any court or administrative agency
against the Company or any of the Releasees, which have not been dismissed, closed, withdrawn or otherwise terminated on or before the date of this Agreement. Executive further represents and warrants that Executive has not assigned or transferred
or attempted to assign or transfer, nor will Executive attempt to assign or transfer, to any person or entity not a party to this Agreement any of the Claims Executive is releasing in this Agreement. Furthermore, by signing this General Release of
Claims, Executive represents and agrees that Executive will not be entitled to any personal recovery in any action or proceeding that may be commenced on Executive’s behalf arising out of the matters released hereby. The Executive understands
and agrees that if he commences, continues, joins in, or in any other manner attempts to assert any lawsuit released herein against the Company, or otherwise violates the terms of the General Release, he shall be required to return all payments paid
to him by the Company pursuant to this Agreement (together with interest thereon), and he agrees to reimburse the Company for all attorneys’ fees and expenses incurred by Company in defending against such a lawsuit, provided that the right to

  

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receive such payments is without prejudice to Company’s other rights hereunder, including any release of any and all Claims (other than the Excluded
Claims) against the Company. The Executive understands and agrees that the Company’s payments to him and the signing of this Agreement do not in any way indicate that he has any viable Claims against the Company or that the Company admits any
liability to him whatsoever. 
 (c) ADEA/OWBPA Waiver. Executive specifically releases and waives any right or claim against
the company arising out of his employment or his resignation of employment with the Company under the Age Discrimination in Employment Act, as amended, 29 U.S.C. § 621 et seq. (“ADEA”) and the Older Workers
Benefit Protection Act, 29 U.S.C. § 621 et seq. (“OWBPA”) (such release and waiver referred to as the “Waiver”). Executive understands and agrees that (i) this Agreement is written in a
manner that he understands; (ii) he does not release or waive rights or claims that may arise after he signs this Agreement; (iii) he waives rights and claims he may have had under the OWBPA and the ADEA, but only in exchange for payments
and/or benefits in addition to anything of value to which he is already entitled; (iv) Executive has been advised to consult with an attorney before signing this Agreement; (v) he has twenty-one (21) calendar days (the “Offer
Period”) from receipt of this Agreement to consider whether to sign it. If Executive signs before the end of the Offer Period, Executive acknowledges that his decision to do so was knowing, voluntary, and not induced by fraud,
misrepresentation, or a threat to withdraw, alter, or provide different terms prior to the expiration of the Offer Period. Executive agrees that changes or revisions to this Agreement, whether material or immaterial, do not restart the running of
the Offer Period; (vi) Executive has seven (7) calendar days after signing this Agreement to revoke the waiver (the “Revocation Period”) and (vii) this Waiver shall not become effective or enforceable until the
Revocation Period has expired. If Executive revokes the Waiver, Executive shall not be entitled to any benefits under the Severance Plan or CIC Agreement. To be effective, the revocation must be in writing and received by Jeffrey R. Binder, Chief
Executive Officer, at the Company’s address set forth in Section 8. The “Effective Date” means the date as of which the Revocation Period expires without Executive having revoked the Waiver. 
 5. Continuing Indemnification. Subject to the terms and conditions of Section 6.3 of the Company’s Restated Articles of Incorporation
and, to the extent relevant, the Company’s by-laws, in each case, as in effect on the date hereof, the Company will advance and pay reasonable expenses (including attorneys’ fees but not including judgments, penalties, fines, or
settlements) incurred by Executive in connection with (a) proceedings arising out the Company’s historic grant of compensatory stock options; and (b) any other proceeding against or involving the Company in which Executive may be
involved arising out of his position as a director, officer, or employee of the Company; provided that the Company’s obligation to advance and pay such expenses shall be subject to the terms of any undertaking signed by Executive prior to the
date hereof (which, under certain circumstances, requires repayment of expenses paid or advanced) or, in the absence of such an undertaking, to the Company’s usual and customary practice with regard to its current and former employees in such
matters. The Company will indemnify Executive against any judgment, penalty, fine or settlement related to any of the matters described in the preceding sentence on the terms and conditions provided in the Company’s Restated Articles of
Incorporation and, to the extent relevant, by-laws, in each case, as in effect on the date hereof. 
  

