Document:

Exhibit 4.1

 

Execution Version

 

WARRANT AGREEMENT

 

between

 

TortoiseEcofin
Acquisition Corp. III

 

and

 

CONTINENTAL STOCK TRANSFER & TRUST COMPANY

 

WARRANT AGREEMENT

 

Dated as of July 19, 2021

 

THIS WARRANT AGREEMENT (this “Agreement”),
dated as of July 19, 2021, is by and between TortoiseEcofin Acquisition Corp. III, a Cayman Islands exempted company (the “Company”),
and Continental Stock Transfer & Trust Company, a New York corporation, as warrant agent (the “Warrant Agent,”
also referred to herein as the “Transfer Agent”).

 

WHEREAS, on July 19, 2021, the Company entered
into that certain Private Placement Warrants Purchase Agreement with TortoiseEcofin Borrower LLC, a Delaware limited liability company
(“TortoiseEcofin Borrower”), pursuant to which TortoiseEcofin Borrower will purchase an aggregate of 6,333,333
warrants (or up to 6,933,333 warrants if the Over-allotment Option (as defined below) in connection with the Offering (as defined below)
is exercised in full) simultaneously with the closing of the Offering (and the closing of the Over-allotment Option, if applicable) bearing
the legend set forth in Exhibit B hereto (the “Private Placement Warrants”) at a purchase price of $1.50
per Private Placement Warrant;

 

WHEREAS, in order to finance the Company’s
transaction costs in connection with an intended initial Business Combination, TortoiseEcofin Sponsor III LLC, a Cayman Islands limited
liability company (the “Sponsor”) or an affiliate of the Sponsor or certain of the Company’s officers
and directors may loan to the Company funds, of which up to $1,500,000 of such loans may be convertible into up to an additional 1,000,000
Private Placement Warrants at a price of $1.50 per warrant;

 

WHEREAS, the Company is engaged in an initial public
offering (the “Offering”) of units of the Company’s equity securities, each such unit comprised of one
Ordinary Share (as defined below) and one-fourth of one Public Warrant (as defined below) (the “Units”) and,
in connection therewith, has determined to issue and deliver up to 8,625,000 redeemable warrants (including up to 1,125,000 redeemable
warrants subject to the Over-allotment Option) to public investors in the Offering (the “Public Warrants” and,
together with the Private Placement Warrants, the “Warrants”). Each whole Warrant entitles the holder thereof
to purchase one Class A ordinary share of the Company, par value $0.0001 per share (each, an “Ordinary Share”),
for $11.50 per share, subject to adjustment as described herein. Only whole Warrants are exercisable. A holder of Public Warrants will
not be able to exercise any fraction of a Warrant;

 

WHEREAS, the Company has filed with the Securities
and Exchange Commission (the “SEC”) the registration statement on Form S-1, No. 333-253586 (the “Registration
Statement”) and prospectus (the “Prospectus”), for the registration, under the Securities Act
of 1933, as amended (the “Securities Act”), of the Units, the Public Warrants and the Ordinary Shares included
in the Units;

 

WHEREAS, the Company desires the Warrant Agent
to act on behalf of the Company, and the Warrant Agent is willing to so act, in connection with the issuance, registration, transfer,
exchange, redemption and exercise of the Warrants;

 

WHEREAS, the Company desires to provide for the
form and provisions of the Warrants, the terms upon which they shall be issued and exercised, and the respective rights, limitation of
rights and immunities of the Company, the Warrant Agent and the holders of the Warrants; and

 

WHEREAS, all acts and things have been done and
performed which are necessary to make the Warrants, when executed on behalf of the Company and countersigned by or on behalf of the Warrant
Agent (if a physical certificate is issued), as provided herein, the valid, binding and legal obligations of the Company, and to authorize
the execution and delivery of this Agreement.

 

     

     

    

 

NOW, THEREFORE, in consideration of the mutual
agreements herein contained, the parties hereto agree as follows:

 

1. Appointment
of Warrant Agent. The Company hereby appoints the Warrant Agent to act as agent for the Company for the Warrants, and the Warrant
Agent hereby accepts such appointment and agrees to perform the same in accordance with the terms and conditions set forth in this Agreement.

 

2. Warrants.

 

2.1 Form
of Warrant. Each Warrant shall be issued in registered form only.

 

2.2 Effect
of Countersignature. If a physical certificate is issued, unless and until countersigned by the Warrant Agent pursuant to this Agreement,
a certificated Warrant shall be invalid and of no effect and may not be exercised by the holder thereof.

 

2.3 Registration.

 

2.3.1 Warrant
Register. The Warrant Agent shall maintain books (the “Warrant Register”), for the registration of original
issuance and the registration of transfer of the Warrants. Upon the initial issuance of the Warrants in book entry form, the Warrant Agent
shall issue and register the Warrants in the names of the respective holders thereof in such denominations and otherwise in accordance
with instructions delivered to the Warrant Agent by the Company. Ownership of beneficial interests in the Public Warrants shall be shown
on, and the transfer of such ownership shall be effected through, records maintained by institutions that have accounts with The Depository
Trust Company (the “Depositary”) (such institution, with respect to a Warrant in its account, a “Participant”).
If the Depositary subsequently ceases to make its book-entry settlement system available for the Public Warrants, the Company may instruct
the Warrant Agent regarding making other arrangements for book-entry settlement. In the event that the Public Warrants are not eligible
for, or it is no longer necessary to have the Public Warrants available in, book-entry form, the Warrant Agent shall provide written instructions
to the Depositary to deliver to the Warrant Agent for cancellation each book-entry Public Warrant, and the Company shall instruct the
Warrant Agent to deliver to the Depositary definitive certificates in physical form evidencing such Warrants which shall be in the form
annexed hereto as Exhibit A.

 

Physical certificates, if issued, shall be signed
by, or bear the facsimile signature of, the Chairman of the Board, Chief Executive Officer, Chief Financial Officer, Secretary or other
principal officer of the Company. In the event the person whose facsimile signature has been placed upon any Warrant shall have ceased
to serve in the capacity in which such person signed the Warrant before such Warrant is issued, it may be issued with the same effect
as if he or she had not ceased to be such at the date of issuance.

 

2.3.2 Registered
Holder. Prior to due presentment for registration of transfer of any Warrant, the Company and the Warrant Agent may deem and treat
the person in whose name such Warrant is registered in the Warrant Register (the “Registered Holder”) as the
absolute owner of such Warrant and of each Warrant represented thereby (notwithstanding any notation of ownership or other writing on
any physical certificate made by anyone other than the Company or the Warrant Agent), for the purpose of any exercise thereof, and for
all other purposes, and neither the Company nor the Warrant Agent shall be affected by any notice to the contrary.

 

2.4 Detachability
of Warrants. The Ordinary Shares and Public Warrants comprising the Units shall begin separate trading on the 52nd day following the
date of the Prospectus or, if such 52nd day is not on a day, other than a Saturday, Sunday or federal holiday, on which banks in New York
City are generally open for normal business (a “Business Day”), then on the immediately succeeding Business
Day following such date, or earlier (the “Detachment Date”) with the consent of Barclays Capital Inc. and Goldman
Sachs & Co. LLC but in no event shall the Ordinary Shares and the Public Warrants comprising the Units be separately traded until
(A) the Company has filed a current report on Form 8-K with the SEC containing an audited balance sheet reflecting the receipt by the
Company of the gross proceeds of the Offering, including the proceeds received by the Company from the exercise by the underwriters of
their right to purchase additional Units in the Offering (the “Over-allotment Option”), if the Over-allotment
Option is exercised or waived prior to the filing of the Form 8-K, and (B) the Company issues a press release and files with the SEC a
current report on Form 8-K announcing when such separate trading shall begin.

 

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2.5 No
Fractional Warrants Other Than as Part of Units. The Company shall not issue fractional Warrants other than as part of Units, each
of which is comprised of one Ordinary Share and one-fourth of one Public Warrant. If, upon the detachment of Public Warrants from Units
or otherwise, a holder of Warrants would be entitled to receive a fractional Warrant, the Company shall round down to the nearest whole
number the number of Warrants to be issued to such holder.

 

2.6 Private
Placement Warrants.

 

2.6.1 Private
Placement Warrants. The Private Placement Warrants shall be identical to the Public Warrants, except that so long as they are held
by TortoiseEcofin Borrower or any of its Permitted Transferees (as defined below), the Private Placement Warrants: (i) may be exercised
for cash or on a cashless basis, pursuant to subsection 3.3.1(c) hereof, (ii) may not be transferred, assigned or sold until thirty
(30) days after the completion by the Company of an initial Business Combination and (iii) shall not be redeemable by the Company for
cash pursuant to Section 6.1 hereof; provided, however, that in the case of (ii), the Private Placement Warrants and any
Ordinary Shares held by TortoiseEcofin Borrower or any of its Permitted Transferees and issued upon exercise of the Private Placement
Warrants may be transferred by the holders thereof:

 

(a) to
the Company’s officers or directors, any affiliates or family members of any of the Company’s officers or directors, any member(s)
of the Sponsor or their affiliates, any affiliates of the Sponsor, any member(s) of TortoiseEcofin Borrower or their affiliates or any
affiliates of TortoiseEcofin Borrower;

 

(b) in
the case of an individual, by gift to members of the individual’s immediate family or to a trust, the beneficiary of which is a
member of one of the individual’s immediate family, an affiliate of such person or to a charitable organization;

 

(c) in
the case of an individual, by virtue of laws of descent and distribution upon death of such person;

 

(d) in
the case of an individual, pursuant to a qualified domestic relations order;

 

(e) by
virtue of TortoiseEcofin Borrower’s operating agreement upon dissolution of TortoiseEcofin Borrower;

 

(f) by
private sales or transfers made in connection with the consummation of the Company’s initial Business Combination at prices no greater
than the price at which the Private Placement Warrants were originally purchased;

 

(g) in
the event of the Company’s liquidation prior to the completion of the Company’s initial Business Combination; or

 

(h) in
the event of the Company’s completion of a liquidation, merger, share exchange, restructuring or other similar transaction which
results in all of the Company’s shareholders having the right to exchange their Ordinary Shares for cash, securities or other property
subsequent to the completion of the Company’s initial Business Combination; provided, however, that, in the case of clauses
(a) through (f), these transferees (the “Permitted Transferees”) must enter into a written agreement with the
Company agreeing to be bound by the transfer restrictions in this Agreement.

 

3. Terms
and Exercise of Warrants.

 

3.1 Warrant
Price. Each whole Warrant shall, when countersigned by the Warrant Agent, entitle the Registered Holder thereof, subject to the provisions
of such Warrant and of this Agreement, to purchase from the Company the number of Ordinary Shares stated therein, at the price of $11.50
per share, subject to the adjustments provided in Section 4 hereof and in the last sentence of this Section 3.1. The term
“Warrant Price” as used in this Agreement shall mean the price per share at which Ordinary Shares may be purchased
at the time a Warrant is exercised. The Company in its sole discretion may lower the Warrant Price at any time prior to the Expiration
Date (as defined below) for a period of not less than twenty (20) Business Days, provided, that the Company shall provide at least
twenty (20) days prior written notice of such reduction to Registered Holders of the Warrants and, provided further that any such
reduction shall be identical among all of the Warrants.

 

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3.2 Duration
of Warrants. A Warrant may be exercised only during the period (the “Exercise Period”) commencing on the
date that is thirty (30) days after the first date on which the Company completes a merger, amalgamation, share exchange, asset acquisition,
share purchase, reorganization or similar business combination, involving the Company and one or more businesses or entities (a “Business
Combination”), and terminating at the earlier to occur of: (w) 5:00 p.m., New York City time on the date that is five (5)
years after the date on which the Company completes its initial Business Combination, (x) the liquidation of the Company, (y) other than
with respect to the Private Placement Warrants, 5:00 p.m., New York City time on the Redemption Date (as defined below) as provided in
Section 6.3 hereof and (z) the Alternative Redemption Date (as defined below) as provided in Section 6.2 hereof (the “Expiration
Date”); provided, however, that the exercise of any Warrant shall be subject to the satisfaction of any applicable
conditions, as set forth in subsection 3.3.2 below with respect to an effective registration statement. Except with respect to
the right to receive the Redemption Price (as defined below) or the Alternative Redemption Price (as defined below) (other than with respect
to the Private Placement Warrant) in the event of a redemption (as set forth in Section 6 hereof), each Warrant (other than a Private
Placement Warrant in the event of a redemption) not exercised on or before the Expiration Date shall become null and void, and all rights
thereunder and all rights in respect thereof under this Agreement shall cease at 5:00 p.m. New York City time on the Expiration Date.
The Company in its sole discretion may extend the duration of the Warrants by delaying the Expiration Date; provided, that the
Company shall provide at least twenty (20) days prior written notice of any such extension to Registered Holders of the Warrants and,
provided further that any such extension shall be identical in duration among all the Warrants.

