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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 14A

Proxy Statement Pursuant to Section 14(a) of the Securities
Exchange Act of 1934 (Amendment No.            )

þ    Filed by the Registrant         ☐    Filed by a Party other than the Registrant

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FuelCell Energy, Inc.

(Name of Registrant as Specified In Its Charter)

(Name of Person(s) Filing Proxy Statement, if other than the Registrant)

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Notice of
Special Meeting &
Proxy Statement

VIRTUAL SPECIAL MEETING | October 10, 2023

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Dear Fellow FuelCell Energy Stockholder

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Dear Fellow FuelCell Energy Stockholder

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“YOUR VOTE IS VERY IMPORTANT. WE ENCOURAGE YOU TO
VOTE YOUR SHARES BY PROXY EVEN IF YOU DO NOT
PLAN TO ATTEND THE MEETING. THANK YOU.”

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Notice of Special Meeting of Stockholders

MEETING INFORMATION

October 10, 2023

1:00 p.m. Eastern Daylight Time

The Special Meeting of Stockholders will be a completely “virtual meeting”, conducted via live audio webcast on the Internet. You will be able to attend the Special Meeting as well as vote and submit your questions during the live audio webcast of the meeting by visiting www.virtualshareholdermeeting.com/FCEL2023SM and entering the 16-digit control number included in our notice of internet availability of the proxy materials, on your proxy card or in the instructions that accompanied your proxy materials.

ITEMS OF BUSINESS

RECORD DATE

Holders of record of our common stock on August 14, 2023, the record date, are entitled to notice of, and to vote at, the Special Meeting.

MATERIALS TO REVIEW

This booklet contains our Notice of Special Meeting and Proxy Statement, which fully describes the business we will conduct at the Special Meeting.

PROXY VOTING

It is important that your shares are represented and voted at the Special Meeting. Please vote your shares according to the instructions under “How to Vote” in the Proxy Summary.

ADMISSION TO THE SPECIAL MEETING

To attend the Special Meeting, please follow the “Meeting Attendance” instructions in the Proxy Summary.

By Order of the Board of Directors,

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JOSHUA DOLGER

Executive Vice President, General Counsel,

and Corporate Secretary

August 22, 2023

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Important Notice Regarding the Availability of Proxy Materials for the Special Meeting of Stockholders to be held on October 10, 2023: The Notice of Special Meeting and Proxy Statement are available at www.proxyvote.com (using the 16-digit control number included in our notice of internet availability of proxy materials, on your proxy card or in the instructions that accompanied your proxy materials), as well as on our website at www.fuelcellenergy.com.

If you need assistance in completing your proxy card or have questions regarding the Special Meeting, please contact Alliance Advisors, LLC, the proxy solicitation agent for FuelCell Energy, Inc., by telephone at (888) 490-5067 (toll free) or by email at fcel@allianceadvisors.com.

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Proxy Statement

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FuelCell Energy, Inc., a Delaware corporation (referred to in this Proxy Statement as “we,” “FuelCell”, “FuelCell Energy” or the “Company”), is providing you with this Proxy Statement in connection with the solicitation by FuelCell’s Board of Directors (the “Board”) of proxies to be voted at FuelCell’s Special Meeting of Stockholders (the “Special Meeting”) and at any adjournment or postponement thereof. The Special Meeting will be a completely “virtual meeting” of stockholders to be held on October 10, 2023 at 1:00 p.m. Eastern Daylight Time. You will be able to attend the Special Meeting as well as vote and submit your questions during the live audio webcast of the meeting by visiting www.virtualshareholdermeeting.com/FCEL2023SM and entering the 16-digit control number included in our notice of internet availability of the proxy materials, on your proxy card or in the instructions that accompanied your proxy materials. The address of our principal executive office is 3 Great Pasture Road, Danbury, Connecticut 06810.

The Board has set the close of business on August 14, 2023 as the record date for the determination of holders of the Company’s common stock, par value $0.0001 per share, who are entitled to notice of, and to vote at, the Special Meeting.

As of August 14, 2023, there were 450,144,264 shares of common stock outstanding and entitled to vote at the Special Meeting. Holders of common stock outstanding at the close of business on the record date will be entitled to one vote for each share held on the record date.