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 6. Ongoing Cooperation. As part of the consideration being provided to Executive under this
Agreement, the Company expects Executive to make himself reasonably available to Company and/or its legal counsel and other designated representatives or agents, in connection with all investigations, audits, suits, claims or disputes regarding the
Company or its affiliates. As a result, the Executive and Company agree to the following: 
 (a) Executive shall respond to the best of
Executive’s ability to reasonable inquiries from Company concerning ongoing matters within Executive’s knowledge and/or former area of responsibility and to assist Company in transitioning those matters to other personnel. 
 (b) Executive shall fully cooperate with Company and/or its legal counsel and other designated representatives or agents in providing information in
connection with threatened, pending or future investigations or litigation, including giving depositions and appearing for live interviews and proceedings. 
 7. Confidential Information and Non-Compete-Agreement. The Executive hereby agrees to be bound by the provisions of the Confidentiality and Non-Compete Agreement contained in Exhibit A of the CIC Agreement.

 8. Notices. Any notice, report or payment required or permitted to be given or made under this Agreement by one party to the other
shall be deemed to have been duly given or made if personally delivered or, if mailed, when mailed by registered or certified mail, postage prepaid, to the other party at the following addresses (or at such other address as shall be given in writing
by one party to the other): 
  
 If to Executive:

 Charles E. Niemier 
 1600 South Meadow Drive 
 Warsaw, IN 46580 
 with a copy to: 
 Mark Siurek, L.L.P. 
 3355 West Alabama 
 Suite 1010 
 Houston, TX 77098 
 If to Company: 
 Biomet, Inc. 
 56 E. Bell Drive 
 P.O. Box 587 
 Warsaw, Indiana 46581-0587 
 Attn: General Counsel 
  

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 with a copy to: 
 Richard Porter, Esq. 
 Kirkland & Ellis LLP 
 200 East Randolph Drive 
 Chicago, Illinois 60601 
  
 9. Entire Agreement. This Agreement and the other agreements specifically referred to herein (a) contain the complete and entire understanding
and agreement of Executive and Company with respect to the subject matter hereof; and (b) supersedes all prior and contemporaneous understandings, conditions and agreements, oral or written, express or implied, respecting the subject matter
hereof. 
 10. Modification or Waiver. The provisions of this Agreement may be amended and waived only with the prior written consent
of the Company and Executive. No course of dealing between the parties to this Agreement shall be deemed to affect or to modify, amend or discharge any provision or term of this Agreement. No delay on the part of Company or Executive in the exercise
of any of their respective rights or remedies shall operate as a waiver thereof, and no single or partial exercise by Company or Executive of any such right or remedy shall preclude other or further exercises thereof. A waiver of right or
remedy on any one occasion shall not be construed as a bar to or waiver of any such right or remedy on any other occasion. 
 11.
Severability. Whenever possible each provision and term of this Agreement shall be interpreted in such manner as to be effective and valid under applicable law, but if any provision or term of this Agreement shall be held to be prohibited by
or invalid under such applicable law, then such provision or term shall be ineffective only to the extent of such prohibition or invalidity, without invalidating or affecting in any manner whatsoever the remainder of such provision or term or the
remaining provisions or terms of this Agreement. 
 12. No Strict Construction. The language used in this Agreement shall be deemed to
be the language chosen by the parties hereto to express their mutual intent, and no rule of strict construction shall be applied against any party. 
 13. Executive’s Representations. Executive represents and warrants to Company that (i) his execution, delivery and performance of this Agreement does not and shall not conflict with, or result in the breach of or violation
of, any other agreement, instrument, order, judgment or decree to which he is a party or by which he is bound and (ii) he is not a party to or bound by any employment agreement, non-competition agreement or confidentiality agreement with any
other person or entity that would prevent him from performing under this Agreement. 
 14. Counterparts. This Agreement may be
executed and delivered by each party hereto in separate counterparts, each of which when so executed and delivered shall be deemed an original and both of which taken together shall constitute one and the same agreement. 
 15. Successors and Assigns. This Agreement will be binding upon and inure to the benefit of the Company and any successor to the Company,
including without limitation any 

  

