Document:

EX-10.9

 Exhibit 10.9 

SunEdison, Inc. 
 13736
Riverport Drive, Suite 180 
 Maryland Heights, Missouri 63043 

July 23, 2014 
 TerraForm Power, LLC 

12500 Baltimore Avenue 
 Beltsville, Maryland 20705 

Attention: General Counsel 
  

	 	Re:	Agreement Regarding the Priced Call Right Assets 

 Dear Sirs and Madams: 

Reference is made to that certain Project Support Agreement, dated as of July 23, 2014 (the “Project Support
Agreement”), by and between SunEdison, Inc., a Delaware corporation (“SunEdison”), and TerraForm Power, LLC, a Delaware limited liability company (“Terra”). Capitalized terms used in this letter agreement
but not otherwise defined herein shall have the meanings ascribed to such terms in the Project Support Agreement. 
 The Parties have
mutually agreed on the pricing terms and a financial model for the Call Right Assets set forth in the table in Annex A under the heading “Priced Call Right Assets.” The aggregate Call Right Price for the Priced Call Right Assets
shall be US $732.0 million; provided, that such amount may be adjusted by mutual agreement of the Parties if there is a change to any of the variables in the agreed upon financial model (an “Adjustment”). The Parties agree that if
Terra elects to purchase less than all of the Priced Call Right Assets (a “Partial Election”), the Call Right Price for individual projects shall be determined based on the agreed upon financial model, as adjusted by mutual
agreement of the Parties to reflect any changes in applicable variables. If the Parties cannot agree on the terms of any Adjustment or the pricing terms in the case of a Partial Election, the Parties shall engage a Third Party Advisor and follow the
procedures set forth in Section 2.7 of the Project Support Agreement to resolve such dispute. 
 SunEdison acknowledges its
obligations under (i) Section 2.5 of the Project Support Agreement, that if SunEdison receives a Third Party Offer to purchase a Call Right Asset, SunEdison shall provide notice to Terra of the terms of such Third Party Offer in
reasonable detail, and Terra shall have the right, but not the obligation, to purchase such Call Right Asset on substantially similar terms (but at a price no less than specified in the Third Party Offer) by notifying SunEdison within ten
(10) Business Days of receiving the notice of such Third Party Offer, and (ii) Section 2.6 of the Project Support Agreement, that prior to satisfaction of the CAFD Commitment SunEdison may not market, negotiate, accept an offer
or sell a Priced Call Right Asset to any Third Party unless and until Terra delivers a notice that it is forfeiting its Call Right with respect to such Priced Call Right Asset. 

Except as explicitly set forth herein, all of the terms and conditions of the Project Support Agreement will remain in full force and effect
and will not be, or deemed to be, waived, modified, superseded or otherwise affected by this letter agreement. 
 [Signature Page follows]

 
			
	SUNEDISON, INC.
		
	By:	 	 /s/ Brian Wuebbels

	Name:	 	Brian Wuebbels
	Title:	 	Executive Vice President and Chief Financial Officer

  

			
	Acknowledged and Agreed on July 23, 2014
	
	TERRAFORM POWER, LLC
		
	By:	 	 /s/ Sebastian Deschler

	Name:	 	Sebastian Deschler
	Title:	 	General Counsel

 [Signature Page to Agreement Regarding the Priced Call Right Assets] 

 Annex A 

					
	 Project Name
	  	 Project Description
	  	 Projected Commercial

Operations Date

	Ontario 2015 projects	  	13.2 MW nameplate capacity; 22 sites; located in Canada	  	Q1 2015 - Q4 2015
	UK projects #1-6	  	139.0 MW nameplate capacity; 6 sites; located in the United Kingdom	  	Q1 2015 - Q2 2015
	Chile project #1	  	69.0 MW nameplate capacity; 1 site; located in Chile	  	Q1 2015
	Ontario 2016 projects	  	10.8 MW nameplate capacity; 18 sites; located in Canada	  	Q1 2016 - Q4 2016
	Chile project #2	  	94.0 MW nameplate capacity; 1 site; located in Chile	  	Q1 2016EX-10.10

 Exhibit 10.10 

INTEREST PAYMENT AGREEMENT 

THIS INTEREST PAYMENT AGREEMENT (this “Agreement”) is made as of the July, 23, 2014 (the “Effective
Date”), by and among TerraForm Power, LLC (“Terra LLC”), TerraForm Power Operating, LLC, a Delaware limited liability company (“Terra Operating”), SunEdison, Inc., a Delaware corporation
(“SunEdison”), and SunEdison Holdings Corporation, a Delaware corporation (“SunEdison Holdings”). 

