Document:

EUSP-2013.06.18-EX-10.2

Exhibit 10.2

EUROSITE POWER INC.

4% SENIOR CONVERTIBLE NOTES DUE 2015
(GUARANTEED ON A SUBORDINATED BASIS BY AMERICAN DG ENERGY INC.)
NOTEHOLDERS AGREEMENT

Dated as of June 14, 2013

NOTEHOLDERS AGREEMENT (this “Agreement”), dated as of June 14, 2013, among EuroSite Power Inc., a Delaware corporation (the “Company”), American DG Energy Inc., a Delaware corporation, as guarantor (the “Guarantor”), and the holders of the Company’s 4% Senior Convertible Notes due 2015 as set forth on the list of Holders attached to this Agreement as Schedule 1 (such notes, as amended or supplemented from time to time, the “Notes,” each a “Note,” and such holders, the “Holders”).

It is agreed as follows:

ARTICLE 1 
DEFINITIONS

SECTION 1.1    DEFINITIONS.

“Affiliate” means, with respect to any specified person, any other person directly or indirectly controlling or controlled by or under direct or indirect common control with such specified person.  For the purposes of this definition, “control”, when used with respect to any person, means the power to direct the management and policies of such person, directly or indirectly, whether through the ownership of voting securities, by contract or otherwise; and the terms “controlling” and “controlled” have meanings correlative to the foregoing.

“Agreement” has the meaning given such term in the first paragraph of this Agreement.

“Applicable Conversion Price” means $1,000 divided by the Applicable Conversion Rate.

“Applicable Conversion Rate” means, at the time any determination thereof is to be made, the Initial Conversion Rate as adjusted pursuant to Section 3.6.

“Bankruptcy Law” means Title 11 of the United States Code (or any successor thereto) or any similar federal or state law for the relief of debtors.

“Board of Directors” means either the board of directors of the Company or any committee of the Board of Directors authorized to act for it with respect to this Agreement.

“Business Day” shall have the same meaning as Trading Day.

“Capital Stock” means (a) in the case of a corporation, corporate stock, (b) in the case of an association or business entity, shares, interests, participations, rights or other equivalents (however designated) of corporate stock, (c) in the case of a partnership or limited liability company, partnership or membership interests (whether general or limited) and (d) any other interest or participation that confers on a person the right to receive a share of the profits and losses of, or distribution of the assets of, the issuing person.

“cash” means such coin or currency of the United States as at any time of payment is legal tender for the payment of public and private debts.

“Certificate of Transfer” has the meaning given such term in Section 2.2.

“Closing Price of the Common Stock” on any date means the last reported sales price or, in case no such reported sale takes place on such date, the average of the reported closing bid and ask prices on the principal trading market for the Common Stock.   If no such prices are available, the current market price per share shall be the fair value of a share of Common Stock as determined in good faith by the Board of Directors.

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“Common Stock” means the common stock of the Company as it exists on the date of this Agreement, and any shares of any class or classes of capital stock of the Company resulting from any reclassification or reclassifications thereof and which have no preference in respect of dividends or of amounts payable in the event of any voluntary or involuntary liquidation, dissolution or winding-up of the Company and which are not subject to redemption by the Company; provided, however, that if at any time there shall be more than one such resulting class, the shares of each such class then so issuable on conversion of Notes shall be substantially in the proportion which the total number of shares of such class resulting from all such reclassifications bears to the total number of shares of all such classes resulting from all such reclassifications.

“Company” means the party named as such in the first paragraph of this Agreement until a successor replaces it pursuant to the applicable provisions of this Agreement, and thereafter “Company” shall mean such successor Company.

“Conversion Date” has the meaning given such term in Section 3.2.

“Custodian” means any receiver, trustee, assignee, liquidator, sequestrator or similar official under any Bankruptcy Law.

“Default” or “default” means, when used with respect to the Notes, any event which is or, after notice or passage of time or both, would be an Event of Default.

“Event of Default” has the meaning given such term in Section 6.1.

“Exchange Act” means the United States Securities Exchange Act of 1934, as amended, and the rules and regulations promulgated thereunder, as in effect from time to time.    

“Guarantees” has the meaning given such term in Section 6.7.    

“Guarantor” has the meaning given such term in the first paragraph of this Agreement.

“Holder” has the meaning given such term in the first paragraph of this Agreement.

“Initial Conversion Rate” means 1,000 shares of Common Stock per $1,000 principal amount of Notes.

“Legend” has the meaning given such term in Section 2.5.

“Notes” has the meaning given such term in the first paragraph of this Agreement.

“Person” or “person” means any individual, corporation, partnership, limited liability company, joint venture, association, joint-stock company, trust, unincorporated organization, government or any agency or political subdivision thereof or any other entity.

“Principal” or “principal” of a debt security, including the Notes, means the stated principal amount of such debt security.

“Registration Rights Agreement” means the Registration Rights Agreement, dated as of the date hereof, among the Company and the initial Holders.

“SEC” means the United States Securities and Exchange Commission.

“Securities Act” means the United States Securities Act of 1933, as amended, and the rules and regulations promulgated thereunder, as in effect from time to time.

“Senior Guarantor Indebtedness” has the meaning given such term in Section 6.8.

“Stated Maturity Date” or “Stated Maturity” means June 14, 2015.

“Subscription Agreement” has the meaning given such term in Section 2.1.

“Subsidiary” means, in respect of any Person, any corporation, association, partnership or other business entity of 

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which more than 50% of the total voting power of shares of Capital Stock or other interests (including partnership interests) entitled (without regard to the occurrence of any contingency) to vote in the election of directors, managers, general partners or trustees thereof is at the time owned or controlled, directly or indirectly, by (i) such Person; (ii) such Person and one or more Subsidiaries of such Person; or (iii) one or more Subsidiaries of such Person.

“Trading Day” means, with respect to any security, each Monday, Tuesday, Wednesday, Thursday and Friday, other than any day on which securities are not generally traded on the principal exchange or market in which such security is traded.

ARTICLE 2 
THE NOTES

SECTION 2.1    FORM AND DATING.

The Notes shall be issued solely in registered form substantially as set forth in Exhibit A, which exhibit is incorporated in and made part of this Agreement.   Each Note shall be dated as of the date hereof, such that such date will not result in the loss of any interest.  The Notes are being offered and sold by the Company pursuant to one or more Subscription Agreements dated the date hereof (the “Subscription Agreements”) between the Company and the initial Holders, in transactions exempt from, or not subject to, the registration requirements of the Securities Act.

SECTION 2.2    TRANSFER.

Subject to compliance with any applicable additional requirements contained in Section 2.5 of this Agreement, in the Subscription Agreements and applicable law, when a Note is presented to the Company with a request to register a transfer thereof, the Company shall register the transfer as requested; provided, however, that every Note presented or surrendered for registration of transfer shall be duly endorsed or accompanied by an assignment form in the form included as part of the Note, and, if applicable, by a certificate in substantially the form set forth in Exhibit B (a “Certificate of Transfer”) and in form satisfactory to the Company duly executed by the Holder thereof or its attorney duly authorized in writing.  Any transfer shall be without charge. All Notes issued upon any such transfer shall be valid obligations of the Company, evidencing the same debt and entitled to the same benefits under this Agreement, as the Notes surrendered upon such transfer.

SECTION 2.3    REPLACEMENT NOTES.

If any mutilated Note is surrendered to the Company or the Company receives evidence to its satisfaction of the destruction, loss or theft of any Note, and there is delivered to the Company such an indemnity agreement as will be reasonably required by it to save it harmless, then, in the absence of notice to the Company that such Note has been acquired by a bona fide purchaser, the Company shall, at its expense, execute and deliver, in exchange for any such mutilated Note or in lieu of any such destroyed, lost or stolen Note, a new Note of like tenor and principal amount.

Every new Note issued pursuant to this Section 2.3 in lieu of any mutilated, destroyed, lost or stolen Note shall constitute an original additional contractual obligation of the Company, whether or not the mutilated, destroyed, lost or stolen Note shall be at any time enforceable by anyone, and shall be entitled to all benefits of this Agreement equally and proportionately with any and all other Notes duly issued hereunder.  All Notes shall be held and owned upon the express condition that the foregoing provisions are exclusive with respect to the replacement or payment of mutilated, destroyed, lost or stolen Notes and shall preclude (to the extent lawful) any and all other rights or remedies, notwithstanding any law or statute existing or hereafter enacted to the contrary with respect to the replacement or payment of negotiable instruments or other securities without their surrender.