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persons acquiring directly or indirectly all or substantially all of the business or assets of the Company whether by purchase, merger, consolidation,
reorganization or otherwise (and such successor shall thereafter be deemed the “Company” for purposes of this Agreement) and such successor shall deliver a written affirmation of its obligations hereunder to Executive. This Agreement will
inure to the benefit of and be enforceable by Executive’s personal or legal representatives, executors, administrators, successors, heirs, and legatees, but otherwise will not be assignable, transferable or delegable by Executive. This
Agreement is personal in nature and neither of the parties hereto shall, without the consent of the other, assign, transfer or delegate this Agreement or any rights or obligations hereunder except as otherwise expressly provided in this
Section 15. 
 16. Choice of Law, Jurisdiction and Venue. This Agreement shall be governed by and construed in accordance with
the domestic laws of the State of Indiana, without giving effect to any choice of law or conflict of law provision or rule (whether of the State of Indiana or any other jurisdiction) that would cause the application of the laws of any jurisdiction
other than the State of Indiana. All actions and proceedings arising out of or relating to this Agreement shall be heard and determined in any Indiana state or federal court sitting in Indianapolis, Indiana, and each party hereto hereby irrevocably
accepts and consents to the exclusive personal jurisdiction of those courts for such purpose. In addition, each party hereto hereby irrevocably waives, to the fullest extent permitted by law, any objection which he or it may now or hereafter have to
the laying of venue of any action or proceeding arising out of or relating to this Agreement or any judgment entered by any court in respect thereof brought in any state or federal court sitting in the city of Indianapolis, Indiana and further
irrevocably waives any claim that any action or proceeding brought in any such court has been brought in an inconvenient forum. 
 17.
Mutual Waiver of Jury Trial. BECAUSE DISPUTES ARISING IN CONNECTION WITH COMPLEX TRANSACTIONS ARE MOST QUICKLY AND ECONOMICALLY RESOLVED BY AN EXPERIENCED AND EXPERT PERSON AND THE PARTIES WISH APPLICABLE STATE AND FEDERAL LAWS TO APPLY
(RATHER THAN ARBITRATION RULES), THE PARTIES DESIRE THAT THEIR DISPUTES BE RESOLVED BY A JUDGE APPLYING SUCH APPLICABLE LAWS. THEREFORE, TO ACHIEVE THE BEST COMBINATION OF THE BENEFITS OF THE JUDICIAL SYSTEM AND OF ARBITRATION, EACH PARTY TO THIS
AGREEMENT HEREBY WAIVES ALL RIGHTS TO TRIAL BY JURY IN ANY ACTION, SUIT, OR PROCEEDING BROUGHT TO RESOLVE ANY DISPUTE BETWEEN OR AMONG ANY OF THE PARTIES HERETO, WHETHER ARISING IN CONTRACT, TORT, OR OTHERWISE, ARISING OUT OF, CONNECTED WITH,
RELATED OR INCIDENTAL TO THIS AGREEMENT, THE TRANSACTIONS CONTEMPLATED HEREBY AND/OR THE RELATIONSHIP ESTABLISHED AMONG THE PARTIES HEREUNDER. 
 18. Delivery by Facsimile. This Agreement, the agreements referred to herein, and each other agreement or instrument entered into in connection herewith or therewith or contemplated hereby or thereby, and any amendments hereto or
thereto, to the extent signed and delivered by means of a facsimile machine, shall be treated in all manner and respects as an original agreement or instrument and shall be considered to have the same binding legal effect as if it were the original
signed version thereof delivered in person. 
  

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 19. Survivorship. Any provision of this Agreement, that by its terms, is intended to continue to
apply after any termination or expiration of the Agreement shall survive such termination or expiration and continue to apply in accordance with its terms. 
 * * * * * 
  

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 IN WITNESS WHEREOF, Executive and Company have caused this Agreement to be duly executed and delivered on
the date and year first above written. 

			
	BIOMET, INC.
		
	By:	 	  
	Its:	 	

	
	
	  
	 Charles E. Niemier

  