We are providing access to our proxy materials online under the U.S. Securities and Exchange Commission’s “notice and access” rules. As a result, we are mailing to many of our stockholders a notice instead of a paper copy of this Proxy Statement. The notice contains instructions on how to access documents online. The notice also contains instructions on how stockholders can receive a paper copy of our materials, including this Proxy Statement and a form of proxy card or voting instruction card. Those who do not receive a notice, including stockholders who have previously requested to receive paper copies of proxy materials, will receive a paper copy of the Proxy Statement by mail unless they have previously requested delivery of materials electronically.

The Notice of Special Meeting, Proxy Statement and proxy card are first being distributed and made available to our stockholders on or about August 22, 2023.

Important Notice Regarding the Availability of Proxy Materials for the Special Meeting of Stockholders to be held on October 10, 2023: The Notice of Special Meeting and Proxy Statement are available at www.proxyvote.com (using the 16-digit control number included in our notice of internet availability of proxy materials, on your proxy card or in the instructions that accompanied your proxy materials), as well as on our website at www.fuelcellenergy.com.

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Proxy Summary

This summary highlights selected information contained throughout this Proxy Statement. Please read the entire Proxy Statement before casting your vote.

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ELIGIBILITY TO VOTE

Holders of record of our common stock at the close of business on August 14, 2023, the record date, are entitled to vote at the Special Meeting of Stockholders.

HOW TO VOTE

You may submit your proxy or vote using any one of the following methods. In all cases, you should have your 16-digit control number from your proxy card or notice available and follow the instructions. Proxies submitted online or via telephone prior to the commencement of the Special Meeting will be accepted until 11:59 p.m. (EDT) on October 9, 2023. See “Meeting Attendance” below for instructions on how you may vote your shares electronically during the Special Meeting.

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MEETING INFORMATION

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MEETING ATTENDANCE

The Special Meeting will be held entirely online to allow greater participation. Stockholders may participate in the Special Meeting by visiting the following website www.virtualshareholdermeeting.com/FCEL2023SM. To participate in the Special Meeting, you will need the 16-digit control number included on your notice, on your proxy card or on the instructions that accompanied your proxy materials. Shares held in your name as the stockholder of record may be voted electronically during the Special Meeting. Shares for which you are the beneficial owner but not the stockholder of record may also be voted electronically during the Special Meeting. However, even if you plan to attend the virtual Special Meeting, the Company recommends that you submit your proxy in advance, so that your vote will be counted if you later decide not to attend the Special Meeting.

You are entitled to attend the virtual Special Meeting only if you were a stockholder as of the record date for this Special Meeting, which was August 14, 2023, or you hold a valid proxy for the Special Meeting. If you were a stockholder as of the record date, you may attend

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the Special Meeting, vote and submit a question during the Special Meeting by visiting www.virtualshareholdermeeting.com/FCEL2023SM and using your 16-digit control number to enter the Special Meeting.

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STOCKHOLDER VOTING MATTERS

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COMPANY PROFILE

Headquartered in Danbury, Connecticut, FuelCell Energy has leveraged five decades of research and development to become a global leader in delivering environmentally responsible, distributed baseload energy platform solutions through our proprietary fuel cell technology. Our current commercial technology produces electricity, heat, hydrogen and water while separating carbon for utilization and/or sequestration. We continue to invest in developing and commercializing future technologies expected to add new capabilities to our platforms’ abilities to deliver hydrogen and long duration hydrogen-based energy storage through our solid oxide technologies, as well as further enhance our existing platforms’ carbon capture solutions.

FuelCell Energy is a global leader in sustainable clean energy technologies that address some of the world’s most critical challenges around energy access, security, safety and environmental stewardship. As a leading global manufacturer of proprietary fuel cell technology platforms, FuelCell Energy is uniquely positioned to serve customers worldwide with sustainable products and solutions for industrial and commercial businesses, utilities, governments and municipalities.

Visit us online at www.fuelcellenergy.com and follow us on Twitter @FuelCell_Energy.

Websites

Links to websites included in this Proxy Statement are provided solely for convenience. Information contained on websites, including on our website, is not, and will not be deemed to be, a part of or incorporated by reference into this Proxy Statement or any of our other filings with the Securities and Exchange Commission (the “SEC”).

