EX-10.9





 Exhibit 10.9 

INDEMNITY AGREEMENT 

THIS INDEMNITY AGREEMENT (this “Agreement”) is made as of October 28, 2021, by and between AltEnergy Acquisition
Corp., a Delaware corporation (the “Company”), and Arul Gupta (“Indemnitee”). 
 RECITALS

 WHEREAS, highly competent persons have become more reluctant to serve publicly-held corporations as directors, officers or
in other capacities unless they are provided with adequate protection through insurance or adequate indemnification against inordinate risks of claims and actions against them arising out of their service to and activities on behalf of such
corporations; 
 WHEREAS, the Board of Directors of the Company (the “Board”) has determined that, in order to
attract and retain qualified individuals, the Company will attempt to maintain on an ongoing basis, at its sole expense, liability insurance to protect persons serving the Company and its subsidiaries from certain liabilities. Although the
furnishing of such insurance has been a customary and widespread practice among United States-based corporations and other business enterprises, the Company believes that, given current market conditions and trends, such insurance may be available
to it in the future only at higher premiums and with more exclusions. At the same time, directors, officers and other persons in service to corporations or business enterprises are being increasingly subjected to expensive and time-consuming
litigation relating to, among other things, matters that traditionally would have been brought only against the Company or business enterprise itself. The Amended and Restated Certificate of Incorporation (the “Charter”) and the
Bylaws (the “Bylaws”) of the Company require indemnification of the officers and directors of the Company. Indemnitee may also be entitled to indemnification pursuant to applicable provisions of the Delaware General Corporation Law
(“DGCL”). The Charter, Bylaws and the DGCL expressly provide that the indemnification provisions set forth therein are not exclusive, and thereby contemplate that contracts may be entered into between the Company and members of the
Board, officers and other persons with respect to indemnification, hold harmless, exoneration, advancement and reimbursement rights; 

WHEREAS, the uncertainties relating to such insurance and to indemnification have increased the difficulty of attracting and retaining
such persons; 
 WHEREAS, the Board has determined that the increased difficulty in attracting and retaining such persons is
detrimental to the best interests of the Company’s stockholders and that the Company should act to assure such persons that there will be increased certainty of such protection in the future; 

WHEREAS, it is reasonable, prudent and necessary for the Company contractually to obligate itself to indemnify, hold harmless,
exonerate and to advance expenses on behalf of, such persons to the fullest extent permitted by applicable law so that they will serve or continue to serve the Company free from undue concern that they will not be so protected against liabilities;

 WHEREAS, this Agreement is a supplement to and in furtherance of the Charter and Bylaws of the Company and any resolutions adopted
pursuant thereto, and shall not be deemed a substitute therefor, nor to diminish or abrogate any rights of Indemnitee thereunder; and 

WHEREAS, Indemnitee may not be willing to serve as an officer or director, advisor or in another capacity without adequate protection,
and the Company desires Indemnitee to serve in such capacity. Indemnitee is willing to serve, continue to serve and to take on additional service for or on behalf of the Company on the condition that he or she be so indemnified. 

NOW, THEREFORE, in consideration of the premises and the covenants contained herein and subject to the provisions of the letter
agreement, dated the date hereof, among the Company, Indemnitee and the other parties thereto, the Company and Indemnitee do hereby covenant and agree as follows: 












 TERMS AND CONDITIONS 

1. SERVICES TO THE COMPANY. In consideration of the Company’s covenants and obligations hereunder, Indemnitee will serve or
continue to serve as an officer, director, advisor, key employee or in any other capacity of the Company, as applicable, for so long as Indemnitee is duly elected or appointed or retained or until Indemnitee tenders his or her resignation or until
Indemnitee is removed. The foregoing notwithstanding, this Agreement shall continue in full force and effect after Indemnitee has ceased to serve as a director, officer, advisor, key employee or in any other capacity of the Company, as provided in
Section 17. This Agreement, however, shall not impose any obligation on Indemnitee or the Company to continue Indemnitee’s service to the Company beyond any period otherwise required by law or by other agreements or commitments of the
parties, if any. 
 2. DEFINITIONS. As used in this Agreement: 

(a) References to “agent” shall mean any person who is or was a director, officer or employee of the Company
or a subsidiary of the Company or other person authorized by the Company to act for the Company, to include such person serving in such capacity as a director, officer, employee, advisor, fiduciary or other official of another corporation,
partnership, limited liability company, joint venture, trust or other enterprise at the request of, for the convenience of, or to represent the interests of the Company or a subsidiary of the Company. 

(b) The terms “Beneficial Owner” and “Beneficial Ownership” shall have the meanings set forth
in Rule 13d-3 promulgated under the Exchange Act (as defined below) as in effect on the date hereof. 

(c) (c) A “Change in Control” shall be deemed to occur upon the earliest to occur after the date of this
Agreement of any of the following events: 
 (i) Acquisition of Stock by Third Party. Other than an affiliate
or member of AltEnergy Acquisition Sponsor, LLC (the “Sponsor”), any Person (as defined below) is or becomes the Beneficial Owner, directly or indirectly, of securities of the Company representing fifteen percent (15%) or more of
the combined voting power of the Company’s then outstanding securities entitled to vote generally in the election of directors, unless (1) the change in the relative Beneficial Ownership of the Company’s securities by any Person
results solely from a reduction in the aggregate number of outstanding shares of securities entitled to vote generally in the election of directors, or (2) such acquisition was approved in advance by the Continuing Directors (as defined below)
and such acquisition would not constitute a Change in Control under part (iii) of this definition; 
 (ii)
Change in Board of Directors. Individuals who, as of the date hereof, constitute the Board, and any new director whose election by the Board or nomination for election by the Company’s stockholders was approved by a vote of at
least two thirds of the directors then still in office who were directors on the date hereof or whose election or nomination for election was previously so approved (collectively, the “Continuing Directors”), cease for any reason to
constitute at least a majority of the members of the Board; 
 (iii) Corporate Transactions. The effective date of a
merger, capital stock exchange, asset acquisition, stock purchase, reorganization or similar business combination, involving the Company and one or more businesses (a “Business Combination”), in each case, unless, following such
Business Combination: (1) all or substantially all of the individuals and entities who were the Beneficial Owners of securities entitled to vote generally in the election of directors immediately prior to such Business Combination beneficially
own, directly or indirectly, more than 50% of the combined voting power of the then outstanding securities of the Company entitled to vote generally in the election of directors resulting from such Business Combination (including, without
limitation, a corporation which as a result of such transaction owns the Company or all or substantially all of the Company’s assets either directly or through one or more Subsidiaries (as defined below)) in substantially the same proportions
as their ownership immediately prior to such Business Combination, of the securities entitled to vote generally in the election of directors; (2) other than a 












 
member or an affiliate of the Sponsor, no Person (excluding any corporation resulting from such Business Combination) is the Beneficial Owner, directly or indirectly, of 15% or more of the
combined voting power of the then outstanding securities entitled to vote generally in the election of directors of the surviving corporation except to the extent that such ownership existed prior to the Business Combination; and (3) at least a
majority of the board of directors of the corporation resulting from such Business Combination were Continuing Directors at the time of the execution of the initial agreement, or of the action of the Board, providing for such Business Combination;