 - 10 -Capital Contribution Agreement

 EXHIBIT 10.1 
 EXECUTION VERSION 
 CAPITAL CONTRIBUTION AGREEMENT 
 This CAPITAL CONTRIBUTION AGREEMENT (this “Agreement”), dated as of May 31, 2007, is entered into by and among U.S. Energy Biogas
Corp., a Delaware corporation (the “Company”), U.S. Energy Systems, Inc., a Delaware corporation (“Holdings”), and Silver Point Finance, LLC (the “Administrative Agent”). 
 RECITALS: 
 WHEREAS, the
Company wishes to obtain financing pursuant to that certain Credit and Guaranty Agreement, dated as of May 31, 2007 (as amended, supplemented or otherwise modified, the “Credit Agreement”), by and among the Company, certain
subsidiaries of the Company, as guarantors, the lenders party thereto from time to time (the “Lenders”), and the Administrative Agent, as administrative agent, collateral agent and lead arranger, the proceeds of which will be used
to (i) fund the Transactions, (ii) pay the Transaction Costs and (iii) for the general corporate purposes of Company; 
 WHEREAS, it is a condition precedent to the making of any Loan on the Closing Date pursuant to the Credit Agreement that the Company shall enter into this Agreement with Holdings. 
 NOW THEREFORE, in consideration of the premises and the agreements, provisions and covenants herein contained, the parties hereto agree as
follows: 
 ARTICLE I. DEFINITIONS 
 Section 1.01 Incorporated Terms. Each capitalized term used herein and not defined herein shall have the meaning ascribed to such term in the Credit Agreement (regardless of whether such agreement shall have been terminated or
otherwise not be in full force and effect). 
 Section 1.02 Definitions. As used herein, the following terms shall have the meanings
herein specified unless the context otherwise requires. 
 “Bank” shall mean
[        ]. 
 “Capital Contribution” shall mean, with respect to any
YESCo Payment, a cash capital contribution or any other cash payment to the Company required to be made by Holdings to the Company in accordance with Section 2.01. 
 “Capital Contribution Date” shall mean, with respect to any YESCo Payment, the date upon which Holdings makes a Capital Contribution in
repayment of the amount of such YESCo Payment. 
  

					
		 		 	Parent Capital Contribution Agreement

 “Company’s Account” shall mean Account No.
[        ] in the name of the Company at the Bank. 
 “Default
Interest” shall mean, for any day, a rate per annum equal to the greater of (i) the Prime Rate in effect on such day and (ii) the Federal Funds Effective Rate in effect on such day plus three percent (3.0%). 
 “Effective Date” shall mean the date hereof. 
 “Event of Bankruptcy” shall mean any voluntary or involuntary event of bankruptcy of the type described in Sections 8.1(f) and (g) of the Credit Agreement. 
 “YESCo” shall mean Yankee Energy Services Company. 
 “YESCo Document” shall mean any of (i) the YESCo Note, (ii) the Intercreditor and Subordination Agreement, dated as of April 8, 2004, by and among Countryside Canada Power Inc.
(“Canco”) and YESCo, with respect to the indebtedness of Company to such parties (the “USEB Subordination Agreement”), (iii) the Intercreditor and Subordination Agreement, dated as of April 8, 2004, by and
among Canco and YESCo, with respect to the indebtedness of the YESCo Note Parties to such parties (the “BMC Subsidiaries Subordination Agreement”), (iv) the Guaranty, dated as of April 8, 2004, by USEB in favor of YESCo,
and (v) any ancillary documents related to any of the foregoing. 
 “YESCo Note” shall mean that certain Secured
Promissory Note, dated as of March 30, 2001, by and among the YESCo Note Parties in favor of YESCo, as amended by that certain BMC Note Amendment, dated as of April 8, 2004, by and among the YESCo Note Parties in favor of YESCo.

 “YESCo Note Parties” shall mean, collectively, BMC Energy LLC, Brookhaven Energy, LLC, Countryside Genco, L.L.C.,
Countryside Landfill Gasco, L.L.C., Morris Genco, L.L.C. and Morris Gasco, L.L.C. 
 “YESCo Payment” shall mean any payment
made to YESCo by the Company, the YESCo Note Parties or any of their respective Subsidiaries. 
 “YESCo Payment Date” shall
mean, with respect to any YESCo Payment, the date upon which such payment is made. 
 Section 1.03 Rules of Construction. 

(a) Defined terms in this Agreement shall include in the singular number the plural and in the plural number the singular. 
 (b) The words “hereof,” “herein” and “hereunder” and words of similar import when used in this Agreement shall, unless
otherwise expressly specified, refer to this Agreement as a whole and not to any particular provision of this Agreement and all references to Sections shall be references to Sections of this Agreement unless otherwise expressly specified.