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Forward-Looking Statements

This Proxy Statement includes forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995, including, but not limited to, statements regarding our plans and expectations with respect to the continuing development and commercialization of our current and future fuel cell technologies, the potential uses of additional authorized shares of common stock (if the Increase Authorized Shares Proposal is approved), the potential impacts and effects of the approval by the stockholders of the Increase Authorized Shares Proposal and the potential impacts and effects of the failure of the stockholders to approve the Increase Authorized Shares Proposal. Forward-looking statements are not guarantees of future performance and are subject to risks and uncertainties that could cause actual results to differ materially from those expressed or implied by the forward-looking statements. Factors that could cause such a difference are disclosed in the section entitled “Risk Factors” in our Annual Report on Form 10-K for the fiscal year ended October 31, 2022, our Quarterly Report on Form 10-Q for the fiscal quarter ended April 30, 2023, and subsequent Quarterly Reports on Form 10-Q. Stockholders, potential investors and others should consider these factors in evaluating the forward-looking statements and should not place undue reliance on such statements. The forward-looking statements included in this Proxy Statement are made only as of the date of this document, unless otherwise specified, and, except as required by law, we assume no obligation, and disclaim any obligation, to update such statements to reflect events or circumstances occurring after the date of this Proxy Statement.

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SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT

The following table sets forth certain information as of August 14, 2023 with respect to: (a) each of our directors; (b) each of our named executive officers named in the Fiscal Year 2022 Summary Compensation Table on page 52 of our Definitive Proxy Statement filed with the SEC on February 17, 2023; (c) all of our directors and executive officers as a group; and (d) the stockholders known to us who beneficially own more than five percent of the outstanding common stock of the Company.

We have determined beneficial ownership in accordance with the rules of the SEC. Except as indicated by the footnotes below, we believe, based on the information furnished to us, that the persons and entities named in the table below have sole voting and dispositive power with respect to all shares of common stock they beneficially own. Applicable percentage ownership is based on 450,144,264 shares of common stock outstanding on August 14, 2023. In computing the number of shares of common stock beneficially owned by a person and the applicable percentage ownership of that person, we deemed outstanding all shares of common stock subject to options held by that person that are currently exercisable or exercisable within 60 days of August 14, 2023 and all shares of common stock issuable upon the vesting of restricted stock units within 60 days of August 14, 2023. We did not deem these shares outstanding, however, for the purpose of computing the percentage ownership of any other person. Beneficial ownership representing less than one percent is denoted with an asterisk (“*”).

Unless indicated otherwise, the address of each holder is in care of FuelCell Energy, Inc., 3 Great Pasture Road, Danbury, CT 06810.

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Proposal 1

The Increase Authorized Shares Proposal

General Description of Proposal

The Board believes that it is advisable and in the best interests of the Company and our stockholders to amend the Certificate of Incorporation of the Company, as amended (the “Certificate”), to increase the number of authorized shares of common stock of the Company from 500,000,000 shares to 1,000,000,000 shares. Accordingly, subject to stockholder approval (which we are hereby seeking), the Board has approved and declared advisable a proposed amendment to the Certificate that increases the number of authorized shares of common stock from 500,000,000 shares to 1,000,000,000 shares, which, when combined with the existing authorized preferred stock, results in total authorized shares of 1,000,250,000. The form of the proposed amendment is attached as Annex A to this Proxy Statement. The discussion below is qualified in its entirety by reference to the actual text of the proposed amendment as set forth in Annex A. An increase in the number of authorized shares alone will not have a dilutive effect on the ownership percentage of our existing common stockholders; only the actual issuance of additional common stock would have such an effect.

This proposal is referred to in this Proxy Statement as the “Increase Authorized Shares Proposal” or “Proposal 1.”

Current Capitalization

As of August 14, 2023, we were authorized to issue up to 500,000,000 shares of common stock, 450,144,264 shares of our common stock were issued and outstanding, and, as described in the table below, 49,215,123 shares of our common stock were reserved for issuance.

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In addition to the authorized shares of common stock, the Company is authorized to issue up to 250,000 shares of preferred stock, par value $0.01 per share, in one or more series designated by our Board, of which 105,875 shares have been designated as 5% Series B Cumulative Convertible Perpetual Preferred Stock (“Series B Preferred Stock”). Pursuant to the Certificate, our undesignated shares of

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preferred stock include all of our shares of preferred stock that were previously designated as Series C Convertible Preferred Stock and Series D Convertible Preferred Stock, as all such shares have been retired and therefore have the status of authorized and unissued shares of preferred stock undesignated as to series. On August 14, 2023, 64,020 shares of Series B Preferred Stock were issued and outstanding. Neither the number of shares of preferred stock that the Company is authorized to issue, nor the preferences, rights or other characteristics of any preferred stock, would be changed by this Increase Authorized Shares Proposal.

