Document:

Exhibit 4.2

 

STOCKHOLDERS AGREEMENT

 

STOCKHOLDERS
AGREEMENT (this “Agreement”), dated as of October 14, 2021, by and among Enviva Partners, LP, a Delaware
limited partnership (with its successors and permitted assigns, including the resulting corporation Enviva Inc., from and after the Conversion
(as defined below) as the context requires, herein after called “EVA”) and each of the stockholders listed on the signature
pages hereto. This Agreement shall become effective (the “Effective Date”) upon the closing of the Conversion
(as defined below).

 

WHEREAS, in order to set forth
certain understandings between EVA and the Riverstone Stockholders (as defined below), including with respect to certain governance matters,
the Riverstone Stockholders and EVA wish to enter into this Agreement in accordance with the terms set forth herein.

 

NOW, THEREFORE, in consideration
of the promises and of the mutual consents and obligations hereinafter set forth, the parties hereto hereby agree as follows:

 

Section 1.          Definitions;
Interpretation.

 

(a)            Definitions.
As used herein, the following terms shall have the following respective meanings:

 

“Affiliate”
means as to any Person, any other Person or entity who directly, or indirectly through one or more intermediaries, controls, is controlled
by or is under common control with such Person; provided that neither of the Riverstone Stockholders shall be deemed to be Affiliates
of EVA or any of its Subsidiaries and neither EVA nor any of its Subsidiaries shall be deemed to be Affiliates of the Riverstone Stockholders.
As used in this definition, the term “control,” including the correlative terms “controlling,” “controlled
by” and “under common control with,” means possession, directly or indirectly, of the power to direct or cause the direction
of management or policies (whether through ownership of securities or any partnership or other ownership interest, by contract or otherwise)
of a Person.

 

“Agreement”
has the meaning set forth in the Preamble.

 

“Beneficially Own”
has the meaning set forth in Rule 13d-3 promulgated under the Securities Exchange Act of 1934, as amended.

 

“Board”
means, prior to the Conversion, the board of directors of Enviva Partners GP, LLC, and from and after the Conversion, the board of directors
of EVA.

 

“Business
Day” means any day other than Saturday, Sunday, or holiday on which banks are generally open for business in New York
City; provided, however, banks shall be deemed to be generally open for business in the event of a “shelter in place”
or similar closure of physical branch locations at the direction of any governmental entity if such banks’ electronic funds transfer
system (including for wire transfers) are open for use by customers on such day.

 

     

     

    

 

“Change of Control”
means (i) the sale or disposition of all or substantially all of the assets of EVA and its Subsidiaries on a consolidated basis to
any Person or group (within the meaning of Section 13(d)(3) of the Securities Exchange Act of 1934, as amended), other than
to the Riverstone Stockholders or their respective Affiliates; (ii) any transaction or series of related transactions (including,
but not limited to, a merger or consolidation) that results in any Person or group (within the meaning of Section 13(d)(3) of
the Securities Exchange Act of 1934, as amended), other than the Riverstone Stockholders and their respective Affiliates, acquiring Beneficial
Ownership of shares of Common Stock or other equity interest of EVA that represent more than 50% of the total voting power of EVA (or
any resulting company after such transaction) with respect to the election of directors to the Board; or (iii) a “Change of
Control” or “Change in Control” as defined in any of EVA’s or its Subsidiaries’ existing credit agreements.

 

“Common Stock”
means (i) the outstanding shares of common stock, par value $0.001 per share, of EVA and any securities into which such common stock
may be changed or for which such common stock may be exchanged or converted, (ii) any additional shares of common stock that may
be issued in the future, (iii) any shares of capital stock of EVA into which such shares may be converted or for which such shares
may be exchanged and shall also include (iv) any common stock of EVA of any class hereafter authorized.

 

“Conversion”
means the conversion of Enviva Partners, LP from a limited partnership into a corporation under the laws of the State of Delaware pursuant
to the terms and conditions set forth in a plan of conversion or pursuant to such other alternative transaction or series of transactions
adopted by EVA pursuant to which EVA or its Affiliate or other entity that succeeds to substantially all of the assets of EVA becomes
a Delaware corporation (by way of reorganization, conversion, merger, or otherwise, or any combination of the foregoing), and in any such
case whose Common Stock is issued in exchange for common units representing limited partner interests in Enviva Partners, LP.

 

“EVA” has
the meaning set forth in the Preamble.

 

“Person”
means any natural person, corporation, partnership, limited liability company, firm, association, trust, government, governmental agency
or other entity, whether acting in an individual, fiduciary or other capacity.

 

“Riverstone Stockholders”
means Riverstone Echo Continuation Holdings, L.P., Riverstone Echo Rollover Holdings, L.P. and each of their Affiliates that owns any
shares of Common Stock in EVA.

 

“Subsidiary”
means, with respect to any Person, any corporation, partnership, limited liability company, joint venture, or other legal entity of any
kind of which such Person (either alone or through or together with one or more of its other Subsidiaries), (i) owns, directly or
indirectly, more than 50% of the capital stock, general partner interests, limited partner interests, managing member interests or other
equity interests the holders of which are (x) generally entitled to vote for the election of the board of directors or other governing
body of such legal entity or (y) generally entitled to share in the profits or capital of such legal entity or (ii) serves as
a general partner or managing member.

 

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(b)            Rules of
Construction. For all purposes of this Agreement, unless otherwise expressly provided:

 

(1)           the
headings and captions of this Agreement are for convenience of reference only and shall not define, limit or otherwise affect any of the
terms hereof;

 

(2)           the
term “including” is not limiting and means “including without limitation”; and

 

(3)           whenever
the context requires, the gender of all words used herein shall include the masculine, feminine and neuter, and the number of all words
shall include the singular and plural.

 

Section 2.          Composition
of the Board of Directors.

 

(a)            Initial
Composition of the Board. The Board will be initially comprised of the 13 directors set forth on Annex A.

 

(b)            Election
of Directors. Following the Conversion, if EVA holds an annual meeting of its stockholders in 2022 (the “2022 Annual Meeting”),
EVA and the Riverstone Stockholders shall take all necessary and appropriate actions within their power to cause the slate of directors
listed on Annex A to be the slate of nominees recommended by the Board to EVA’s stockholders for election as directors at
such meeting, and EVA and the Riverstone Stockholders shall use all reasonable best efforts to cause the election of each such nominee,
including (i) voting or providing a written consent or proxy with respect to Common Stock (if practicable), and soliciting proxies,
in favor of the election of such nominees, (ii) causing the adoption of stockholders’ resolutions and amendments to the organizational
documents of EVA, (iii) executing agreements and instruments, and (iv) making, or causing to be made, with governmental, administrative
or regulatory authorities, all filings, registrations or similar actions that are required to achieve such result.

 

Section 3.          Certain
Actions.

 

(a)            Subject
to the provisions of Section 3(b), without the approval of the Riverstone Stockholders, EVA shall not, and (to the extent
applicable) shall not permit any Subsidiary of EVA to:

 

(1)          amend
EVA’s certificate of incorporation or bylaws;

 

(2)          undertake
any transaction involving a merger of EVA or that would otherwise constitute a Change of Control;

 

(3)          commence
any voluntary dissolution, reorganization, recapitalization or liquidation of EVA;

 

(4)          make
a voluntary filing of a petition for bankruptcy or receivership by EVA, or fail to oppose any other person’s petition filed against
EVA in any such proceeding;

 

(5)          adopt
any “poison pill” or shareholder rights plan;

 

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(6)      make
any acquisition or disposition of assets or equity interests, in any transaction or series or related transactions, for aggregate consideration
in excess of (A) 25% of the fair market value of EVA’s total assets or (B) 25% of the market capitalization of EVA, each
as determined at the time of the approval of the agreement to enter into any such transaction or series of related transactions; or

 

(7)      enter
into any agreement to undertake or effect any of the foregoing actions.