  

					
		 	2	 	Parent Capital Contribution Agreement

 (c) Any agreement, contract or document defined or referred to herein shall be deemed to refer to such
agreement, contract or document, all schedules and exhibits thereto and all amendments or modifications thereto permitted pursuant to the terms hereof and the other Credit Documents. 
 ARTICLE II. CAPITAL CONTRIBUTION OBLIGATIONS 
 Section 2.01 Capital Contributions. Commencing
on the Effective Date to and including the Maturity Date, on any YESCo Payment Date, Holdings shall make Capital Contributions to the Company in an amount equal to the YESCo Payment Amount made on such YESCo Payment Date. 
 Section 2.02 Interest. Any amount which is not paid when due pursuant to Section 2.01 shall bear interest at the Default Rate plus two
percent (2%) (which amount shall be calculated quarterly in arrears on the basis of a 360-day year) until paid in full. 
 Section 2.03
Payments. Holdings agrees to make all payments required to be made by it hereunder in United States Dollars and immediately available funds directly to the Company’s Account for the benefit of the Company. 
 ARTICLE III. WAIVERS 
 Section 3.01 Obligations
Absolute. The obligation of Holdings to make any Capital Contribution in accordance with Section 2.01 is absolute, irrevocable and unconditional in all respects and shall be unaffected by any circumstance whatsoever, including,
without limitation: 
  

	 	(i)	any lack of validity or enforceability of any obligations under any Credit Document; 

  

	 	(ii)	the existence of any claim, setoff, defense or other right which Holdings may have against the Company, the YESCo Parties, Bank or any other Person; 

  

	 	(iii)	any failure by Holdings to perform its obligations under this Agreement or any release (whether by operation of law or otherwise) of the Company, the YESCo Parties or Holdings from
its obligations under this Agreement, any Credit Document or any YESCo Document; 

  

	 	(iv)	the occurrence of an Event of Bankruptcy with respect to the Company, the YESCo Parties or any other Person and the occurrence of any other proceeding as a result of such event;

  

	 	(v)	 any amendment, supplement or other modification of any YESCo Document or any Credit Document (including, without limitation, 

  

					
		 	3	 	Parent Capital Contribution Agreement

	 	 
any increase in the amounts payable in respect of any or all of the obligations under any Credit Document or any extension of the time of payment, observance
or performance, or any other amendment, supplement or modification of any of the other terms and provisions relating to the obligations under any Credit Document); 

  

	 	(vi)	the existence of any condition that adversely affects the value of any of the Brookhaven Project, Countryside Project and the Morris Project the (collectively, the YESCo-Related
Projects”) or the ability of the Company or the YESCo Parties to use any of the YESCo-Related Projects for the purposes contemplated by the applicable Project Documents; 

  

	 	(vii)	the exercise by the Company, the YESCo Parties, the Administrative Agent or any other Secured Party, or the Bank of any of their rights and remedies under any Credit Document or any
YESCo Document; 

  

	 	(viii)	any delay or failure by the Company, the YESCo Parties, the Administrative Agent or any other Secured Party, or the Bank in the exercise of their rights and remedies under this
Agreement, any Credit Document or any YESCo Document; 

  

	 	(ix)	any breach or default by any Person in the performance or observance of any of its obligations under this Agreement, any Credit Document or any YESCo Document to which it is a
party; and 

  

	 	(x)	the existence, value or condition of, or failure to perfect its Lien against, any security for the obligations under the Credit Documents or any action, or the absence of any
action, by the Administrative Agent or any other Secured Party or the Bank in respect thereof (including, without limitation, the release of any such security). 

 Section 3.02 Waiver. In addition to the waivers contained in Section 3.01: 
  

	 	(i)	Holdings waives, and agrees that it shall not at any time insist upon, plead or in any manner whatever claim or take the benefit or advantage of, any appraisal, valuation, stay,
extension, marshalling of assets or redemption laws, or exemption, whether now or at any time hereafter in force, which may delay, prevent or otherwise affect the performance by Holdings of its obligations under, or the enforcement by the Company
of, this Agreement; 

  

	 	(ii)	Holdings waives, and agrees that it shall not at any time claim or take the benefit or advantage of, Section 365(c)(2) of the Bankruptcy Code; 

  

					
		 	4	 	Parent Capital Contribution Agreement

	 	(iii)	Holdings hereby waives all notices, diligence, presentment and demand with respect to any of the events referred to in Section 3.01 or any other fact which might
increase the risk to Holdings, and waives the benefit of all laws which are or might be in conflict with the terms of this Agreement; 