Purpose of the Amendment

The Board is recommending the increase in authorized shares of common stock for future corporate needs. The Board believes that these additional shares will provide the Company with needed flexibility to issue shares in the future to take advantage of market conditions or favorable opportunities without the potential expense or delay incident to obtaining stockholder approval for a particular issuance. The 640,613 shares of common stock available for issuance (after taking into account the number of shares of common stock that are outstanding and reserved) as of August 14, 2023 represent approximately 0.13 percent of the 500,000,000 shares of common stock we are authorized to issue under the Certificate. If this Increase Authorized Shares Proposal is approved and the proposed amendment to the Certificate is filed and becomes effective, the number of authorized shares and the number of shares available for issuance will increase by 500,000,000 shares, resulting in 500,640,613 shares of common stock available for issuance, after taking into account the 49,215,123 shares of common stock reserved for issuance as of August 14, 2023. The 500,640,613 shares of common stock that would be available for issuance represent approximately 50.06 percent of the 1,000,000,000 shares of common stock that would be authorized for issuance.

Shares authorized may be issued by the Board in its discretion, subject to any further stockholder action required in the case of any particular issuance by applicable law, by regulatory agency, or under the rules of The Nasdaq Stock Market or any stock exchange on which our common stock may then be listed. The newly authorized shares of common stock would be issuable for any proper corporate purpose, including, but not limited to, future acquisitions, investment opportunities, raising capital for commercialization of our advanced technologies, project advancement and financing, the establishment of collaboration or other strategic agreements, capital raising transactions utilizing equity or convertible debt securities, future at the market or other offerings of common stock, stock splits, stock dividends, issuance under current or future employee stock purchase plans or employee equity plans or for other corporate purposes. Currently, there are no immediate plans, arrangements, commitments or understandings with respect to the issuance of any of the additional shares of common stock which would be authorized by the proposed amendment to the Certificate described in this Increase Authorized Shares Proposal.

Rights of Additional Authorized Shares

The additional authorized shares of common stock, when issued, would be part of the existing class of common stock and would have the same rights and privileges as the shares of common stock presently outstanding. Holders of shares of our common stock (solely in their capacity as holders of shares of our common stock) have no preemptive rights or rights to convert their shares of our common stock into any other securities. Accordingly, should the Board elect to issue additional shares of our common stock, existing holders of shares of our common stock would not have any preferential rights to purchase the shares.

Potential Adverse Effects of the Amendment

Future issuance of common stock or securities convertible into our common stock could have a dilutive effect on the earnings per share, book value per share, voting power and percentage interest of holdings of current stockholders. In addition, the availability of additional shares of our common stock for issuance could, under certain circumstances, discourage or make more difficult efforts to obtain control of the Company under a possible take-over scenario. The Board is not aware of any attempt, or contemplated attempt, to acquire control of the Company. This Increase Authorized Shares Proposal is not being presented with the intent that it be used to prevent or discourage any acquisition attempt, but nothing would prevent the Board from taking any appropriate actions not inconsistent with its fiduciary duties.

Effectiveness of the Amendment

If the proposed amendment to the Certificate described in this Increase Authorized Shares Proposal is approved by our stockholders, it will become effective upon the filing of a Certificate of Amendment of the Certificate of the Company with the Secretary of State of the State of Delaware. The form of such Certificate of Amendment is attached as Annex A to this Proxy Statement.

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Risks to Stockholders of Non-Approval

If the proposed amendment to the Certificate described in this Increase Authorized Shares Proposal is not approved by our stockholders, it will impede the Company’s ability to raise equity capital should the need arise. If the Company is not able to raise equity capital, it may cause the loss of significant business opportunities, prevent the commercialization of our advanced technologies or completion of projects and limit our ability to execute on our business plan, any of which could adversely affect our financial performance, growth and ability to continue our operations. The Board is not aware of any attempt, or contemplated attempt, to acquire control of the Company, and the Board does not intend or view the proposed increase in authorized common stock to be an anti-takeover measure.