RECITALS 
 A. Terra
Operating is the borrower under that certain Credit and Guaranty Agreement, to be dated on or about the date hereof (as amended, restated, supplemented or otherwise modified from time to time, the “Credit Agreement”), by and among
Terra LLC, Terra Operating, as borrower, the guarantors named therein, Goldman Sachs Bank USA, as administrative agent (the “Agent”), and the lenders named therein. 

B. SunEdison Holdings, which is a wholly-owned subsidiary of SunEdison, owns 100% of the outstanding Class B units (the “Class
B Units”) of Terra LLC, which in turn owns 100% of the membership interests of Terra Operating. 
 C. SunEdison
desires to provide support with respect to the interest payment obligations of Terra Operating with respect to the term loans made under the Credit Agreement (the “Term Loans”), on the terms and subject to the conditions of this
Agreement, and Terra Operating wishes to accept such support. 
 NOW THEREFORE, in consideration of the mutual covenants and
agreements contained in this Agreement and other good and valuable consideration (the receipt and sufficiency of which are hereby acknowledged), the parties hereto agree as follows: 

AGREEMENT 
 1.
Definitions. 
 (a) “Affiliate” means, with respect to a person, any other person that, directly or indirectly,
through one or more intermediaries, controls or is controlled by such person, or is under common control of a third person. 
 (b)
“Business Day” means every day except a Saturday or Sunday, or a legal holiday in the City of New York on which banking institutions are authorized or required by law, regulation or executive order to close. 

(c) “Change in Control” means, with respect to Terra Operating, Terra LLC or Terra, the occurrence of any of the following:
(i) a “Person” (as such term is used in Sections 13(d) and 14(d)(2) of the Securities Exchange Act of 1934, as amended, but specifically excluding SunEdison and its Affiliates) becoming a beneficial owner, directly or indirectly, of
equity representing fifty percent (50%) or more of the total voting power of Terra Operating’s, Terra LLC’s or Terra’s then outstanding equity capital; (ii) Terra Operating, Terra LLC or Terra merging into, consolidating
with or effecting an amalgamation with another Person, or merging 

 
another Person into Terra Operating, Terra LLC or Terra, on a basis whereby less than fifty percent (50%) of the total voting power of the surviving Person immediately after such merger,
consolidation or amalgamation is represented by equity held directly or indirectly by former equity holders of (and in respect of their former equity holdings in) Terra Operating, Terra LLC or Terra, as applicable, immediately prior to such merger,
consolidation or amalgamation; and (iii) Terra Operating, Terra LLC or Terra directly or indirectly selling, transferring or exchanging all, or substantially all, of its assets to another Person unless greater than fifty percent (50%) of
the total voting power of the transferee receiving such assets is directly or indirectly owned by the equity holders of Terra Operating, Terra LLC or Terra, as applicable, in respect of their former equity holdings in Terra Operating, Terra LLC or
Terra, as applicable, immediately prior to transfer. 
 (d) “End Date” means July 23, 2017 

(e) “Governing Instruments” means (i) the certificate of incorporation and bylaws in the case of a corporation,
(ii) the articles of formation and operating agreement in the case of a limited liability company (iii) the partnership agreement in the case of a partnership, and (iv) any other similar governing document under which an entity was
organized, formed or created and/or operates. 
 (f) “Independent Committee” means a committee of the board of directors
(or equivalent body) of Terra, established in accordance with Terra’s Governing Instruments, made up of directors that are “independent” of SunEdison and its Affiliates. For purposes of this definition, “independent” means a
person who satisfies the independence requirements of the rules and regulations of the applicable stock exchange, the U.S. Securities and Exchange Commission and Terra’s Governing Instruments. The Independent Committee shall initially be the
Corporate Governance and Conflicts Committee. 
 (g) “Interest Payment Amount” means, with respect to each Interest Payment
Date, the amount of scheduled interest payable on the Term Loans by Terra Operating on such Interest Payment Date under the Credit Agreement (excluding default interest and any amounts payable in connection with an acceleration of the Term Loans
under the Credit Agreement) up to an aggregate amount of $48,000,000 (plus interest on any Overdue Amount in accordance with Section 3 below) (the “Maximum Payment Amount”). 

(h) “Interest Payment Date” means “Interest Payment Date” (as such term is defined in the Credit Agreement). 

(i) “Terra” means TerraForm Power, Inc., a Delaware corporation and the direct or indirect parent company of Terra LLC and
Terra Operating. 
 2. Support Payments. 