 (iv) Liquidation. The approval by the stockholders of the Company of a complete liquidation of the Company or an
agreement or series of agreements for the sale or disposition by the Company of all or substantially all of the Company’s assets, other than factoring the Company’s current receivables or escrows due (or, if such stockholder approval is
not required, the decision by the Board to proceed with such a liquidation, sale, or disposition in one transaction or a series of related transactions); or 

(v) Other Events. There occurs any other event of a nature that would be required to be reported in response to Item
6(e) of Schedule 14A of Regulation 14A (or any successor rule) (or a response to any similar item on any similar schedule or form) promulgated under the Exchange Act (as defined below), whether or not the Company is then subject to such reporting
requirement. 
 (d) “Corporate Status” describes the status of a person who is or was a director, officer,
trustee, general partner, manager, managing member, fiduciary, employee or agent of the Company or of any other Enterprise (as defined below) which such person is or was serving at the request of the Company. 

(e) “Delaware Court” shall mean the Court of Chancery of the State of Delaware. 

(f) “Disinterested Director” shall mean a director of the Company who is not and was not a party to the
Proceeding (as defined below) in respect of which indemnification is sought by Indemnitee. 
 (g)
“Enterprise” shall mean the Company and any other corporation, constituent corporation (including any constituent of a constituent) absorbed in a consolidation or merger to which the Company (or any of its wholly owned subsidiaries)
is a party, limited liability company, partnership, joint venture, trust, employee benefit plan or other enterprise of which Indemnitee is or was serving at the request of the Company as a director, officer, trustee, general partner, managing
member, fiduciary, employee or agent. 
 (h) “Exchange Act” shall mean the Securities Exchange Act of 1934,
as amended. 
 (i) “Expenses” shall include all direct and indirect costs, fees and expenses of any type or
nature whatsoever, including, without limitation, all reasonable attorneys’ fees and costs, retainers, court costs, transcript costs, fees of experts, witness fees, travel expenses, fees of private investigators and professional advisors,
duplicating costs, printing and binding costs, telecommunication charges, postage, delivery service fees, fax transmission charges, secretarial services and all other disbursements, obligations or expenses in connection with prosecuting, defending,
preparing to prosecute or defend, investigating, being or preparing to be a witness in, settlement or appeal of, or otherwise participating in, a Proceeding (as defined below), including reasonable compensation for time spent by Indemnitee for which
he or she is not otherwise compensated by the Company or any third party. Expenses also shall include Expenses incurred in connection with any appeal resulting from any Proceeding (as defined below), including without limitation the principal,
premium, security for, and other costs relating to any cost bond, supersedes a bond, or other appeal bond or its equivalent. Expenses, however, shall not include amounts paid in settlement by Indemnitee or the amount of judgments or fines against
Indemnitee. 
 (j) References to “fines” shall include any excise tax assessed on Indemnitee with respect to
any employee benefit plan; references to “serving at the request of the Company” shall include any service as a director, officer, employee, agent or fiduciary of the Company which imposes duties on, or involves services by, such director,
officer, employee, agent or fiduciary with respect to an employee benefit plan, its participants or beneficiaries; and if Indemnitee acted in good faith and in a manner Indemnitee reasonably believed to be in the best interests of the participants
and beneficiaries of an employee benefit plan, Indemnitee shall be deemed to have acted in a manner “not opposed to the best interests of the Company” as referred to in this Agreement. 












 (k) “Independent Counsel” shall mean a law firm or a member
of a law firm with significant experience in matters of corporation law and that neither presently is, nor in the past five years has been, retained to represent: (i) the Company or Indemnitee in any matter material to either such party (other
than with respect to matters concerning Indemnitee under this Agreement, or of other indemnitees under similar indemnification agreements); or (ii) any other party to the Proceeding (as defined below) giving rise to a claim for indemnification
hereunder. Notwithstanding the foregoing, the term “Independent Counsel” shall not include any person who, under the applicable standards of professional conduct then prevailing, would have a conflict of interest in representing
either the Company or Indemnitee in an action to determine Indemnitee’s rights under this Agreement. 
 (l) The term
“Person” shall have the meaning as set forth in Sections 13(d) and 14(d) of the Exchange Act as in effect on the date hereof; provided, however, that “Person” shall exclude: (i) the Company; (ii) any
Subsidiaries (as defined below) of the Company; (iii) any employment benefit plan of the Company or of a Subsidiary (as defined below) of the Company or of any corporation owned, directly or indirectly, by the stockholders of the Company in
substantially the same proportions as their ownership of stock of the Company; and (iv) any trustee or other fiduciary holding securities under an employee benefit plan of the Company or of a Subsidiary (as defined below) of the Company or of a
corporation owned directly or indirectly by the stockholders of the Company in substantially the same proportions as their ownership of stock of the Company. 

(m) The term “Proceeding” shall include any threatened, pending or completed action, suit, arbitration,
mediation, alternate dispute resolution mechanism, investigation, inquiry, administrative hearing or any other actual, threatened or completed proceeding, whether brought in the right of the Company or otherwise and whether of a civil (including
intentional or unintentional tort claims), criminal, administrative or investigative or related nature, in which Indemnitee was, is, will or might be involved as a party or otherwise by reason of the fact that Indemnitee is or was a director or
officer of the Company, by reason of any action (or failure to act) taken by him or her or of any action (or failure to act) on his or her part while acting as a director or officer of the Company, or by reason of the fact that he or she is or was
serving at the request of the Company as a director, officer, trustee, general partner, managing member, fiduciary, employee or agent of any other Enterprise, in each case whether or not serving in such capacity at the time any liability or expense
is incurred for which indemnification, reimbursement, or advancement of expenses can be provided under this Agreement. 
 (n)
The term “Subsidiary,” with respect to any Person, shall mean any corporation, limited liability company, partnership, joint venture, trust or other entity of which a majority of the voting power of the voting equity securities or
equity interest is owned, directly or indirectly, by that Person. 
 (o) The phrase “to the fullest extent permitted
by applicable law” shall include, but not be limited to: (a) to the fullest extent authorized or permitted by the provision of the DGCL that authorizes or contemplates additional indemnification by agreement, or the corresponding
provision of any amendment to or replacement of the DGCL, and (b) to the fullest extent authorized or permitted by any amendments to or replacements of the DGCL adopted after the date of this Agreement that increase the extent to which a
corporation may indemnify its officers and directors. 
 3. INDEMNITY IN THIRD-PARTY PROCEEDINGS. To the fullest extent permitted by
applicable law, the Company shall indemnify, hold harmless and defend Indemnitee in accordance with the provisions of this Section 3 if Indemnitee was, is, or is threatened to be made, a party to or a participant (as a witness, deponent or
otherwise) in any Proceeding, other than a Proceeding by or in the right of the Company to procure a judgment in its favor by reason of Indemnitee’s Corporate Status. Pursuant to this Section 3, Indemnitee shall be indemnified, held
harmless and exonerated against all Expenses, judgments, liabilities, fines, penalties and amounts paid in settlement (including all interest, assessments and other charges paid or payable in connection with or in respect of such