Vote Required

Approval of this Increase Authorized Shares Proposal requires the affirmative vote of the holders of a majority of the shares of our common stock casting votes in person (online during the virtual meeting) or by proxy on such proposal at the Special Meeting. This means that this Increase Authorized Shares Proposal will be approved if the votes cast “FOR” the proposal exceed the votes cast “AGAINST” the proposal. This Increase Authorized Shares Proposal is a “routine” matter under New York Stock Exchange (“NYSE”) Rule 452 on which brokers may vote without instruction from beneficial owners. Therefore, we do not expect there to be any broker non-votes with respect to this proposal, however, if there are any broker non-votes, they will not be counted as votes cast and they will have no effect on the vote on this proposal. Abstentions are not counted as votes cast and will have no effect on the vote on this proposal.

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Proposal 2

The Adjournment Proposal

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Our Board is asking our stockholders to approve one or more adjournments of the Special Meeting, if necessary, to solicit additional proxies if there are not sufficient votes in favor of the Increase Authorized Shares Proposal (also referred to herein as Proposal 1). This proposal is referred to in this Proxy Statement as the “Adjournment Proposal” or “Proposal 2.” Under our second amended and restated by-laws, the chair of the Special Meeting also has the power to adjourn the Special Meeting, whether or not a quorum is present.

Approval of this Adjournment Proposal requires the affirmative vote of a majority of the votes entitled to be cast on the proposal by the stockholders who are present in person (by virtual presence online) or represented by proxy at the Special Meeting, whether or not a quorum is present. This Adjournment Proposal is a “routine” matter under NYSE Rule 452 on which brokers may vote without instruction from beneficial owners. Therefore, we do not expect there to be any broker non-votes with respect to this proposal. Abstentions will have the effect of a vote “AGAINST” this proposal.

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ADDITIONAL INFORMATION AND OTHER MATTERS

GENERAL

Holders of the Company’s common stock as of the close of business on August 14, 2023 (the “Record Date”) are entitled to notice of, and to vote at, the Special Meeting or any adjournments thereof. As of the Record Date, there were 450,144,264 shares of the Company’s common stock issued and outstanding. Each holder of the Company’s common stock is entitled to one vote for each share held on the Record Date, including common stock:

STOCKHOLDER PROPOSALS FOR THE 2024 ANNUAL MEETING

If any stockholder wishes to propose a matter for consideration at our 2024 Annual Meeting of Stockholders, the proposal should be mailed by certified mail return receipt requested, to our Corporate Secretary at FuelCell Energy, Inc., Office of the Corporate Secretary, 3 Great Pasture Road, Danbury, CT 06810. To be eligible under the SEC’s stockholder proposal rule (Rule 14a-8(e) of the Exchange Act) for inclusion in our 2024 Annual Meeting Proxy Statement and form of proxy, a proposal must be received by our Corporate Secretary on or before October 20, 2023. Failure to deliver a proposal in accordance with this procedure may result in it not being deemed timely received.

In addition, our second amended and restated by-laws permit stockholders to nominate directors and present other business for consideration at our Annual Meeting of Stockholders. To make a director nomination or present other business for consideration at the Annual Meeting of Stockholders to be held in 2024, you must submit a timely notice in accordance with the procedures described in our second amended and restated by-laws. To be timely, a stockholder’s notice shall be delivered to the Corporate Secretary at the principal executive offices of our Company not less than 90 days nor more than 120 days prior to the one-year anniversary of the immediately preceding year’s annual meeting. Therefore, to be presented at our Annual Meeting to be held in 2024, such a proposal must be received on or after December 8, 2023, but not later than January 7, 2024. In the event that the date of the Annual Meeting of Stockholders to be held in 2024 is advanced by more than 30 days, or delayed by more than 60 days, from the anniversary date of this year’s Annual Meeting of Stockholders, such notice by the stockholder must be so received no earlier than the 120th day prior to the Annual Meeting of Stockholders to be held in 2024 and not later than the 90th day prior to such Annual Meeting of Stockholders to be held in 2024 or, if later, the 10th day following the day on which public disclosure of the date of such Annual Meeting is first made. Any such proposal will be considered timely only if it is otherwise in compliance with the requirements set forth in our second amended and restated by-laws. In addition, stockholders who intend to solicit proxies in support of director nominees other than the Company’s nominees must also comply with the additional requirements of SEC Rule 14a-19(b).