SECTION 2.4    NOTES HELD BY THE COMPANY.

In determining whether the Holders of the required principal amount of Notes have concurred in any notice, direction, waiver or consent, Notes owned by the Company or any other obligor on the Notes shall be disregarded.

SECTION 2.5    LEGEND; TRANSFER AND EXCHANGE REQUIREMENTS.

(a)    If Notes are issued upon the transfer, exchange or replacement of Notes subject to restrictions on transfer and bearing the legends set forth on the form of Note (collectively, the “Legend”), or if a request is made to remove the Legend on a Note, the Notes so issued shall bear the Legend, or the Legend shall not be removed, as the case may be, unless there is delivered to the Company such satisfactory evidence, which shall include an opinion of counsel if requested by the Company, as may be reasonably required by the Company, that neither the Legend nor the restrictions on transfer set forth therein are 

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required to ensure that transfers thereof comply with the registration provisions of the Securities Act or that such Notes are not “restricted” within the meaning of Rule 144 under the Securities Act.

(b)    Subject to the succeeding paragraph, every Note shall be subject to the restrictions on transfer provided in the Legend.  Whenever a Note is presented or surrendered for registration of transfer, such Note must be accompanied by a certificate in substantially the form set forth in Exhibit B (a “Certificate of Transfer”), dated the date of such surrender and signed by the Holder of such Note, as to compliance with such restrictions on transfer.

(c)    The restrictions imposed by the Legend upon the transferability of any Note shall cease and terminate when such Note has been transferred in compliance with Rule 144 (or any successor provision) or, if earlier, upon the expiration of the one-year holding period applicable to sales thereof under Rule 144 under the Securities Act (or any successor provision).  Any Note as to which such restrictions on transfer shall have expired in accordance with their terms or shall have terminated may, upon a surrender of such Note for exchange to the Company in accordance with the provisions of this Section 2.5 accompanied, in the event that such restrictions on transfer have terminated by reason of a transfer in compliance with Rule 144 (or any successor provision), by, if requested, an opinion of counsel reasonably acceptable to the Company, addressed to the Company and in form acceptable to the Company, to the effect that the transfer of such Note has been made in compliance with Rule 144 (or such successor provision) and may be exchanged for a new Note of like tenor and aggregate principal amount which shall not bear the restrictive Legend.

(d)    As used in this Section 2.5, the term “transfer” encompasses any sale, pledge, transfer, hypothecation or other disposition of any Note.

SECTION 2.6    REDEMPTION OR PREPAYMENT.

The notes may not be redeemed or prepaid in whole or in part at any time prior to the Stated Maturity Date.

ARTICLE 3
CONVERSION

SECTION 3.1    CONVERSION PRIVILEGE.

Subject to the further provisions of this Article 3, a Holder of a Note may convert the principal amount of such Note (or any portion thereof equal to $1,000 or any integral multiple of $1,000 in excess thereof) into Common Stock at any time prior to the close of business on the last Business Day prior to the Stated Maturity Date, at the Applicable Conversion Rate in effect on the Conversion Date.  The Initial Conversion Rate is subject to adjustment as provided in this Article 3.

Provisions of this Agreement that apply to conversion of all of a Note also apply to conversion of a portion of a Note.

A Holder of Notes is not entitled to any rights of a holder of Common Stock until such Holder has converted its Notes to Common Stock, and only to the extent such Notes are deemed to have been converted into Common Stock pursuant to this Article 3.

SECTION 3.2    CONVERSION PROCEDURE.

To convert a Note, a Holder must (a) complete and manually sign the conversion notice on the back of the Note and deliver such notice to the Company, (b) surrender the Note to the Company, (c) furnish appropriate endorsements and transfer documents if required by the Company, and (d) pay any transfer or similar tax, if required.  The date on which the Holder satisfies all of those requirements is the “Conversion Date.”  As soon as practicable after the Conversion Date applicable to a Note, the Company shall deliver to the Holder of such Note (i) a certificate for the number of whole shares of Common Stock issuable upon the conversion of such Note, (ii) cash in lieu of any fractional shares to be issued upon the conversion of such Note pursuant to Section 3.3, (iii) interest accrued, but unpaid, on such Note to the Conversion Date and (iv) an amount equal to the total cash dividends paid from the date of original issuance of the Note to the Conversion Date on the number of shares of Common Stock being converted.

The person in whose name the Common Stock certificate is registered shall be deemed to be a stockholder of record at the close of business on the Conversion Date; provided, however, that no surrender of a Note on any date when the stock transfer books of the Company shall be closed shall be effective to constitute the person or persons entitled to receive the shares of Common Stock upon such conversion as the record holder or holders of such shares of Common Stock on such date, but such surrender shall be effective to constitute the person or persons entitled to receive such shares of Common Stock as the 

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record holder or holders thereof for all purposes at the close of business on the next succeeding day on which such stock transfer books are open; provided, further, that such conversion shall be at the Applicable Conversion Rate in effect on the Conversion Date as if the stock transfer books of the Company had not been closed.  Upon conversion of a Note, such person shall no longer be a Holder of such Note.  No payment or adjustment will be made for dividends or distributions on shares of Common Stock issued upon conversion of a Note except as set forth in the succeeding paragraph.

If a Holder converts more than one Note at the same time, the number of shares of Common Stock issuable upon the conversion shall be based on the aggregate principal amount of Notes converted.

Upon surrender of a Note that is converted in part, the Company shall execute and deliver to the Holder a new Note equal in principal amount to the unconverted portion of the Note surrendered. Any such Note shall be dated so that there shall be no loss of interest on such Note.

SECTION 3.3    FRACTIONAL SHARES.

The Company will not issue fractional shares of Common Stock upon conversion of Notes.  In lieu thereof, the Company will pay an amount in cash for the current market value of the fractional shares.  The current market value of a fractional share shall be determined, (calculated to the nearest 1/1000th of a share) by multiplying the Closing Price of the Common Stock on the Trading Day immediately prior to the Conversion Date by such fractional share and rounding the product to the nearest whole cent.

SECTION 3.4    TAXES ON CONVERSION.

If a Holder converts a Note, the Company shall pay any documentary, stamp or similar issue or transfer tax due on the issue of shares of Common Stock upon such conversion.  However, the Holder shall pay any such tax which is due because the Holder requests the shares to be issued in a name other than the Holder’s name.  The Company may refuse to deliver the certificate representing the Common Stock being issued in a name other than the Holder’s name until the Company receives a sum sufficient to pay any tax which will be due because the shares are to be issued in a name other than the Holder’s name.  Nothing herein shall preclude any tax withholding required by law or regulation.

SECTION 3.5    COMPANY TO PROVIDE STOCK.

The Company shall, prior to issuance of any Notes hereunder, and from time to time as may be necessary, reserve, out of its authorized but unissued Common Stock, a sufficient number of shares of Common Stock to permit the conversion of all outstanding Notes into shares of Common Stock.

All shares of Common Stock delivered upon conversion of the Notes shall be (a) newly issued shares, (b) duly authorized, validly issued, fully paid and nonassessable, and (c) free from preemptive rights and free of any lien or adverse claim.

The Company will endeavor promptly to comply with all federal and state securities laws regulating the offer and delivery of shares of Common Stock upon conversion of Notes, if any, and, if so required, will list or cause to have quoted such shares of Common Stock on each national securities exchange or other over-the-counter market or such other trading market on which the Common Stock is then listed or quoted; provided, however, that if rules of such exchange or other trading market permit the Company to defer the listing of such Common Stock until the first conversion of the Notes into Common Stock in accordance with the provisions of this Agreement, the Company covenants to list such Common Stock issuable upon conversion of the Notes in accordance with the requirements of such automated quotation system or exchange at such time.  Any Common Stock issued upon conversion of a Note hereunder that at the time of conversion was subject to restrictions on transfer will continue to be subject to the restrictions on transfer applicable to the Note.

SECTION 3.6    ANTI-DILUTION ADJUSTMENTS.