 
Expenses, judgments, fines, penalties and amounts paid in settlement) actually, and reasonably incurred by Indemnitee or on his or her behalf in connection with such Proceeding or any claim,
issue or matter therein, if Indemnitee acted in good faith and in a manner he or she reasonably believed to be in or not opposed to the best interests of the Company and, in the case of a criminal Proceeding, had no reasonable cause to believe that
his or her conduct was unlawful; provided, in no event shall Indemnitee be entitled to be indemnified, held harmless or advanced any amounts hereunder in respect of any Expenses, judgments, liabilities, fines, penalties and amounts paid in
settlement (if any) that Indemnitee may incur by reason of his or her own actual fraud or intentional misconduct. Indemnitee shall not be found to have committed actual fraud or intentional misconduct for any purpose of this Agreement unless or
until a court of competent jurisdiction shall have made a finding to that effect. 
 4. INDEMNITY IN PROCEEDINGS BY OR IN THE RIGHT OF
THE COMPANY. To the fullest extent permitted by applicable law, the Company shall indemnify, hold harmless and exonerate Indemnitee in accordance with the provisions of this Section 4 if Indemnitee was, is, or is threatened to be made, a
party to or a participant (as a witness, deponent or otherwise) in any Proceeding by or in the right of the Company to procure a judgment in its favor by reason of Indemnitee’s Corporate Status. Pursuant to this Section 4, Indemnitee shall
be indemnified, held harmless and exonerated against all Expenses actually and reasonably incurred by him or her or on his or her behalf in connection with such Proceeding or any claim, issue or matter therein, if Indemnitee acted in good faith and
in a manner he or she reasonably believed to be in or not opposed to the best interests of the Company. No indemnification, hold harmless or exoneration for Expenses shall be made under this Section 4 in respect of any claim, issue or matter as
to which Indemnitee shall have been finally adjudged by a court of competent jurisdiction to be liable to the Company, unless and only to the extent that any court in which the Proceeding was brought or the Delaware Court shall determine upon
application that, despite the adjudication of liability but in view of all the circumstances of the case, Indemnitee is fairly and reasonably entitled to indemnification, to be held harmless or to exoneration. 

5. INDEMNIFICATION FOR EXPENSES OF A PARTY WHO IS WHOLLY OR PARTLY SUCCESSFUL. Notwithstanding any other provisions of this Agreement
except for Section 27, to the extent that Indemnitee was or is, by reason of Indemnitee’s Corporate Status, a party to (or a participant in) and is successful, on the merits or otherwise, in any Proceeding or in defense of any claim, issue
or matter therein, in whole or in part, the Company shall, to the fullest extent permitted by applicable law, indemnify, hold harmless and exonerate Indemnitee against all Expenses actually and reasonably incurred by him or her in connection
therewith. If Indemnitee is not wholly successful in such Proceeding but is successful, on the merits or otherwise, as to one or more but less than all claims, issues or matters in such Proceeding, the Company shall, to the fullest extent permitted
by applicable law, indemnify, hold harmless and exonerate Indemnitee against all Expenses actually and reasonably incurred by him or her or on his or her behalf in connection with each successfully resolved claim, issue or matter. If Indemnitee is
not wholly successful in such Proceeding, the Company also shall, to the fullest extent permitted by applicable law, indemnify, hold harmless and exonerate Indemnitee against all Expenses reasonably incurred in connection with a claim, issue or
matter related to any claim, issue, or matter on which Indemnitee was successful. For purposes of this Section and without limitation, the termination of any claim, issue or matter in such a Proceeding by dismissal, with or without prejudice, shall
be deemed to be a successful result as to such claim, issue or matter. 
 6. INDEMNIFICATION FOR EXPENSES OF A WITNESS.
Notwithstanding any other provision of this Agreement except for Section 27, to the extent that Indemnitee is, by reason of his or her Corporate Status, a witness or deponent in any Proceeding to which Indemnitee was or is not a party or
threatened to be made a party, he or she shall, to the fullest extent permitted by applicable law, be indemnified, held harmless and exonerated against all Expenses actually and reasonably incurred by him or her or on his or her behalf in connection
therewith. 
 7. ADDITIONAL INDEMNIFICATION, HOLD HARMLESS AND EXONERATION RIGHTS. Notwithstanding any limitation in Sections 3, 4,
or 5, except for Section 27, the Company shall, to the fullest extent permitted by applicable law, indemnify, hold harmless and exonerate Indemnitee if Indemnitee is a party to or threatened to be made a party to any Proceeding (including a
Proceeding by or in the right of the Company to procure a judgment in its favor) against all Expenses, judgments, fines, penalties and amounts paid in settlement (including all interest, assessments and other charges paid or payable in connection
with or in respect of such Expenses, judgments, fines, penalties and amounts paid in settlement) actually and reasonably incurred by Indemnitee in connection with the Proceeding. No indemnification, hold harmless or exoneration rights shall be
available under this Section 7 on account of Indemnitee’s conduct which constitutes a breach of Indemnitee’s duty of loyalty to the Company or its stockholders or is an act or omission not in good faith or which involves intentional
misconduct or a knowing violation of the law. 