 

(b)            The
approval rights set forth in Section 3(a) above shall terminate at such time as the Riverstone Stockholders no longer
collectively Beneficially Own at least 30% of the outstanding Common Stock.

 

Section 4.     Duration
of Agreement. This Agreement shall terminate automatically upon the later of: (a) such time as the Riverstone Stockholders no
longer collectively Beneficially Own at least 30% of the outstanding Common Stock and (b) the earlier of (1) the 2022 Annual
Meeting, if held, and (2) December 31, 2022.

 

Section 5.          Severability.
The provisions of this Agreement will be deemed severable, and the invalidity or unenforceability of any provision will not affect the
validity or enforceability of the other provisions hereof. If any provision of this Agreement, or the application thereof to any Person
or any circumstance, is found to be invalid or unenforceable in any jurisdiction, (1) a suitable and equitable provision will be
substituted therefor in order to carry out, so far as may be valid and enforceable, the intent and purpose of such invalid or unenforceable
provision and (2)the remainder of this Agreement and the application of such provision to other Persons or circumstances will not be
affected by such invalidity or unenforceability, nor will such invalidity or unenforceability affect the validity or enforceability of
such provision, or the application thereof, in any other jurisdiction.

 

Section 6.          Governing
Law; Jurisdiction.

 

(a)            This
Agreement shall be governed by, and construed in accordance with, the laws of the State of Delaware, without giving effect to its choice
or conflict of law provisions or rules.

 

(b)            Any
suit, action or proceeding seeking to enforce any provision of, or based on any matter arising out of or in connection with, this Agreement
may be brought against any of the parties in any federal court located in the State of Delaware or any Delaware state court, including
the Delaware Chancery Courts located in Wilmington, Delaware, and each of the parties hereby consents to the exclusive jurisdiction of
such court (and of the appropriate appellate courts) in any such suit, action or proceeding and waives any objection to venue laid therein.
Process in any such suit, action or proceeding may be served on any party anywhere in the world, whether within or without the jurisdiction
of any such court. Without limiting the foregoing, each of the parties agrees that service of process upon such party at the address referred
to in Section 10, together with written notice of such service to such party, shall be deemed effective service of process
upon such party.

 

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Section 7.          Jury
Trial.

 

BECAUSE DISPUTES ARISING IN
CONNECTION WITH COMPLEX FINANCIAL 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/OR ARBITRATION,
THE PARTIES HERETO WAIVE ALL RIGHT TO TRIAL BY JURY IN ANY ACTION, SUIT OR PROCEEDING BROUGHT TO ENFORCE OR DEFEND ANY RIGHT OR REMEDIES
UNDER THIS AGREEMENT OR ANY DOCUMENTS ENTERED INTO AMONG THE PARTIES HERETO IN CONNECTION WITH THIS AGREEMENT AND THE TRANSACTIONS CONTEMPLATED
HEREIN.

 

Section 8.          Stock
Dividends, Etc.

 

The provisions of this Agreement
shall apply to any and all shares of capital stock of EVA or any successor or assignee of EVA (whether by merger, consolidation, sale
of assets or otherwise) which may be issued in respect of, in exchange for or in substitution for the shares of Common Stock, by reason
of any stock dividend, split, reverse split, combination, recapitalization, reclassification, merger, consolidation or otherwise in such
a manner and with such appropriate adjustments as to reflect the intent and meaning of the provisions hereof and so that the rights, privileges,
duties and obligations hereunder shall continue with respect to the capital stock of EVA as so changed.

 

Section 9.          Benefits
of Agreement.

 

This Agreement shall be binding
upon and inure to the benefit of the parties hereto, and each of their respective successors and assigns. Neither this Agreement nor any
of the rights or obligations hereunder will be assigned by any of the parties hereto without the prior written consent of the other parties.
Except as otherwise expressly provided herein, no Person not a party to this Agreement, as a third-party beneficiary or otherwise, shall
be entitled to enforce any rights or remedies under this Agreement.

 

Section 10.        Notices.

 

All notices or other communications
which are required or permitted hereunder shall be in writing and shall be deemed to have been given if (a) personally delivered
or sent by facsimile or electronic mail transmission, (b) sent by nationally recognized overnight courier or (c) sent by registered
or certified mail, postage prepaid, return receipt requested, addressed as follows:

 

(i)            If
to EVA, to:

 

Enviva Partners, LP

7272 Wisconsin Avenue

Suite 1800

Bethesda, MD 20814

Attn: General Counsel

Email: william.schmidt@envivabiomass.com

 

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(ii)           If
to any of the Riverstone Stockholders, to:

 

Riverstone Holdings, LLC 

712 Fifth Avenue, 51st Floor 

New York, New York 10019 

Attention: General Counsel 

E-mail:
scoats@riverstonellc.com

 

(iii)          Any
such communication shall be deemed to have been received (a) when delivered, if personally delivered or sent by facsimile or electronic
mail transmission, (b) the next Business Day after delivery, if sent by nationally recognized, overnight courier and (c) on
the third Business Day following the date on which the piece of mail containing such communication is posted, if sent by first-class mail.

 

Section 11.        Modification;
Waiver.

 

This Agreement may be amended,
modified or supplemented only by a written instrument duly executed by EVA and the Riverstone Stockholders; provided that any such amendment,
modification or supplement that only affects the rights of a party shall only require the consent of such affected party and EVA. No course
of dealing between EVA or its Subsidiaries or the Riverstone Stockholders or any delay in exercising any rights hereunder will operate
as a waiver of any rights of any party to this Agreement. The failure of any party to enforce any of the provisions of this Agreement
will in no way be construed as a waiver of such provisions and will not affect the right of such party thereafter to enforce each and
every provision of this Agreement in accordance with its terms.

 

Section 12.        Entire
Agreement.

 

Except as otherwise expressly
provided herein, this Agreement constitutes the entire agreement among the parties pertaining to the subject matter hereof and supersedes
all prior and contemporaneous agreements and understandings of the parties in connection therewith, from and after the completion of the
Conversion.

 

Section 13.        Specific
Performance.

 

Each party to this Agreement
acknowledges that a remedy at law for any breach or attempted breach of this Agreement will be inadequate, agrees that each other party
to this Agreement shall be entitled to specific performance and injunctive and other equitable relief in case of any such breach or attempted
breach, and further agrees to waive (to the extent legally permissible) any legal conditions required to be met for the obtaining of any
such injunctive or other equitable relief (including posting any bond in order to obtain equitable relief).

 

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Section 14.        Counterparts.

 

This Agreement may be executed
in any number of counterparts, and each such counterpart shall be deemed to be an original instrument, but all such counterparts taken
together shall constitute but one agreement.

 

Section 15.        Further
Assurances.

 

Each party hereto shall do
and perform or cause to be done and performed all such further acts and things and shall execute and deliver all such other agreements,
certificates, instruments and other documents as any other party hereto reasonably may request in order to carry out the provisions of
this Agreement and the consummation of the transactions contemplated hereby.

 

[Signature Page to Follow]

 

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The parties have signed this
agreement as of the date first written above.

 

	 	ENVIVA PARTNERS, LP
	 	 	 
	 	By:	Enviva Partners GP, LLC, as its sole general partner
	 	 	 
	 	 	 
	 	By:	/s/ Shai S. Even
	 	Name:	Shai S. Even
	 	Title: 	Executive Vice President and Chief Financial Officer

 

Signature Page to 

Stockholders’ Agreement

 

    

     

    

 

	 	STOCKHOLDERS:
	 	 	 
	 	RIVERSTONE ECHO CONTINUATION HOLDINGS, L.P.
	 	 	 