(a) SunEdison shall, or shall cause one of its Affiliates (other than Terra, Terra LLC and their subsidiaries) to: 

(i) at least three (3) Business Days prior to each Interest Payment Date, deposit into an account of Terra Operating an
amount equal to the Interest 

  
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Payment Amount, and Terra Operating shall use such funds solely to pay the Interest Payment Amount in accordance with the terms of the Credit Agreement on or prior to the Interest Payment Date;
or 
 (ii) on or prior to each Interest Payment Date, pay (on behalf of Terra Operating) the Interest Payment Amount in
accordance with the terms of the Credit Agreement. 
 (b) Any payments made by SunEdison or any of its Affiliates described in
Section 2(a)(i) or (ii) shall be treated as a contribution by SunEdison (or its applicable Affiliate) to the capital of SunEdison Holdings, followed by a contribution by SunEdison Holdings to the capital of Terra LLC and by Terra LLC to
Terra Operating. However, none of SunEdison, SunEdison Holdings or their respective Affiliates shall have any rights, at any time, to reimbursement of any payments made by SunEdison or its Affiliates pursuant to Section 2(a). 

3. Failure to Pay When Due. Any amount payable by SunEdison under Section 2 which is not remitted when so due (an
“Overdue Amount”) will remain due (whether on demand or otherwise) and interest will accrue on such Overdue Amount at a rate per annum equal to the interest rate then applicable under the Credit Agreement (including default
interest). In addition, SunEdison hereby irrevocably authorizes Terra LLC to pay to Terra Operating any Overdue Amount from any distributions that may be due to SunEdison with respect to its Class B Units, and to set off any such payment against any
such distributions then due. The foregoing setoff rights of Terra LLC shall be in addition to any other right of Terra LLC provided by law, and shall be effective and enforceable notwithstanding any other provision of this Agreement. 

4. Repayment of Term Loan. Terra Operating shall use commercially reasonable efforts to repay in full the Term Loans under the Credit
Agreement on or prior to the End Date. 
 5. Representations and Warranties. Each of Terra Operating, Terra LLC, SunEdison and
SunEdison Holdings hereby represents and warrants to the other that: 
 (a) it is validly organized and existing under the laws of the State
of Delaware; 
 (b) it has the power, capacity and authority to enter into this Agreement and to perform its duties and obligations
hereunder; 
 (c) it has taken all necessary action to authorize the execution, delivery and performance of this Agreement; 

(d) the execution and delivery of this Agreement by it and the performance by it of its duties obligations hereunder do not and will not
contravene, breach or result in any default under its Governing Instruments, or under any mortgage, lease, agreement or other legally binding instrument, permit or applicable law to which it is a party or by which any of its properties or assets may
be bound, except for any such contravention, breach or default which would not have a material adverse effect on its business, assets, financial condition or results of operations taken as a whole; 

  
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 (e) no authorization, consent or approval, or filing with or notice to any governmental body or
authority or other person is required in connection with the execution, delivery or performance by it of this Agreement; and 
 (f) this
Agreement constitutes its valid and legally binding obligation, enforceable against it in accordance with its terms, subject to: (i) applicable bankruptcy, insolvency, moratorium, fraudulent conveyance, reorganization and other laws of general
application limiting the enforcement of creditors’ rights and remedies generally; and (ii) general principles of equity, including standards of materiality, good faith, fair dealing and reasonableness, equitable defenses and limits as to
the availability of equitable remedies, whether such principles are considered in a proceeding at law or in equity. 
 6. Term;
Termination. 
 (a) Term. This Agreement shall become effective as of the Effective Date and shall terminate on the earlier to
occur of (i) the payment by SunEdison of the Maximum Payment Amount or (ii) the End Date, provided that if any amounts owing from SunEdison hereunder remain unpaid as of the End Date, then the date that all amounts owing from SunEdison
hereunder shall have been paid in full, unless terminated earlier as set forth in this Agreement. 
 (b) Termination. Notwithstanding
Section 6(a), this Agreement may be terminated prior to the End Date as follows: 
 (i) Terra Operating and
SunEdison may terminate this Agreement by mutual written agreement. 
 (ii) This Agreement shall automatically terminate upon
(i) the repayment in full of all outstanding Term Loans of Terra Operating and its subsidiaries under the Credit Agreement or (ii) a Change in Control of Terra Operating, Terra LLC or Terra. 