 8. CONTRIBUTION IN THE EVENT OF JOINT LIABILITY. 

(a) To the fullest extent permissible under applicable law, if the indemnification, hold harmless and/or exoneration rights
provided for in this Agreement are unavailable to Indemnitee in whole or in part for any reason whatsoever, the Company, in lieu of indemnifying, holding harmless or exonerating Indemnitee, shall pay, in the first instance, the entire amount
incurred by Indemnitee, whether for judgments, liabilities, fines, penalties, amounts paid or to be paid in settlement and/or for Expenses, in connection with any Proceeding without requiring Indemnitee to contribute to such payment, and the Company
hereby waives and relinquishes any right of contribution it may have at any time against Indemnitee. 
 (b) The Company shall
not enter into any settlement of any Proceeding in which the Company is jointly liable with Indemnitee (or would be if joined in such Proceeding) unless such settlement provides for a full and final release of all claims asserted against Indemnitee.

 (c) The Company hereby agrees to fully indemnify, hold harmless and exonerate Indemnitee from any claims for contribution
which may be brought by officers, directors or employees of the Company other than Indemnitee who may be jointly liable with Indemnitee. 

9. EXCLUSIONS. Notwithstanding any provision in this Agreement (except for section 27), the Company shall not be obligated under this
Agreement to make any indemnification, advance expenses, hold harmless or exoneration payment in connection with any claim made against Indemnitee: 

(a) for which payment has actually been received by or on behalf of Indemnitee under any insurance policy or other indemnity or
advancement provision, except with respect to any excess beyond the amount actually received under any insurance policy, contract, agreement, other indemnity or advancement provision or otherwise; 

(b) for an accounting of profits made from the purchase and sale (or sale and purchase) by Indemnitee of securities of the
Company within the meaning of Section 16(b) of the Exchange Act (or any successor rule) or similar provisions of state statutory law or common law; or 

(c) except as otherwise provided in Sections 14(f) and (g) hereof, prior to a Change in Control, in connection with any
Proceeding (or any part of any Proceeding) initiated by Indemnitee, including any Proceeding (or any part of any Proceeding) initiated by Indemnitee against the Company or its directors, officers, employees or other indemnitees, unless (i) the
Board authorized the Proceeding (or any part of any Proceeding) prior to its initiation or (ii) the Company provides the indemnification, hold harmless or exoneration payment, in its sole discretion, pursuant to the powers vested in the Company
under applicable law. Indemnitee shall seek payments or advances from the Company only to the extent that such payments or advances are unavailable from any insurance policy of the Company covering Indemnitee. 

10. 10. ADVANCES OF EXPENSES; DEFENSE OF CLAIM. 

(a) Notwithstanding any provision of this Agreement to the contrary except for Section 27, and to the fullest extent not
prohibited by applicable law, the Company shall pay the Expenses incurred by Indemnitee (or reasonably expected by Indemnitee to be incurred by Indemnitee within three months) in connection with any Proceeding within ten (10) days after the
receipt by the Company of a statement or statements requesting such advances from time to time, prior to the final disposition of any Proceeding. Advances shall, to the fullest extent permitted by law, be unsecured and interest free. Advances shall,
to the fullest extent permitted by law, be made without regard to Indemnitee’s ability to repay the Expenses and without regard to Indemnitee’s ultimate entitlement to be indemnified, held harmless or exonerated under the other provisions
of this Agreement. Advances shall include any and all reasonable Expenses incurred pursuing a Proceeding to enforce this right of advancement, including Expenses incurred preparing and 












 
forwarding statements to the Company to support the advances claimed. To the fullest extent required by applicable law, such payments of Expenses in advance of the final disposition of the
Proceeding shall be made only upon the Company’s receipt of an undertaking, by or on behalf of Indemnitee, to repay the advanced amounts to the extent that it is ultimately determined that Indemnitee is not entitled to be indemnified by the
Company under the provisions of this Agreement, the Charter, the Bylaws of the Company, applicable law or otherwise. If it shall be determined by a final judgment or other final adjudication that Indemnitee was not so entitled to indemnification,
any advancement shall be returned to the Company (without interest) by the Indemnitee. This Section 10(a) shall not apply to any claim made by Indemnitee for which an indemnification, hold harmless or exoneration payment is excluded pursuant to
Section 9 but shall apply to any Proceeding referenced in Section 9(b) prior to a final determination that Indemnitee is liable therefor. 

(b) The Company will be entitled to participate in the Proceeding at its own expense. 

(c) The Company shall not settle any action, claim or Proceeding (in whole or in part) which would impose any Expense,
judgment, fine, penalty or limitation on Indemnitee without Indemnitee’s prior written consent. 
 11. PROCEDURE FOR NOTIFICATION AND
APPLICATION FOR INDEMNIFICATION. 
 (a) Indemnitee agrees to notify promptly the Company in writing upon being served with
any summons, citation, subpoena, complaint, indictment, information or other document relating to any Proceeding, claim, issue or matter therein which may be subject to indemnification, hold harmless or exoneration rights, or advancement of Expenses
covered hereunder. The failure of Indemnitee to so notify the Company shall not relieve the Company of any obligation which it may have to Indemnitee under this Agreement, or otherwise. 

(b) Indemnitee may deliver to the Company a written application to indemnify, hold harmless or exonerate 

(c) Indemnitee in accordance with this Agreement. Such application(s) may be delivered from time to time and at such time(s) as
Indemnitee deems appropriate in his or her sole discretion. Following such a written application for indemnification by Indemnitee, Indemnitee’s entitlement to indemnification shall be determined according to Section 12(a) of this
Agreement. 
 12. PROCEDURE UPON APPLICATION FOR INDEMNIFICATION. 

(a) A determination, if required by applicable law, with respect to Indemnitee’s entitlement to indemnification shall be
made in the specific case by one of the following methods, which shall be at the election of Indemnitee: (i) by a majority vote of the Disinterested Directors, even though less than a quorum of the Board, (ii) by a committee of such
directors designated by majority vote of such directors, (iii) if there are no Disinterested Directors or if such directors so direct, by Independent Counsel in a written opinion to the Board, a copy of which shall be delivered to Indemnitee,
or (iv) by vote of the stockholders. The Company promptly will advise Indemnitee in writing with respect to any determination that Indemnitee is or is not entitled to indemnification, including a description of any reason or basis for which
indemnification has been denied. If it is so determined that Indemnitee is entitled to indemnification, payment to Indemnitee shall be made within ten (10) days after such determination. Indemnitee shall reasonably cooperate with the person,
persons or entity making such determination with respect to Indemnitee’s entitlement to indemnification, including providing to such person, persons or entity upon reasonable advance request any documentation or information which is not
privileged or otherwise protected from disclosure and which is reasonably available to Indemnitee and reasonably necessary to such determination. Any costs or Expenses (including reasonable attorneys’ fees and disbursements) incurred by
Indemnitee in so cooperating with the person, persons or entity making such determination shall be borne by the Company (irrespective of the determination as to Indemnitee’s entitlement to indemnification) and the Company hereby agrees to
indemnify and to hold Indemnitee harmless therefrom. 