	 	By: 	Riverstone ECF GP, LLC, its general partner
	 	 	 
	 	 	 
	 	By:	/s/ Peter Haskopoulos
	 	Name:	Peter Haskopoulos
	 	Title:	Managing Director
	 	 	 
	 	 	 
	 	 	 
	 	RIVERSTONE ECHO ROLLOVER HOLDINGS, L.P.
	 	 	 
	 	By:	Riverstone Echo Rollover GP, LLC, its general partner
	 	 	 
	 	 	 
	 	By:	/s/ Peter Haskopoulos
	 	Name:	Peter Haskopoulos
	 	Title:	Managing Director

 

Signature Page to 

Stockholders’ AgreementExhibit 10.1

 

SUPPORT AGREEMENT

 

This Support Agreement (this
 “Agreement”), dated effective as of October 14, 2021, is entered into by and among Enviva Partners, LP,
a Delaware limited partnership (with its successors and permitted assigns (including the resulting Delaware corporation in the EVA Conversion
(as defined below), “Enviva Inc.,” from and after the EVA Conversion), hereinafter called “EVA”),
each of the persons set forth on Exhibit A hereto (each such person, a “Unitholder”, and collectively,
the “Unitholders”), and the Original Parties (as defined below). The Original Parties, the Unitholders and
EVA are collectively referred to as the “Parties” and individually as a “Party.”

 

RECITALS

 

WHEREAS, Enviva Holdings,
LP, a Delaware limited partnership (“Holdings”) and/or certain of its wholly owned subsidiaries are parties
to various agreements with EVA, EVA’s general partner, and/or certain of EVA’s wholly owned subsidiaries, including, without
limitation, make-whole agreements, MSA fee waiver letter agreements, and an interim service agreement associated with EVA’s acquisition
of Holdings’ production plants in Lucedale, Mississippi, and Greenwood, South Carolina, and a marine export terminal in the Port
of Pascagoula, Mississippi, pursuant to which Holdings (or its subsidiaries) agreed to provide various services and other forms of ongoing
operational and financial support to EVA (collectively, the “Existing Support Agreements”);

 

WHEREAS, pursuant
to that certain Agreement and Plan of Merger (the “Merger Agreement”) dated as of the date hereof by and among
Enviva Partners Merger Sub, LLC, a Delaware limited liability company (“Merger Sub”), Holdings, EVA, the Unitholders
(other than Enviva Collateral PledgeCo, LLC (“PledgeCo”)), and the other parties thereto, among other things,
Merger Sub merged with and into Holdings, with Holdings surviving the merger as a wholly owned subsidiary of EVA (the “Holdings
Merger”);

 

WHEREAS, by virtue
of the Holdings Merger, Holdings’ (and its subsidiaries’) obligations under the Existing Support Agreements would be consolidated
with EVA, but the Parties desire to consolidate and convert the existing obligations under the Existing Support Agreements into fixed
payment amounts to be paid by the Unitholders to EVA on specified payment dates, as more fully set forth herein;

 

WHEREAS, in furtherance
of the foregoing, in connection with and effective immediately following the Holdings Merger, among other things, the Parties desire
to amend and restate each Existing Support Agreement in its entirety as set forth in this Agreement, and to novate from the respective
parties thereto to the Unitholders and EVA, such that, none of the original parties to the Existing Support Agreements (collectively
the “Original Parties”) or any Unitholder or Affiliate of any Unitholder will have any further rights or obligations
under or relating to any of the Existing Support Agreements or (other than EVA and the Unitholders) Article 1 of this Agreement;

 

WHEREAS, the Original
Parties have signed and acknowledged this Agreement for the purpose of consenting to and agreeing to such amendments, restatements, and
novations of the Existing Support Agreements as described herein;

 

    

     

    

 

WHEREAS, in connection
with the Holdings Merger, each Series A Unit and each Series B Unit (each as defined in the Second Amended and Restated Agreement
of Limited Partnership of Holdings dated as of July 22, 2020) issued and outstanding as of immediately prior to the Effective Time
(as defined in the Merger Agreement) was converted into the right of the holder thereof to receive common units representing limited
partner interests in EVA (“EVA Units”) as more fully described therein;

 

WHEREAS, following
the Holdings Merger, subject to the requisite approval of the unitholders of EVA, EVA intends to convert into a Delaware corporation
in accordance with a plan of conversion contemplated as of the date hereof (the “Plan of Conversion”) or pursuant
to such other alternative transaction or series of transactions adopted by EVA pursuant to which EVA or its Affiliate or other entity
that succeeds to, directly or indirectly, substantially all of the assets of EVA (other than, if applicable, the interests in EVA indirectly
owned by Enviva Cottondale Acquisition I, LLC (“Acquisition I”) transferred in a potential alternative structure
mutually agreed by Acquisition I and certain of the Parties hereto) becomes a Delaware corporation (by way of a Reorganization (as defined
below), conversion, merger, or otherwise, or any combination of the foregoing), and in any such case whose common stock is issued in
exchange for EVA Units (such conversion (pursuant to the Plan of Conversion) or such other transaction or series of transactions (including
a Reorganization, the “EVA Conversion”), and, following the EVA Conversion, Acquisition I intends to merge
with a subsidiary or affiliate of EVA (the “Acquisition I Merger”);

 

WHEREAS, in connection
with the EVA Conversion, each outstanding EVA Unit will convert or be exchanged into one share of Enviva Inc. common stock (the “EVA
Common Stock”);

 

WHEREAS, subject to
the terms and conditions herein, each Unitholder desires to commit to reinvest all quarterly cash distributions or dividends, as applicable,
in respect of approximately 30.4% of the EVA Units received by such Unitholder in connection with the Holdings Merger (subject to appropriate
adjustments in the event of any distribution, combination or subdivision, such EVA Units and the shares of EVA Common Stock into which
such EVA Units will convert or be exchanged in connection with the EVA Conversion, collectively, “DRIP Securities”)
and such number of EVA Units and EVA Common Stock will bear a restrictive legend reflecting the transfer restrictions set forth herein,
as further described herein; and

 

WHEREAS, subject to
the terms and conditions herein, the Parties desire for the Unitholders to agree to certain transfer and other restrictions and certain
voting arrangements with respect to the EVA Units held by such Unitholders and their respective Affiliates (as defined below) and the
shares of EVA Common Stock into which such EVA Units will convert or be exchanged in connection with the EVA Conversion (collectively,
the “EVA Securities”) as further described herein.

 

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NOW THEREFORE, in
consideration of the premises set forth herein and other good and valuable consideration, the receipt and sufficiency of which are hereby
acknowledged, the Parties covenant and agree as follows:

 

AGREEMENTS

 

Article 1

SUPPORT OBLIGATIONS

 

Section 1.1     Support
Obligations. Riverstone Echo Continuation Holdings, L.P. (“Riverstone Continuation Fund”), Riverstone Echo
Rollover Holdings, L.P. (together with Riverstone Continuation Fund, collectively, the “Riverstone Echo Funds”
and each, a “Riverstone Echo Fund”), and PledgeCo (together with the Riverstone Echo Funds, the “Support
Payors”) shall pay, or cause to be paid, to EVA the amounts set forth below, on or before the dates set forth below (each
a “Payment Date”), in accordance with the terms and conditions of this Article 1. In furtherance
of the foregoing and subject to the terms and conditions of this Article 1, each Support Payor shall pay, or cause to be
paid, to EVA such Support Payor’s pro rata portion (each such amount payable by such Support Payor, subject to adjustment
in connection with a Transfer of EVA Support Securities (as defined below) made in accordance with this Agreement, a “Pro
Rata Portion”) of the following amounts with respect to the corresponding Payment Dates, which Pro Rata Portions are set
forth in Schedule I:

 