The Applicable Conversion Rate will be subject to adjustment, without duplication, upon the occurrence of any of the following events:

(a)    the Company pays a dividend or makes a distribution on the Common Stock, payable exclusively in shares of Common Stock, in which event, the conversion rate in effect immediately before the close of business on the record date fixed for determination of stockholders entitled to receive that dividend will be increased by multiplying:  (x) the Applicable Conversion Rate; by (y) a fraction, (1) the numerator of which is the sum of the number of shares of Common Stock 

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outstanding before the close of business on such record date and the total number of shares constituting such dividend or other distribution, and (2) the denominator of which shall be the number of shares of Common Stock outstanding before the close of business on such record date;

(b)    the Company:

(1)    subdivides or splits the outstanding shares of Common Stock into a greater number of shares, in which event the Applicable Conversion Rate shall be proportionally increased immediately after the effective date of such subdivision or split;

(2)    combines or reclassifies the outstanding shares of Common Stock into a smaller number of shares, in which event the Applicable Conversion Rate shall be proportionally reduced immediately after the effective date of such combination or reclassification; or

(3)    issues by reclassification of the shares of Common Stock any shares of the Capital Stock of the Company.

(c)    the Company distributes to all or substantially all holders of Common Stock evidences of indebtedness, securities or assets or certain rights to purchase its securities (provided, however, that if these rights are only exercisable upon the occurrence of specified triggering events, then the Applicable Conversion Rate will not be adjusted until the triggering events occur and provided, further, with respect to rights to purchase the Company’s securities, no adjustment shall be required if the Company makes such rights directly available to the Holders on an as-converted-to-Common Stock basis), but excluding:

(1)    dividends or distributions described in paragraph (a) above; and
(2)    dividends or distributions paid exclusively in cash out of retained earnings

(the “distributed assets”), in which event (other than in the case of a spin-off as described below), the conversion rate in effect immediately before the close of business on the record date fixed for determination of stockholders entitled to receive that distribution will be increased by multiplying:

(x)    the Applicable Conversion Rate; by
(y)    a fraction, (1) the numerator of which is the current per-share market price of the Common Stock and (2) the denominator of which is the current per share market price of the Common Stock minus the fair market value, as determined by the Board of Directors, whose determination in good faith will be conclusive, of the portion of those distributed assets applicable to one share of Common Stock.

For purposes of this paragraph (c) (unless otherwise stated), the “current market price” of the Common Stock means the volume weighted average of the Closing Prices of the Common Stock for the 30 consecutive Trading Days ending on the Trading Day prior to the earlier of the record date or the ex-dividend Trading Day for such distribution, and the new Applicable Conversion Rate shall take effect immediately after the record date fixed for determination of the stockholders entitled to receive such distribution.

Notwithstanding the foregoing, in cases where (x) the fair market value per share of Common Stock of the distributed assets equals or exceeds the current market price of the Common Stock, or (y) the current market price of the Common Stock exceeds the fair market value per share of Common Stock of the distributed assets by less than $0.10, in lieu of the foregoing adjustment, the Holder will have the right to receive upon conversion, in addition to shares of Common Stock, the distributed assets the Holder would have received if the Holder had converted the Notes immediately prior to the record date.

(d)    In respect of a dividend or other distribution of shares of Capital Stock of any class or series, or similar equity interests, of or relating to a Subsidiary of the Company or other business unit, referred to herein as a “spin-off,” the Applicable Conversion Rate in effect immediately before the close of business on the record date fixed for determination of stockholders entitled to receive that distribution will be increased in an equitable manner by the Board of Directors of the Company.

In addition to the adjustments set forth above, the Company shall be entitled to increase the Applicable Conversion Rate at the discretion of the Board of Directors to avoid or diminish any income tax to holders of Common Stock or rights to purchase Common Stock resulting from any dividend or distribution of Capital Stock (or rights to acquire Capital Stock) or from any event treated as such for income tax purposes. The Company may also, from time to time, to the extent permitted by applicable law, increase the Applicable Conversion Rate by any amount for any period of at least 20 days if the Board of 

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Directors has determined that such increase would be in the Company’s best interests. If the Board of Directors makes such a determination, it will be conclusive. The Company will give Holders at least 15 days’ notice of such an increase in the Applicable Conversion Rate.

No adjustment to the Applicable Conversion Rate or a Holder’s ability to convert its Notes will be made if the Holder otherwise participated in the distribution without conversion.

If a Holder will receive shares of Common Stock upon conversion of Notes, then the Holder will also receive any associated rights under any stockholder rights plan the Company may adopt, whether or not the rights have separated from the Common Stock at the time of conversion unless, prior to conversion, the rights have expired, terminated or been redeemed or exchanged.

As soon as reasonably practicable after an adjustment of the Applicable Conversion Rate, the Company will give notice to the Holders detailing the new Applicable Conversion Rate and other relevant information.

ARTICLE 4
COVENANTS

SECTION 4.1    PAYMENTS.

The Company shall promptly make all payments, to the fullest extent permitted by law, in respect of the Notes, in cash (except as set forth below), on the dates and in the manner provided in the Notes and this Agreement.

Payment of the principal of and any interest on the Notes shall be paid by wire transfer in immediately available funds at the election of a Holder, if such Holder has provided wire transfer instructions to the Company at least 10 Business Days prior to the payment date, or, if no such instructions are received, by check mailed to such Holder on the payment date to the address of record of such Holder.

The Company shall, (in immediately available funds) to the fullest extent permitted by law, pay interest on overdue principal and overdue installments of interest.

In lieu of receiving cash at the Stated Maturity Date, each Holder shall have the separate right, by notice to the Company prior to the Stated Maturity Date, (i) to extend the term of the Notes (or a portion thereof) held by such Holder for three additional years but with an automatic decrease in the interest rate from 4% to 3%, and in such event, such Notes shall remain outstanding under this Agreement and be “Notes” for all purposes, except for purposes of this paragraph, or (ii) exchange the Note for a non-convertible promissory note, guaranteed on a subordinated basis by the Guarantor, in the same principal amount outstanding of the Note on the date of such exchange which matures three years from the date of such exchange, and such new note shall have a 6% interest rate; no accrued interest shall be lost on any such exchange.

SECTION 4.2    PRIORITY.

The Notes are general unsecured debt obligations of the Company and are senior in right of payment to any indebtedness expressly made subordinate to the Notes by the terms thereof.

SECTION 4.3    MAINTENANCE OF CORPORATE EXISTENCE.

The Company will do or cause to be done all things necessary to preserve and keep in full force and effect its corporate existence, subject to its right to consolidate with or merge into any other Person (in a transaction in which the Company is not the surviving corporation) or convey, transfer or lease its properties and assets substantially as an entirety to any Person in accordance with Article 5.

ARTICLE 5
CONSOLIDATION, MERGER, CONVEYANCE, TRANSFER OR LEASE

SECTION 5.1    COMPANY MAY CONSOLIDATE, ETC., ONLY ON CERTAIN TERMS.

The Company shall not consolidate with or merge into any other Person (in a transaction in which the Company is not the surviving corporation) or convey, transfer or lease its properties and assets substantially as an entirety to any Person, unless:

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(1)    in case the Company shall consolidate with or merge into another Person (in a transaction in which the Company is not the surviving corporation) or convey, transfer or lease its properties and assets substantially as an entirety to any Person, the Person formed by such consolidation or into which the Company is merged or the Person which acquires by conveyance or transfer, or which leases, the properties and assets of the Company substantially as an entirety shall expressly assume, by an agreement supplemental hereto, executed and delivered to the Company and each Holder, in customary form, the due and punctual payment of the principal of, and interest on, all the Notes and the performance or observance of every covenant of this Agreement on the part of the Company to be performed or observed and the conversion rights shall be provided for in accordance with this Agreement by supplemental agreement in customary form, executed and delivered to each Holder, by the Person (if other than the Company) formed by such consolidation or into which the Company shall have been merged or by the Person which shall have acquired the Company’s assets; and

(2)    immediately after giving effect to such transaction, no Event of Default, and no event which, after notice or lapse of time or both, would become an Event of Default, shall have happened and be continuing.

In the case of a reclassification, consolidation, merger, sale or transfer of assets or other transactions pursuant to which all or substantially all of the Common Stock would be converted into other securities, cash or property, the right to convert Notes into Common Stock will be changed into a right to convert Notes into the kind and amount of other securities, cash or property that the Holder would have received had the Holder converted such Notes immediately prior to the transaction.