 (b) In the event the determination of entitlement to indemnification is to
be made by Independent Counsel pursuant to Section 12(a) hereof, the Independent Counsel shall be selected as provided in this Section 12(b). The Independent Counsel shall be selected by Indemnitee (unless Indemnitee shall request that
such selection be made by the Board), and Indemnitee shall give written notice to the Company advising it of the identity of the Independent Counsel so selected and certifying that the Independent Counsel so selected meets the requirements of
“Independent Counsel” as defined in Section 2 of this Agreement. If the Independent Counsel is selected by the Board, the Company shall give written notice to Indemnitee advising him or her of the identity of the Independent
Counsel so selected and certifying that the Independent Counsel so selected meets the requirements of “Independent Counsel” as defined in Section 2 of this Agreement. In either event, Indemnitee or the Company, as the case may
be, may, within ten (10) days after such written notice of selection shall have been received, deliver to the Company or to Indemnitee, as the case may be, a written objection to such selection; provided, however, that such objection may be
asserted only on the ground that the Independent Counsel so selected does not meet the requirements of “Independent Counsel” as defined in Section 2 of this Agreement, and the objection shall set forth with particularity the
factual basis of such assertion. Absent a proper and timely objection, the person so selected shall act as Independent Counsel. If such written objection is so made and substantiated, the Independent Counsel so selected may not serve as Independent
Counsel unless and until such objection is withdrawn or a court of competent jurisdiction has determined that such objection is without merit. If, within twenty (20) days after submission by Indemnitee of a written request for indemnification
pursuant to Section 11(b) hereof, no Independent Counsel shall have been selected and not objected to, either the Company or Indemnitee may petition the Delaware Court for resolution of any objection which shall have been made by the Company or
Indemnitee to the other’s selection of Independent Counsel and/or for the appointment as Independent Counsel of a person selected by the Delaware Court, and the person with respect to whom all objections are so resolved or the person so
appointed shall act as Independent Counsel under Section 12(a) hereof. Upon the due commencement of any judicial proceeding or arbitration pursuant to Section 14(a) of this Agreement, Independent Counsel shall be discharged and relieved of
any further responsibility in such capacity (subject to the applicable standards of professional conduct then prevailing). 

(c) The Company agrees to pay the reasonable fees and expenses of Independent Counsel and to fully indemnify and hold harmless
such Independent Counsel against any and all Expenses, claims, liabilities and damages arising out of or relating to this Agreement or its engagement pursuant hereto. 

13. PRESUMPTIONS AND EFFECT OF CERTAIN PROCEEDINGS. 

(a) (a) In making a determination with respect to entitlement to indemnification hereunder, the person, persons or entity
making such determination shall presume that Indemnitee is entitled to indemnification under this Agreement if Indemnitee has submitted a request for indemnification in accordance with Section 11(b) of this Agreement, and the Company shall have
the burden of proof to overcome that presumption in connection with the making by any person, persons or entity of any determination contrary to that presumption. Neither the failure of the Company (including by the Disinterested Directors or
Independent Counsel) to have made a determination prior to the commencement of any action pursuant to this Agreement that indemnification is proper in the circumstances because Indemnitee has met the applicable standard of conduct, nor an actual
determination by the Company (including by the Disinterested Directors or Independent Counsel) that Indemnitee has not met such applicable standard of conduct, shall be a defense to the action or create a presumption that Indemnitee has not met the
applicable standard of conduct. 
 (b) If the person, persons or entity empowered or selected under Section 12 of this
Agreement to determine whether Indemnitee is entitled to indemnification shall not have made a determination within thirty (30) days after receipt by the Company of the request therefor, the requisite determination of entitlement to
indemnification shall, to the fullest extent permitted by law, be deemed to have been made and Indemnitee shall be entitled to such indemnification, absent (i) a misstatement by Indemnitee of a material fact, or an omission of a material fact
necessary to make Indemnitee’s statement not materially misleading, in connection with the request for indemnification, or (ii) a final judicial determination that any or all such indemnification is expressly prohibited under applicable
law; provided, however, that such 30-day period may be extended for a reasonable time, not to exceed an additional fifteen (15) days, if the person, persons or entity making the determination with respect
to entitlement to indemnification in good faith requires such additional time for the obtaining or evaluating of documentation and/or information relating thereto. 












 (c) The termination of any Proceeding or of any claim, issue or matter
therein, by judgment, order, settlement or conviction, or upon a plea of nolo contendere or its equivalent, shall not (except as otherwise expressly provided in this Agreement) of itself adversely affect the right of Indemnitee to indemnification or
create a presumption that Indemnitee did not act in good faith and in a manner which he or she reasonably believed to be in or not opposed to the best interests of the Company or, with respect to any criminal Proceeding, that Indemnitee had
reasonable cause to believe that his or her conduct was unlawful. 
 (d) For purposes of any determination of good faith,
Indemnitee shall be deemed to have acted in good faith if Indemnitee’s action is based on the records or books of account of the Enterprise, including financial statements, or on information supplied to Indemnitee by the directors, manager, or
officers of the Enterprise in the course of their duties, or on the advice of legal counsel for the Enterprise, its Board, any committee of the Board or any director, trustee, general partner, manager or managing member, or on information or records
given or reports made to the Enterprise, its Board, any committee of the Board or any director, trustee, general partner, manager or managing member, by an independent certified public accountant or by an appraiser or other expert selected by the
Enterprise, its Board, any committee of the Board or any director, trustee, general partner, manager or managing member. The provisions of this Section 13(d) shall not be deemed to be exclusive or to limit in any way the other circumstances in
which Indemnitee may be deemed or found to have met the applicable standard of conduct set forth in this Agreement. 
 (e)
The knowledge and/or actions, or failure to act, of any other director, officer, trustee, partner, manager, managing member, fiduciary, agent or employee of the Enterprise shall not be imputed to Indemnitee for purposes of determining the right to
indemnification under this Agreement. 
 14. REMEDIES OF INDEMNITEE. 