  

	 	(iv)	Holdings hereby irrevocably waives, to the extent it may do so under applicable laws, any defense, set-off or counterclaim (other than a defense of payment or performance) which may
at any time be available to or be asserted by or against the Administrative Agent or any other Secured Party or the Bank; and 

  

	 	(v)	Holdings hereby irrevocably waives, to the extent it may do so under applicable laws, any defense based on the adequacy of a remedy at law which may be asserted as a bar to the
remedy of specific performance in any action brought by the Company, Administrative Agent or any other Secured Party, or the Bank against Holdings for specific performance of the terms of this Agreement. 

 Section 3.03 Reinstatement. Notwithstanding anything to the contrary provided for in Section 4.01, this Agreement shall continue
to be effective or be reinstated, as the case may be, if at any time any amount received by the Company pursuant to this Agreement is rescinded or must otherwise be restored or returned by the Company to Holdings or any trustee, custodian or similar
official for Holdings upon the occurrence of an Event of Bankruptcy with respect to Holdings, or upon the appointment of any intervenor or conservator of, or trustee, custodian or similar official for, Holdings or any part of the assets of Holdings
or otherwise, all as though such payments had not been made. 
 ARTICLE IV. MISCELLANEOUS 
 Section 4.01 Termination. Except as otherwise provided for herein, this Agreement shall terminate on the earlier of (i) the termination,
expiration or cancellation of the YESCo Note and (ii) the Maturity Date, provided that with respect to both (i) and (ii) of this Section Holdings shall have satisfied its obligation under Article II to make all of its required Capital
Contributions, both on and prior to such date. 
 Section 4.02 Notices. All notices and other communications hereunder shall be
in writing, shall be sent by first class mail, by personal delivery, by a nationally recognized courier service, or by telecopy and shall be directed to the addresses and telephone or telecopy numbers listed on Schedule I hereto or to such
other address or addressee as a party may designate by notice given pursuant hereto. 
 Section 4.03 Expenses. Holdings agrees to
pay on demand to the Company, as applicable, all reasonable costs and expenses of collection (including, without limitation, the reasonable fees and disbursements of counsel) incident to the enforcement or preservation of any right or claim under
this Agreement against Holdings. 
  

					
		 	5	 	Parent Capital Contribution Agreement

 Section 4.04 Third-Party Beneficiary. It is understood and agreed that the Administrative
Agent is intended to be a third-party beneficiary of this Agreement and has the express right to enforce each term of this Agreement. 
 Section 4.05 Separate Counterparts; Amendments; Waiver. This Agreement may be executed in separate counterparts, each of which when so executed and delivered shall be an original but all such counterparts shall constitute one
and the same instrument. Delivery of an executed counterpart of this Agreement by facsimile or other electronic means shall be equally effective as delivery of the original executed counterpart of this Agreement. Any party delivering an executed
counterpart of this Agreement by facsimile or other electronic means shall also deliver an original executed counterpart of this Agreement but the failure to deliver an original executed counterpart shall not affect the validity, enforceability or
binding effect of this Agreement. Neither this Agreement nor any of the terms hereof may be amended, supplemented, waived or otherwise modified except by an instrument in writing signed by the Administrative Agent and the party against whom any such
waiver, amendment, supplement, or other modification is to be enforced. 
 Section 4.06 No Waiver; Remedies Cumulative. No
failure or delay on the part of the Company or the Administrative Agent in exercising any right, power or privilege hereunder and no course of dealing between the Company or the Administrative Agent and Holdings or any other party hereto shall
operate as a waiver thereof; nor shall any single or partial exercise of any right, power or privilege hereunder preclude any other or further exercise thereof or the exercise of any other right, power or privilege hereunder. 
 Section 4.07 Severability of Provisions. Any provision of this Agreement which is prohibited or unenforceable in any jurisdiction shall, as
to such jurisdiction, be ineffective to the extent of such prohibition or unenforceability without invalidating the remaining provisions hereof, and any such prohibition or unenforceability in any jurisdiction shall not invalidate or render
unenforceable such provision in any other jurisdiction. 
 Section 4.08 Successors and Assigns. This Agreement shall be binding
upon each party hereto, and on their permitted successors and assigns, and shall inure to the benefit of the Company and its successors and assigns; provided, however, that Holdings shall not transfer or assign all or any portion of
its obligations under this Agreement without the prior written consent of the Company and the Administrative Agent, in their sole discretion. Holdings hereby consents to the collateral assignment of this Agreement by the Company to the
Administrative Agent for the benefit of the Secured Parties pursuant to the Pledge and Security Agreement or otherwise, and Holdings hereby agrees that (i) pursuant to the exercise of remedies the Administrative Agent or its designee or
transferee may succeed to the rights, powers, privileges, interests and remedies of the Company, whether arising under this Agreement or by statute or in law or in Capital or otherwise and (ii) the Administrative Agent as third-party
beneficiary of this Agreement shall have the right to enforce directly the provisions hereof against each of the parties hereto. 
 Section 4.09 Headings Descriptive. The headings of the several sections of this Agreement are inserted for convenience only and shall not in any way affect the meaning or construction of any provisions of this Agreement.