HOUSEHOLDING

Individual stockholders sharing an address with one or more other stockholders may elect to “household” the mailing of the proxy statement, or the notice of internet availability of proxy materials, as applicable. This means that only one proxy statement or notice will be sent to that address unless one or more stockholders at that address specifically elect to receive separate mailings. Stockholders who participate in householding will continue to receive separate proxy cards. We will promptly send a separate Proxy Statement or notice to a stockholder at a shared address on request. Stockholders with a shared address may also request us to send separate Proxy Statements or notices in the future, or to send a single copy in the future if we are currently sending multiple copies to the same address. Requests related to

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householding should be mailed to Broadridge Householding Department, 51 Mercedes Way, Edgewood, NY 11717 or call Broadridge at 1-800-542-1061.

If you are a stockholder whose shares are held by a bank, broker or other nominee, you can request information about householding from your bank, broker or other nominee.

QUORUM AND VOTE REQUIRED

The holders of at least forty percent in voting power of the shares of common stock issued, outstanding and entitled to vote as of the Record Date present, in person (by virtual presence online) or by proxy, will constitute a quorum at the Special Meeting. Abstentions and broker non-votes (if any) are counted as present and entitled to vote for purposes of determining a quorum.

Approval of Proposal 1, the Increase Authorized Shares Proposal, requires the affirmative vote of the holders of a majority of the shares of common stock casting votes in person (online during the virtual meeting) or by proxy on such proposal at the Special Meeting. This means that the Increase Authorized Shares Proposal will be approved if the votes cast “FOR” the proposal exceed the votes cast “AGAINST” the proposal. Abstentions are not counted as votes cast and will have no effect on the vote on this proposal. We do not expect there to be any broker non-votes with respect to this proposal, however, if there are any broker non-votes, they will not be counted as votes cast and they will have no effect on the vote on this proposal.

Approval of Proposal 2, the Adjournment Proposal, requires the affirmative vote of a majority of the votes entitled to be cast on the proposal by the stockholders who are present in person (by virtual presence online) or represented by proxy at the Special Meeting, whether or not a quorum is present. Abstentions will have the effect of a vote “AGAINST” this proposal.

Each of the proposals is a “routine” matter under NYSE Rule 452 on which brokers may vote without instruction from beneficial owners. Therefore, we do not expect there to be any broker non-votes with respect to the proposals.

If your shares are held by a broker on your behalf (that is, in “street name”), and you do not instruct the broker as to how to vote your shares, the broker may exercise its discretion to vote your shares in the absence of your instruction.

COUNTING VOTES

You may vote “FOR”, “AGAINST” or “ABSTAIN” with respect to each of the proposals presented. A vote “FOR” will be counted in favor of the applicable proposal and a vote “AGAINST” will be counted against the applicable proposal. As noted above, an “ABSTAIN” vote will have no effect on the voting results for the Increase Authorized Shares Proposal/Proposal 1 and will have the effect of a vote “AGAINST” the Adjournment Proposal/Proposal 2.

All properly executed proxies returned in time to be counted at the Special Meeting will be voted by the persons identified on the proxy card at the Special Meeting. Shares represented by a properly executed proxy received prior to the vote at the Special Meeting and not revoked will be voted at the Special Meeting as directed on the proxy. If a properly executed proxy is submitted by a stockholder who holds shares directly as the stockholder of record, but such proxy does not include voting instructions, the proxy will be voted “FOR” each of the proposals described in this Proxy Statement.

Broadridge Financial Solutions, Inc. will be the tabulator of the votes for the Special Meeting.

VOTING BY PROXY

Whether you hold shares directly as the stockholder of record or beneficially in street name, you may direct how your shares are voted without attending the Special Meeting. If you are a stockholder of record, you may vote by proxy. You can vote by proxy over the internet, by mail or by telephone by following the instructions provided in the “Proxy Summary” or on your proxy card or notice. The persons named as attorneys-in-fact and proxies in the proxy, Jason Few and Joshua Dolger, were selected by our Board.