(a) In the event that (i) a determination is made pursuant to Section 12 of this Agreement that Indemnitee is not
entitled to indemnification under this Agreement, (ii) advancement of Expenses, to the fullest extent permitted by applicable law, is not timely made pursuant to Section 10 of this Agreement, (iii) no determination of entitlement to
indemnification shall have been made pursuant to Section 12(a) of this Agreement within thirty (30) days after receipt by the Company of the request for indemnification, (iv) payment of indemnification is not made pursuant to Sections
5, 6, 7 or the last sentence of Section 12(a) of this Agreement within ten (10) days after receipt by the Company of a written request therefor, (v) a contribution payment is not made in a timely manner pursuant to Section 8 of
this Agreement, (vi) payment of indemnification pursuant to Section 3 or 4 of this Agreement is not made within ten (10) days after a determination has been made that Indemnitee is entitled to indemnification, or (vii) payment to
Indemnitee pursuant to any hold harmless or exoneration rights under this Agreement or otherwise is not made in accordance with this Agreement within ten (10) days after receipt by the Company of a written request therefor, Indemnitee shall be
entitled to an adjudication by the Delaware Court to such indemnification, hold harmless, exoneration, contribution or advancement rights. Alternatively, Indemnitee, at his or her option, may seek an award in arbitration to be conducted by a single
arbitrator pursuant to the Commercial Arbitration Rules and Mediation Procedures of the American Arbitration Association. Except as set forth herein, the provisions of Delaware law (without regard to its conflict of laws rules) shall apply to any
such arbitration. The Company shall not oppose Indemnitee’s right to seek any such adjudication or award in arbitration. 

(b) In the event that a determination shall have been made pursuant to Section 12(a) of this Agreement that Indemnitee is
not entitled to indemnification, any judicial proceeding or arbitration commenced pursuant to this Section 14 shall be conducted in all respects as a de novo trial, or arbitration, on the merits and Indemnitee shall not be prejudiced by reason
of that adverse determination. 












 (c) In any judicial proceeding or arbitration commenced pursuant to this
Section 14, Indemnitee shall be presumed to be entitled to be indemnified, held harmless, exonerated to receive advancement of Expenses under this Agreement and the Company shall have the burden of proving Indemnitee is not entitled to be
indemnified, held harmless, exonerated and to receive advancement of Expenses, as the case may be, and the Company may not refer to or introduce into evidence any determination pursuant to Section 12(a) of this Agreement adverse to Indemnitee
for any purpose. If Indemnitee commences a judicial proceeding or arbitration pursuant to this Section 14, Indemnitee shall not be required to reimburse the Company for any advances pursuant to Section 10 until a final determination is
made with respect to Indemnitee’s entitlement to indemnification (as to which all rights of appeal have been exhausted or lapsed). 

(d) If a determination shall have been made pursuant to Section 12(a) of this Agreement that Indemnitee is entitled to
indemnification, the Company shall be bound by such determination in any judicial proceeding or arbitration commenced pursuant to this Section 14, absent (i) a misstatement by Indemnitee of a material fact, or an omission of a material
fact necessary to make Indemnitee’s statement not materially misleading, in connection with the request for indemnification, or (ii) a prohibition of such indemnification under applicable law. 

(e) The Company shall be precluded from asserting in any judicial proceeding or arbitration commenced pursuant to this
Section 14 that the procedures and presumptions of this Agreement are not valid, binding and enforceable and shall stipulate in any such court or before any such arbitrator that the Company is bound by all the provisions of this Agreement. 

(f) The Company shall indemnify and hold harmless Indemnitee to the fullest extent permitted by law against all Expenses and,
if requested by Indemnitee, shall (within ten (10) days after the Company’s receipt of such written request) pay to Indemnitee, to the fullest extent permitted by applicable law, such Expenses which are incurred by Indemnitee in connection
with any judicial proceeding or arbitration brought by Indemnitee: (i) to enforce his or her rights under, or to recover damages for breach of, this Agreement or any other indemnification, hold harmless, exoneration, advancement or contribution
agreement or provision of the Charter, or the Bylaws now or hereafter in effect; or (ii) for recovery or advances under any insurance policy maintained by any person for the benefit of Indemnitee, regardless of the outcome and whether
Indemnitee ultimately is determined to be entitled to such indemnification, hold harmless or exoneration right, advancement, contribution or insurance recovery, as the case may be (unless such judicial proceeding or arbitration was not brought by
Indemnitee in good faith). 
 (g) Interest shall be paid by the Company to Indemnitee at the legal rate under Delaware law
for amounts which the Company indemnifies, holds harmless or exonerates, or advances, or is obliged to indemnify, hold harmless or exonerate or advance for the period commencing with the date on which Indemnitee requests indemnification, to be held
harmless, exonerated, contribution, reimbursement or advancement of any Expenses and ending with the date on which such payment is made to Indemnitee by the Company. 

15. SECURITY. Notwithstanding anything herein to the contrary, except for Section 27, to the extent requested by Indemnitee and
approved by the Board, the Company may at any time and from time to time provide security to Indemnitee for the Company’s obligations hereunder through an irrevocable bank line of credit, funded trust or other collateral. Any such security,
once provided to Indemnitee, may not be revoked or released without the prior written consent of Indemnitee. 
 16. NON-EXCLUSIVITY; SURVIVAL OF RIGHTS; INSURANCE; SUBROGATION. 
 (a) The rights of
Indemnitee as provided by this Agreement shall not be deemed exclusive of any other rights to which Indemnitee may at any time be entitled under applicable law, the Charter, the Bylaws, any agreement, a vote of stockholders or a resolution of
directors, or otherwise. No amendment, alteration or repeal of this Agreement or of any provision hereof shall limit or restrict any right of Indemnitee under this Agreement in respect of any Proceeding (regardless of when such Proceeding is first
threatened, commenced or completed) or claim, issue or matter therein arising out of, or related to, any action taken or omitted by such Indemnitee in his or her Corporate Status prior to such amendment, alteration or repeal. To the extent that a
change in applicable law, whether by statute or judicial decision, permits greater indemnification, hold harmless or exoneration rights or advancement of Expenses than would be afforded currently under the Charter, the Bylaws or this Agreement, it
is the intent of the parties hereto that Indemnitee shall enjoy by this 












 
Agreement the greater benefits so afforded by such change. No right or remedy herein conferred is intended to be exclusive of any other right or remedy, and every other right and remedy shall be
cumulative and in addition to every other right and remedy given hereunder or now or hereafter existing at law or in equity or otherwise. The assertion or employment of any right or remedy hereunder, or otherwise, shall not prevent the concurrent
assertion or employment of any other right or remedy. 
 (b) The DGCL, the Charter and the Bylaws permit the Company to
purchase and maintain insurance or furnish similar protection or make other arrangements including, but not limited to, providing a trust fund, letter of credit, or surety bond (“Indemnification Arrangements”) on behalf of
Indemnitee against any liability asserted against him or her or incurred by or on behalf of him or her or in such capacity as a director, officer, employee or agent of the Company, or arising out of his or her status as such, whether or not the
Company would have the power to indemnify him or her against such liability under the provisions of this Agreement or under the DGCL, as it may then be in effect. The purchase, establishment, and maintenance of any such Indemnification Arrangement
shall not in any way limit or affect the rights and obligations of the Company or of Indemnitee under this Agreement except as expressly provided herein, and the execution and delivery of this Agreement by the Company and Indemnitee shall not in any
way limit or affect the rights and obligations of the Company or the other party or parties thereto under any such Indemnification Arrangement. 