 

3.3 Exercise
of Warrants.

 

3.3.1 Payment.
Subject to the provisions of the Warrant and this Agreement, a Warrant, when countersigned by the Warrant Agent, may be exercised by the
Registered Holder thereof by surrendering it, at the office of the Warrant Agent, or at the office of its successor as Warrant Agent,
in the Borough of Manhattan, City and State of New York, with the subscription form, as set forth in the Warrant, duly executed, and by
paying in full the Warrant Price for each full Ordinary Share as to which the Warrant is exercised and any and all applicable taxes due
in connection with the exercise of the Warrant, the exchange of the Warrant for the Ordinary Shares and the issuance of such Ordinary
Shares, as follows:

 

(a) in
lawful money of the United States, in good certified check or good bank draft payable to the Warrant Agent;

 

(b) in
the event of a redemption pursuant to Section 6 hereof in which the Company’s board of directors (the “Board”)
has elected to require all holders of the Warrants to exercise such Warrants on a “cashless basis,” by surrendering the Warrants
for that number of Ordinary Shares equal to the quotient obtained by dividing (x) the product of the number of Ordinary Shares underlying
the Warrants, multiplied by the difference between the Warrant Price and the “Fair Market Value,” as defined in this subsection
3.3.1(b) by (y) the Fair Market Value. Solely for purposes of this subsection 3.3.1(b) and Section 6.4, the “Fair
Market Value” shall mean the average reported last sale price of the Ordinary Shares for the ten (10) trading days ending on the
third trading day prior to the date on which the notice of redemption is sent to the holders of the Warrants, pursuant to Section 6
hereof;

 

(c) with
respect to any Private Placement Warrant, so long as such Private Placement Warrant is held by TortoiseEcofin Borrower or a Permitted
Transferee, by surrendering the Warrants for that number of Ordinary Shares equal to the quotient obtained by dividing (x) the product
of the number of Ordinary Shares underlying the Warrants, multiplied by the difference between the Warrant Price and the “Fair Market
Value,” as defined in this subsection 3.3.1(c), by (y) the Fair Market Value. Solely for purposes of this subsection 3.3.1(c),
the “Fair Market Value” shall mean the average reported last sale price of the Ordinary Shares for the ten (10) trading days
ending on the third trading day prior to the date on which notice of exercise of the Warrant is sent to the Warrant Agent; or

 

(d) as
provided in Section 7.4 hereof.

 

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3.3.2 Issuance
of Ordinary Shares on Exercise. As soon as practicable after the exercise of any Warrant and the clearance of the funds in payment
of the Warrant Price (if payment is pursuant to subsection 3.3.1(a)), the Company shall issue to the Registered Holder of such
Warrant a book-entry position or certificate, as applicable, for the number of full Ordinary Shares to which he, she or it is entitled,
registered in such name or names as may be directed by him, her or it on the register of members of the Company, and if such Warrant shall
not have been exercised in full, a new book-entry position or countersigned Warrant, as applicable, for the number of Ordinary Shares
as to which such Warrant shall not have been exercised. Notwithstanding the foregoing, the Company shall not be obligated to deliver any
Ordinary Shares pursuant to the exercise of a Warrant and shall have no obligation to settle such Warrant exercise unless a registration
statement under the Securities Act with respect to the Ordinary Shares underlying the Public Warrants is then effective and a prospectus
relating thereto is current, subject to the Company’s satisfying its obligations under Section 7.4. No Warrant shall be exercisable
and the Company shall not be obligated to issue Ordinary Shares upon exercise of a Warrant unless the Ordinary Shares issuable upon such
Warrant exercise has been registered, qualified or deemed to be exempt under the securities laws of the state of residence of the Registered
Holder of the Warrants. In the event that the conditions in the two immediately preceding sentences are not satisfied with respect to
a Warrant, the holder of such Warrant shall not be entitled to exercise such Warrant and such Warrant may have no value and expire worthless,
in which case the purchaser of a Unit containing such Public Warrants shall have paid the full purchase price for the Unit solely for
the Ordinary Shares underlying such Unit. In no event will the Company be required to net cash settle the Warrant exercise. The Company
may require holders of Public Warrants to settle the Warrant on a “cashless basis” pursuant to Section 7.4.
If, by reason of any exercise of warrants on a “cashless basis,” the holder of any Warrant would be entitled,
upon the exercise of such Warrant, to receive a fractional interest in an Ordinary Share, the Company shall round down to the nearest
whole number the number of Ordinary Shares to be issued to such holder.

 

3.3.3 Valid
Issuance. All Ordinary Shares issued upon the proper exercise of a Warrant in conformity with this Agreement shall be validly issued,
fully paid and non-assessable.

 

3.3.4 Date
of Issuance. Each person in whose name any book-entry position or certificate, as applicable, for Ordinary Shares is issued and who
is registered in the register of members of the Company shall for all purposes be deemed to have become the holder of record of such Ordinary
Shares on the date on which the Warrant, or book-entry position representing such Warrant, was surrendered and payment of the Warrant
Price was made, irrespective of the date of delivery of such certificate in the case of a certificated Warrant, except that, if the date
of such surrender and payment is a date when the register of members of the Company or book-entry system of the Warrant Agent are closed,
such person shall be deemed to have become the holder of such Ordinary Shares at the close of business on the next succeeding date on
which the share transfer books or book-entry system are open.

 

3.3.5 Maximum
Percentage. A holder of a Warrant may notify the Company in writing in the event it elects to be subject to the provisions contained
in this subsection 3.3.5; however, no holder of a Warrant shall be subject to this subsection 3.3.5 unless he, she or it
makes such election. If the election is made by a holder, the Warrant Agent shall not effect the exercise of the holder’s Warrant,
and such holder shall not have the right to exercise such Warrant, to the extent that after giving effect to such exercise, such person
(together with such person’s affiliates), to the Warrant Agent’s actual knowledge, would beneficially own in excess of 9.8%
or such other amount as the holder may specify (the “Maximum Percentage”) of the Ordinary Shares outstanding
immediately after giving effect to such exercise. For purposes of the foregoing sentence, the aggregate number of Ordinary Shares beneficially
owned by such person and its affiliates shall include the number of Ordinary Shares issuable upon exercise of the Warrant with respect
to which the determination of such sentence is being made, but shall exclude Ordinary Shares that would be issuable upon (x) exercise
of the remaining, unexercised portion of the Warrant beneficially owned by such person and its affiliates and (y) exercise or conversion
of the unexercised or unconverted portion of any other securities of the Company beneficially owned by such person and its affiliates
(including, without limitation, any convertible notes or convertible preferred shares or warrants) subject to a limitation on conversion
or exercise analogous to the limitation contained herein. Except as set forth in the preceding sentence, for purposes of this paragraph,
beneficial ownership shall be calculated in accordance with Section 13(d) of the Securities Exchange Act of 1934, as amended (the “Exchange
Act”). For purposes of the Warrant, in determining the number of outstanding Ordinary Shares, the holder may rely on the
number of outstanding Ordinary Shares as reflected in (1) the Company’s most recent annual report on Form 10-K, quarterly report
on Form 10-Q, current report on Form 8-K or other public filing with the SEC as the case may be, (2) a more recent public announcement
by the Company or (3) any other notice by the Company or the Transfer Agent setting forth the number of Ordinary Shares outstanding. For
any reason at any time, upon the written request of the holder of the Warrant, the Company shall, within two (2) Business Days, confirm
orally and in writing to such holder the number of Ordinary Shares then outstanding. In any case, the number of outstanding Ordinary Shares
shall be determined after giving effect to the conversion or exercise of equity securities of the Company by the holder and its affiliates
since the date as of which such number of outstanding Ordinary Shares was reported. By written notice to the Company, the holder of a
Warrant may from time to time increase or decrease the Maximum Percentage applicable to such holder to any other percentage specified
in such notice; provided, however, that any such increase shall not be effective until the sixty-first (61st) day after such notice
is delivered to the Company.

 

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4. Adjustments.

 

4.1 Share
Dividends.

 

4.1.1 Sub-Divisions.
If after the date hereof, and subject to the provisions of Section 4.6 below, the number of outstanding Ordinary Shares is increased
by a share dividend payable in Ordinary Shares, or by a sub-division of Ordinary Shares or other similar event, then, on the effective
date of such share dividend, sub-division or similar event, the number of Ordinary Shares issuable on exercise of each Warrant shall be
increased in proportion to such increase in the outstanding Ordinary Shares. A rights offering to holders of the Ordinary Shares entitling
holders to purchase Ordinary Shares at a price less than the “Fair Market Value” (as defined below) shall be deemed a share
dividend of a number of Ordinary Shares equal to the product of (i) the number of Ordinary Shares actually sold in such rights offering
(or issuable under any other equity securities sold in such rights offering that are convertible into or exercisable for the Ordinary
Shares) multiplied by (ii) one (1) minus the quotient of (x) the price per Ordinary Share paid in such rights offering divided by (y)
the Fair Market Value. For purposes of this subsection 4.1.1, (i) if the rights offering is for securities convertible into or
exercisable for Ordinary Shares, in determining the price payable for Ordinary Shares, there shall be taken into account any consideration
received for such rights, as well as any additional amount payable upon exercise or conversion and (ii) “Fair Market Value”
means the volume weighted average price of the Ordinary Shares as reported during the ten (10) trading day period ending on the trading
day prior to the first date on which the Ordinary Shares trade on the applicable exchange or in the applicable market, regular way, without
the right to receive such rights.

 

4.1.2 Extraordinary
Dividends. If the Company, at any time while the Warrants are outstanding and unexpired, shall pay a dividend or make a distribution
in cash, securities or other assets to the holders of the Ordinary Shares on account of such Ordinary Shares (or other shares of the Company
into which the Warrants are convertible), other than (a) as described in subsection 4.1.1 above, (b) Ordinary Cash Dividends (as
defined below), (c) to satisfy the redemption rights of the holders of the Ordinary Shares in connection with a proposed initial Business
Combination, (d) to satisfy the redemption rights of the holders of Ordinary Shares in connection with a shareholder vote to approve an
amendment to the Company’s amended and restated memorandum and articles of association (the “Memorandum and Articles”)
that would affect the substance or timing of the Company’s obligation to redeem 100% of the Ordinary Shares if the Company does
not complete the Company’s initial Business Combination within the time period set forth in the Company’s Memorandum and Articles
or (e) in connection with the redemption of the Ordinary Shares upon the Company’s
failure to complete the Company’s initial Business Combination (any such non-excluded event being referred to herein as an
“Extraordinary Dividend”), then the Warrant Price shall be decreased, effective immediately after the effective
date of such Extraordinary Dividend, by the amount of cash and/or the fair market value (as determined by the Board, in good faith) of
any securities or other assets paid on each Ordinary Share in respect of such Extraordinary Dividend. For purposes of this subsection
4.1.2, “Ordinary Cash Dividends” means any cash dividend or cash distribution which, when combined on a
per share basis, with the per share amounts of all other cash dividends and cash distributions paid on the Ordinary Shares during the
365-day period ending on the date of declaration of such dividend or distribution (as adjusted to appropriately reflect any of the events
referred to in other subsections of this Section 4 and excluding cash dividends or cash distributions that resulted in an adjustment
to the Warrant Price or to the number of Ordinary Shares issuable on exercise of each Warrant) does not exceed $0.50 (being 5% of the
offering price of the Units in the Offering).

 

4.2 Aggregation
of Shares. If after the date hereof, and subject to the provisions of Section 4.6 hereof, the number of outstanding Ordinary
Shares is decreased by a consolidation, combination, reverse share sub-division or reclassification of Ordinary Shares or other similar
event, then, on the effective date of such consolidation, combination, reverse share sub-division, reclassification or similar event,
the number of Ordinary Shares issuable on exercise of each Warrant shall be decreased in proportion to such decrease in outstanding Ordinary
Shares.

 

4.3 Adjustments
in Exercise Price. Whenever the number of Ordinary Shares purchasable upon the exercise of the Warrants is adjusted, as provided in
subsection 4.1.1 or Section 4.2 above, the Warrant Price shall be adjusted (to the nearest cent) by multiplying such Warrant
Price immediately prior to such adjustment by a fraction (x) the numerator of which shall be the number of Ordinary Shares purchasable
upon the exercise of the Warrants immediately prior to such adjustment, and (y) the denominator of which shall be the number of Ordinary
Shares so purchasable immediately thereafter. If, in connection with the closing of the initial Business Combination, the Company issues
additional Ordinary Shares or securities of the Company which are convertible into, or exchangeable or exercisable for, equity securities
of the Company, including any securities issued by the Company which are pledged to secure any obligation of any holder to purchase equity
securities of the Company, at an issue price or effective issue price of less than $9.20 per Ordinary Share, with such issue price or
effective issue price to be determined in good faith by the Board (and in the case of any such issuance to the Sponsor or its affiliates,
without taking into account any Ordinary Shares of the Company issued prior to the Offering and held by the Sponsor or such affiliates,
as applicable, prior to such issuance) (the “Newly Issued Price”), the Warrant Price shall be adjusted (to the
nearest cent) to be equal to 115% of the Newly Issued Price.