	Payment Date:	 	Payment Amount:	 
	November 30, 2021	 	$	0	 
	February 28, 2022	 	$	9,821,419	 
	May 31, 2022	 	$	9,821,419	 
	August 31, 2022	 	$	9,821,419	 
	November 30, 2022	 	$	9,821,419	 
	February 28, 2023	 	$	9,821,419	 
	May 31, 2023	 	$	2,050,000	 
	August 31, 2023	 	$	1,450,000	 
	November 30, 2023	 	$	1,450,000	 
	February 29, 2024	 	$	1,450,000	 
	Last Business Day (as defined in the Merger Agreement)
    of the 2nd month of each calendar quarter beginning on or after April 1, 2024 (if applicable)	 	 	Shortfall
                                            (if any)	 

 

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Section 1.2     Payments.
Not later than each Payment Date, each Support Payor shall make, or cause to be made, a payment to EVA (each, a “Support
Payment”) in immediately available funds and in U.S. dollars in an amount equal to the lesser of (a) such Support
Payor’s Pro Rata Portion for such Payment Date and (b) the total cash dividends or distributions received in the calendar
quarter in which such Payment Date occurs (plus, in the case of the Payment Date that occurs in the first calendar quarter of 2022, the
total cash dividends or distributions received in the calendar quarter immediately preceding the calendar quarter in which such Payment
Date occurs, which shall, for purposes of this Article 1, be treated as dividends or distributions received in the first
calendar quarter of 2022) by or on behalf of such Support Payor in respect of the EVA Support Securities held by such Support Payor as
of the record date for such dividends (“EVA Support Dividends”). If such Support Payor’s Pro Rata Portion
for a Payment Date exceeds the amount of such Support Payor’s EVA Support Dividends received in the calendar quarter in which such
Payment Date occurs (in each case, after giving effect to any assignment by any Support Payor of its Pro Rata Portions and any Transfer
of EVA Support Securities to a transferee who has agreed to assume a proportionate share of such Support Payor’s Pro Rata Portions,
such difference, a “Shortfall”), then such Shortfall shall be added to such Support Payor’s Pro Rata
Portion for the immediately following Payment Date. Each Support Payment shall be applied first to such Support Payor’s Shortfall
for any prior Payment Date and thereafter to such Support Payor’s Pro Rata Portion for the then current Payment Date. If a Shortfall
exists after application of the Support Payment due on February 29, 2024, then such Support Payor shall continue to make, or cause
to be made, Support Payments on each subsequent Payment Date in amounts equal to all EVA Support Dividends received in each such subsequent
calendar quarter until such Shortfall has been reduced to zero. For the avoidance of doubt, the sole source of each Support Payor’s
payment obligations under this Article 1 shall be such Support Payor’s (and such Support Payor’s controlled Affiliates’)
EVA Support Dividends, if any. The obligations of each Support Payor under this Article 1 shall be several and not joint
and several. Notwithstanding anything to the contrary, at any time and from time to time, any Support Payor may prepay all or a portion
of its Pro Rata Portions under this Article 1 without penalty. Such prepayments, if made, shall reduce such Support Payor’s
Pro Rata Portions (after giving effect to any assignment by such Support Payor of its Pro Rata Portions and any Transfer of EVA Support
Securities to a transferee who has agreed to assume a proportionate share of such Support Payor’s Pro Rata Portions) for each remaining
subsequent Payment Date until all such amounts are extinguished.

 

Section 1.3     For
purposes of this Article 1:

 

(a)            “EVA
Support Securities” shall be limited to, without duplication and subject to any Transfers of EVA Support Securities in
accordance with this Agreement, (i) in the case of the Riverstone Echo Funds, (x) the 7,578,921 EVA Units held directly by
the Riverstone Echo Funds immediately prior to the Holdings Merger plus (y) the EVA Units acquired by the Riverstone Echo Funds
in the Holdings Merger (other than any DRIP Securities), (ii) in the case of PledgeCo, the 6,007,454 EVA Units held by PledgeCo
immediately prior to the Holdings Merger, and (iii) in each such case, the EVA Common Stock into which the EVA Units specified in
clauses (i) or (ii) will convert or be exchanged in the EVA Conversion or the Acquisition I Merger, as applicable.

 

Section 1.4     Tax
Treatment. Except as otherwise required by law, the Parties intend that any payments made under Article 1 of this Agreement
will be characterized for U.S. federal income tax purposes as additional consideration paid for equity interests of EVA under the Merger
Agreement (excluding the DRIP Securities).

 

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Section 1.5     Schedule
I. A separate Schedule I shall be attached to this Agreement for each Unitholder; provided, however, that no Management
Unitholder shall be entitled to view or receive a copy of any other Management Unitholder’s Schedule I. Each Unitholder’s
Schedule I shall set forth such Unitholder’s Pro Rata Portions (if applicable), aggregate number of DRIP Securities, and aggregate
number of EVA Support Securities (if applicable).

 

Section 1.7     Acquisition
I Merger In connection with the Acquisition I Merger and the acquisition directly or indirectly by the Riverstone Echo Funds of
the EVA Securities issued in exchange for the EVA Securities held by PledgeCo immediately prior to the Acquisition I Merger (the
 “PledgeCo EVA Securities”), and without further action on the part of any Party or other person,
(a) PledgeCo shall automatically cease to be a Support Payor and a Party, (b) PledgeCo shall be deemed to have assigned
and Transferred to each of the Riverstone Echo Funds, and each of the Riverstone Echo Funds shall be deemed to have assumed, in each
case, pro rata to such Riverstone Echo Fund’s equity ownership of Acquisition I prior to the Acquisition I Merger, the
obligations of PledgeCo under Article 1 hereunder, and (c) Schedule I of PledgeCo and each Riverstone Echo Fund shall be
updated to reflect the foregoing.

 

Article 2

DIVIDEND REINVESTMENT

 

Section 2.1     Dividend
Reinvestment. Each Unitholder agrees to reinvest all regular quarterly distributions or dividends in respect of such Unitholder’s
DRIP Securities (if any) in respect of all calendar quarters from the calendar quarter ending September 30, 2021 through and including
the calendar quarter ending December 31, 2024 (“EVA DRIP Dividends”). To the extent EVA has established
and made available a broad distribution or dividend reinvestment plan (i.e., a plan registered on Form S-3D or any appropriate successor
form), the Unitholders’ reinvestment will be pursuant to such plan. To the extent no such plan is available, then, subject to applicable
law, the Unitholders’ reinvestment in EVA will be made in a private sale between such Unitholder and EVA, with the EVA Securities
issued pursuant thereto at a purchase price equal to twenty (20) day volume weighted average closing price (“VWAP”)
of such EVA Securities on the New York Stock Exchange (or such other national securities exchange on which EVA Securities are then traded)
as of the trading day prior to the date such units or shares trade “ex-div” in respect of the applicable calendar quarter.
Any EVA Securities issued on account of reinvested distributions or dividends on DRIP Securities will be DRIP Securities for all purposes
of this Agreement.

 

Section 2.2     Transfer
Agent. Each Management Unitholder agrees that such Management Unitholder’s DRIP Securities shall be held by EVA’s transfer
agent (the “Transfer Agent”) until the reinvestment obligations of such Management Unitholder under Section 2.1
have terminated. At the request of such Management Unitholder, EVA shall instruct the Transfer Agent to transfer all DRIP Securities
that are not otherwise required to be held by the Transfer Agent pursuant to any other agreement to which such Management Unitholder
is a party to such Management Unitholder when the applicable restrictions and obligations hereunder have been satisfied in full and to
remove the legend set forth in Section 3.2(e).