SECTION 5.2    SUCCESSOR SUBSTITUTED.

Upon any consolidation of the Company with, or merger of the Company into, any other Person or any conveyance, transfer or lease of the properties and assets of the Company substantially as an entirety in accordance with this Agreement, there shall be an adjustment to the Applicable Conversion Rate and the successor Person formed by such consolidation or into which the Company is merged or to which such conveyance, transfer or lease is made shall succeed to, and be substituted for, and may exercise every right and power of, the Company under this Agreement with the same effect as if such successor Person had been named as the Company herein, and thereafter, except in the case of a lease, the predecessor Person shall be relieved of all obligations and covenants under this Agreement and the Notes.

ARTICLE 6
DEFAULT AND REMEDIES

SECTION 6.1    EVENTS OF DEFAULT.

An “Event of Default” shall occur if:

(1)    the Company defaults in the payment of any interest on any Note when the same becomes due and payable and the default continues for a period of 10 days;

(2)    the Company defaults in the payment of any principal of any Note when the same becomes due and payable;

(3)    the Company fails to comply with any of its other agreements contained in the Notes or this Agreement and the default continues for the period and after the notice specified below;

(4)    the Company, pursuant to or within the meaning of any Bankruptcy Law:

(A)    commences a voluntary case or proceeding;

(B)    consents to the entry of an order for relief against it in an involuntary case or proceeding;

(C)    consents to the appointment of a Custodian of it or for all or substantially all of its property; 
or

(D)    makes a general assignment for the benefit of its creditors; or

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(5)    a court of competent jurisdiction enters an order or decree under any Bankruptcy Law that:

(A)    is for relief against the Company in an involuntary case or proceeding;

(B)    appoints a Custodian of the Company or for all or substantially all of the property of the Company; or

(C)    orders the liquidation of the Company; and in each case the order or decree remains unstayed and in effect for 60 consecutive days.

A default under clause (3) above is not an Event of Default until Holders of at least 25% in aggregate principal amount of the Notes then outstanding notify the Company, in writing of the default, and the Company does not cure the default within 60 days after receipt of such notice.  The notice given pursuant to this Section 6.1 must specify the default, demand that it be remedied and state that the notice is a “Notice of Default.”  When any default under this Section 6.1 is cured, it ceases.

SECTION 6.2    ACCELERATION.

If an Event of Default (other than an Event of Default specified in clause (4) or (5) of Section 6.1) occurs and is continuing, the Holders of at least 25% in aggregate principal amount of the Notes then outstanding may, by notice to the Company, declare all unpaid principal to the date of acceleration on the Notes then outstanding (if not then due and payable) to be due and payable upon any such declaration, and the same shall become and be immediately due and payable.  If an Event of Default specified in clause (4) or (5) of Section 6.1 occurs, all unpaid principal of the Notes then outstanding shall ipso facto become and be immediately due and payable without any declaration or other act on the part of any Holder.  The Holders of a majority in aggregate principal amount of the Notes then outstanding by notice to the Company may rescind an acceleration and its consequences if (a) all existing Events of Default, other than the nonpayment of the principal of the Notes that has become due solely by such declaration of acceleration, have been cured or waived; (b) to the extent the payment of such interest is lawful, interest (calculated at the rate per annum borne by the Notes) on overdue installments of interest and overdue principal, which has become due otherwise than by such declaration of acceleration, has been paid; and (c) the rescission would not conflict with any judgment or decree of a court of competent jurisdiction.  No such rescission shall affect any subsequent default or impair any right consequent thereto.

SECTION 6.3    OTHER REMEDIES.

If an Event of Default occurs and is continuing, each Holder may, but shall not be obligated to, pursue any available remedy by proceeding at law or in equity to collect the payment of the principal of or interest on the Notes or to enforce the performance of any provision of the Notes or this Agreement. All available remedies are cumulative to the extent permitted by law.

SECTION 6.4    WAIVER OF DEFAULTS AND EVENTS OF DEFAULT.

Subject to Sections 6.6 and 7.2, the Holders of a majority in aggregate principal amount of the Notes then outstanding by notice to the Company may waive an existing default or Event of Default and its consequence, except a default or Event of Default in the payment of the principal of or interest on any Note, a failure by the Company to convert any Notes into Common Stock in accordance with the provisions of the Notes and this Agreement or any default or Event of Default in respect of any provision of this Agreement or the Notes which, under Section 7.2, cannot be modified or amended without the consent of the Holder of each Note affected.  When a default or Event of Default is waived, it is cured and ceases.

SECTION 6.5    CONTROL BY MAJORITY.

The Holders of a majority in aggregate principal amount of the Notes then outstanding may direct the time, method and place of conducting any proceeding for any remedy with respect to this Agreement.

SECTION 6.6    RIGHTS OF HOLDERS TO RECEIVE PAYMENT AND TO CONVERT.

Notwithstanding any other provision of this Agreement, the right of any Holder of a Note to receive payment of the principal of, and interest on, the Note, on or after the respective due dates expressed in the Note and this Agreement, to convert such Note in accordance with Article 3 and to bring suit for the enforcement of any such payment on or after such respective dates or the right to convert, is absolute and unconditional, subject to applicable law, and shall not be impaired or affected without the consent of the Holder.

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SECTION 6.7    GUARANTEES.

The Guarantor hereby unconditionally guarantees (the “Guarantees”) to each Holder of a Note the due and punctual payment of the principal of, and interest on, the Note when and as the same shall become due and payable, whether at the Stated Maturity, by declaration of acceleration or otherwise, in accordance with the terms of the Notes and this Agreement. In case of the failure of the Company punctually to make any such payment, the Guarantor hereby agrees to cause such payment to be made punctually when and as the same shall become due and payable, whether at the Stated Maturity or by declaration of acceleration or otherwise, as if such payment were made by the Company. The Guarantor hereby waives the benefits of diligence, presentment, demand of payment, filing of claims with a court in the event of insolvency or bankruptcy of the Company, any right to require a proceeding first against the Company, protest or notice with respect to the Notes or the indebtedness evidenced thereby and all demands whatsoever, and covenants that the Guarantees will not be discharged in respect of such Note except by complete performance of the obligations contained in such Guarantee. The Guarantor shall be subrogated to all rights of the Holders of the Notes against the Company in respect of any amounts paid by the Guarantor on account of such Notes pursuant to the provisions of the Guarantees or this Agreement.

The Guarantees to be endorsed on the Notes shall be in substantially the form contained in the form of Note attached hereto. The Guarantor hereby agrees to execute the Guarantees in such form.

SECTION 6.8    SUBORDINATION OF GUARANTEES.

The Guarantor covenants and agrees, and each Holder of a Note and the related Guarantee, by its acceptance thereof, likewise covenants and agrees, that, notwithstanding anything to the contrary contained herein or in the Guarantees, to the extent and in the manner hereinafter set forth in this Section 6.8, the Guarantees in respect of the Notes are hereby expressly made subordinate and subject in right of payment to the prior payment in full of all Senior Guarantor Indebtedness.  “Senior Guarantor Indebtedness” means the principal of, premium, if any, and interest on and all other amounts due on or with respect to the following, whether outstanding at the date hereof or hereafter created or incurred:

(i)    indebtedness of the Guarantor for money borrowed by the Guarantor (excluding the Guarantees being issued, which will rank pari passu with the obligations represented by all other Guarantees issued pursuant to this Agreement in right of payment, but including, without limitation purchase money obligations and money borrowed from any Affiliate of the Guarantor) whether or not evidenced by debentures, bonds, notes or other corporate debt securities or similar instruments issued by the Guarantor;

(ii)    obligations to reimburse any bank or other person in respect of amounts paid under letters of credit;

(iii)    leases for real property, equipment or other assets, which leases are capitalized in the Guarantor’s consolidated financial statements in accordance with generally accepted accounting principles;

(iv)    commitment, standby and other fees due and payable to financial institutions with respect to credit facilities available to the Guarantor;

(v)    obligations of the Guarantor under interest rate and currency swaps, floors, caps or other similar arrangements intended to fix or hedge interest rate obligations or currency exposure;

(vi)    obligations secured by any mortgage, pledge, lien or other encumbrance on property which is owned or held by the Guarantor subject to such mortgage, pledge, lien or other encumbrance, whether or not the obligations secured thereby shall have been assumed by the Guarantor;

(vii)    obligations of the Guarantor constituting guarantees of indebtedness of or joint obligations with another or others which would be included in the preceding clauses (i), (ii), (iii), (iv), (v) or (vi); or

(viii)    modifications, renewals, extensions or refundings of any of the indebtedness, leases, fees or obligations referred to in the preceding clauses (i), (ii), (iii), (iv), (v), (vi) and (vii), or debentures, notes or other evidences of indebtedness issued in exchange therefor;

provided that Senior Guarantor Indebtedness shall not include any particular indebtedness, lease, fee, obligation, modification, renewal, extension, refunding or exchanged security if, under the express provisions of the instrument creating or evidencing the same, or pursuant to which the same is outstanding, such indebtedness, lease, fee or obligation or such 

10

modification, renewal, extension, refunding or exchanged security is stated to be not superior in right of payment to the Guarantees.