 

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4.4 Replacement
of Securities upon Reorganization, etc. In case of any reclassification or reorganization of the outstanding Ordinary Shares (other
than a change under subsections 4.1.1 or 4.1.2 or Section 4.2 hereof or that solely affects the par value of such
Ordinary Shares ), or in the case of any merger or consolidation of the Company with or into another entity (other than a consolidation
or merger in which the Company is the continuing entity and that does not result in any reclassification or reorganization of the outstanding
Ordinary Shares), or in the case of any sale or conveyance to another corporation or entity of the assets or other property of the Company
as an entirety or substantially as an entirety in connection with which the Company is dissolved, the holders of the Warrants shall thereafter
have the right to purchase and receive, upon the basis and upon the terms and conditions specified in the Warrants and in lieu of the
Ordinary Shares of the Company immediately theretofore purchasable and receivable upon the exercise of the rights represented thereby,
the kind and amount of shares or other securities or property (including cash) receivable upon such reclassification, reorganization,
merger or consolidation, or upon a dissolution following any such sale or transfer, that the holder of the Warrants would have received
if such holder had exercised his, her or its Warrant(s) immediately prior to such event (the “Alternative Issuance”);
provided, however, that (i) if the holders of the Ordinary Shares were entitled to exercise a right of election as to the kind
or amount of securities, cash or other assets receivable upon such consolidation or merger, then the kind and amount of securities, cash
or other assets constituting the Alternative Issuance for which each Warrant shall become exercisable shall be deemed to be the weighted
average of the kind and amount received per share by the holders of the Ordinary Shares in such consolidation or merger that affirmatively
make such election, and (ii) if a tender, exchange or redemption offer shall have been made to and accepted by the holders of the Ordinary
Shares (other than a tender, exchange or redemption offer made by the Company in connection with redemption rights held by shareholders
of the Company as provided for in the Company’s Memorandum and Articles or as a result of the repurchase of Ordinary Shares by the
Company if a proposed initial Business Combination is presented to the shareholders of the Company for approval) under circumstances in
which, upon completion of such tender or exchange offer, the maker thereof, together with members of any group (within the meaning of
Rule 13d-5(b)(1) under the Exchange Act (or any successor rule)) of which such maker is a part, and together with any affiliate or associate
of such maker (within the meaning of Rule 12b-2 under the Exchange Act (or any successor rule)) and any members of any such group of which
any such affiliate or associate is a part, own beneficially (within the meaning of Rule 13d-3 under the Exchange Act (or any successor
rule)) more than 50% of the outstanding Ordinary Shares, the holder of a Warrant shall be entitled to receive as the Alternative Issuance,
the highest amount of cash, securities or other property to which such holder would actually have been entitled as a shareholder if such
Warrant holder had exercised the Warrant prior to the expiration of such tender or exchange offer, accepted such offer and all of the
Ordinary Shares held by such holder had been purchased pursuant to such tender or exchange offer, subject to adjustments (from and after
the consummation of such tender or exchange offer) as nearly equivalent as possible to the adjustments provided for in this Section
4; provided, further, that if less than 70% of the consideration receivable by the holders of the Ordinary Shares in the applicable
event is payable in the form of Ordinary Shares in the successor entity that is listed for trading on a national securities exchange or
is quoted in an established over-the-counter market, or is to be so listed for trading or quoted immediately following such event, and
if the Registered Holder properly exercises the Warrant within thirty (30) days following the public disclosure of the consummation of
such applicable event by the Company pursuant to a Current Report on Form 8-K filed with the SEC, the Warrant Price shall be reduced by
an amount (in dollars) equal to the difference of (i) the Warrant Price in effect prior to such reduction minus (ii) (A) the Per Share
Consideration (as defined below) (but in no event less than zero) minus (B) the Black-Scholes Warrant Value (as defined below). The “Black-Scholes
Warrant Value” means the value of a Warrant immediately prior to the consummation of the applicable event based on the Black-Scholes
Warrant Model for a Capped American Call on Bloomberg Financial Markets (“Bloomberg”). For purposes of calculating
such amount, (1) Section 6 of this Agreement shall be taken into account, (2) the price of each Ordinary Share shall be the volume
weighted average price of the Ordinary Shares as reported during the ten (10) trading day period ending on the trading day prior to the
effective date of the applicable event, (3) the assumed volatility shall be the 90 day volatility obtained from the HVT function on Bloomberg
determined as of the trading day immediately prior to the day of the announcement of the applicable event and (4) the assumed risk-free
interest rate shall correspond to the U.S. Treasury rate for a period equal to the remaining term of the Warrant. “Per Share
Consideration” means (i) if the consideration paid to holders of the Ordinary Shares consists exclusively of cash, the amount
of such cash per Ordinary Share, and (ii) in all other cases, the volume weighted average price of the Ordinary Shares as reported during
the ten (10) trading day period ending on the trading day prior to the effective date of the applicable event. If any reclassification
or reorganization also results in a change in Ordinary Shares covered by subsection 4.1.1, then such adjustment shall be made pursuant
to subsection 4.1.1 or Sections 4.2, 4.3 and this Section 4.4. The provisions of this Section 4.4 shall
similarly apply to successive reclassifications, reorganizations, mergers or consolidations, sales or other transfers. In no event will
the Warrant Price be reduced to less than the par value per share issuable upon exercise of the Warrant.

 

4.5 Notices
of Changes in Warrant. Upon every adjustment of the Warrant Price or the number of Ordinary Shares issuable upon exercise of a Warrant,
the Company shall give written notice thereof to the Warrant Agent, which notice shall state the Warrant Price resulting from such adjustment
and the increase or decrease, if any, in the number of Ordinary Shares purchasable at such price upon the exercise of a Warrant, setting
forth in reasonable detail the method of calculation and the facts upon which such calculation is based. Upon the occurrence of any event
specified in Sections 4.1, 4.2, 4.3 or 4.4, the Company shall give written notice of the occurrence of such
event to each holder of a Warrant, at the last address set forth for such holder in the Warrant Register, of the record date or the effective
date of the event. Failure to give such notice, or any defect therein, shall not affect the legality or validity of such event.

 

    7

     

    

 

4.6 No
Fractional Shares. Notwithstanding any provision contained in this Agreement to the contrary, the Company shall not issue fractional
Ordinary Shares upon the exercise of Warrants. If, by reason of any adjustment made pursuant to this Section 4, the holder of any
Warrant would be entitled, upon the exercise of such Warrant, to receive a fractional interest in a share, the Company shall, upon such
exercise, round down to the nearest whole number of Ordinary Shares to be issued to such holder.

 

4.7 Form
of Warrant. The form of Warrant need not be changed because of any adjustment pursuant to this Section 4, and Warrants issued
after such adjustment may state the same Warrant Price and the same number of Ordinary Shares as is stated in the Warrants initially issued
pursuant to this Agreement; provided, however, that the Company may at any time in its sole discretion make any change in the form
of Warrant that the Company may deem appropriate and that does not affect the substance thereof, and any Warrant thereafter issued or
countersigned, whether in exchange or substitution for an outstanding Warrant or otherwise, may be in the form as so changed.

 

4.8 Other
Events. In case any event shall occur affecting the Company as to which none of the provisions of the preceding subsections of this
Section 4 are strictly applicable, but which would require an adjustment to the terms of the Warrants in order to (i) avoid an
adverse impact on the Warrants and (ii) effectuate the intent and purpose of this Section 4, then, in each such case, the Company
shall appoint a firm of independent public accountants or investment banking or other appraisal firm of recognized national standing,
which shall give its opinion as to whether or not any adjustment to the rights represented by the Warrants is necessary to effectuate
the intent and purpose of this Section 4 and, if they determine that an adjustment is necessary, the terms of such adjustment.
The Company shall adjust the terms of the Warrants in a manner that is consistent with any adjustment recommended in such opinion.

 

5. Transfer
and Exchange of Warrants.

 

5.1 Registration
of Transfer. The Warrant Agent shall register the transfer, from time to time, of any outstanding Warrant upon the Warrant Register,
upon surrender of such Warrant for transfer, properly endorsed with signatures properly guaranteed and accompanied by appropriate instructions
for transfer. Upon any such transfer, a new Warrant representing an equal aggregate number of Warrants shall be issued and the old Warrant
shall be cancelled by the Warrant Agent. In the case of certificated Warrants, the Warrants so cancelled shall be delivered by the Warrant
Agent to the Company from time to time upon request.

 

5.2 Procedure
for Surrender of Warrants. Warrants may be surrendered to the Warrant Agent, together with a written request for exchange or transfer,
and thereupon the Warrant Agent shall issue in exchange therefor one or more new Warrants as requested by the Registered Holder of the
Warrants so surrendered, representing an equal aggregate number of Warrants; provided, however, that in the event that a Warrant
surrendered for transfer bears a restrictive legend (as in the case of the Private Placement Warrants), the Warrant Agent shall not cancel
such Warrant and issue new Warrants in exchange thereof until the Warrant Agent has received an opinion of counsel for the Company stating
that such transfer may be made and indicating whether the new Warrants must also bear a restrictive legend.

 

5.3 Transfers
of Fractions of Warrants. The Warrant Agent shall not be required to effect any registration of transfer or exchange of Warrants which
would require the issuance of a warrant certificate or book-entry position for a fraction of a warrant, except as part of the Units.

 

5.4 Service
Charges. No service charge shall be made for any exchange or registration of transfer of Warrants.

 

5.5 Warrant
Execution and Countersignature. The Warrant Agent is hereby authorized to countersign and to deliver, in accordance with the terms
of this Agreement, the Warrants required to be issued pursuant to the provisions of this Section 5, and the Company, whenever required
by the Warrant Agent, shall supply the Warrant Agent with Warrants duly executed on behalf of the Company for such purpose.

 

5.6 Transfer
of Warrants. Prior to the Detachment Date, the Public Warrants may be transferred or exchanged only together with the Unit in which
such Warrant is included, and only for the purpose of effecting, or in conjunction with, a transfer or exchange of such Unit. Furthermore,
each transfer of a Unit on the register relating to such Units shall operate also to transfer the Warrants included in such Unit. Notwithstanding
the foregoing, the provisions of this Section 5.6 shall have no effect on any transfer of Warrants on and after the Detachment
Date.

 

    8

     

    

 

6. Redemption.

 

6.1 Redemption
of Warrants for Cash. Subject to Section 6.5 hereof, not less than all of the outstanding Warrants may be redeemed, at the
option of the Company, at any time during the Exercise Period, at the office of the Warrant Agent, upon notice to the Registered Holders
of the Warrants, as described in Section 6.3 below, at the price of $0.01 per Warrant (the “Redemption Price”),
provided that the last sales price of the Ordinary Shares reported has been at least $18.00 per share (subject to adjustment in
compliance with Section 4 hereof), on each of twenty (20) trading days within the thirty (30) trading day period ending on the
third trading day prior to the date on which notice of the redemption is given and provided that there is an effective registration
statement covering the Ordinary Shares issuable upon exercise of the Warrants, and a current prospectus relating thereto, available throughout
the 30-day Redemption Period (as defined in Section 6.3 below) or the Company has elected to require the exercise of the Warrants
on a “cashless basis” pursuant to subsection 3.3.1.

 

6.2 Redemption
of Warrants for Ordinary Shares. Subject to Sections 6.5 and 6.6 hereof, not less than all of the outstanding Warrants
may be redeemed, at the option of the Company, commencing ninety (90) days after the commencement of the Exercise Period and at any time
prior to the expiration thereof, at the office of the Warrant Agent, upon notice to the Registered Holders of the Warrants, as described
in Section 6.3 below, at a price equal to a number of Ordinary Shares determined by reference to the table below, based on the
redemption date (calculated for purposes of the table as the period to expiration of the Warrants) and the “Fair Market Value”
(as such term is defined in Section 3.3.1(b) (the “Alternative Redemption Price”), provided that the
last sales price of the Ordinary Shares reported has been at least $10.00 per share (subject to adjustment in compliance with Section
4 hereof), on the trading day prior to the date on which notice of the redemption is given and provided that there is an effective
registration statement covering the Ordinary Shares issuable upon exercise of the Warrants, and a current prospectus relating thereto,
available throughout the 30-day Redemption Period (as defined in Section 6.3 below) or the Company has elected to require the exercise
of warrants on a “cashless basis” pursuant to subsection 3.3.1.