 

    5

     

    

 

Article 3

VOTING and transfers

 

Section 3.1     Voting.
Each Unitholder agrees that, if EVA seeks unitholder approval of the EVA Conversion and any transactions or matters related thereto,
such Unitholder shall, and shall cause such Unitholder’s Affiliates to, vote all EVA Units then held (directly or indirectly) by
such Unitholder or such Unitholder’s Affiliates (whether acquired in the public market, as a result of the Holdings Merger, or
otherwise) in favor of the EVA Conversion and such other proposals related thereto; provided, however, the Unitholders’
obligations under this Section 3.1 shall terminate automatically upon the earlier of the (a) completion of the unitholder
vote regarding the EVA Conversion and (b) EVA’s determination to abandon or terminate the EVA Conversion (the “Conversion
Termination”); provided further, however, that if the EVA Conversion based on the Plan of Conversion does not occur
on or prior to December 30, 2021 and a Riverstone Echo Fund reasonably determines that the EVA Conversion based on the Plan of Conversion
could have material adverse tax consequences to the beneficial owners of such Rivertone Echo Fund, (i) the Riverstone Echo Funds
and EVA shall cooperate in good faith to restructure the EVA Conversion in a manner reasonably acceptable to each of the Riverstone Echo
Funds and to EVA and (ii) neither of the Riverstone Echo Funds shall have any obligation to vote in favor of the EVA Conversion
based on the Plan of Conversion.

 

Section 3.2     Transfer
Restrictions.

 

(a)            Each
Unitholder agrees that such Unitholder shall not, and shall not permit any controlled Affiliate of such Unitholder to, Transfer any EVA
Securities held (directly or indirectly) by such Unitholder or such Unitholder’s Affiliates (whether acquired in the public market,
as a result of the Holdings Merger, or otherwise) until the earlier of (i) the completion of the unitholder vote regarding the EVA
Conversion and (ii) the EVA Conversion Termination; provided, however, the foregoing restrictions shall not apply
to Transfers between or among a Unitholder and its Affiliates provided that in the case of a Transfer from a Unitholder to one or more
of such Unitholder’s Affiliates each such transferee executes and delivers to EVA a Joinder pursuant to which such transferee shall
become a Unitholder for purposes of this Article 3.

 

(b)            Subject
to Section 3.2(a), each Unitholder’s EVA Securities shall remain freely transferable and neither Article 1
nor Article 2 shall restrict the ability of any Unitholder to Transfer EVA Securities; provided that (i) with
respect to Transfers of EVA Support Securities, (A) such Unitholder shall Transfer a proportionate share of its Pro Rata Portions
and the obligations of such transferring Unitholder under Article 1 with respect to the EVA Support Securities so Transferred
to a transferee who expressly assumes such share and obligations and executes and delivers to EVA a joinder agreement in the form of
Exhibit A hereto (a “Joinder”), and, if applicable, the applicable Schedule Is shall be
updated to reflect the modified Pro Rata Portions, or (B) in the event that such transferee does not execute a Joinder, such transferring
Unitholder shall, in connection with such Transfer, prepay a proportionate share of its aggregate Pro Rata Portions of the support obligations
under Article 1; and (ii) with respect to Transfers of DRIP Securities, (A) such Unitholder shall Transfer a proportionate
share of the obligations of such transferring Unitholder under Article 2 with respect to such transferred DRIP Securities
to a transferee who expressly assumes such obligations and executes and delivers to EVA a Joinder, and the applicable Schedule Is
shall be updated to reflect the modified numbers of DRIP Securities and (B) solely with respect to Transfers of DRIP Securities
by a Riverstone Echo Fund, instead of complying with the foregoing requirement in (A) to execute a Joinder, such Riverstone Echo
Fund may agree that to the extent any DRIP Securities are Transferred without a corresponding assumption of obligations under Article 2,
then such transferring Riverstone Echo Fund will, immediately following each calendar quarter through the calendar quarter ending December 31,
2024 and subject to applicable law, purchase from EVA in a private sale a number of newly issued EVA Securities equal to (x) the
aggregate quarterly distribution with respect to such Transferred EVA Securities divided by (y) the purchase price for each new
EVA Security, which shall be equal to the twenty (20) day VWAP of such EVA Security on the New York Stock Exchange (or such other national
securities exchange on which EVA Securities are traded) as of the trading day prior to the date such units or shares trade “ex-div”
in respect of the applicable calendar quarter.

 

    6

     

    

 

(c)            For
purposes of this Agreement, the term “Transfer” shall mean the (i) sale of, offer to sell, contract or
agreement to sell, hypothecate, pledge, grant of any option to purchase, or otherwise dispose of or agreement to dispose of, directly
or indirectly, or establishment or increase of a put equivalent position or liquidation with respect to or decrease of a call equivalent
position within the meaning of Section 16 of the Securities Exchange Act of 1934, as amended, and the rules and regulations
of the U.S. Securities and Exchange Commission promulgated thereunder with respect to, any security, (ii) entry into any swap or
other arrangement that transfers to another, in whole or in part, any of the economic consequences of ownership of any security, whether
any such transaction is to be settled by delivery of such securities, in cash or otherwise, or (iii) public announcement of any
intention to effect any transaction specified in clause (i) or (ii).

 

(d)            Each
book entry for the EVA Securities shall contain a notation, and each certificate (if any) evidencing the EVA Securities shall be stamped
or otherwise imprinted with a legend, in substantially the following form:

 

“THE SECURITIES REPRESENTED HEREBY
HAVE NOT BEEN REGISTERED UNDER THE UNITED STATES SECURITIES ACT OF 1933, AS AMENDED, OR THE SECURITIES LAWS OF ANY STATE OR OTHER JURISDICTION,
AND MAY NOT BE SOLD OR TRANSFERRED IN THE ABSENCE OF SUCH REGISTRATION OR AN EXEMPTION THEREFROM.”

 

(e)            In
addition to the legend requirements of Section 3.2(d), each book entry for the DRIP Securities shall contain a notation,
and each certificate (if any) evidencing the DRIP Securities shall be stamped or otherwise imprinted with a legend, in substantially
the following form:

 

“IN ADDITION, THESE SECURITIES
ARE SUBJECT TO THE APPLICABLE PROVISIONS OF THE SUPPORT AGREEMENT, DATED AS OF OCTOBER 14, 2021, BY AND AMONG ENVIVA PARTNERS, LP (WITH
ITS SUCCESSORS AND PERMITTED ASSIGNS) AND EACH OF THE OTHER PARTIES THERETO, INCLUDING SECTION 2.1 (DIVIDEND REINVESTMENT)
AND THE LIMITATIONS ON TRANSFER SET FORTH IN SECTION 3.2 (TRANSFER RESTRICTIONS) THEREOF.”

 

(f)            In
addition to the legend requirements of Section 3.2(d), each book entry for the EVA Support Securities shall contain a notation,
and each certificate (if any) evidencing the EVA Support Securities shall be stamped or otherwise imprinted with a legend, in substantially
the following form:

 

“IN ADDITION, THESE SECURITIES
ARE SUBJECT TO THE APPLICABLE PROVISIONS OF THE SUPPORT AGREEMENT, DATED AS OF OCTOBER 14, 2021, BY AND AMONG ENVIVA PARTNERS, LP (WITH
ITS SUCCESSORS AND PERMITTED ASSIGNS) AND EACH OF THE OTHER PARTIES THERETO, INCLUDING ARTICLE 1 (SUPPORT OBLIGATIONS) AND
THE LIMITATIONS ON TRANSFER SET FORTH IN  SECTION 3.2 (TRANSFER RESTRICTIONS) THEREOF.”

 

(g)            In
addition to the legend requirements of Section 3.2(d), each book entry for the EVA Support Securities held directly or indirectly
by the Riverstone Echo Funds immediately prior to the Merger shall contain a notation, and each certificate (if any) evidencing such
EVA Support Securities shall be stamped or otherwise imprinted with a legend, in substantially the following form:

 

“THE SECURITIES REPRESENTED HEREBY
WERE HELD DIRECTLY OR INDIRECTLY BY THE RIVERSTONE ECHO FUNDS (AS DEFINED IN THE SUPPORT AGREEMENT) IMMEDIATELY PRIOR TO THE MERGER CONSUMMATED
PURSUANT TO THAT CERTAIN AGREEMENT AND PLAN OF MERGER, DATED AS OF OCTOBER 14, 2021, BY AND AMONG Enviva
Partners Merger Sub, LLC, ENVIVA Holdings, LP, ENVIVA PARTNERS, LP AND EACH OF THE OTHER PARTIES THERETO.”