(iii) Terra Operating, Terra LLC or SunEdison may terminate this Agreement immediately if Terra Operating, Terra LLC or
SunEdison makes a general assignment for the benefit of its creditors, institutes proceedings to be adjudicated voluntarily bankrupt, consents to the filing of a petition of bankruptcy against it, is adjudicated by a court of competent jurisdiction
as being bankrupt or insolvent, seeks reorganization under any bankruptcy law or consents to the filing of a petition seeking such reorganization or has a decree entered against it by a court of competent jurisdiction appointing a receiver
liquidator, trustee or assignee in bankruptcy or in insolvency. 
 (c) This Agreement may only be terminated pursuant to
Section 6(b)(i) or 6(b)(iii) above by Terra Operating or Terra LLC with the prior approval of a majority of the members of the Independent Committee. 

7. Amendment; Waiver. The parties may amend this Agreement only by a written agreement signed by the parties and that identifies itself
as an amendment to this Agreement, provided that, except as expressly provided in this Agreement, no amendment or waiver of this 

  
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Agreement will be binding unless the prior approval of a majority of the members of the Independent Committee is obtained and the amendment or waiver is executed in writing by the party to be
bound thereby. No waiver of any provision of this Agreement will constitute a waiver of any other provision nor will any waiver of any provision of this Agreement constitute a continuing waiver unless otherwise expressly provided. A party’s
failure or delay in exercising any right under this Agreement will not operate as a waiver of that right. A single or partial exercise of any right will not preclude a party from any other or further exercise of that right or the exercise of any
other right. 
 8. Notices. Any notice, demand or other communication to be given under or by reason of the provisions of this
Agreement shall be in writing and shall be deemed to have been given (i) when delivered personally to the recipient, (ii) when sent by facsimile if sent during normal business hours of the recipient; but if not, then on the next Business
Day, (iii) one Business Day after it is sent to the recipient by reputable overnight courier service (charges prepaid) or (iv) three Business Days after it is mailed to the recipient by first class mail, return receipt requested. Such
notices, demands and other communications shall be sent to the addresses specified below, or at such address or to the attention of such other person as the recipient party has specified by prior written notice to the sending party. Any party may
change such party’s address for receipt of notice by giving prior written notice of the change to the sending party as provided herein. Notices and other communications will be addressed as follows: 

If to Terra LLC or Terra Operating: 

TerraForm Power, Inc. 
 12500
Baltimore Avenue 
 Beltsville, Maryland 20705 

Attn: General Counsel 

Facsimile: (240) 264-8100 

If to SunEdison or SunEdison Holdings: 

SunEdison, Inc. 
 13736
Riverport Drive, Suite 180 
 Maryland Heights, Missouri 63043 

Attn: General Counsel 

Facsimile: (866) 773-0791 

9. Assignment. Neither party may assign or otherwise transfer this Agreement without the prior written consent of the other party.
Notwithstanding the foregoing, each party shall have the right to assign or otherwise transfer this Agreement, without the prior written consent of the other party, to any of its Affiliates so long as such person remains an Affiliate of such party;
provided that, (i) such transferring party shall provide written notice to the other party of such assignment, and (ii) such assignment shall not relieve the transferring party of its obligations hereunder. 

  
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 10. Successors; No Third Party Beneficiaries. This Agreement will be binding upon the
parties hereto and their respective successors and permitted assigns. The provisions of this Agreement are enforceable solely by the parties to the Agreement and their respective successors and permitted assigns and no other person shall have the
right, separate and apart from the parties hereto, to enforce any provisions of this Agreement or to compel any party to comply with the terms of this Agreement. 