 

	Redemption Date	 	Fair Market Value of Class A Ordinary Shares	 
	(period to expiration of warrants)	 	 	≤$10.00	 	 	$	11.00	 	 	$	12.00	 	 	$	13.00	 	 	$	14.00	 	 	$	15.00	 	 	$	16.00	 	 	$	17.00	 	 	 	≥$18.00	 
	60 months	 	 	0.261	 	 	 	0.281	 	 	 	0.297	 	 	 	0.311	 	 	 	0.324	 	 	 	0.337	 	 	 	0.348	 	 	 	0.358	 	 	 	0.361	 
	57 months	 	 	0.257	 	 	 	0.277	 	 	 	0.294	 	 	 	0.310	 	 	 	0.324	 	 	 	0.337	 	 	 	0.348	 	 	 	0.358	 	 	 	0.361	 
	54 months	 	 	0.252	 	 	 	0.272	 	 	 	0.291	 	 	 	0.307	 	 	 	0.322	 	 	 	0.335	 	 	 	0.347	 	 	 	0.357	 	 	 	0.361	 
	51 months	 	 	0.246	 	 	 	0.268	 	 	 	0.287	 	 	 	0.304	 	 	 	0.320	 	 	 	0.333	 	 	 	0.346	 	 	 	0.357	 	 	 	0.361	 
	48 months	 	 	0.241	 	 	 	0.263	 	 	 	0.283	 	 	 	0.301	 	 	 	0.317	 	 	 	0.332	 	 	 	0.344	 	 	 	0.356	 	 	 	0.361	 
	45 months	 	 	0.235	 	 	 	0.258	 	 	 	0.279	 	 	 	0.298	 	 	 	0.315	 	 	 	0.330	 	 	 	0.343	 	 	 	0.356	 	 	 	0.361	 
	42 months	 	 	0.228	 	 	 	0.252	 	 	 	0.274	 	 	 	0.294	 	 	 	0.312	 	 	 	0.328	 	 	 	0.342	 	 	 	0.355	 	 	 	0.361	 
	39 months	 	 	0.221	 	 	 	0.246	 	 	 	0.269	 	 	 	0.290	 	 	 	0.309	 	 	 	0.325	 	 	 	0.340	 	 	 	0.354	 	 	 	0.361	 
	36 months	 	 	0.213	 	 	 	0.239	 	 	 	0.263	 	 	 	0.285	 	 	 	0.305	 	 	 	0.323	 	 	 	0.339	 	 	 	0.353	 	 	 	0.361	 
	33 months	 	 	0.205	 	 	 	0.232	 	 	 	0.257	 	 	 	0.280	 	 	 	0.301	 	 	 	0.320	 	 	 	0.337	 	 	 	0.352	 	 	 	0.361	 
	30 months	 	 	0.196	 	 	 	0.224	 	 	 	0.250	 	 	 	0.274	 	 	 	0.297	 	 	 	0.316	 	 	 	0.335	 	 	 	0.351	 	 	 	0.361	 
	27 months	 	 	0.185	 	 	 	0.214	 	 	 	0.242	 	 	 	0.268	 	 	 	0.291	 	 	 	0.313	 	 	 	0.332	 	 	 	0.350	 	 	 	0.361	 
	24 months	 	 	0.173	 	 	 	0.204	 	 	 	0.233	 	 	 	0.260	 	 	 	0.285	 	 	 	0.308	 	 	 	0.329	 	 	 	0.348	 	 	 	0.361	 
	21 months	 	 	0.161	 	 	 	0.193	 	 	 	0.223	 	 	 	0.252	 	 	 	0.279	 	 	 	0.304	 	 	 	0.326	 	 	 	0.347	 	 	 	0.361	 
	18 months	 	 	0.146	 	 	 	0.179	 	 	 	0.211	 	 	 	0.242	 	 	 	0.271	 	 	 	0.298	 	 	 	0.322	 	 	 	0.345	 	 	 	0.361	 
	15 months	 	 	0.130	 	 	 	0.164	 	 	 	0.197	 	 	 	0.230	 	 	 	0.262	 	 	 	0.291	 	 	 	0.317	 	 	 	0.342	 	 	 	0.361	 
	12 months	 	 	0.111	 	 	 	0.146	 	 	 	0.181	 	 	 	0.216	 	 	 	0.250	 	 	 	0.282	 	 	 	0.312	 	 	 	0.339	 	 	 	0.361	 
	9 months	 	 	0.090	 	 	 	0.125	 	 	 	0.162	 	 	 	0.199	 	 	 	0.237	 	 	 	0.272	 	 	 	0.305	 	 	 	0.336	 	 	 	0.361	 
	6 months	 	 	0.065	 	 	 	0.099	 	 	 	0.137	 	 	 	0.178	 	 	 	0.219	 	 	 	0.259	 	 	 	0.296	 	 	 	0.331	 	 	 	0.361	 
	3 months	 	 	0.034	 	 	 	0.065	 	 	 	0.104	 	 	 	0.150	 	 	 	0.197	 	 	 	0.243	 	 	 	0.286	 	 	 	0.326	 	 	 	0.361	 
	0 months	 	 	—	 	 	 	—	 	 	 	0.042	 	 	 	0.115	 	 	 	0.179	 	 	 	0.233	 	 	 	0.281	 	 	 	0.323	 	 	 	0.361	 

 

If the exact Fair Market Value and Redemption Date
(as defined below) are between two values in the table above or the Redemption Date is between two redemption dates in the table above,
the number of Ordinary Shares to be issued for each Warrant redeemed will be determined by a straight-line interpolation between the number
of shares set forth for the higher and lower Fair Market Values and the earlier and later redemption dates, as applicable, based on a
365-day year.

 

    9

     

    

 

The share prices set forth in the column headings
of the table above shall be adjusted as of any date on which the number of shares issuable upon exercise of a Warrant or the Exercise
Price is adjusted pursuant to Section 4. The adjusted share prices in the column headings shall equal the share prices immediately
prior to such adjustment, multiplied by a fraction, the numerator of which is the number of shares deliverable upon exercise of a Warrant
immediately prior to such adjustment and the denominator of which is the number of shares deliverable upon exercise of a Warrant as so
adjusted. The number of shares in the table above shall be adjusted in the same manner and at the same time as the number of shares issuable
upon exercise of a Warrant.

 

6.3 Date
Fixed for, and Notice of, Redemption. In the event that the Company elects to redeem all of the Warrants pursuant to Section 6.1,
the Company shall fix a date for the redemption (the “Redemption Date”). In the event that the Company elects
to redeem all of the Warrants pursuant to Section 6.2, the Company shall fix a date for redemption (the “Alternative
Redemption Date”). Notice of redemption shall be mailed by first class mail, postage prepaid, by the Company not less than
thirty (30) days prior to the Redemption Date (the “30-day Redemption Period”) to the Registered Holders of
the Warrants to be redeemed at their last addresses as they shall appear on the registration books. Any notice mailed in the manner herein
provided shall be conclusively presumed to have been duly given whether or not the Registered Holder received such notice.

 

6.4 Exercise
After Notice of Redemption. The Warrants may be exercised, for cash (or on a “cashless basis” in accordance with subsection
3.3.1(b) of this Agreement) at any time after notice of redemption shall have been given by the Company pursuant to Section 6.3
hereof and prior to the Redemption Date. In the event that the Company determines to require all holders of Warrants to exercise their
Warrants on a “cashless basis” pursuant to subsection 3.3.1, the notice of redemption shall contain the information
necessary to calculate the number of Ordinary Shares to be received upon exercise of the Warrants, including the “Fair Market Value”
(as such term is defined in subsection 3.3.1(b) hereof) in such case. On and after the Redemption Date, the record holder of the
Warrants shall have no further rights except to receive, upon surrender of the Warrants, the Redemption Price or the Alternative Redemption
Price, as applicable.

 

6.5 Effect
on Private Placement Warrants.

 

6.5.1 The
Company agrees that the redemption rights provided in Section 6.1 shall not apply to the Private Placement Warrants if at the time
of the redemption such Private Placement Warrants continue to be held by TortoiseEcofin Borrower or its Permitted Transferees. However,
once such Private Placement Warrants are transferred (other than to Permitted Transferees under Section 2.6), the Company may redeem
the Private Placement Warrants, provided that the criteria for redemption are met, including the opportunity of the holder of such
Private Placement Warrants to exercise the Private Placement Warrants prior to redemption pursuant to Section 6.4. Private Placement
Warrants that are transferred to persons other than Permitted Transferees shall upon such transfer cease to be Private Placement Warrants,
and shall become Public Warrants under this Agreement.

 

6.5.2 The
Company agrees that the redemption rights provided in Section 6.2 shall apply to the Private Placement Warrants pari passu with
the Public Warrants.

 

6.6 Warrants
held by the Company’s Officers or Directors. The Company agrees that if Warrants are held by any of the Company’s officers
or directors, the Warrants held by such officers and directors will be subject to the redemption rights provided in Section 6.1
(for Public Warrants only) and Section 6.2 to the extent provided for herein, except that such officers and directors shall receive
only “Fair Market Value” (“Fair Market Value” in this Section 6.6 shall mean the last sale price of the
Public Warrants on the Alternative Redemption Date) for such Warrants so redeemed.

 

7. Other
Provisions Relating to Rights of Holders of Warrants.

 

7.1 No
Rights as Shareholder. A Warrant does not entitle the Registered Holder thereof to any of the rights of a shareholder of the Company,
including, without limitation, the right to receive dividends, or other distributions, exercise any preemptive rights to vote or to consent
or to receive notice as shareholders in respect of the general meetings of the Company or the appointment of directors of the Company
or any other matter.

 

7.2 Lost,
Stolen, Mutilated or Destroyed Warrants. If any Warrant is lost, stolen, mutilated or destroyed, the Company and the Warrant Agent
may on such terms as to indemnity or otherwise as they may in their discretion impose (which shall, in the case of a mutilated Warrant,
include the surrender thereof), issue a new Warrant of like denomination, tenor and date as the Warrant so lost, stolen, mutilated or
destroyed. Any such new Warrant shall constitute a substitute contractual obligation of the Company, whether or not the allegedly lost,
stolen, mutilated or destroyed Warrant shall be at any time enforceable by anyone.

 

    10

     

    

 

7.3 Reservation
of Ordinary Shares. The Company shall at all times reserve and keep available a number of its authorized but unissued Ordinary Shares
that shall be sufficient to permit the exercise in full of all outstanding Warrants issued pursuant to this Agreement.

 

7.4 Registration
of Ordinary Shares; Cashless Exercise at Company’s Option.

 

7.4.1 Registration
of the Ordinary Shares. The Company agrees that as soon as practicable, but in no event later than twenty (20) Business Days after
the closing of its initial Business Combination, it shall use its commercially reasonable efforts to file with the SEC a post-effective
amendment to the registration statement for the Offering or a new a registration statement for the registration, under the Securities
Act, of the Ordinary Shares issuable upon exercise of the Warrants. The Company shall use its commercially reasonable efforts to cause
the same to become effective and to maintain the effectiveness of such registration statement, and a current prospectus relating thereto,
until the expiration or redemption of the Warrants in accordance with the provisions of this Agreement. If any such registration statement
has not been declared effective by the 60th Business Day following the closing of the Business Combination, holders of the Warrants shall
have the right, during the period beginning on the 61st Business Day after the closing of the Business Combination and ending upon such
registration statement being declared effective by the SEC, and during any other period when the Company shall fail to have maintained
an effective registration statement covering the Ordinary Shares issuable upon exercise of the Warrants, to exercise such Warrants on
a “cashless basis,” by exchanging the Warrants (in accordance with Section 3(a)(9) of the Securities Act (or any successor
statute) or another exemption) for that number of Ordinary Shares equal to the quotient obtained by dividing (x) the product of the number
of Ordinary Shares underlying the Warrants, multiplied by the difference between the Warrant Price and the “Fair Market Value”
(as defined below) by (y) the Fair Market Value. Solely for purposes of this subsection 7.4.1, “Fair Market Value”
shall mean the volume weighted average price of the Ordinary Shares as reported during the ten (10) trading day period ending on the trading
day prior to the date that notice of exercise is received by the Warrant Agent from the holder of such Warrants or its securities broker
or intermediary. The date that notice of cashless exercise is received by the Warrant Agent shall be conclusively determined by the Warrant
Agent. In connection with the “cashless exercise” of a Public Warrant, the Company shall, upon request, provide the Warrant
Agent with an opinion of counsel for the Company (which shall be an outside law firm with securities law experience) stating that (i)
the exercise of the Warrants on a cashless basis in accordance with this subsection 7.4.1 is not required to be registered under
the Securities Act and (ii) the Ordinary Shares issued upon such exercise shall be freely tradable under United States federal securities
laws by anyone who is not an affiliate (as such term is defined in Rule 144 under the Securities Act (or any successor rule)) of the Company
and, accordingly, shall not be required to bear a restrictive legend. Except as provided in subsection 7.4.2, for the avoidance
of any doubt, unless and until all of the Warrants have been exercised, the Company shall continue to be obligated to comply with its
registration obligations under the first three sentences of this subsection 7.4.1.