 

(h)            The
legend requirements of Section 3.2(d) shall terminate as to the applicable EVA Securities (i) when and so long
as such EVA Securities shall have been effectively registered under the Securities Act of 1933, as amended (the “Securities
Act”) and disposed of pursuant thereto or disposed of pursuant to the provisions of Rule 144 under the Securities
Act (or any successor rule) thereof or (ii) when EVA shall have received an opinion of counsel (or such other evidence) reasonably
satisfactory to it that such EVA Securities may be Transferred without registration thereof under the Securities Act and that such legend
may be removed.   The legend requirements of Sections 3.2(e) and 3.2(f), as applicable, shall terminate
when the applicable restrictions and obligations under the Support Agreement have been satisfied in full, and the legend requirements
of Section 3.2(g) shall terminate contemporaneously with the termination of the legend requirements of Section 3.2(f). 
Whenever the restrictions imposed by Section 3.2(d), (e), (f), or (g), as applicable, shall terminate
as to any EVA Securities, the holder thereof, shall be entitled to removal of the applicable book-entry notation or, if such EVA Securities
are certificated, to receive from EVA, at EVA’s expense, a new certificate not bearing the applicable restrictive legend.

 

    7

     

    

 

Article 4

MISCELLANEOUS

 

Section 4.1     Entire
Agreement. This Agreement supersedes each of the Existing Support Agreements and all prior oral discussions and written agreements
among the Parties with respect to the subject matter of this Agreement. This Agreement contains the sole and entire agreement among the
Parties hereto with respect to the subject matter hereof.

 

Section 4.2     Acknowledgement.
Each of the Original Parties and EVA hereby acknowledges and agrees that (a) each of the Existing Support Agreements to which it
is a party is being amended, restated, and novated for the purposes stated herein, (b) no Original Party nor any Unitholder nor
any Affiliate of any Unitholder has any further rights or obligations under the Existing Support Agreements, and (c) all obligations
of the Original Parties and EVA pursuant to the Existing Support Agreements required to be satisfied or performed prior to the date hereof
have been satisfied or performed in full. Each of Holdings and Lucedale further acknowledges and agrees that, for the avoidance of doubt,
the Guaranty, dated as of July 1, 2021, by and between Holdings and Lucedale shall automatically terminate in accordance with its
terms concurrently with the execution of this Agreement.

 

Section 4.3     Successors
and Assigns.

 

(a)            All
of the terms of this Agreement will be binding upon, and inure to the benefit of, and be enforceable by, the Parties and their respective
successors and permitted assigns.

 

(b)            Neither
this Agreement nor any of the rights, interests, or obligations hereunder shall be assignable by (i) EVA without the prior written
consent of each of the Riverstone Echo Funds or (ii) a Unitholder without the prior written consent of EVA; provided, however,
EVA may assign its rights, interests, or obligations hereunder to a wholly owned subsidiary of EVA or to Enviva Inc. without the prior
written consent of any Party; provided, further, that, without the prior written consent of EVA, (A) the obligations
set forth in Article 1 may be assigned by a Support Payor in connection with a Transfer of EVA Securities to a transferee
who expressly assumes the obligations of such Support Payor set forth in Article 1 and executes and delivers a Joinder to
EVA in accordance with Section 3.2(b)(i)(A); (B) the obligations set forth in Article 2 relating to DRIP
Securities may be assigned by a Unitholder in connection with a Transfer of such DRIP Securities, subject to compliance with the requirements
of Section 3.2(b); and (C) the obligations set forth in Article 3 relating to voting and Transfers may be
assigned by a Unitholder to such Unitholder’s Affiliate subject to compliance with the requirements of Section 3.2(a).

 

    8

     

    

 

Section 4.4     Amendments
and Waivers. All amendments to this Agreement (including to any Schedule I) must be in writing and signed by EVA and each
of the Riverstone Echo Funds; provided, however, that any amendment that would materially and adversely affect any Unitholder,
in such Unitholder’s capacity as a Unitholder, must also be approved by such adversely affected Unitholder; provided, further,
however, that any amendment that would materially and adversely affect (on a proportionate basis) all of the Unitholders that, immediately
prior to the Effective Time, held Series B Units (the “Management Unitholders”), in their respective capacities
as such, may in lieu of the approval of each Management Unitholder pursuant to the preceding proviso, instead be approved by the Management
Unitholders then holding a majority of the EVA Securities held by all Management Unitholders. EVA and each of the Riverstone Echo Funds,
as applicable, may, only by an instrument in writing, waive compliance by any Unitholder (in the case of a waiver given by EVA) or EVA
(in the case of a waiver given by the Riverstone Echo Funds) with any term or provision of this Agreement. The waiver by any Party of
a breach of any term or provision of this Agreement shall not be construed as a waiver of any subsequent breach. Except as otherwise
expressly provided herein, no failure to exercise, delay in exercising, or single or partial exercise of any right, power, or remedy
by a Party, and no course of dealing between the Parties, shall constitute a waiver of any such right, power, or remedy. Notwithstanding
anything to the contrary, any Unitholder’s Schedule I may be amended by EVA from time to time without the consent of any
other Party to reflect changes in such information (including changes to such Unitholder’s Pro Rata Portions as a result of a Transfer
of EVA Support Securities by such Unitholder in compliance with this Agreement and changes to such Unitholder’s number of DRIP
Securities as a result of a Transfer of DRIP Securities by such Unitholder in compliance with this Agreement) in accordance with this
Agreement. Any other amendment to a Unitholder’s Schedule I shall also require the consent of such Unitholder.

 

Section 4.5     Notices.
Unless otherwise provided herein, all notices, requests, consents, approvals, demands, and other communications to be given hereunder
will be in writing and will be deemed given upon(a)  confirmed delivery by a reputable overnight carrier or when delivered
by hand, addressed to the respective Parties listed below at the following addresses (or such other address for a Party hereto as will
be specified by like notice); (b) actual receipt; (c) the expiration of four (4) Business Days after the day when mailed
by registered or certified mail (postage prepaid, return receipt requested), addressed to the respective Parties listed below at the
following addresses (or such other address for a Party hereto as will be specified by like notice); or (d) delivery by electronic
mail to a Party at the electronic mail address set forth below (or at such other address as such Party shall designate by like notice):

 

If to any Unitholder, to
the address set forth in such Unitholder’s Schedule I.

 

If to EVA or an Original
Party, addressed to:

 

Enviva Partners, LP or, from and after the EVA Conversion,

Enviva Inc.

7272 Wisconsin Avenue

Suite 1800

Bethesda, MD 20814

Attn: General Counsel

Email: william.schmidt@envivabiomass.com

 

Section 4.6     Governing
Law. This Agreement shall be governed by and construed in accordance with the laws of the State of Delaware without reference to
the choice of law principles thereof.

 

    9

     

    

 

Section 4.7     Dispute
Resolution; Waiver of Jury Trial.

 

(a)            Each
of the Parties (i) consents to submit itself to the exclusive personal
jurisdiction and venue of any U.S. federal court located in the State of Delaware or any Delaware state court with respect to any suit
relating to or arising out of this Agreement or any of the transactions contemplated hereby, (ii) agrees it will not attempt to
defeat or deny such personal jurisdiction or venue by motion or otherwise, (iii) agrees it will not bring any such suit in any court
other than a U.S. federal or state court sitting in the State of Delaware, (iv) irrevocably agrees any such suit (whether at law,
in equity, in contract, in tort, or otherwise) shall be heard and determined exclusively in such U.S. federal or state court sitting
in the State of Delaware, (v) agrees to service of process in any such action in any manner prescribed by the laws of the State
of Delaware, and (vi) agrees service of process upon such Party in any action or proceeding shall be effective if notice is given
in accordance with Section 4.5.