(c) To the extent that the Company maintains an insurance policy or policies providing liability insurance for directors,
officers, trustees, partners, managers, managing members, fiduciaries, employees, or agents of the Company or of any other Enterprise which such person serves at the request of the Company, Indemnitee shall be covered by such policy or policies in
accordance with its or their terms to the maximum extent of the coverage available for any such director, officer, trustee, partner, manager, managing member, fiduciary, employee or agent under such policy or policies. If, at the time the Company
receives notice from any source of a Proceeding as to which Indemnitee is a party or a participant (as a witness, deponent or otherwise), the Company has director and officer liability insurance in effect, the Company shall give prompt notice of
such Proceeding to the insurers in accordance with the procedures set forth in the respective policies. The Company shall thereafter use commercially reasonable efforts to cause such insurers to pay, on behalf of Indemnitee, all amounts payable as a
result of such Proceeding in accordance with the terms of such policies. 
 (d) In the event of any payment under this
Agreement, the Company, to the fullest extent permitted by law, shall be subrogated to the extent of such payment to all of the rights of recovery of Indemnitee, who shall execute all papers required and take all action necessary to secure such
rights, including execution of such documents as are necessary to enable the Company to bring suit to enforce such rights. No such payment by the Company shall be deemed to relieve any insurer of its obligations. 

(e) The Company’s obligation to indemnify, hold harmless, exonerate or advance Expenses hereunder to Indemnitee who is or
was serving at the request of the Company as a director, officer, trustee, partner, manager, managing member, fiduciary, employee or agent of any other Enterprise shall be reduced by any amount Indemnitee has actually received as indemnification,
hold harmless or exoneration payments or advancement of expenses from such Enterprise. Notwithstanding any other provision of this Agreement to the contrary except for Section 27, (i) Indemnitee shall have no obligation to reduce, offset,
allocate, pursue or apportion any indemnification, hold harmless, exoneration, advancement, contribution or insurance coverage among multiple parties possessing such duties to Indemnitee prior to the Company’s satisfaction and performance of
all its obligations under this Agreement, and (ii) the Company shall perform fully its obligations under this Agreement without regard to whether Indemnitee holds, may pursue or has pursued any indemnification, advancement, hold harmless,
exoneration, contribution or insurance coverage rights against any person or entity other than the Company. 
 (f)
Notwithstanding anything contained herein, the Company is the primary indemnitor, and any indemnification or advancement obligation of the Sponsor or its affiliates or members or any other Person is secondary. 












 17. DURATION OF AGREEMENT. All agreements and obligations of the Company contained
herein shall continue during the period Indemnitee serves as a director or officer of the Company or as a director, officer, trustee, partner, manager, managing member, fiduciary, employee or agent of any other corporation, partnership, joint
venture, trust, employee benefit plan or other Enterprise which Indemnitee serves at the request of the Company and shall continue thereafter so long as Indemnitee shall be subject to any possible Proceeding (including any rights of appeal thereto
and any Proceeding commenced by Indemnitee pursuant to Section 14 of this Agreement) by reason of his or her Corporate Status, whether or not he or she is acting in any such capacity at the time any liability or expense is incurred for which
indemnification or advancement can be provided under this Agreement. 
 18. SEVERABILITY. If any provision or provisions of this
Agreement shall be held to be invalid, illegal or unenforceable for any reason whatsoever: (a) the validity, legality and enforceability of the remaining provisions of this Agreement (including, without limitation, each portion of any Section,
paragraph or sentence of this Agreement containing any such provision held to be invalid, illegal or unenforceable, that is not itself invalid, illegal or unenforceable) shall not in any way be affected or impaired thereby and shall remain
enforceable to the fullest extent permitted by law; (b) such provision or provisions shall be deemed reformed to the extent necessary to conform to applicable law and to give the maximum effect to the intent of the parties hereto; and
(c) to the fullest extent possible, the provisions of this Agreement (including, without limitation, each portion of any Section, paragraph or sentence of this Agreement containing any such provision held to be invalid, illegal or
unenforceable, that is not itself invalid, illegal or unenforceable) shall be construed so as to give effect to the intent manifested thereby. 

19. ENFORCEMENT AND BINDING EFFECT. 

(a) The Company expressly confirms and agrees that it has entered into this Agreement and assumed the obligations imposed on it
hereby in order to induce Indemnitee to serve as a director, officer or key employee of the Company, and the Company acknowledges that Indemnitee is relying upon this Agreement in serving as a director, officer or key employee of the Company. 

(b) Without limiting any of the rights of Indemnitee under the Charter or Bylaws of the Company as they may be amended from
time to time, this Agreement constitutes the entire agreement between the parties hereto with respect to the subject matter hereof and supersedes all prior agreements and understandings, oral, written and implied, between the parties hereto with
respect to the subject matter hereof. 
 (c) The indemnification, hold harmless, exoneration and advancement of expenses
rights provided by or granted pursuant to this Agreement shall be binding upon and be enforceable by the parties hereto and their respective successors and assigns (including any direct or indirect successor by purchase, merger, consolidation or
otherwise to all or substantially all of the business and/or assets of the Company), shall continue as to an Indemnitee who has ceased to be a director, officer, employee or agent of the Company or a director, officer, trustee, general partner,
manager, managing member, fiduciary, employee or agent of any other Enterprise at the Company’s request, and shall inure to the benefit of Indemnitee and his or her spouse, assigns, heirs, devisees, executors and administrators and other legal
representatives. 
 (d) The Company shall require and cause any successor (whether direct or indirect by purchase, merger,
consolidation or otherwise) to all, substantially all or a substantial part, of the business and/or assets of the Company, by written agreement in form and substance satisfactory to Indemnitee, expressly to assume and agree to perform this Agreement
in the same manner and to the same extent that the Company would be required to perform if no such succession had taken place. 