 

7.4.2 Cashless
Exercise at Company’s Option. If the Ordinary Shares are at the time of any exercise of a Warrant not listed on a national securities
exchange such that the Ordinary Shares satisfy the definition of a “covered security” under Section 18(b)(1) of the Securities
Act (or any successor statute), the Company may, at its option, (i) require holders of Public Warrants who exercise Public Warrants to
exercise such Public Warrants on a “cashless basis” in accordance with Section 3(a)(9) of the Securities Act (or any successor
statute) as described in subsection 7.4.1 and (ii) in the event the Company so elects, the Company shall (x) not be required to
file or maintain in effect a registration statement for the registration, under the Securities Act, of the Ordinary Shares issuable upon
exercise of the Warrants, notwithstanding anything in this Agreement to the contrary and (y) use its commercially reasonable efforts to
register or qualify the Ordinary Shares issuable upon exercise of the Public Warrant under the blue sky laws of the state of residence
of the exercising Public Warrant holder to the extent an exemption is not available.

 

8. Concerning
the Warrant Agent and Other Matters.

 

8.1 Payment
of Taxes. The Company shall from time to time promptly pay all taxes and charges that may be imposed upon the Company or the Warrant
Agent in respect of the issuance or delivery of Ordinary Shares upon the exercise of the Warrants, but the Company shall not be obligated
to pay any transfer taxes in respect of the Warrants or such Ordinary Shares.

 

    11

     

    

 

8.2 Resignation,
Consolidation or Merger of Warrant Agent.

 

8.2.1 Appointment
of Successor Warrant Agent. The Warrant Agent, or any successor to it hereafter appointed, may resign its duties and be discharged
from all further duties and liabilities hereunder after giving sixty (60) days’ notice in writing to the Company. If the office
of the Warrant Agent becomes vacant by resignation or incapacity to act or otherwise, the Company shall appoint in writing a successor
Warrant Agent in place of the Warrant Agent. If the Company shall fail to make such appointment within a period of thirty (30) days after
it has been notified in writing of such resignation or incapacity by the Warrant Agent or by the holder of a Warrant (who shall, with
such notice, submit his, her or its Warrant for inspection by the Company), then the holder of any Warrant may apply to the Supreme Court
of the State of New York for the County of New York for the appointment of a successor Warrant Agent at the Company’s cost. Any
successor Warrant Agent, whether appointed by the Company or by such court, shall be a corporation or other entity organized and existing
under the laws of the State of New York, in good standing and having its principal office in the Borough of Manhattan, City and State
of New York, and authorized under such laws to exercise corporate trust powers and subject to supervision or examination by federal or
state authority. After appointment, any successor Warrant Agent shall be vested with all the authority, powers, rights, immunities, duties
and obligations of its predecessor Warrant Agent with like effect as if originally named as Warrant Agent hereunder, without any further
act or deed; but if for any reason it becomes necessary or appropriate, the predecessor Warrant Agent shall execute and deliver, at the
expense of the Company, an instrument transferring to such successor Warrant Agent all the authority, powers and rights of such predecessor
Warrant Agent hereunder; and upon request of any successor Warrant Agent the Company shall make, execute, acknowledge and deliver any
and all instruments in writing for more fully and effectually vesting in and confirming to such successor Warrant Agent all such authority,
powers, rights, immunities, duties and obligations.

 

8.2.2 Notice
of Successor Warrant Agent. In the event a successor Warrant Agent shall be appointed, the Company shall give notice thereof to the
predecessor Warrant Agent and the Transfer Agent for the Ordinary Shares not later than the effective date of any such appointment.

 

8.2.3 Merger
or Consolidation of Warrant Agent. Any entity into which the Warrant Agent may be merged or with which it may be consolidated or any
corporation resulting from any merger or consolidation to which the Warrant Agent shall be a party shall be the successor Warrant Agent
under this Agreement without any further act.

 

8.3 Fees
and Expenses of Warrant Agent.

 

8.3.1 Remuneration.
The Company agrees to pay the Warrant Agent reasonable remuneration for its services as such Warrant Agent hereunder and shall, pursuant
to its obligations under this Agreement, reimburse the Warrant Agent upon demand for all expenditures that the Warrant Agent may reasonably
incur in the execution of its duties hereunder.

 

8.3.2 Further
Assurances. The Company agrees to perform, execute, acknowledge and deliver or cause to be performed, executed, acknowledged and delivered
all such further and other acts, instruments and assurances as may reasonably be required by the Warrant Agent for the carrying out or
performing of the provisions of this Agreement.

 

8.4 Liability
of Warrant Agent.

 

8.4.1 Reliance
on Company Statement. Whenever in the performance of its duties under this Agreement, the Warrant Agent shall deem it necessary or
desirable that any fact or matter be proved or established by the Company prior to taking or suffering any action hereunder, such fact
or matter (unless other evidence in respect thereof be herein specifically prescribed) may be deemed to be conclusively proved and established
by a statement signed by the Chief Executive Officer, Chief Financial Officer, Secretary or Chairman of the Board of the Company and delivered
to the Warrant Agent. The Warrant Agent may rely upon such statement for any action taken or suffered in good faith by it pursuant to
the provisions of this Agreement.

 

    12

     

    

 

8.4.2 Indemnity.
The Warrant Agent shall be liable hereunder only for its own gross negligence, willful misconduct or bad faith. The Company agrees to
indemnify the Warrant Agent and save it harmless against any and all liabilities, including judgments, costs and reasonable counsel fees,
for anything done or omitted by the Warrant Agent in the execution of this Agreement, except as a result of the Warrant Agent’s
gross negligence, willful misconduct or bad faith.

 

8.4.3 Exclusions.
The Warrant Agent shall have no responsibility with respect to the validity of this Agreement or with respect to the validity or execution
of any Warrant (except its countersignature thereof). The Warrant Agent shall not be responsible for any breach by the Company of any
covenant or condition contained in this Agreement or in any Warrant. The Warrant Agent shall not be responsible to make any adjustments
required under the provisions of Section 4 hereof or responsible for the manner, method or amount of any such adjustment or the
ascertaining of the existence of facts that would require any such adjustment; nor shall it by any act hereunder be deemed to make any
representation or warranty as to the authorization or reservation of any Ordinary Shares to be issued pursuant to this Agreement or any
Warrant or as to whether any Ordinary Shares shall, when issued, be valid and fully paid and non-assessable.

 

8.5 Acceptance
of Agency. The Warrant Agent hereby accepts the agency established by this Agreement and agrees to perform the same upon the terms
and conditions herein set forth and among other things, shall account promptly to the Company with respect to Warrants exercised and concurrently
account for, and pay to the Company, all monies received by the Warrant Agent for the purchase of Ordinary Shares through the exercise
of the Warrants.

 

8.6 Waiver.
The Warrant Agent has no right of set-off or any other right, title, interest or claim of any kind (“Claim”)
in, or to any distribution of, the Trust Account (as defined in that certain Investment Management Trust Agreement, dated as of the date
hereof, by and between the Company and the Warrant Agent as trustee thereunder) and hereby agrees not to seek recourse, reimbursement,
payment or satisfaction for any Claim against the Trust Account for any reason whatsoever. The Warrant Agent hereby waives any and all
Claims against the Trust Account and any and all rights to seek access to the Trust Account.

 

9. Miscellaneous
Provisions.

 

9.1 Successors.
All the covenants and provisions of this Agreement by or for the benefit of the Company or the Warrant Agent shall bind and inure to the
benefit of their respective successors and assigns.

 

9.2 Notices.
Any notice, statement or demand authorized by this Agreement to be given or made by the Warrant Agent or by the holder of any Warrant
to or on the Company shall be sufficiently given when so delivered if by hand or overnight delivery or if sent by certified mail or private
courier service within five (5) days after deposit of such notice, postage prepaid, addressed (until another address is filed in writing
by the Company with the Warrant Agent), as follows:

 

TortoiseEcofin Acquisition Corp. III

6363 College Boulevard

Overland Park, KS 66211

Attention: Steven Schnitzer

 

Any notice, statement or demand authorized by this
Agreement to be given or made by the holder of any Warrant or by the Company to or on the Warrant Agent shall be sufficiently given when
so delivered if by hand or overnight delivery or if sent by certified mail or private courier service within five (5) days after deposit
of such notice, postage prepaid, addressed (until another address is filed in writing by the Warrant Agent with the Company), as follows:

 

Continental Stock Transfer & Trust Company

1 State Street, 30th Floor

New York, NY 10004

Attention: Compliance Department

 

    13

     

    

 

9.3 Applicable
Law. The validity, interpretation, and performance of this Agreement and of the Warrants shall be governed in all respects by the
laws of the State of New York, without giving effect to conflicts of law principles that would result in the application of the substantive
laws of another jurisdiction. The Company hereby agrees that any action, proceeding or claim against it arising out of or relating in
any way to this Agreement, including under the Securities Act, shall be brought and enforced in the courts of the State of New York or
the United States District Court for the Southern District of New York, and irrevocably submits to such jurisdiction, which jurisdiction
shall be exclusive; provided, however, that the foregoing shall not apply to suits brought to enforce any liability or duty created by
the Exchange Act or any other claim for which the federal district courts of the United States of America are the sole and exclusive forum.
The Company hereby waives any objection to such exclusive jurisdiction and that such courts represent an inconvenient forum.

 

9.4 Persons
Having Rights under this Agreement. Nothing in this Agreement shall be construed to confer upon, or give to, any person, corporation
or other entity other than the parties hereto and the Registered Holders of the Warrants any right, remedy or claim under or by reason
of this Agreement or of any covenant, condition, stipulation, promise or agreement hereof. All covenants, conditions, stipulations, promises
and agreements contained in this Agreement shall be for the sole and exclusive benefit of the parties hereto and their successors and
assigns and of the Registered Holders of the Warrants.

 

9.5 Examination
of the Warrant Agreement. A copy of this Agreement shall be available at all reasonable times at the office of the Warrant Agent in
the Borough of Manhattan, City and State of New York, for inspection by the Registered Holder of any Warrant. The Warrant Agent may require
any such holder to submit such holder’s Warrant for inspection by the Warrant Agent.

 

9.6 Counterparts.
This Agreement may be executed in any number of original or facsimile counterparts and each of such counterparts shall for all purposes
be deemed to be an original, and all such counterparts shall together constitute but one and the same instrument.

 

9.7 Effect
of Headings. The section headings herein are for convenience only and are not part of this Agreement and shall not affect the interpretation
thereof.

 

9.8 Amendments.
This Agreement may be amended by the parties hereto without the consent of any Registered Holder for the purpose of (i) curing any ambiguity
or to correct any mistake, including to conform the provisions hereof to the description of the terms of the Warrants and this Agreement
set forth in this Prospectus or (ii) or adding or changing any other provisions with respect to matters or questions arising under this
Agreement as the parties may deem necessary or desirable and that the parties deem shall not adversely affect the rights of the Registered
Holders. All other modifications or amendments, including any modification or amendment to increase the Warrant Price or shorten the Exercise
Period and any amendment to the terms of only the Private Placement Warrants, shall require the vote or written consent of the Registered
Holders of 50% of the then outstanding Public Warrants and, solely with respect to any amendment to the terms of the Private Placement
Warrants or any provision of this Agreement with respect to the Private Placement Warrants, fifty percent (50%) of the then-outstanding
Private Placement Warrants. Notwithstanding the foregoing, the Company may lower the Warrant Price or extend the duration of the Exercise
Period pursuant to Sections 3.1 and 3.2, respectively, without the consent of the Registered Holders.

 

9.9 Severability.
This Agreement shall be deemed severable, and the invalidity or unenforceability of any term or provision hereof shall not affect the
validity or enforceability of this Agreement or of any other term or provision hereof. Furthermore, in lieu of any such invalid or unenforceable
term or provision, the parties hereto intend that there shall be added as a part of this Agreement a provision as similar in terms to
such invalid or unenforceable provision as may be possible and be valid and enforceable.

 

Exhibit A — Form of Warrant Certificate

Exhibit B Legend — Private Placement Warrants

 

[Signature Page
Follows]

 

    14

     

    

 

IN WITNESS WHEREOF, the parties hereto have caused
this Agreement to be duly executed as of the date first above written.