  

					
		 	6	 	Parent Capital Contribution Agreement

 Section 4.10 Limitation of Liability. The liabilities and obligations of Holdings hereunder
shall be obligations solely of Holdings and shall not be obligations of, nor shall enforcement of such obligations be sought against, any director, officer or shareholder of Holdings. The Administrative Agent waives any and all right to seek or
demand damages or judgment against any director, officer or shareholder of Holdings in connection with this Agreement and agrees to look solely to Holdings and Holdings’s assets for the enforcement of Holdings’s obligations hereunder.

 Section 4.11 GOVERNING LAW; SUBMISSION TO JURISDICTION; WAIVER OF JURY TRIAL. 
 (a) THIS AGREEMENT AND THE RIGHTS AND OBLIGATIONS OF THE PARTIES HEREUNDER SHALL BE GOVERNED BY, AND SHALL BE CONSTRUED AND ENFORCED IN ACCORDANCE WITH,
THE LAWS OF THE STATE OF NEW YORK. 
 (b) ANY LEGAL ACTION OR PROCEEDING WITH RESPECT TO THIS AGREEMENT AND ANY ACTION FOR ENFORCEMENT OF ANY
JUDGMENT IN RESPECT THEREOF MAY BE BROUGHT IN THE COURTS OF THE STATE OF NEW YORK OR OF THE UNITED STATES OF AMERICA FOR THE SOUTHERN DISTRICT OF NEW YORK, AND, BY EXECUTION AND DELIVERY OF THIS AGREEMENT, EACH OF THE COMPANY, THE ADMINISTRATIVE
AGENT AND HOLDINGS HEREBY ACCEPTS FOR ITSELF AND IN RESPECT OF ITS PROPERTY, GENERALLY AND UNCONDITIONALLY, THE NON-EXCLUSIVE JURISDICTION OF THE AFORESAID COURTS AND APPELLATE COURTS FROM ANY THEREOF. EACH OF THE COMPANY AND HOLDINGS HEREBY
IRREVOCABLY DESIGNATES, APPOINTS AND EMPOWERS                  AS ITS DESIGNEE, APPOINTEE AND AGENT TO RECEIVE, ACCEPT AND ACKNOWLEDGE FOR AND ON ITS BEHALF, AND
IN RESPECT OF ITS PROPERTY, SERVICE OF ANY AND ALL LEGAL PROCESS, SUMMONS, NOTICES AND DOCUMENTS WHICH MAY BE SERVED IN ANY ACTION OR PROCEEDING. IF FOR ANY REASON SUCH DESIGNEE, APPOINTEE AND AGENT SHALL CEASE TO BE AVAILABLE TO ACT AS SUCH, THE
COMPANY OR HOLDINGS, AS APPLICABLE, AGREES TO DESIGNATE A NEW DESIGNEE, APPOINTEE AND AGENT IN NEW YORK CITY ON THE TERMS AND FOR THE PURPOSES OF THIS PROVISION SATISFACTORY TO THE ADMININSTRATIVE AGENT. THE COMPANY, THE ADMINISTRATIVE AGENT AND
HOLDINGS IRREVOCABLY CONSENT TO THE SERVICE OF PROCESS OUT OF ANY OF THE AFOREMENTIONED COURTS IN ANY SUCH ACTION OR PROCEEDING BY THE MAILING OF COPIES THEREOF BY REGISTERED OR CERTIFIED MAIL, POSTAGE PREPAID, TO THE COMPANY, THE ADMINISTRATIVE
AGENT AND HOLDINGS AT ITS ADDRESS REFERRED TO IN SECTION 4.02. EACH OF THE COMPANY, THE ADMINISTRATIVE AGENT AND HOLDINGS HEREBY IRREVOCABLY WAIVES ANY OBJECTION WHICH IT MAY NOW OR HEREAFTER HAVE TO THE LAYING OF VENUE OF ANY OF THE
AFORESAID ACTIONS OR PROCEEDINGS ARISING OUT OF OR IN CONNECTION WITH THIS AGREEMENT BROUGHT IN THE COURTS REFERRED TO ABOVE AND HEREBY FURTHER IRREVOCABLY WAIVES AND AGREES NOT TO PLEAD OR CLAIM IN ANY SUCH COURT THAT ANY SUCH ACTION OR PROCEEDING