In the event of (a) any insolvency or bankruptcy case or proceeding, or any receivership, liquidation, reorganization or other similar case or proceeding in connection therewith, relative to the Guarantor or its creditors, as such, or to its assets, or (b) any liquidation, dissolution or other winding up of the Guarantor, whether voluntary or involuntary and whether or not involving insolvency or bankruptcy, or (c) any assignment for the benefit or creditors or any other marshaling of assets and liabilities of the Guarantor, then and in any such event the holders of Senior Guarantor Indebtedness shall be entitled to receive payment in full of all amounts due or to become due on or in respect of all Senior Guarantor Indebtedness, or provision shall be made for such payment in money or money’s worth, before the Holders of the Guarantees are entitled to receive any payment under the Guarantees and to that end the holders of Senior Guarantor Indebtedness shall be entitled to receive, for application to the payment thereof, any payment or distribution of any kind or character, whether in cash, property or securities, which may be payable or deliverable in respect of the Guarantees in any such case, proceeding, dissolution, liquidation or other winding up or event.  Any payment to the Holder of a Note that contravenes the foregoing provisions shall be paid over or delivered forthwith to the trustee in bankruptcy, receiver, liquidating trustee, custodian, assignee, agent or other person making payment or distribution of assets of the Guarantor for application to the payment of all Senior Guarantor Indebtedness remaining unpaid, to the extent necessary to pay all Senior Guarantor Indebtedness in full, after giving effect to any concurrent payment or distribution to or for the holder of Senior Guarantor Indebtedness.

Upon the maturity of any Senior Guarantor Indebtedness by lapse of time, acceleration or otherwise, all principal thereof and interest due thereon, including interest thereon accruing after the commencement of any proceeding of the type referred to in the preceding provisions of this Section 6.8 and all other amounts due on or with respect thereto, shall first be paid in full, or such payment duly provided for in cash, before any payment, directly or indirectly, is made by the Guarantor, directly or indirectly, in respect of the Guarantees on account of the principal of or interest on the Notes.  Upon the happening of an event of default with respect to any Senior Guarantor Indebtedness, as defined therein or in the instrument under which it is outstanding permitting the holders to accelerate the maturity thereof, then, unless and until such event of default shall have been cured or waived or shall have ceased to exist, no payment shall be made by the Guarantor, directly or indirectly, in respect of the Guarantees on account of the principal of or interest on the Notes.

In the event that, notwithstanding the foregoing, the Guarantor shall make any payment to a Holder with respect to the Guarantee of any Note prohibited by the foregoing provisions of this Section 6.8, and if such fact shall, at or prior to the time of such payment, have been made known to the Holder of the Note to which such Guarantee relates, then and in such event such payment shall be paid over and delivered forthwith to the Guarantor.

Nothing contained in this Section 6.8 or elsewhere in this Agreement or in any of the Notes or the Guarantees shall prevent the Guarantor, at any time except during the pendency of any case, proceeding, dissolution, liquidation or other winding up, assignment for the benefit of creditors from making payments at any time on the Guarantees on account of principal of, or interest on, the Notes.

Subject to the payment in full of all Senior Guarantor Indebtedness, the Holders of the Notes which are entitled to the benefits of the Guarantee shall be subrogated to the extent of the payments or distributions made to the holders of such Senior Guarantor Indebtedness pursuant to the provisions of this Section 6.8 and to the rights of the holders of such Senior Guarantor Indebtedness to receive payments and distributions of cash, property and securities applicable to the Senior Guarantor Indebtedness until the principal of, and interest on, the Notes shall be paid in full.  For purposes of such subrogation, no payments or distributions to the holders of the Senior Guarantor Indebtedness of any cash, property or securities to which the Holders of any Note entitled to the benefits of a Guarantee would be entitled except for the provisions of this Section 6.8, and no payments pursuant to the provisions of this Section 6.8 to the holders of Senior Guarantor Indebtedness by Holders of any Note entitled to the benefits of a Guarantee shall, as among the Guarantor, its creditors other than holders of Senior Guarantor Indebtedness and the Holders of any Note entitled to the benefits of a Guarantee, be deemed to be a payment or distribution by the Guarantor to or on account of the Senior Guarantor Indebtedness.

The provisions of this Section 6.8 are and are intended solely for the purpose of defining the relative rights of the Holders of any Note entitled to the benefits of a Guarantee on the one hand and the holders of Senior Guarantor Indebtedness on the other hand.  Nothing contained in this Section 6.8 or elsewhere in this Agreement or in the Guarantees or the Notes is intended to or shall (a) impair, as among the Guarantor, its creditors other than holders of Senior Guarantor Indebtedness and the Holders of any Note entitled to the benefits of a Guarantee, the obligation of the Guarantor, which is absolute and unconditional (and which, subject to the rights under this Section 6.8 of the holders of Senior Guarantor Indebtedness, is intended to rank equally with all other general obligations of the Guarantor), to pay to the Holders of any Note entitled to the benefits of a Guarantee on account of the principal of, and interest on, the Notes as and when the same shall become due and 

11

payable in accordance with their terms; or (b) affect the relative rights against the Guarantor of the Holders of any Note entitled to the benefits of a Guarantee and creditors of the Guarantor other than the holders of Senior Guarantor Indebtedness; or (c) prevent any Holder of any Note entitled to the benefits of a Guarantee from exercising all remedies provided herein or otherwise permitted by applicable law upon default under this Agreement, subject to the rights, if any, under this Section 6.8 of the holders of Senior Guarantor Indebtedness to receive cash, property and securities otherwise payable or deliverable to such Holder.

Holders of Senior Guarantor Indebtedness may, at any time and from time to time, without the consent of or notice to the Holders of any Note entitled to the benefits of a Guarantee, without incurring responsibility to the Holders of any Note entitled to the benefits of a Guarantee and without impairing or releasing the subordination provided in this Section 6.8 or the obligations hereunder of the Holders of any Note entitled to the benefits of a Guarantee to the holders of Senior Guarantor Indebtedness, do any one or more of the following: (i) change the manner, place or terms of payment or extend the time of payment of, or renew or alter, Senior Guarantor Indebtedness, or otherwise amend or supplement in any manner Senior Guarantor Indebtedness or any instrument evidencing the same or any agreement under which Senior Guarantor indebtedness is outstanding; (ii) sell, exchange, release or otherwise deal with any property pledged, mortgaged or otherwise securing Senior Guarantor Indebtedness; (iii) release any person liable in any manner for the collection of Senior Guarantor Indebtedness; and (iv) exercise or refrain from exercising any rights against the Guarantor and any other Person.

ARTICLE 7
AMENDMENTS, SUPPLEMENTS AND WAIVERS

SECTION 7.1    WITHOUT CONSENT OF HOLDERS.

The Company may amend or supplement this Agreement or the Notes without notice to or consent of any Holder:

(a)    to comply with Section 5.1;

(b)    to cure any ambiguity, defect or inconsistency;

(c)    to make any other change that does not adversely affect the rights of any Holder;

(d)    to add to the covenants of the Company for the equal and ratable benefit of the Holders or to surrender any right, power or option conferred upon the Company; or

(e)    to secure the Company’s obligations with respect to the Notes.