 

(b)            EACH
PARTY ACKNOWLEDGES AND AGREES ANY SUCH CONTROVERSY THAT MAY ARISE UNDER THIS AGREEMENT IS LIKELY TO INVOLVE COMPLICATED AND DIFFICULT
ISSUES, AND THEREFORE EACH SUCH PARTY HEREBY IRREVOCABLY AND UNCONDITIONALLY WAIVES ANY RIGHT SUCH PARTY MAY HAVE TO A TRIAL BY
JURY IN RESPECT OF ANY SUCH LITIGATION DIRECTLY OR INDIRECTLY ARISING OUT OF OR RELATING TO THIS AGREEMENT.

 

Section 4.8     Severability.
In the event any of the provisions hereof are held to be invalid or unenforceable under applicable laws, the remaining provisions hereof
will not be affected thereby. In such event, the Parties hereto agree and consent such provisions and this Agreement will be modified
and reformed so as to effect the original intent of the Parties as closely as possible with respect to those provisions that were held
to be invalid or unenforceable.

 

Section 4.9     Rights
of Third Parties. Nothing expressed or implied in this Agreement is intended or shall be construed to confer upon or give any person,
other than the Parties, any right or remedies under or by reason of this Agreement; provided that Affiliates of Unitholders are intended
third party beneficiaries of and are entitled to enforce the provisions of Section 4.2 hereof.

 

Section 4.10     Counterparts.
This Agreement may be executed by electronic mail exchange of .pdf signature pages and in one or more counterparts, all of which
shall be considered one and the same agreement, and shall become effective when one or more counterparts have been signed by each Party
hereto and delivered (including by electronic mail exchange of .pdf signature pages) to the other Parties hereto.

 

Section 4.11     Specific
Performance. The Parties agree if any of the provisions of this Agreement were not performed in accordance with their specific terms
or were otherwise breached, irreparable damage would occur and money damages may not be a sufficient remedy. In addition to any other
remedy at law or in equity, each of the Unitholders and EVA shall be entitled to specific performance by each other Party of its obligations
under this Agreement and immediate injunctive relief, without the necessity of proving the inadequacy of money damages as a remedy.

 

    10

     

    

 

 

Section 4.12          Certain
Definitions. For purposes of this Agreement, the term “Affiliate” means with respect to a person, any other
person controlling, controlled by, or under common control with such person, and “control”, including the correlative
terms “controlling”, “controlled by”, and “under common control with”
means the possession, directly or indirectly, of the power to direct or cause the direction of the management or policies of a person,
whether through ownership of voting securities, by contract or otherwise.

 

Section 4.13         Reorganization.

 

(a)          Notwithstanding
anything to the contrary in this Agreement (including Article 3), if the definitive proxy statement for the EVA Conversion
based on the Plan of Conversion has not been mailed by December 16, 2021 and as of such time the EVA Conversion Termination has
not occurred, the Riverstone Echo Funds may (but shall not be required to) cause any or all of the other Unitholders to contribute such
Unitholder’s EVA Units to an entity (the “Newco”), which entity may be controlled directly or indirectly
by the Riverstone Echo Funds, in exchange for equity interests in such entity for the purpose of effecting an EVA Conversion using an
alternate structure (any such conversion, contribution or exchange, as applicable, a “Reorganization”); provided,
however, that to the extent applicable (as determined by the Riverstone Echo Funds) in connection with any Reorganization, each
Unitholder (in its capacity as a Unitholder) shall retain such Unitholder’s respective rights, obligations and privileges relative
to each of the other Unitholders (in their respective capacities as such) as set forth in the Transaction Documents (as defined in the
Merger Agreement) and in any other agreement then in effect by or among a Unitholder and the Riverstone Echo Funds with respect to such
EVA Units. The Unitholders shall take all actions reasonably requested by the Riverstone Echo Funds in connection with the consummation
of such Reorganization, including (i) consenting to, voting for and waiving any dissenters’ rights, appraisal rights or similar
rights and (ii) participating in any exchange or other transaction required in connection with such Reorganization. No Unitholder
(other than the Riverstone Echo Funds) shall have any right to vote, consent to or approve any Reorganization.

 

(b)         At
the request of the Riverstone Echo Funds, EVA shall cooperate in good faith to effect a mutually agreeable tax efficient structure for
the EVA Conversion.

 

(c)          In
connection with a Reorganization, the Riverstone Echo Funds may (but shall not be required to) cause the Unitholders who contribute EVA
Units to Newco to assign and Transfer to Newco the obligations of such contributing Unitholders hereunder. In such case, the Riverstone
Echo Funds shall cause Newco to execute a Joinder, and Schedule I of each of the contributing Unitholders and Newco shall be updated
to reflect the foregoing. In no event shall any EVA Units contributed by any of the Management Unitholders to Newco constitute EVA Support
Securities nor shall any distributions or dividends on such EVA Units constitute EVA Support Dividends. To the extent Newco assumes any
obligations hereunder in connection with a Reorganization, the contributing Unitholders shall cause Newco to assign and Transfer to the
contributing Unitholders, and the contributing Unitholders shall assume, all such obligations prior to such time that EVA Units are converted
into or exchanged for EVA Common Stock in connection with the Conversion, and Schedule I of the contributing Unitholders and Newco shall
be updated to reflect the foregoing.

 

[The remainder of this page has been left
blank intentionally; the signature pages follow.]

 

    11

     

    

 

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

 

	 	ENVIVA PARTNERS, LP

 

		By:	Enviva Partners GP, LLC, as its sole general partner

 

 

		By:	/s/ Shai S. Even

		Name:	Shai S. Even

		Title:	Executive Vice President and Chief Financial Officer

 

	 	RIVERSTONE ECHO CONTINUATION HOLDINGS,
                                            L.P.

 

		By:	Riverstone ECF GP, LLC, its general partner

 

 

		By:	/s/ Peter Haskopoulos

		Name:	Peter Haskopoulos

		Title:	Managing Director

 

 

	 	RIVERSTONE ECHO ROLLOVER HOLDINGS, L.P.

 

		By:	Riverstone Echo Rollover GP, LLC, its general partner

 

 

		By:	/s/ Peter Haskopoulos

		Name:	Peter Haskopoulos

		Title:	Managing Director

 

Signature
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Support
Agreement

 

     

     

    

 

	 	ENVIVA COLLATERAL PLEDGECO, LLC

 

		By:	Enviva Cottondale Acquisition I, LLC, its member

 

		By:	Riverstone Echo Continuation Holdings, L.P., its member

 

		By:	Riverstone ECF GP, LLC, its general partner

 

 

		By:	/s/
                                            Peter Haskopoulos
	 	Name:	Peter Haskopoulos

		Title:	Managing Director

 

 

		By:	Riverstone Echo Rollover Holdings, L.P., its member

 

		By:	Riverstone Echo Rollover GP, LLC, its general partner

 

 

		By:	/s/
                                            Peter Haskopoulos
	 	Name:	Peter Haskopoulos

		Title:	Managing Director

 

Signature
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Support
Agreement

 

     

     

    

 

	 	/s/ John
                                            K. Keppler
	 	John K. Keppler
	 	 
	 	 
	 	/s/ Thomas Meth
	 	Thomas Meth
	 	 
	 	 
	 	/s/ William H. Schmidt, Jr.
	 	William H. Schmidt, Jr.
	 	 