A stockholder may change its voting instructions and revoke its proxy at any time prior to the vote at the Special Meeting. A stockholder of record may change its vote by granting a new proxy bearing a later date (which automatically revokes the earlier proxy) using any of the methods described above (and until the applicable deadline for each method), by providing a written notice of revocation to the Corporate Secretary of the Company or by voting in person (by virtual presence online) at the Special Meeting. Attendance at the Special Meeting will not cause a stockholder’s previously granted proxy to be revoked unless such stockholder specifically so requests

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or such stockholder votes in person (by virtual presence online) at the Special Meeting. For stockholders who hold their shares beneficially in street name, such stockholders may change their voting instructions by submitting new voting instructions to their broker, trustee or nominee following the instructions it has provided, or by attending the Special Meeting and voting.

All expenses incurred in connection with the solicitation of proxies will be borne by the Company. In addition to soliciting proxies through the mail, the Company may solicit proxies through its directors and employees (for no additional compensation) in person or by telephone. We have also hired Alliance Advisors, LLC to assist in the solicitation of proxies. Fees for this service are estimated to be approximately $15,000 plus out-of-pocket expenses, to assist in the solicitation. Brokerage firms, nominees, custodians and fiduciaries also may be requested to forward proxy materials to the beneficial owners of shares held of record by them and will be reimbursed for their reasonable expenses.

If you need assistance in completing your proxy card or have questions regarding the Special Meeting, please contact Alliance Advisors, LLC, the proxy solicitation agent for the Company, by telephone at (888) 490-5067 (toll free) or by email at fcel@allianceadvisors.com.

OTHER MATTERS

As of the date of this Proxy Statement, the Board knows of no matters which will be presented for consideration at the Special Meeting other than the proposals set forth in this Proxy Statement. If any other matters properly come before the Special Meeting, it is intended that the persons named in the proxy will act in respect thereof in accordance with their best judgment.

INFORMATION ABOUT ATTENDING THE SPECIAL MEETING

Admission to the Special Meeting will be restricted to holders of record and beneficial owners of FuelCell Energy voting securities as of the Record Date, August 14, 2023. The Special Meeting will be held entirely online to allow greater participation. Stockholders may participate in the Special Meeting by visiting the following website www.virtualshareholdermeeting.com/FCEL2023SM. To participate in the Special Meeting, you will need the 16-digit control number included on your notice, on your proxy card or on the instructions that accompanied your proxy materials. Shares held in your name as the stockholder of record may be voted electronically during the Special Meeting. Shares for which you are the beneficial owner but not the stockholder of record may also be voted electronically during the Special Meeting. However, even if you plan to attend the virtual Special Meeting, the Company recommends that you submit your proxy in advance, so that your vote will be counted if you later decide not to attend the Special Meeting.

You are entitled to attend the virtual Special Meeting only if you were a stockholder as of the Record Date for the Special Meeting, which was August 14, 2023, or you hold a valid proxy for the Special Meeting. If you were a stockholder as of the Record Date, you may attend the Special Meeting, vote and submit a question during the Special Meeting by visiting www.virtualshareholdermeeting.com/FCEL2023SM and using your 16-digit control number to enter the Special Meeting.

If you have questions regarding admission to the Special Meeting you may contact the office of the Corporate Secretary at:

FuelCell Energy, Inc.

Office of the Corporate Secretary

3 Great Pasture Road

Danbury, CT 06810

(203) 825-6000

corporatesecretary@fce.com

Please include the following information with your inquiry:

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ANNEX a – certificate of amendment of certificate of incorporation

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CERTIFICATE OF AMENDMENT

OF

CERTIFICATE OF INCORPoRATION

OF

FUELCELL ENERGY, INC.

It is hereby certified that:

“FOURTH:  The total number of shares of stock which the Corporation shall have the authority to issue is 1,000,250,000, separated into classes as follows: 1,000,000,000 shares of Common Stock, $.0001 par value (the “Common Stock”); and 250,000 shares of Preferred Stock, $.01 par value (the “Preferred Stock”).”

IN WITNESS WHEREOF, the Corporation has caused this Certificate of Amendment to be signed by the undersigned officer this ___ day of ___________, 20__.

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ONLINE ACCESS TO PROXY MATERIALS

To view this Proxy Statement, visit

www.fuelcellenergy.com and click on the “Investors” tab on the

top on the page, visit www.proxyvote.com, or scan the following QR code.

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