SECTION 7.2    WITH CONSENT OF HOLDERS.

The Company may amend or supplement this Agreement or the Notes with the written consent of the Holders of at least a majority in aggregate principal amount of the Notes then outstanding.  The Holders of at least a majority in aggregate principal amount of the Notes then outstanding may waive compliance in a particular instance by the Company with any provision of this Agreement or the Notes without notice to any Holder.  However, notwithstanding the foregoing but subject to Section 7.3, without the written consent of each Holder affected, an amendment, supplement or waiver, including a waiver pursuant to Section 6.4, may not:

(a)    change the Stated Maturity of the principal of, or interest on, any Note;

(b)    reduce the principal amount of, or  interest on, any Note;

(c)    reduce the amount of principal payable upon acceleration of the maturity of any Note;

(d)    change the place or currency of payment of principal of, or interest on, any Note;

(e)    impair the right to institute suit for the enforcement of any payment on, or with respect to, any Note;

(f)    adversely affect the right of Holders to convert Notes other than as provided in or under Article 3 of this Agreement;

(g)    reduce the percentage of the aggregate principal amount of the outstanding Notes whose Holders must 

12

consent to a modification or amendment;

(h)    reduce the percentage of the aggregate principal amount of the outstanding Notes necessary for the waiver of compliance with certain provisions of this Agreement or the waiver of certain defaults under this Agreement; or

(i)    modify any of the provisions of this Section 7.2 or Section 6.4, except to increase any such percentage or to provide that certain provisions of this Agreement cannot be modified or waived without the consent of the Holder of each outstanding Note affected thereby.

It shall not be necessary for the consent of the Holders under this Section 7.2 to approve the particular form of any proposed amendment, supplement or waiver, but it shall be sufficient if such consent approves the substance thereof.

After an amendment, supplement or waiver under this Section 7.2 becomes effective, the Company shall mail to the Holders affected thereby a notice briefly describing the amendment, supplement or waiver.  Any failure of the Company to mail such notice, or any defect therein, shall not, however, in any way impair or affect the validity of any such amendment, supplement or waiver.

To the extent that the Company holds any Notes, such Notes shall be disregarded for purposes of voting in connection with any notice, waiver, consent or direction requiring the vote or concurrence of Holders.

SECTION 7.3    REVOCATION AND EFFECT OF CONSENTS.

Until an amendment, supplement or waiver becomes effective, a consent to it by a Holder is a continuing consent by the Holder and every subsequent Holder of a Note or portion of a Note that evidences the same debt as the consenting Holder’s Note, even if notation of the consent is not made on any Note.  However, any such Holder or subsequent Holder may revoke the consent as to its Note or portion of a Note if the Company receives the notice of revocation before the date the amendment, supplement or waiver becomes effective.

After an amendment, supplement or waiver becomes effective, it shall bind every Holder, unless it makes a change described in any of clauses (a) through (i) of Section 7.2.  In that case the amendment, supplement or waiver shall bind each Holder of a Note who has consented to it and every subsequent Holder of a Note or portion of a Note that evidences the same debt as the consenting Holder’s Note.

SECTION 7.4    NOTICES.

Any demand, authorization notice, request, consent or communication shall be given in writing and shall be deemed effectively given: (i) upon personal delivery to the party to be notified, (ii) when sent by confirmed electronic mail or facsimile if sent during normal business hours of the recipient, and if not so confirmed, then on the next Business Day, (iii) five days after having been sent by registered or certified mail (or regular mail if registered or certified mail is unavailable in the country of the recipient), (iv) if sent within the U.S., one Business Day after deposit with a recognized overnight courier, specifying next Business Day delivery, with written verification of receipt or (v) if sent from the U.S. to an address outside the U.S. or if sent from outside the U.S. to an address within the U.S., five Business Days after deposit with an internationally recognized courier service if, specifying that delivery be made within five Business Days with written verification of receipt.  All notices and other communications shall be sent if sent to a Holder, to the address, fax number or email address of such Holder set forth on the signature page to this Agreement, as it may subsequently change on the Company’s books by notice from the Holder; and

If to the Company, to:    EuroSite Power Inc.
45 First Street
Waltham, MA 02451
Attention:  Chief Financial Officer
Fax No.:  (781) 622-1027
Phone No.:  (781) 622-1117

With a copy to:        Sullivan & Worcester LLP
One Post Office Square
Boston, MA 02109
Attention:  Edwin L. Miller, Jr.
Fax No.:  (617) 338-2880

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Phone No.:  (617) 338-2800

Such notices or communications shall be effective when received.  If a notice or communication to a Holder is sent in the manner provided above, it is duly given, whether or not the addressee receives it.

The Company by notice to the Holders may designate additional or different addresses for subsequent notices or communications.

Failure to mail a notice or communication to a Holder or any defect in it shall not affect its sufficiency with respect to other Holders.

SECTION 7.5    LEGAL HOLIDAYS.

A “Legal Holiday” is a Saturday, Sunday or a day on which state or federally chartered banking institutions in Boston, Massachusetts are not required to be open.  If a payment date is a Legal Holiday, payment shall be made on the next succeeding day that is not a Legal Holiday, and no interest shall accrue for the intervening period.  If a record date is a Legal Holiday, the record date shall not be affected.

SECTION 7.6    GOVERNING LAW AND CONSENT TO JURISDICTION.

This Agreement and the Notes shall be governed by, and construed in accordance with, the laws of the State of New York and, to the extent it involves any United States statute or regulations, in accordance therewith.  The parties hereby consent and submit to the exclusive jurisdiction of the state and federal courts in New York City with respect to all disputes arising in connection with this Agreement.

SECTION 7.7    SUCCESSORS AND ASSIGNS.

This Agreement shall be binding upon and inure to the benefit of the parties hereto and their respective successors and permitted assigns.

SECTION 7.8    MULTIPLE COUNTERPARTS.

The parties may sign multiple counterparts of this Agreement.  Each signed counterpart shall be deemed an original, but all of them together represent the same agreement.

SECTION 7.9    SEPARABILITY.

In case any provisions in this Agreement or in the Notes shall be invalid, illegal or unenforceable, the validity, legality and enforceability of the remaining provisions shall not in any way be affected or impaired thereby.

IN WITNESS WHEREOF, the parties hereto have hereunto set their hands as of the date and year first above written.

EUROSITE POWER INC.

By:  /s/ Barry J. Sanders
Name: Barry J. Sanders
Title: Chief Executive Officer
AMERICAN DG ENERGY INC., as Guarantor

By: /s/ Anthony S. Loumidis
Name: Anthony S. Loumidis
Title: Chief Financial Officer

HOLDERS:
Counterpart signature pages attached

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EXHIBIT B
to Noteholders Agreement

CERTIFICATE TO BE DELIVERED UPON EXCHANGE OR REGISTRATION
OF TRANSFER OF TRANSFER RESTRICTED SECURITIES

Re:   4% Senior Convertible Notes due 2015 (the “Notes”) of EuroSite Power Inc.

This certificate relates to $___________ principal amount of Notes owned in (check applicable box) by  _________________(the “Transferor”).

Capitalized terms used herein shall have the meanings ascribed to such term in the Noteholders Agreement dated as of _________ between EuroSite Power Inc. and the initial Holders of the Notes (the “Noteholders Agreement”).

The Transferor has requested the Company to exchange or register the transfer of such Notes.

In connection with such request and in respect of each such Note, the Transferor does hereby certify that the Transferor is familiar with transfer restrictions relating to the Notes as provided in the Noteholders Agreement, and the transfer of such Note does not require registration under the Securities Act because (check applicable box):

		
	o
	Such Note is being transferred outside the United States in an offshore transaction in accordance with Rule 904 under the Securities Act.

o    Such Note is being acquired for the Transferor's own account, without transfer.

		
	o
	Such Note is being transferred pursuant to and in compliance with an exemption from the registration requirements under the Securities Act in accordance with Rule 144 (or any successor thereto) (“Rule 144”) under the Securities Act.

		
	o
	Such Note is being transferred pursuant to and in compliance with an exemption from the registration requirements of the Securities Act (other than an exemption referred to above) and as a result of which such Note will, upon such transfer, cease to be a “restricted security” within the meaning of Rule 144 under the Securities Act.