 

	 	TortoiseEcofin
    Acquisition Corp. III
	 	 	 
	 	By:	/s/ Vincent T. Cubbage
	 	Name:	Vincent T. Cubbage
	 	Title:	Chief Executive Officer
	 	 	 
	 	CONTINENTAL STOCK TRANSFER &
	 	TRUST COMPANY, as Warrant Agent
	 	 	 
	 	By:	/s/ Douglas Reed
	 	Name:	Douglas Reed
	 	Title:	Vice President

 

[Signature Page
to the Warrant Agreement]

 

     

     

    

 

Exhibit A

 

[Form of Warrant Certificate]

 

[FACE]

 

Number

 

Warrants

 

 

 

THIS WARRANT SHALL BE NULL AND VOID IF NOT
EXERCISED PRIOR TO

THE EXPIRATION OF THE EXERCISE PERIOD PROVIDED FOR

IN THE WARRANT AGREEMENT DESCRIBED BELOW

 

TortoiseEcofin
Acquisition Corp. III

Incorporated Under the Laws of the Cayman Islands

 

CUSIP [     ]

 

Warrant Certificate

 

This Warrant Certificate certifies that
    , or registered assigns, is the registered holder of     
warrant(s) evidenced hereby (the “Warrants” and each, a “Warrant”) to purchase Class
A ordinary shares, $0.0001 par value per share (“Ordinary Shares”), of TortoiseEcofin Acquisition Corp. III,
a Cayman Islands exempted company (the “Company”). Each Warrant entitles the holder, upon exercise during the
period set forth in the Warrant Agreement referred to below, to receive from the Company that number of fully paid and non-assessable
Ordinary Shares as set forth below, at the exercise price (the “Exercise Price”) as determined pursuant to the
Warrant Agreement, payable in lawful money of the United States of America (or through “cashless exercise” as
provided for in the Warrant Agreement) upon surrender of this Warrant Certificate and payment of the Exercise Price at the office or agency
of the Warrant Agent referred to below, subject to the conditions set forth herein and in the Warrant Agreement. Defined terms used in
this Warrant Certificate but not defined herein shall have the meanings given to them in the Warrant Agreement.

 

Each whole Warrant is initially exercisable for
one fully paid and non-assessable Ordinary Share. Fractional shares of ordinary shares shall not be issued upon exercise of any Warrant.
If, upon the exercise of Warrants, a holder would be entitled to receive a fractional interest in an Ordinary Share, the Company shall,
upon exercise, round down to the nearest whole number of Ordinary Shares to be issued to the warrantholder. The number of Ordinary Shares
issuable upon exercise of the Warrants is subject to adjustment upon the occurrence of certain events as set forth in the Warrant Agreement.

 

The initial Exercise Price is equal to $11.50 per
Ordinary Share. The Exercise Price is subject to adjustment upon the occurrence of certain events as set forth in the Warrant Agreement.

 

Subject to the conditions set forth in the Warrant
Agreement, the Warrants may be exercised only during the Exercise Period and to the extent not exercised by the end of such Exercise Period,
such Warrants shall become void. The Warrants may be redeemed, subject to certain conditions, as set forth in the Warrant Agreement.

 

Reference is hereby made to the further provisions
of this Warrant Certificate set forth on the reverse hereof and such further provisions shall for all purposes have the same effect as
though fully set forth at this place.

 

This Warrant Certificate shall not be valid unless
countersigned by the Warrant Agent, as such term is used in the Warrant Agreement.

 

This Warrant Certificate shall be governed by and
construed in accordance with the internal laws of the State of New York, without regard to conflicts of laws principles thereof.

 

	 	TORTOISEECOFIN ACQUISITION CORP. III
	 	 	 
	 	By:	                  
	 	Name:	 
	 	Title:	 
	 	 	 
	 	CONTINENTAL STOCK TRANSFER
	 	& TRUST COMPANY, as Warrant Agent
	 	 	 
	 	By:	
	 	Name:	 
	 	Title:	 

 

    A-1

     

    

 

[Form of Warrant Certificate]

 

[Reverse]

 

The Warrants evidenced by this Warrant Certificate
are part of a duly authorized issue of Warrants entitling the holder on exercise to receive Ordinary Shares and are issued or to be issued
pursuant to a Warrant Agreement dated as of     , 2021 (the “Warrant
Agreement”), duly executed and delivered by the Company to Continental Stock Transfer & Trust Company, a New York corporation,
as warrant agent (the “Warrant Agent”), which Warrant Agreement is hereby incorporated by reference in and made
a part of this instrument and is hereby referred to for a description of the rights, limitation of rights, obligations, duties and immunities
thereunder of the Warrant Agent, the Company and the holders (the words “holders” or “holder”
meaning the Registered Holders or Registered Holder, respectively) of the Warrants. A copy of the Warrant Agreement may be obtained by
the holder hereof upon written request to the Company. Defined terms used in this Warrant Certificate but not defined herein shall have
the meanings given to them in the Warrant Agreement.

 

Warrants may be exercised at any time during the
Exercise Period set forth in the Warrant Agreement. The holder of Warrants evidenced by this Warrant Certificate may exercise them by
surrendering this Warrant Certificate, with the form of election to purchase set forth hereon properly completed and executed, together
with payment of the Exercise Price as specified in the Warrant Agreement (or through “cashless exercise” as
provided for in the Warrant Agreement) at the principal corporate trust office of the Warrant Agent. In the event that upon any exercise
of Warrants evidenced hereby the number of Warrants exercised shall be less than the total number of Warrants evidenced hereby, there
shall be issued to the holder hereof or his, her or its assignee, a new Warrant Certificate evidencing the number of Warrants not exercised.

 

Notwithstanding anything else in this Warrant Certificate
or the Warrant Agreement, no Warrant may be exercised unless at the time of exercise (i) a registration statement covering the Ordinary
Shares to be issued upon exercise is effective under the Securities Act and (ii) a prospectus thereunder relating to the Ordinary Shares
is current, except through “cashless exercise” as provided for in the Warrant Agreement.

 

The Warrant Agreement provides that upon the occurrence
of certain events the number of Ordinary Shares issuable upon exercise of the Warrants set forth on the face hereof may, subject to certain
conditions, be adjusted. If, upon exercise of a Warrant, the holder thereof would be entitled to receive a fractional interest in an Ordinary
Share, the Company shall, upon exercise, round down to the nearest whole number of Ordinary Shares to be issued to the holder of the Warrant.

 

Warrant Certificates, when surrendered at the principal
corporate trust office of the Warrant Agent by the Registered Holder thereof in person or by legal representative or attorney duly authorized
in writing, may be exchanged, in the manner and subject to the limitations provided in the Warrant Agreement, but without payment of any
service charge, for another Warrant Certificate or Warrant Certificates of like tenor evidencing in the aggregate a like number of Warrants.

 

Upon due presentation for registration of transfer
of this Warrant Certificate at the office of the Warrant Agent a new Warrant Certificate or Warrant Certificates of like tenor and evidencing
in the aggregate a like number of Warrants shall be issued to the transferee(s) in exchange for this Warrant Certificate, subject to the
limitations provided in the Warrant Agreement, without charge except for any tax or other governmental charge imposed in connection therewith.

 

The Company and the Warrant Agent may deem and
treat the Registered Holder(s) hereof as the absolute owner(s) of this Warrant Certificate (notwithstanding any notation of ownership
or other writing hereon made by anyone), for the purpose of any exercise hereof, of any distribution to the holder(s) hereof, and for
all other purposes, and neither the Company nor the Warrant Agent shall be affected by any notice to the contrary. Neither the Warrants
nor this Warrant Certificate entitles any holder hereof to any rights of a shareholder of the Company.

 

    A-2

     

    

 

Election to Purchase

 

(To Be Executed Upon Exercise of Warrant)

 

The undersigned hereby irrevocably elects to exercise
the right, represented by this Warrant Certificate, to receive        Ordinary Shares
and herewith tenders payment for such Ordinary Shares to the order of TortoiseEcofin Acquisition Corp. III (the “Company”)
in the amount of $        in accordance with the terms hereof. The undersigned requests
that the register of members of the Company be updated to reflect the issuance of such Ordinary Shares and a certificate for such Ordinary
Shares be registered in the name of       , whose address is       
and that such Ordinary Shares be delivered to         whose address is         .
If said number of Ordinary Shares is less than all of the Ordinary Shares purchasable hereunder, the undersigned requests that a new Warrant
Certificate representing the remaining balance of such Ordinary Shares be registered in the name of         ,
whose address is          and that such Warrant Certificate be delivered to          ,
whose address is         .

 

In the event that the Warrant has been called
for redemption by the Company pursuant to Section 6 of the Warrant Agreement and the Company has required cashless exercise pursuant
to Section 6.3 of the Warrant Agreement, the number of Ordinary Shares that this Warrant is exercisable for shall be determined
in accordance with subsection 3.3.1(b) and Section 6.3 of the Warrant Agreement.

 

In the event that the Warrant is a Private Placement
Warrant that is to be exercised on a “cashless” basis pursuant to subsection 3.3.1(c) of the Warrant
Agreement, the number of Ordinary Shares that this Warrant is exercisable for shall be determined in accordance with subsection 3.3.1(c)
of the Warrant Agreement.

 

In the event that the Warrant is to be exercised
on a “cashless” basis pursuant to Section 7.4 of the Warrant Agreement, the number of Ordinary Shares
that this Warrant is exercisable for shall be determined in accordance with Section 7.4 of the Warrant Agreement.

 

In the event that the Warrant may be exercised,
to the extent allowed by the Warrant Agreement, through cashless exercise (i) the number of Ordinary Shares that this Warrant is exercisable
for would be determined in accordance with the relevant section of the Warrant Agreement which allows for such cashless exercise and (ii)
the holder hereof shall complete the following:

 

The undersigned hereby irrevocably elects to exercise
the right, represented by this Warrant Certificate, through the cashless exercise provisions of the Warrant Agreement, to receive              Ordinary
Shares. If said number of Ordinary Shares is less than all of the Ordinary Shares purchasable hereunder (after giving effect to the cashless
exercise), the undersigned requests that a new Warrant Certificate representing the remaining balance of such Ordinary Shares be registered
in the name of         , whose address is          
and that such Warrant Certificate be delivered to          , whose address is          .

 

[Signature Page Follows]

 

    A-3

     

    

 

Date:             , 20

 

	 	
	 	(Signature)
	 	 
	 	
	 	
	 	
	 	(Address)
	 	 
	 	
	 	(Tax Identification Number)

 

	Signature Guaranteed:	 
	 	 

 

THE SIGNATURE(S) SHOULD BE GUARANTEED BY AN ELIGIBLE GUARANTOR INSTITUTION
(BANKS, STOCKBROKERS, SAVINGS AND LOAN ASSOCIATIONS AND CREDIT UNIONS WITH MEMBERSHIP IN AN APPROVED SIGNATURE GUARANTEE MEDALLION PROGRAM,
PURSUANT TO THE U.S. SECURITIES AND EXCHANGE COMMISSION RULE 17Ad-15 (OR ANY SUCCESSOR RULE)) UNDER THE SECURITIES EXCHANGE ACT OF 1934,
AS AMENDED.

 

    A-4

     

    

 

Exhibit B

 

LEGEND

 

“THE SECURITIES REPRESENTED BY THIS CERTIFICATE HAVE NOT BEEN
REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED, OR ANY STATE SECURITIES LAWS, AND MAY NOT BE OFFERED, SOLD, TRANSFERRED OR OTHERWISE
DISPOSED OF UNLESS REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED, AND ANY APPLICABLE STATE SECURITIES LAWS OR AN EXEMPTION FROM
REGISTRATION IS AVAILABLE. IN ADDITION, SUBJECT TO ANY ADDITIONAL LIMITATIONS ON TRANSFER DESCRIBED IN THE LETTER AGREEMENT BY AND AMONG
TortoiseEcofin Acquisition Corp. III (THE “COMPANY”), TORTOISEECOFIN SPONSOR
III LLC, TORTOISEECOFIN BORROWER LLC AND THE OTHER PARTIES THERETO, THE SECURITIES REPRESENTED BY THIS CERTIFICATE MAY NOT BE SOLD OR
TRANSFERRED PRIOR TO THE DATE THAT IS THIRTY (30) DAYS AFTER THE DATE UPON WHICH THE COMPANY COMPLETES ITS INITIAL BUSINESS COMBINATION
(AS DEFINED IN SECTION 3 OF THE WARRANT AGREEMENT REFERRED TO HEREIN) EXCEPT TO A PERMITTED TRANSFEREE (AS DEFINED IN SECTION 2 OF THE
WARRANT AGREEMENT) WHO AGREES IN WRITING WITH THE COMPANY TO BE SUBJECT TO SUCH TRANSFER PROVISIONS.

 

SECURITIES EVIDENCED BY THIS CERTIFICATE AND CLASS A ORDINARY SHARES
OF THE COMPANY ISSUED UPON EXERCISE OF SUCH SECURITIES SHALL BE ENTITLED TO REGISTRATION RIGHTS UNDER A REGISTRATION RIGHTS AGREEMENT
TO BE EXECUTED BY THE COMPANY.”