(e) The Company and Indemnitee agree herein that a monetary remedy for breach of this Agreement, at some later date, may be
inadequate, impracticable and difficult of proof, and further agree that such breach may cause Indemnitee irreparable harm. Accordingly, the parties hereto agree that Indemnitee may, to the fullest extent permitted by law, enforce this Agreement by
seeking, among other things, injunctive relief and/or specific performance hereof, without any necessity of showing actual damage or irreparable harm and that by seeking injunctive relief and/or specific performance, Indemnitee shall not be
precluded from seeking or obtaining any other relief to which he or she may be entitled. The Company and Indemnitee further agree that Indemnitee shall, to the fullest extent permitted by law, be entitled to such specific performance and injunctive
relief, including temporary restraining orders, preliminary injunctions and 












 
permanent injunctions, without the necessity of posting bonds or other undertaking in connection therewith. The Company acknowledges that in the absence of a waiver, a bond or undertaking may be
required of Indemnitee by a court of competent jurisdiction, and the Company hereby waives any such requirement of such a bond or undertaking to the fullest extent permitted by law. 

20. MODIFICATION AND WAIVER. No supplement, modification or amendment of this Agreement shall be binding unless executed in writing by
the Company and Indemnitee. No waiver of any of the provisions of this Agreement shall be deemed or shall constitute a waiver of any other provisions of this Agreement nor shall any waiver constitute a continuing waiver. 

21. NOTICES. All notices, requests, demands and other communications under this Agreement shall be in writing and shall be deemed to
have been duly given (i) if delivered by hand and receipted for by the party to whom said notice or other communication shall have been directed, on such delivery, or (ii) if mailed by certified or registered mail with postage prepaid, on
the third (3rd) business day after the date on which it is so mailed: 
 (a) If to Indemnitee, at the address indicated on
the signature page of this Agreement, or such other address as Indemnitee shall provide in writing to the Company. 
 (b) If
to the Company, to: 
 AltEnergy Acquisition Corp. 

600 Lexington Avenue, 9th Floor 

New York, NY 10022 

Attention: Russell Stidolph 

With a copy, which shall not constitute notice, to 

Morrison Cohen LLP 

909 Third Avenue 

New York, NY 10022 

Attn: Jack Levy, Esq. and Anthony M. Saur, Esq. 

Fax No.: (212) 735-8708 

or to any other address as may have been furnished to Indemnitee in writing by the Company. 

22. APPLICABLE LAW AND CONSENT TO JURISDICTION. This Agreement and the legal relations among the parties shall be governed by, and
construed and enforced in accordance with, the laws of the State of Delaware, without regard to its conflict of laws rules. Except with respect to any arbitration commenced by Indemnitee pursuant to Section 14(a) of this Agreement, to the
fullest extent permitted by law, the Company and Indemnitee hereby irrevocably and unconditionally: (a) agree that any action or proceeding arising out of or in connection with this Agreement shall be brought only in the Delaware Court and not
in any other state or federal court in the United States of America or any court in any other country; (b) consent to submit to the exclusive jurisdiction of the Delaware Court for purposes of any action or proceeding arising out of or in
connection with this Agreement; (c) waive any objection to the laying of venue of any such action or proceeding in the Delaware Court; and (d) waive, and agree not to plead or to make, any claim that any such action or proceeding brought
in the Delaware Court has been brought in an improper or inconvenient forum, or is subject (in whole or in part) to a jury trial. To the fullest extent permitted by law, the parties hereby agree that the mailing of process and other papers in
connection with any such action or proceeding in the manner provided by Section 21 or in such other manner as may be permitted by law, shall be valid and sufficient service thereof. 

23. IDENTICAL COUNTERPARTS. This Agreement may be executed in one or more counterparts, each of which shall for all purposes be deemed
to be an original but all of which together shall constitute one and the same Agreement. Only one such counterpart signed by the party against whom enforceability is sought needs to be produced to evidence the existence of this Agreement. 












 24. MISCELLANEOUS. The headings of the paragraphs of this Agreement are inserted for
convenience only and shall not be deemed to constitute part of this Agreement or to affect the construction thereof. 
 25. PERIOD OF
LIMITATIONS. No legal action shall be brought and no cause of action shall be asserted by or in the right of the Company against Indemnitee, Indemnitee’s spouse, heirs, executors or personal or legal representatives after the expiration of
two years from the date of accrual of such cause of action, and any claim or cause of action of the Company shall be extinguished and deemed released unless asserted by the timely filing of a legal action within such
two-year period; provided, however, that if any shorter period of limitations is otherwise applicable to any such cause of action such shorter period shall govern. 

26. ADDITIONAL ACTS. If for the validation of any of the provisions in this Agreement any act, resolution, approval or other procedure
is required to the fullest extent permitted by law, the Company undertakes to cause such act, resolution, approval or other procedure to be affected or adopted in a manner that will enable the Company to fulfill its obligations under this Agreement.

 27. WAIVER OF CLAIMS TO TRUST ACCOUNT. Notwithstanding anything contained herein to the contrary, Indemnitee hereby agrees that it
does not have any right, title, interest or claim of any kind (each, a “Claim”) in or to any monies in the trust account established in connection with the Company’s initial public offering for the benefit of the Company and
holders of shares issued in such offering, and hereby waives any Claim it may have in the future as a result of, or arising out of, any services provided to the Company and will not seek recourse against such trust account for any reason whatsoever.
Accordingly, Indemnitee acknowledges and agrees that any indemnification provided hereto will only be able to be satisfied by the Company if (i) the Company has sufficient funds outside of the trust account to satisfy its obligations hereunder
or (ii) the Company consummates a Business Combination. 
 28. MAINTENANCE OF INSURANCE. The Company shall use commercially
reasonable efforts to obtain and maintain in effect during the entire period for which the Company is obligated to indemnify Indemnitee under this Agreement, one or more policies of insurance with reputable insurance companies to provide the
officers/directors of the Company with coverage for losses from wrongful acts and omissions and to ensure the Company’s performance of its indemnification obligations under this Agreement. Indemnitee shall be covered by such policy or policies
in accordance with its or their terms to the maximum extent of the coverage available for any such director or officer under such policy or policies. In all such insurance policies, Indemnitee shall be named as an insured in such a manner as to
provide Indemnitee with the same rights and benefits as are accorded to the most favorably insured of the Company’s directors and officers. 

[Signature Page Follows] 












 IN WITNESS WHEREOF, the parties hereto have caused this Indemnity Agreement to be
signed as of the day and year first above written. 
  

			
	ALTENERGY ACQUISITION CORP.
		
	By:	 	 /s/ Russell Stidolph

	Name:	 	Russell Stidolph
	Title:	 	Chief Executive Officer
	
	INDEMNITEE
		
	By:	 	 /s/ Arul Gupta

	Name:	 	Arul Gupta
	Title:	 	Chief Operations Officer



  
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