Date:                                                 
(Insert Name of Transferor)

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SCHEDULE 1
List of Noteholders

		
	1.
	Perastra Finance SA

		
	2.
	American DG Energy Inc.

		
	3.
	Nettlestone Enterprises Limited

		
	4.
	Yves Micheli

		
	5.
	Prime World Corporation

		
	6.
	Bruno Meier

		
	7.
	Charles T. Maxwell

16EUSP-2013.06.18-EX-10.3

Exhibit 10.3

REGISTRATION RIGHTS AGREEMENT

THIS REGISTRATION RIGHTS AGREEMENT is made as of the 14th day of June, 2013, by and among EuroSite Power Inc., a Delaware corporation (the “Company”), and each of the holders of the Company’s 4% Senior Convertible Notes due 2015 (the “Notes”) listed on Schedule A hereto, each of which is referred to in this Agreement as a “Noteholder”.  The parties hereby agree as follows:

1.Definitions.  For purposes of this Agreement:

1.1    “Affiliate” means, with respect to any specified Person, any other Person directly or indirectly controlling or controlled by or under direct or indirect common control with such specified Person.  For the purposes of this definition, “control”, when used with respect to any Person, means the power to direct the management and policies of such Person, directly or indirectly, whether through the ownership of voting securities, by contract or otherwise; and the terms “controlling” and “controlled” have meanings correlative to the foregoing.

1.2    “Common Stock” means shares of the Company’s common stock, par value $0.001 per share.

1.3    “Company” has the meaning given such term in the first paragraph of this Agreement.

1.4    “Damages” means any loss, damage, claim or liability (joint or several) to which a party hereto may become subject under the Securities Act, the Exchange Act, or other federal or state law, insofar as such loss, damage, claim or liability (or any action in respect thereof) arises out of or is based upon (i) any untrue statement or alleged untrue statement of a material fact contained in any registration statement of the Company, including any preliminary prospectus or final prospectus contained therein or any amendments or supplements thereto; (ii) an omission or alleged omission to state therein a material fact required to be stated therein, or necessary to make the statements therein not misleading; or (iii) any violation or alleged violation by the indemnifying party (or any of its agents or Affiliates) of the Securities Act, the Exchange Act, any state securities law, or any rule or regulation promulgated under the Securities Act, the Exchange Act, or any state securities law.

1.5    “Demand Notice” has the meaning given such term in Subsection 2.1.

1.6    “Exchange Act” means the Securities Exchange Act of 1934, as amended, and the rules and regulations promulgated thereunder.

1.7    “Form S 3” means such form under the Securities Act as in effect on the date hereof or any registration form under the Securities Act subsequently adopted by the SEC that permits incorporation of substantial information by reference to other documents filed by the Company with the SEC.

1.8    “Holder” means any holder of Registrable Securities who is a party to this Agreement.

1.9    “Initiating Holders” means, collectively, Holders who properly initiate a registration request under this Agreement.

1.10    “Noteholders” has the meaning given such term in the first paragraph of this Agreement.

1.11    “Noteholders Agreement” means the Noteholders Agreement, dated as of the date hereof, among the Company and the initial Noteholders.

1.12    “Notes” has the meaning given such term in the first paragraph of this Agreement.

1.13    “Person” means any individual, corporation, partnership, limited liability company, joint venture, association, joint-stock company, trust, unincorporated organization, government or any agency or political subdivision thereof or any other entity.

1.14    “Registrable Securities” means the Common Stock issuable or issued upon conversion of the Notes pursuant to the terms of the Noteholders Agreement, excluding for purposes of Section 2 any shares for which registration rights have terminated pursuant to Subsection 2.8 of this Agreement.

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1.15    “SEC” means the Securities and Exchange Commission.

1.16    “Securities Act” means the Securities Act of 1933, as amended, and the rules and regulations promulgated thereunder.

1.17    “Selling Holder Counsel” has the meaning given such term in Subsection 2.5.

1.18    “Selling Expenses” means all underwriting discounts, selling commissions, and stock transfer taxes applicable to the sale of Registrable Securities, and fees and disbursements of counsel for any Holder, except for the fees and disbursements of the Selling Holder Counsel borne and paid by the Company as provided in Subsection 2.5.

2.Registration Rights.  The Company covenants and agrees as follows:

2.1    Demand Registration.

(a)    If at any time when the Company is eligible to use a Form S-3 registration statement, the Company receives, prior to the first anniversary of this Agreement, a request from Holders of at least thirty percent (30%) of the Registrable Securities that the Company file a Form S-3 registration statement with respect to outstanding Registrable Securities of such Holders having an anticipated aggregate offering price, net of Selling Expenses, of at least $250,000, then the Company shall (i) within ten (10) days after the date such request is given, give notice thereof (the “Demand Notice”) to all Holders other than the Initiating Holders; and (ii) as soon as practicable, and in any event within thirty (30) days after the date such request is given by the Initiating Holders, file a Form S-3 registration statement under the Securities Act covering all Registrable Securities requested to be included in such registration by any other Holders, as specified by notice given by each such Holder to the Company within twenty (20) days of the date the Demand Notice is given, and in each case, subject to the limitations of Subsection 2.1(b) and Subsection 2.2.

(b)    Notwithstanding the foregoing obligations, if the Company furnishes to Holders requesting a registration pursuant to this Subsection 2.1 a certificate signed by the Company’s chief executive officer stating that in the good faith judgment of the Company’s Board of Directors it would be materially detrimental to the Company and its stockholders for such registration statement to be filed and it is therefore necessary to defer the filing of such registration statement, then the Company shall have the right to defer taking action with respect to such filing, and any time periods with respect to filing or effectiveness thereof shall be tolled correspondingly, for a period of not more than sixty (60) days after the request of the Initiating Holders is given; provided, however, that the Company may not invoke this right more than twice.

(c)    The Company shall not be obligated to effect, or to take any action to effect, any registration pursuant to Subsection 2.1(a) (i) during the period that is thirty (30) days before the Company’s good faith estimate of the date of filing of, and ending on a date that is thirty (30) days after the effective date of, a Company-initiated registration for a firm commitment underwriting, provided, that the Company is actively employing in good faith commercially reasonable efforts to cause such registration statement to become effective; or (ii) if the Company has effected a registration pursuant to Subsection 2.1(a) within the twelve (12) month period immediately preceding the date of such request.  A registration shall not be counted as “effected” for purposes of this Subsection 2.1(c) until such time as the applicable registration statement has been declared effective by the SEC, unless the Initiating Holders withdraw their request for such registration, elect not to pay the registration expenses therefor, and forfeit their right to one demand registration statement pursuant to Subsection 2.5, in which case such withdrawn registration statement shall be counted as “effected” for purposes of this Subsection 2.1(c).

2.2    Underwriting Requirements.  If, pursuant to Subsection 2.1, the Initiating Holders intend to distribute the Registrable Securities covered by their request by means of an underwriting, they shall so advise the Company as a part of their request made pursuant to Subsection 2.1, and the Company shall include such information in the Demand Notice.  The underwriter(s) will be selected by the Company and shall be reasonably acceptable to a majority in interest of the Initiating Holders.  In such event, the right of any Holder to include such Holder’s Registrable Securities in such registration shall be conditioned upon such Holder’s participation in such underwriting and the inclusion of such Holder’s Registrable Securities in the underwriting to the extent provided herein.  All Holders proposing to distribute their securities through such underwriting shall (together with the Company as provided in Subsection 2.3(e)) enter into an underwriting agreement in customary form with the underwriter(s) selected for such underwriting.  Notwithstanding any other provision of this Subsection 2.2, if the underwriter(s) advise(s) the Initiating Holders in writing that marketing factors require a limitation on the number of shares to be underwritten, then the Initiating Holders shall so advise all Holders of Registrable Securities that otherwise would be underwritten pursuant hereto, and the number of Registrable Securities that may be included in the underwriting shall be allocated among such Holders of Registrable Securities, including the Initiating Holders, in proportion (as nearly as practicable) to the number of Registrable Securities owned by each Holder or in such other proportion as shall mutually be 

2

agreed to by all such selling Holders; provided, however, that the number of Registrable Securities held by the Holders to be included in such underwriting shall not be reduced unless all other securities are first entirely excluded from the underwriting.  To facilitate the allocation of shares in accordance with the above provisions, the Company or the underwriters may round the number of shares allocated to any Holder to the nearest 100 shares.