 

No.              Warrants

 

 

B-1Exhibit 10.1

 

Execution Version

 

July 19, 2021

 

TortoiseEcofin Acquisition Corp. III

5100 W. 115th Place

Leawood, KS 66211

 

Re: Initial Public Offering

 

Ladies and Gentlemen:

 

This letter (this “Letter
Agreement”) is being delivered to you in accordance with the Underwriting Agreement (the “Underwriting Agreement”)
entered into by and among TortoiseEcofin Acquisition Corp. III, a Cayman Islands exempted company (the “Company”),
and Barclays Capital Inc. and Goldman Sachs & Co. LLC, as representatives (the “Representatives”) of the
several underwriters (the “Underwriters”), relating to an underwritten initial public offering (the “Public
Offering”), of 34,500,000 of the Company’s units (including up to 4,500,000 units which may be purchased to cover
over-allotments, if any) (the “Units”), each comprised of one of the Company’s Class A ordinary shares,
par value $0.0001 per share (the “Class A Ordinary Shares”), and one-fourth of one redeemable warrant (each
whole warrant, a “Warrant”). Each Warrant entitles the holder thereof to purchase one Class A Ordinary Share
at a price of $11.50 per share, subject to adjustment. The Units shall be sold in the Public Offering pursuant to the registration statement
on Form S-1 No. 333-253586 and prospectus (the “Prospectus”) filed by the Company with the Securities and Exchange
Commission (the “Commission”) and the Company shall apply to have the Units listed on the New York Stock Exchange.
Certain capitalized terms used herein are defined in paragraph 11 hereof.

 

In order to induce the Company
and the Underwriters to enter into the Underwriting Agreement and to proceed with the Public Offering and for other good and valuable
consideration, the receipt and sufficiency of which are hereby acknowledged, TortoiseEcofin Sponsor III LLC, a Cayman Islands limited
liability company (the “Sponsor”), TortoiseEcofin Borrower LLC, a Delaware limited liability company (“TortoiseEcofin
Borrower”), and each of the undersigned individuals, each of whom is a member of the Company’s board of directors
and/or management team (each an “Insider” and, collectively, the “Insiders”), hereby
agree with the Company as follows:

 

1. The
Sponsor, TortoiseEcofin Borrower and each Insider agree that if the Company seeks shareholder approval of a proposed Business Combination,
then in connection with such proposed Business Combination, it, he or she shall vote all Founder Shares and any shares acquired by it,
him or her in the Public Offering or the secondary public market in favor of such proposed Business Combination.

 

2. The
Sponsor, TortoiseEcofin Borrower and each Insider hereby agree that in the event that the Company fails to consummate a Business Combination
within 24 months from the closing of the Public Offering, or 27 months from the closing of the Public Offering if the Company has executed
a letter of intent, agreement in principal or definitive agreement for a Business Combination within 24 months from the closing of the
Public Offering but has not completed the Business Combination within such 24-month period, or such later period approved by the Company’s
shareholders in accordance with the Company’s amended and restated memorandum and articles of association, as may be amended from
time to time (the “Memorandum and Articles”), the Sponsor, TortoiseEcofin Borrower and each Insider shall take
all reasonable steps to cause the Company to (i) cease all operations except for the purpose of winding up, (ii) as promptly as reasonably
possible but not more than 10 business days thereafter, subject to lawfully available funds therefor, redeem 100% of the Class A Ordinary
Shares sold as part of the Units in the Public Offering (the “Offering Shares”), at a per-share price, payable
in cash, equal to the aggregate amount then on deposit in the Trust Account, including interest not previously released to the Company
to pay its income taxes (less up to $100,000 of interest to pay dissolution expenses), divided by the number of then outstanding Offering
Shares, which redemption will completely extinguish the Public Shareholders’ rights as shareholders (including the right to receive
further liquidation distributions, if any), subject to applicable law and (iii) as promptly as reasonably possible following such redemption,
subject to the approval of the Company’s remaining shareholders and the Company’s board of directors, dissolve and liquidate,
subject, in the case of clauses (ii) and (iii), to the Company’s obligations under Cayman Islands law to provide for claims of creditors
and other requirements of applicable law. The Sponsor, TortoiseEcofin Borrower and the Insiders agree to not propose any amendment to
the Memorandum and Articles that would affect the substance or timing of the Company’s obligation to redeem 100% of the Offering
Shares if the Company does not complete a Business Combination within 24 months (or 27 months, as applicable) from the closing of the
Public Offering, unless the Company provides its Public Shareholders with the opportunity to redeem their Offering Shares upon approval
of any such amendment at a per share price, payable in cash, equal to the aggregate amount then on deposit in the Trust Account including
interest earned on the funds held in the Trust Account and not previously released to the Company to pay its income taxes, divided by
the number of then outstanding Offering Shares.

 

     

     

    

 

The Sponsor, TortoiseEcofin Borrower
and each Insider acknowledges that it, he or she has no right, title, interest or claim of any kind in or to any monies held in the Trust
Account or any other asset of the Company as a result of any liquidation of the Company with respect to the Founder Shares. The Sponsor,
TortoiseEcofin Borrower and each Insider hereby further acknowledges, with respect to any of the Class A Ordinary Shares and the Class
B ordinary shares, par value $0.0001 per share (the “Class B Ordinary Shares” and, together with the Class A
Ordinary Shares, the “Ordinary Shares”), held by it, him or her, that it, he or she will not be entitled to
any redemption rights in connection with the consummation of a Business Combination, including, without limitation, any such rights available
in the context of a shareholder vote to approve such Business Combination or in the context of a tender offer made by the Company to purchase
the Class A Ordinary Shares and in connection with a shareholder vote to amend the Memorandum and Articles in a manner that would affect
the substance or timing of the Company’s obligation to redeem 100% of the Company’s public shares if the Company has not consummated
a Business Combination within 24 months (or 27 months, as applicable) from the closing of the Public Offering (although the Sponsor, TortoiseEcofin
Borrower and the Insiders and their respective affiliates shall be entitled to redemption and liquidation rights with respect to any of
the Ordinary Shares (other than the Founder Shares) it or they hold if the Company fails to consummate a Business Combination within 24
months (or 27 months, as applicable) from the date of the closing of the Public Offering or such later date as may be specified in an
amendment to the Memorandum and Articles).

 

To the fullest extent permitted
by applicable law, the Company hereby agrees to defend, indemnify, hold harmless and exonerate (including the advancement of expenses
to the fullest extent permitted by applicable law) the Sponsor and its members (present and former), managers and affiliates and their
respective present and former officers and directors (each, a “Sponsor Indemnitee”) from any and all costs,
fees, expenses, judgments, liabilities, fines, penalties, reasonable attorneys’ fees and amounts paid in settlement (including all
interest, assessments and other charges paid or payable in connection with or in respect of such costs, fees, expenses, judgments, liabilities,
fines, penalties and amounts paid in settlement) actually, and reasonably, incurred by a Sponsor Indemnitee or on a Sponsor Indemnitee’s
behalf in connection with any threatened, pending or completed action, suit, arbitration, mediation, alternate dispute resolution mechanism,
investigation, inquiry, hearing or any other actual, threatened or completed proceeding instituted by the Company or any third party,
whether civil, criminal, administrative or investigative in nature, in respect of any investment opportunities sourced by a Sponsor Indemnitee
for the Company or any liability arising with respect to a Sponsor Indemnitee’s activities in connection with the affairs of the
Company (in each case to the extent that such indemnification, hold harmless and exoneration obligations with respect to such matters
are not expressly covered by a separate written agreement between the Company and the applicable Sponsor Indemnitee); provided, that in
no event shall a Sponsor Indemnitee be entitled to be indemnified or held harmless hereunder in respect of any costs, fees, expenses,
judgments, liabilities, fines, penalties and amounts paid in settlement (if any) that Sponsor Indemnitee may incur by reason of such person’s
own actual fraud or intentional misconduct; provided further, for the avoidance of doubt, that under no circumstance shall a Sponsor Indemnitee
have a claim to any monies or assets held in the Trust Account, and the Company shall not be permitted to procure monies or assets held
in the Trust Account for the satisfaction of its obligations to any Sponsor Indemnitee in respect of the indemnification provided hereunder.
The Sponsor Indemnitees shall be third party beneficiaries of this paragraph.  

 

3. During
the period commencing on the effective date of the Underwriting Agreement and ending 180 days after such date, the undersigned shall not,
without the prior written consent of Barclays Capital Inc. and Goldman Sachs & Co. LLC, (i) sell, offer to sell, contract or agree
to sell, hypothecate, pledge, grant any option to purchase or otherwise dispose of or agree to dispose of, directly or indirectly, or
establish or increase a put equivalent position or liquidate or decrease a call equivalent position within the meaning of Section 16 of
the Securities Exchange Act of 1934, as amended (the “Exchange Act”), and the rules and regulations of the Commission
promulgated thereunder, any Units, Ordinary Shares, Warrants or any securities convertible into, or exercisable, or exchangeable for,
Class A Ordinary Shares owned by him, her or it; provided, however, that the foregoing shall not apply to transfers to the Sponsor
by the Insiders, (ii) enter into any swap or other arrangement that transfers to another, in whole or in part, any of the economic consequences
of ownership of any Units, Class A Ordinary Shares, Founder Shares, Warrants or any securities convertible into, or exercisable, or exchangeable
for, Class A Ordinary Shares owned by him, her or it, whether any such transaction is to be settled by delivery of such securities, in
cash or otherwise or (iii) publicly announce any intention to effect any transaction specified in clause (i) or (ii). If the undersigned
is an officer or director of the Company, the undersigned further agrees that the forgoing restrictions shall be equally applicable to
any issuer-directed Units that the undersigned may purchase in the Public Offering.

 

    	 	2	 

     

    

 

4. In
the event of the liquidation of the Trust Account, the Sponsor (which for purposes of clarification shall not extend to any officer, member
or manager of the Sponsor) agrees to indemnify and hold harmless the Company against any and all loss, liability, claim, damage and expense
whatsoever (including, but not limited to, any and all legal or other expenses reasonably incurred in investigating, preparing or defending
against any litigation, whether pending or threatened, or any claim whatsoever) to which the Company may become subject as a result of
any claim by (i) any third party (other than the Company’s independent public accountants) for services rendered or products sold
to the Company or (ii) a prospective target business with which the Company has entered into a letter of intent, confidentiality or other
similar agreement or business combination agreement (a “Target”); provided, however, that such indemnification
of the Company by the Sponsor shall apply only to the extent necessary to ensure that such claims by a third party for services rendered
(other than the Company’s independent public accountants) or products sold to the Company or a Target do not reduce the amount of
funds in the Trust Account to below the lesser of (A) $10.00 per share of the Offering Shares and (B) the actual amount per share of the
Offering Shares held in the Trust Account due to reductions in the value of the trust assets as of the date of the liquidation of the
Trust Account, in each case including interest earned on the funds held in the Trust Account and not previously released to the Company
to pay its income taxes, less income taxes payable, except as to any claims by a third party or Target that executed an agreement waiving
claims against and all rights to seek access to the Trust Account whether or not such agreement is enforceable. In the event that any
such executed waiver is deemed to be unenforceable against such third party, the Sponsor shall not be responsible for any liability as
a result of any such third-party claims. Notwithstanding any of the foregoing, such indemnification of the Company by the Sponsor shall
not apply as to any claims under the Company’s obligation to indemnify the Underwriters against certain liabilities, including liabilities
under the Securities Act of 1933, as amended (the “Securities Act”). The Sponsor shall have the right to defend
against any such claim with counsel of its choice reasonably satisfactory to the Company if, within 15 days following written receipt
of notice of the claim to the Sponsor, the Sponsor notifies the Company in writing that it shall undertake such defense.

 

5. To
the extent that the Underwriters do not exercise their over-allotment option to purchase an additional 4,500,000 Units (as described in
the Prospectus), the Sponsor agrees, upon the expiration or waiver of such option, to forfeit, for cancellation at no cost, a number of
Founder Shares equal to 1,125,000 multiplied by a fraction, (i) the numerator of which is 4,500,000 minus the number of Units purchased
by the Underwriters upon the exercise of their over-allotment option, and (ii) the denominator of which is 4,500,000. The forfeiture will
be adjusted to the extent that the over-allotment option is not exercised in full by the Underwriters so that the Founder Shares will
represent 20.0% of the Company’s issued and outstanding Ordinary Shares after the Public Offering. The Sponsor further agrees that
to the extent that (a) the size of the Public Offering is increased or decreased and (b) the Sponsor has either purchased or sold Ordinary
Shares or an adjustment to the number of Founder Shares has been effected by way of a share sub-division, share dividend, reverse share
sub-division, contribution back to capital or otherwise, in each case in connection with such increase or decrease in the size of the
Public Offering, then (A) the references to 4,500,000 in the numerator and denominator of the formula in the first sentence of this paragraph
shall be changed to a number equal to 15.0% of the number of Class A Ordinary Shares included in the Units issued in the Public Offering
and (B) the reference to 1,125,000 in the formula set forth in the first sentence of this paragraph shall be adjusted to such number of
Founder Shares that the Sponsor would have to collectively return to the Company in order for all holders of Founder Shares to hold an
aggregate of 20.0% of the Company’s issued and outstanding Ordinary Shares after the Public Offering.