11. Consent to Jurisdiction and Service of Process. EACH OF THE PARTIES IRREVOCABLY SUBMITS TO THE
NON-EXCLUSIVE JURISDICTION OF THE FEDERAL COURTS OF THE UNITED STATES OF AMERICA LOCATED IN THE CITY AND COUNTY OF NEW YORK, BOROUGH OF MANHATTAN, FOR THE PURPOSES OF ANY SUIT, ACTION OR OTHER PROCEEDING
ARISING OUT OF THIS AGREEMENT, ANY RELATED AGREEMENT OR ANY TRANSACTION CONTEMPLATED HEREBY OR THEREBY. EACH OF THE PARTIES HERETO FURTHER AGREES THAT SERVICE OF ANY PROCESS, SUMMONS, NOTICE OR DOCUMENT BY U.S. REGISTERED MAIL TO SUCH PARTY’S
RESPECTIVE ADDRESS SET FORTH ABOVE SHALL BE EFFECTIVE SERVICE OF PROCESS FOR ANY ACTION, SUIT OR PROCEEDING WITH RESPECT TO ANY MATTERS TO WHICH IT HAS SUBMITTED TO JURISDICTION IN THIS PARAGRAPH. EACH OF THE PARTIES HERETO IRREVOCABLY AND
UNCONDITIONALLY WAIVES ANY OBJECTION TO THE LAYING OF VENUE OF ANY ACTION, SUIT OR PROCEEDING ARISING OUT OF THIS AGREEMENT, ANY RELATED DOCUMENT OR THE TRANSACTIONS CONTEMPLATED HEREBY AND THEREBY IN THE UNITED STATES DISTRICT COURT FOR THE
SOUTHERN DISTRICT OF NEW YORK, AND HEREBY AND THEREBY FURTHER IRREVOCABLY AND UNCONDITIONALLY WAIVES AND AGREES NOT TO PLEAD OR CLAIM IN ANY SUCH COURT THAT ANY SUCH ACTION, SUIT OR PROCEEDING BROUGHT IN ANY SUCH COURT HAS BEEN BROUGHT IN AN
INCONVENIENT FORUM. 
 12. Mutual Waiver of Jury Trial. AS A SPECIFICALLY BARGAINED FOR INDUCEMENT FOR EACH OF THE PARTIES HERETO TO
ENTER INTO THIS AGREEMENT (AFTER HAVING THE OPPORTUNITY TO CONSULT WITH COUNSEL), EACH PARTY HERETO EXPRESSLY WAIVES THE RIGHT TO TRIAL BY JURY IN ANY LAWSUIT OR PROCEEDING RELATING TO OR ARISING IN ANY WAY FROM THIS AGREEMENT OR THE MATTERS
CONTEMPLATED HEREBY. 
 13. Governing Law. The internal law of the State of New York will govern and be used to construe this
Agreement without giving effect to applicable principles of conflicts of law to the extent that the application of the laws of another jurisdiction would be required thereby. 

14. Invalidity of Provisions. Each of the provisions contained in this Agreement is distinct and severable and a declaration of
invalidity or unenforceability of any such provision or part thereof by a court of competent jurisdiction will not affect the validity or enforceability of any other provision hereof. To the extent permitted by applicable law, the parties waive any
provision of law which renders any provision of this Agreement invalid or unenforceable in any respect. The parties will engage in good faith negotiations to replace any provision which is declared invalid or unenforceable with a valid and
enforceable provision, the economic effect of which comes as close as possible to that of the invalid or unenforceable provision which it replaces. 

  
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 15. Entire Agreement. This Agreement constitutes the entire agreement between the parties
pertaining to the subject matter set forth herein. There are no warranties, conditions, or representations (including any that may be implied by statute) and there are no agreements in connection with such subject matter except as specifically set
forth or referred to in this Agreement. No reliance is placed on any warranty, representation, opinion, advice or assertion of fact made either prior to, contemporaneous with, or after entering into this Agreement, by any party to this Agreement or
its directors, officers, employees or agents, to any other party to this Agreement or its directors, officers, employees or agents, except to the extent that the same has been reduced to writing and included as a term of this Agreement, and none of
the parties to this Agreement has been induced to enter into this Agreement by reason of any such warranty, representation, opinion, advice or assertion of fact. Accordingly, there will be no liability, either in tort or in contract, assessed in
relation to any such warranty, representation, opinion, advice or assertion of fact, except to the extent contemplated above. 
 16.
Further Assurances. Each of the parties hereto will promptly do, make, execute or deliver, or cause to be done, made, executed or delivered, all such further acts, documents and things as the other party hereto may reasonably require from
time to time for the purpose of giving effect to this Agreement and will use reasonable efforts and take all such steps as may be reasonably within its power to implement to their full extent the provisions of this Agreement. 

17. Counterparts. This Agreement may be signed in counterparts and each of such counterparts will constitute an original document and
such counterparts, taken together, will constitute one and the same instrument. 

  
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 IN WITNESS WHEREOF, the parties have executed this Agreement as of the date first above written.

  

			
	SUNEDISON, INC.
		
	By:	 	 /s/ Brian Wuebbels

	Name:	 	Brian Wuebbels
	Title:	 	Executive Vice President and Chief Financial Officer
	
	SUNEDISON HOLDINGS CORPORATION
		
	By:	 	 /s/ Martin Truong

	Name:	 	Martin Truong
	Title:	 	Secretary
	
	TERRAFORM POWER, LLC
		
	By:	 	 /s/ Sebastian Deschler

	Name:	 	Sebastian Deschler
	Title:	 	General Counsel
	
	TERRAFORM POWER OPERATING, LLC
		
	BY:	 	 TERRAFORM POWER, LLC,
 as sole
member

		
	By:	 	 /s/ Sebastian Deschler

	Name:	 	Sebastian Deschler
	Title:	 	General Counsel

 Signature Page - Interest Payment Agreement

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