	 	 
	 	/s/ Shai S. Even
	 	Shai S. Even
	 	 
	 	 
	 	/s/ Edward R. Smith
	 	Edward R. Smith
	 	 
	 	 
	 	/s/ Yanina A. Kravtsova
	 	Yanina A. Kravtsova
	 	 
	 	 
	 	/s/ Joseph N. Lane
	 	Joseph N. Lane
	 	 
	 	 
	 	/s/ Nortbert A. Hintz
	 	Norbert A. Hintz
	 	 
	 	 
	 	/s/ John-Paul D. Taylor
	 	John-Paul D. Taylor

 

Signature
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Support
Agreement

 

     

     

    

 

ACKNOWLEDGED AND AGREED,

 

as of the date first written above, with respect to, as applicable,
(a) that certain Make-Whole Agreement, dated as of July 1, 2020, by and between Enviva Holdings, LP and Enviva, LP, (b) that
certain Letter Agreement, dated as of July 1, 2020, by and among Enviva Management Company, LLC, Enviva Partners, LP, Enviva Partners
GP, LLC, and certain subsidiaries of Enviva Partners, LP named therein, (c) that certain Make-Whole Agreement, dated as of July 1,
2021, by and between Enviva Holdings, LP and Enviva, LP, (d) that certain Letter Agreement, dated as of July 1, 2021, by and
among Enviva Management Company, LLC, Enviva Partners, LP, Enviva Partners GP, LLC, and certain subsidiaries of Enviva Partners, LP named
therein, (e) that certain Interim Services Agreement, dated as of July 1, 2021, by and among Enviva Lucedale Operator, LLC,
Enviva Pellets Lucedale, LLC, and Enviva Management Company, LLC, and (f) that certain Affiliate Wood Supply Master Agreement, dated
as of July 2015, by and between Enviva FiberCo, LLC and Enviva Pellets Northampton, LLC (on behalf of itself and its affiliates),
and all confirmations thereunder:

 

ENVIVA HOLDINGS, LP

 

	By:	Enviva Holdings GP, LLC, as its sole general partner	 

 

 

	By:	/s/ Shai S. Even	 

	Name:	Shai S. Even	 

	Title:	Executive Vice President and Chief Financial Officer	 

 

 

ENVIVA MANAGEMENT COMPANY, LLC

 

 

	By:	/s/ Shai S. Even	 

	Name:	Shai S. Even	 

	Title:	Executive Vice President and Chief Financial Officer	 

 

 

ENVIVA LUCEDALE OPERATOR, LLC

 

 

	By:	/s/ Shai S. Even	 

	Name:	Shai S. Even	 

	Title:	Executive Vice President and Chief Financial Officer	 

 

Signature
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Support
Agreement

 

     

     

    

 

ENVIVA PARTNERS GP, LLC

 

 

	By:	/s/ Shai S. Even	 

	Name:	Shai S. Even	 

	Title:	Executive Vice President and Chief Financial Officer	 

 

 

ENVIVA, LP

 

By: Enviva GP, LLC, as its sole general
partner

 

 

	By:	/s/ Shai S. Even	 

	Name:	Shai S. Even	 

	Title:	Executive Vice President and Chief Financial Officer	 

 

 

ENVIVA GP, LLC

 

 

	By:	/s/ Shai S. Even	 

	Name:	Shai S. Even	 

	Title:	Executive Vice President and Chief Financial Officer	 

 

 

ENVIVA PELLETS AHOSKIE, LLC

 

 

	By:	/s/ Shai S. Even	 

	Name:	Shai S. Even	 

	Title:	Executive Vice President and Chief Financial Officer	 

 

Signature
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Agreement

 

     

     

    

 

ENVIVA PELLETS AMORY, LLC

 

 

	By:	/s/ Shai S. Even	 

	Name:	Shai S. Even	 

	Title:	Executive Vice President and Chief Financial Officer	 

 

 

ENVIVA PELLETS NORTHAMPTON, LLC

(on behalf of itself and its affiliates)

 

	By:	/s/ Shai S. Even	 

	Name:	Shai S. Even	 

	Title:	Executive Vice President and Chief Financial Officer	 

 

 

ENVIVA PELLETS COTTONDALE, LLC

 

 

	By:	/s/ Shai S. Even	 

	Name:	Shai S. Even	 

	Title:	Executive Vice President and Chief Financial Officer	 

 

 

ENVIVA PORT OF CHESAPEAKE, LLC

 

 

	By:	/s/ Shai S. Even	 

	Name:	Shai S. Even	 

	Title:	Executive Vice President and Chief Financial Officer	 

 

 

ENVIVA ENERGY SERVICES, LLC

 

 

	By:	/s/ Shai S. Even	 

	Name:	Shai S. Even	 

	Title:	Executive Vice President and Chief Financial Officer	 

 

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ENVIVA PELLETS SAMPSON, LLC

 

 

	By:	/s/ Shai S. Even	 

	Name:	Shai S. Even	 

	Title:	Executive Vice President and Chief Financial Officer	 

 

 

ENVIVA PELLETS SOUTHAMPTON, LLC

 

 

	By:	/s/ Shai S. Even	 

	Name:	Shai S. Even	 

	Title:	Executive Vice President and Chief Financial Officer	 

 

 

ENVIVA PORT OF PANAMA CITY, LLC

 

 

	By:	/s/ Shai S. Even	 

	Name:	Shai S. Even	 

	Title:	Executive Vice President and Chief Financial Officer	 

 

 

ENVIVA PORT OF WILMINGTON, LLC

 

 

	By:	/s/ Shai S. Even	 

	Name:	Shai S. Even	 

	Title:	Executive Vice President and Chief Financial Officer	 

 

 

ENVIVA PELLETS WAYCROSS, LLC

 

 

	By:	/s/ Shai S. Even	 

	Name:	Shai S. Even	 

	Title:	Executive Vice President and Chief Financial Officer	 

 

Signature
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ENVIVA PORT OF SAVANNAH, LLC

 

 

	By:	/s/ Shai S. Even	 

	Name:	Shai S. Even	 

	Title:	Executive Vice President and Chief Financial Officer	 

 

 

ENVIVA PELLETS GREENWOOD HOLDINGS
II, LLC

 

 

	By:	/s/ Shai S. Even	 

	Name:	Shai S. Even	 

	Title:	Executive Vice President and Chief Financial Officer	 

 

 

ENVIVA PELLETS GREENWOOD HOLDINGS,
LLC

 

 

	By:	/s/ Shai S. Even	 

	Name:	Shai S. Even	 

	Title:	Executive Vice President and Chief Financial Officer	 

 

 

ENVIVA PELLETS GREENWOOD, LLC

 

 

	By:	/s/ Shai S. Even	 

	Name:	Shai S. Even	 

	Title:	Executive Vice President and Chief Financial Officer	 

 

 

ENVIVA JV2 HOLDINGS, LLC

 

 

	By:	/s/ Shai S. Even	 

	Name:	Shai S. Even	 

	Title:	Executive Vice President and Chief Financial Officer	 

 

Signature
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ENVIVA PELLETS LUCEDALE, LLC

 

 

	By:	/s/ Shai S. Even	 

	Name:	Shai S. Even	 

	Title:	Executive Vice President and Chief Financial Officer	 

 

 

ENVIVA PORT OF PASCAGOULA, LLC

 

 

	By:	/s/ Shai S. Even	 

	Name:	Shai S. Even	 

	Title:	Executive Vice President and Chief Financial Officer	 

 

 

ENVIVA DEVELOPMENT FINANCE COMPANY,
LLC

 

 

	By:	/s/ Shai S. Even	 

	Name:	Shai S. Even	 

	Title:	Executive Vice President and Chief Financial Officer	 

 

 

ENVIVA FIBERCO, LLC

 

 

	By:	/s/ Shai S. Even	 

	Name:	Shai S. Even	 

	Title:	Executive Vice President and Chief Financial Officer	 

 

Signature
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Source: [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00334-of-00352.parquet"}, [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00334-of-00352.parquet"}]]