  

					
		 	7	 	Parent Capital Contribution Agreement

 
BROUGHT IN ANY SUCH COURT HAS BEEN BROUGHT IN AN INCONVENIENT FORUM. NOTHING HEREIN SHALL AFFECT THE RIGHT OF ANY PARTY HERETO TO SERVE PROCESS IN ANY OTHER
MANNER PERMITTED BY LAW OR TO COMMENCE LEGAL PROCEEDINGS OR OTHERWISE PROCEED IN ANY OTHER JURISDICTION. 
 (c) EACH OF THE COMPANY, THE
ADMINISTRATIVE AGENT AND HOLDINGS HEREBY IRREVOCABLY WAIVES ALL RIGHT OF TRIAL BY JURY IN ANY ACTION, PROCEEDING OR COUNTERCLAIM ARISING OUT OF OR IN CONNECTION WITH THIS AGREEMENT OR ANY MATTER ARISING HEREUNDER. 
 [Remainder of page intentionally left blank; signature pages follow] 
  

					
		 	8	 	Parent Capital Contribution Agreement

 IN WITNESS WHEREOF, the parties hereto have caused their duly authorized officers to execute and deliver
this Agreement as of the date first written above. 
  

			
	U.S. ENERGY BIOGAS CORP.
		
	By:	 	  

	Name:	 	
	Title:	 	
	
	U.S. ENERGY SYSTEMS, INC.
		
	By:	 	  

	Name:	 	
	Title:	 	
	
	 SILVER POINT FINANCE, LLC,
 as
Administrative Agent

		
	By:	 	  

	Name:	 	
	Title:	 	

  

					
		 	9	 	Parent Capital Contribution Agreement

 Schedule I to  
 Capital Contribution Agreement 
 Notice Addresses 
 Any notice to be mailed, delivered or faxed to any of the following parties pursuant to the terms of the foregoing agreement shall be sent to such party
at its address or facsimile number as set forth below: 
  

			
	 U.S. ENERGY BIOGAS CORP.,

	 as the Company

	
	 40 Tower Lane

	 Avon, CT 06001

	 Attn:
	 	  

	 Tel:
	 	  

	 Fax:
	 	  

  

			
	 U.S. ENERGY SYSTEMS, INC.,

	 as Holdings

	
	

	  

	 Attn:
	 	  

	 Tel:
	 	  

	 Fax:
	 	  

 SILVER POINT FINANCE, LLC, 
 as Administrative Agent 
 Silver Point Finance, LLC (Borrowings, Paydowns, Interest, Fees, Rate Settings) 
 2 Greenwich Plaza 
 Greenwich, CT 06830 

	Attn:	Tim Skoufis 

	Phone:	(203) 542-4445 

	Fax:	(203) 286-2139 

	Email:	bladmin@silverpointcapital.com 

  

					
		 	10	 	Parent Capital Contribution Agreement

 with a copy to: 
 Silver Point Finance, LLC (Financials, Credit Agreements, Amendments, Waivers, Compliance) 
 2 Greenwich Plaza 
 Greenwich, CT 06830 

	Attn:	Dinorah Martinez 

	Phone:	(203) 542-4409 

	Fax:	(203) 542-4550 

	Email:	creditadmin@silverpointcapital.com 

  

					
		 	11	 	Parent Capital Contribution Agreement

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