 

6. Each of the Sponsor, TortoiseEcofin
Borrower and each Insider hereby agrees and acknowledges that: (i) each of the Underwriters and the Company would be irreparably injured
in the event of a breach by the Sponsor of its obligations under paragraphs 1, 2, 3, 4, 5, 7(a) and 7(d), by each Insider of his
or her obligations under paragraphs 1, 2, 3, 7(a) and 7(d) or TortoiseEcofin Borrower of its obligations under paragraphs 1, 2, 3, 7(b)
and 7(d) of this Letter Agreement, (ii) monetary damages may not be an adequate remedy for such breach and (iii) the non-breaching party
shall be entitled to injunctive relief, in addition to any other remedy that such party may have in law or in equity, in the event of
such breach.

 

    	 	3	 

     

    

 

7. (a) Subject to the exceptions
set forth herein, the Sponsor and each Insider agree not to transfer, assign or sell any Founder Shares or the Class A Ordinary Shares
issuable upon conversion of the Founder shares held by it, him or her until the earlier of (i) one year after the date of the consummation
of a Business Combination and (ii) the earlier to occur of, subsequent to a Business Combination, (A) the first date on which the last
reported sale price of the Class A Ordinary Shares equals or exceeds $12.00 per share (as adjusted for share sub-divisions, share dividends,
reorganizations, recapitalizations and the like) for any 20 trading days within any 30-trading day period commencing at least 120 days
after the consummation of a Business Combination and (B) the date on which the Company consummates a subsequent liquidation, merger, share
exchange or other similar transaction which results in all of the Company’s shareholders having the right to exchange their Class
A Ordinary Shares for cash, securities or other property (the “Lock-up”).

 

(a) Subject
to the exceptions set forth herein, each of TortoiseEcofin Borrower, the Sponsor and each Insider agrees not to transfer, assign or sell
any Private Placement Warrants or Class A Ordinary Shares underlying such warrants held by it, him or her until 30 days after the completion
of a Business Combination.

 

(b) Notwithstanding
the provisions set forth in paragraphs 7(a) and (b), transfers of the Founder Shares, Private Placement Warrants and Class A Ordinary
Shares issued or issuable upon the exercise or conversion of the Private Placement Warrants or the Founder Shares and that are held by
TortoiseEcofin Borrower, the Sponsor, any Insider or any of their permitted transferees, as applicable (that have complied with any applicable
requirements of this paragraph 7(c)), are permitted (i) in the case of TortoiseEcofin Borrower, the Sponsor, any Insider or any of
their permitted transferees, to the Company’s officers or directors, any affiliates or family members of any of the Company’s
officers or directors, the Sponsor, any members of the Sponsor or their affiliates, any affiliates of the Sponsor, TortoiseEcofin Borrower
or any of its affiliates, or any members, officers, directors or employees of TortoiseEcofin Borrower or its affiliates; (ii) in the case
of an individual, by gift to members of the individual’s immediate family or to a trust, the beneficiary of which is a member of
one of the individual’s immediate family, an affiliate of such person or to a charitable organization; (iii) in the case of an individual,
by virtue of laws of descent and distribution upon death of the individual; (iv) in the case of an individual, pursuant to a qualified
domestic relations order; (v) by virtue of the laws of the Cayman Islands or the State of Delaware, as applicable, the Sponsor’s
operating agreement upon dissolution of the Sponsor or TortoiseEcofin Borrower’s operating agreement upon dissolution of TortoiseEcofin
Borrower; (vi) by private sales or transfers made in connection with the consummation of a Business Combination at prices no greater than
the price at which the securities were originally purchased; (vii) in the event of the Company’s liquidation prior to the completion
of a Business Combination; or (viii) in the event of completion of a liquidation, merger, share exchange or other similar transaction
which results in all of the Company’s shareholders having the right to exchange their Class A Ordinary Shares for cash, securities
or other property subsequent to the completion of a Business Combination; provided, however, that in the case of clauses (i) through
(vi), these permitted transferees must enter into a written agreement agreeing to be bound by these transfer restrictions.

 

(c) The
Sponsor, TortoiseEcofin Borrower and the Insiders acknowledge and agree that if, in order to consummate any Business Combination, the
holders of Founder Shares or Private Placement Warrants are required to contribute back to the capital of the Company a portion of any
such securities to be cancelled by the Company or transfer any such securities to third parties, the Sponsor, TortoiseEcofin Borrower
and the Insiders will contribute back to the capital of the Company or transfer to such third parties, at no cost, a proportionate number
of Founder Shares or Private Placement Warrants, as applicable, pro rata with the other holders of Founder Shares or Private Placement
Warrants, as applicable.

 

8. Each
Insider’s biographical information furnished to the Company and the Representatives that is included in the Prospectus is true and
accurate in all respects and does not omit any material information with respect to such Insider’s background and contains all of
the information required to be disclosed pursuant to Item 401 of Regulation S-K, promulgated under the Securities Act. Each Insider’s
questionnaire furnished to the Company and the Representatives including any such information that is included in the Prospectus is true
and accurate in all respects. Each Insider represents and warrants that: such Insider is not subject to or a respondent in any legal action
for, any injunction, cease-and-desist order or order or stipulation to desist or refrain from any act or practice relating to the offering
of securities in any jurisdiction; such Insider has never been convicted of, or pleaded guilty to, any crime (i) involving fraud, (ii)
relating to any financial transaction or handling of funds of another person or (iii) pertaining to any dealings in any securities and
such Insider is not currently a defendant in any such criminal proceeding; and none of the Sponsor or any such Insider has ever been suspended
or expelled from membership in any securities or commodities exchange or association or had a securities or commodities license or registration
denied, suspended or revoked.

 

    	 	4	 

     

    

 

9. Except
as disclosed in the Prospectus, none of the Sponsor, TortoiseEcofin Borrower, the Insiders or their respective affiliates shall receive
any finder’s fee, reimbursement, consulting fee, monies in respect of any repayment of a loan or other compensation prior to, or
in connection with any services rendered in order to effectuate the consummation of the Company’s initial Business Combination (regardless
of the type of transaction that it is). However, such persons may receive the following payments, none of which will be made from the
proceeds held in the Trust Account prior to the completion of the initial Business Combination: repayment of a loan of up to $600,000
made to the Company by the Sponsor pursuant to a Promissory Note dated February 3, 2021; payment of an aggregate of $10,000 per month,
to Tortoise Capital Advisors, L.L.C., for office space, utilities and secretarial and administrative support, pursuant to an Administrative
Support Agreement, dated July 19, 2021; reimbursement for any reasonable out-of-pocket expenses related to identifying, investigating,
negotiating and consummating an initial Business Combination; and repayment of loans, if any, and on such terms as to be determined by
the Company from time to time, made by the Sponsor or an affiliate of the Sponsor or certain of the Company’s officers and directors
to finance transaction costs in connection with an intended initial Business Combination, provided, that, if the Company does not
consummate an initial Business Combination, a portion of the working capital held outside the Trust Account may be used by the Company
to repay such loaned amounts so long as no proceeds from the Trust Account are used for such repayment. Up to $1,500,000 of such loans
may be convertible into warrants at a price of $1.50 per warrant at the option of the lender. Such warrants shall be identical to the
Private Placement Warrants, including as to exercise price, exercisability and exercise period.

 

10. The
Sponsor, TortoiseEcofin Borrower and each Insider has full right and power, without violating any agreement to which it, he or she is
bound (including, without limitation, any non-competition or non-solicitation agreement with any employer or former employer), to enter
into this Letter Agreement and, as applicable, to serve as a director on the board of directors of the Company and each Insider hereby
consents to being named in the Prospectus as an officer and/or director of the Company, as applicable.

 

11. As
used herein, (i) “Business Combination” shall mean a merger, amalgamation, share exchange, asset acquisition,
share purchase, reorganization or similar business combination, involving the Company and one or more businesses or entities; (ii) “Founder
Shares” shall mean the Class B Ordinary Shares held by the Sponsor, the Company’s independent directors and any other
holder prior to the consummation of the Public Offering; (iii) “Private Placement Warrants” shall mean the warrants
to purchase 6,333,333 Class A Ordinary Shares (or 6,933,333 Class A Ordinary Shares if the Underwriters’ over-allotment option in
connection with the Public Offering is exercised in full), that TortoiseEcofin Borrower has agreed to purchase for an aggregate purchase
price of approximately $9,500,000 (or approximately $10,400,000 if the Underwriters’ over-allotment option in connection with the
Public Offering is exercised in full), or $1.50 per warrant, in a private placement that shall occur simultaneously with the consummation
of the Public Offering; (iv) “Public Shareholders” shall mean the holders of securities issued in the Public
Offering; and (v) “Trust Account” shall mean the trust fund into which a portion of the net proceeds of the
Public Offering shall be deposited.

 

12. This
Letter Agreement constitutes the entire agreement and understanding of the parties hereto in respect of the subject matter hereof and
supersedes all prior understandings, agreements or representations by or among the parties hereto, written or oral, to the extent they
relate in any way to the subject matter hereof or the transactions contemplated hereby. This Letter Agreement may not be changed, amended,
modified or waived (other than to correct a typographical error) as to any particular provision, except by a written instrument executed
by all parties hereto. Each of the parties hereto hereby acknowledges and agrees that each of Barclays Capital Inc. and Goldman Sachs
& Co. LLC, on behalf of the Underwriters, is a third-party beneficiary of this Letter Agreement.

 

13. No
party hereto may assign either this Letter Agreement or any of its rights, interests or obligations hereunder without the prior written
consent of the other parties. Any purported assignment in violation of this paragraph shall be void and ineffectual and shall not operate
to transfer or assign any interest or title to the purported assignee. This Letter Agreement shall be binding on the Sponsor, TortoiseEcofin
Borrower, each Insider and each of their respective successors, heirs and assigns and permitted transferees.

 

    	 	5	 

     

    

 

14. This
Letter Agreement shall be governed by and construed and enforced in accordance with the laws of the State of New York, without giving
effect to conflicts of law principles that would result in the application of the substantive laws of another jurisdiction. The parties
hereto (i) all agree that any action, proceeding, claim or dispute arising out of, or relating in any way to, this Letter Agreement shall
be brought and enforced in the courts of the State of New York located in the City and County of New York, Borough of Manhattan, and irrevocably
submit to such jurisdiction and venue, which jurisdiction and venue shall be exclusive and (ii) waive any objection to such exclusive
jurisdiction and venue or that such courts represent an inconvenient forum.

 

15. Any
notice, consent or request to be given in connection with any of the terms or provisions of this Letter Agreement shall be in writing
and shall be sent by express mail or similar private courier service, by certified mail (return receipt requested), by hand delivery or
facsimile transmission.

 

16. This
Letter Agreement shall terminate on the earlier of (i) the expiration of the Lock-up or (ii) the liquidation of the Company; provided,
however, that this Letter Agreement shall earlier terminate in the event that the Public Offering is not consummated and closed by
August 9, 2021, provided further that paragraph 4 of this Letter Agreement shall survive such liquidation.

 

[Signature Page Follows]

 

    	 	6	 

     

    

 

	 	Sincerely,
	 	 
	 	TORTOISEECOFIN SPONSOR III LLC
	 	By: TORTOISEECOFIN BORROWER LLC, its managing member
	 	 
	 	By:	/s/ Michelle Johnston     
	 	Name: 	Michelle Johnston
	 	Title:	Chief Financial Officer
	 	 	 
	 	TORTOISEECOFIN BORROWER LLC
	 	 	 
	 	By:	/s/ Michelle Johnston
	 	Name:	Michelle Johnston
	 	Title:	Chief Financial Officer

 

	 	INSIDERS:
	 	 
	 	/s/ Vincent T. Cubbage
	 	Vincent T. Cubbage
	 	 
	 	/s/ Stephen Pang
	 	Stephen Pang
	 	 
	 	/s/ William J. Clinton
	 	William J. Clinton
	 	 
	 	/s/ Juan J. Daboub
	 	Juan J. Daboub
	 	 
	 	/s/ Mary Beth Mandanas
	 	Mary Beth Mandanas
	 	 
	 	/s/ Steven C. Schnitzer
	 	Steven C. Schnitzer
	 	 
	 	/s/ Darrell Brock, Jr.
	 	Darrell Brock, Jr.
	 	 
	 	/s/ Evan Zimmer
	 	Evan Zimmer

 

[Signature Page to Letter Agreement]

 

     

     

    

 

	Acknowledged and Agreed:	 
	 	 
	TORTOISEECOFIN ACQUISITION CORP. III	 
	 	 	 
	By:	/s/ Vincent T. Cubbage	 
	Name: 	Vincent T. Cubbage	 
	Title:	Chief Executive Officer	 

 

[Signature Page to Letter Agreement]

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