2.3    Obligations of the Company.  Whenever required under this Section 2 to effect the registration of any Registrable Securities, the Company shall, as expeditiously as reasonably possible:

(a)    prepare and file with the SEC a registration statement with respect to such Registrable Securities and use its commercially reasonable efforts to cause such registration statement to become effective and, upon the request of the Holders of a majority of the Registrable Securities registered thereunder, keep such registration statement effective until the earlier of the distribution contemplated in the registration statement has been completed or until such time as all of the Registrable Securities covered by such registration statement may be resold without restriction under the Securities Act;

(b)    prepare and file with the SEC such amendments and supplements to such registration statement, and the prospectus used in connection with such registration statement, as may be necessary to comply with the Securities Act in order to enable the disposition of all securities covered by such registration statement;

(c)    furnish to the selling Holders such numbers of copies of a prospectus, including a preliminary prospectus, as required by the Securities Act, and such other documents as the Holders may reasonably request in order to facilitate their disposition of their Registrable Securities;

(d)    use its commercially reasonable efforts to register and qualify the securities covered by such registration statement under such other securities or blue-sky laws of such jurisdictions as shall be reasonably requested by the selling Holders; provided that the Company shall not be required to qualify to do business or to file a general consent to service of process in any such states or jurisdictions, unless the Company is already subject to service in such jurisdiction and except as may be required by the Securities Act;

(e)    in the event of any underwritten public offering, enter into and perform its obligations under an underwriting agreement, in usual and customary form, with the underwriter(s) of such offering;

(f)    use its commercially reasonable efforts to cause all such Registrable Securities covered by such registration statement to be listed on a national securities exchange or trading system and each securities exchange and trading system (if any) on which similar securities issued by the Company are then listed;

(g)    provide a transfer agent and registrar for all Registrable Securities registered pursuant to this Agreement and provide a CUSIP number for all such Registrable Securities, in each case not later than the effective date of such registration;

(h)    promptly make available for inspection by the selling Holders, any underwriter(s) participating in any disposition pursuant to such registration statement, and any attorney or accountant or other agent retained by any such underwriter or selected by the selling Holders, all financial and other records, pertinent corporate documents, and properties of the Company, and cause the Company’s officers, directors, employees, and independent accountants to supply all information reasonably requested by any such seller, underwriter, attorney, accountant, or agent, in each case, as necessary or advisable to verify the accuracy of the information in such registration statement and to conduct appropriate due diligence in connection therewith;

(i)    notify each selling Holder, promptly after the Company receives notice thereof, of the time when such registration statement has been declared effective or a supplement to any prospectus forming a part of such registration statement has been filed; and

(j)    after such registration statement becomes effective, notify each selling Holder of any request by the SEC that the Company amend or supplement such registration statement or prospectus.

2.4    Furnish Information.  It shall be a condition precedent to the obligations of the Company to take any action pursuant to this Section 2 with respect to the Registrable Securities of any selling Holder that such Holder shall furnish to the Company such information regarding itself, the Registrable Securities held by it, and the intended method of disposition of such securities as is reasonably required to effect the registration of such Holder’s Registrable Securities.

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2.5    Expenses of Registration.  All expenses (other than Selling Expenses) incurred in connection with registrations, filings, or qualifications pursuant to Section 2, including all registration, filing, and qualification fees; printers’ and accounting fees; fees and disbursements of counsel for the Company; and the reasonable fees and disbursements of one counsel for the selling Holders (“Selling Holder Counsel”), shall be borne and paid by the Company; provided, however, that the Company shall not be required to pay for any expenses of any registration proceeding begun pursuant to Subsection 2.1 if the registration request is subsequently withdrawn at the request of the Holders of a majority of the Registrable Securities to be registered (in which case all selling Holders shall bear such expenses pro rata based upon the number of Registrable Securities that were to be included in the withdrawn registration), unless the Holders of a majority of the Registrable Securities agree to forfeit their right to one registration pursuant to Subsection 2.1.  All Selling Expenses relating to Registrable Securities registered pursuant to this Section 2 shall be borne and paid by the Holders pro rata on the basis of the number of Registrable Securities registered on their behalf.

2.6    Delay of Registration.  No Holder shall have any right to obtain or seek an injunction restraining or otherwise delaying any registration pursuant to this Agreement as the result of any controversy that might arise with respect to the interpretation or implementation of this Section 2.

2.7    Indemnification.  If any Registrable Securities are included in a registration statement under this Section 2:

(a)    To the extent permitted by law, the Company will indemnify and hold harmless each selling Holder, and the partners, members, officers, directors, and stockholders of each such Holder; legal counsel and accountants for each such Holder; any underwriter (as defined in the Securities Act) for each such Holder; and each Person, if any, who controls such Holder or underwriter within the meaning of the Securities Act or the Exchange Act, against any Damages, and the Company will pay to each such Holder, underwriter, controlling Person, or other aforementioned Person any legal or other expenses reasonably incurred thereby in connection with investigating or defending any claim or proceeding from which Damages may result, as such expenses are incurred; provided, however, that the indemnity agreement contained in this Subsection 2.7(a) shall not apply to amounts paid in settlement of any such claim or proceeding if such settlement is effected without the consent of the Company, which consent shall not be unreasonably withheld, nor shall the Company be liable for any Damages to the extent that they arise out of or are based upon actions or omissions made in reliance upon and in conformity with written information furnished by or on behalf of any such Holder, underwriter, controlling Person, or other aforementioned Person expressly for use in connection with such registration.

(b)    To the extent permitted by law, each selling Holder, severally and not jointly, will indemnify and hold harmless the Company, and each of its directors, each of its officers who has signed the registration statement, each Person (if any), who controls the Company within the meaning of the Securities Act, legal counsel and accountants for the Company, any underwriter (as defined in the Securities Act), any other Holder selling securities in such registration statement, and any controlling Person of any such underwriter or other Holder, against any Damages, in each case only to the extent that such Damages arise out of or are based upon actions or omissions made in reliance upon and in conformity with written information furnished by or on behalf of such selling Holder expressly for use in connection with such registration; and each such selling Holder will pay to the Company and each other aforementioned Person any legal or other expenses reasonably incurred thereby in connection with investigating or defending any claim or proceeding from which Damages may result, as such expenses are incurred; provided, however, that the indemnity agreement contained in this Subsection 2.7(b) shall not apply to amounts paid in settlement of any such claim or proceeding if such settlement is effected without the consent of the Holder, which consent shall not be unreasonably withheld; and provided further that in no event shall the aggregate amounts payable by any Holder by way of indemnity or contribution under Subsections 2.7(b) and 2.7(d) exceed the proceeds from the offering received by such Holder (net of any Selling Expenses paid by such Holder), except in the case of fraud or willful misconduct by such Holder.

(c)    Promptly after receipt by an indemnified party under this Subsection 2.7 of notice of the commencement of any action (including any governmental action) for which a party may be entitled to indemnification hereunder, such indemnified party will, if a claim in respect thereof is to be made against any indemnifying party under this Subsection 2.7, give the indemnifying party notice of the commencement thereof.  The indemnifying party shall have the right to participate in such action and, to the extent the indemnifying party so desires, participate jointly with any other indemnifying party to which notice has been given, and to assume the defense thereof with counsel mutually satisfactory to the parties; provided, however, that an indemnified party (together with all other indemnified parties that may be represented without conflict by one counsel) shall have the right to retain one separate counsel, with the fees and expenses to be paid by the indemnifying party, if representation of such indemnified party by the counsel retained by the indemnifying party would be inappropriate due to actual or potential differing interests between such indemnified party and any other party represented by 

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such counsel in such action.

(d)    To provide for just and equitable contribution to joint liability under the Securities Act in any case in which either (i) any party otherwise entitled to indemnification hereunder makes a claim for indemnification pursuant to this Subsection 2.7 but it is judicially determined (by the entry of a final judgment or decree by a court of competent jurisdiction and the expiration of time to appeal or the denial of the last right of appeal) that such indemnification may not be enforced in such case, notwithstanding the fact that this Subsection 2.7 provides for indemnification in such case, or (ii) contribution under the Securities Act may be required on the part of any party hereto for which indemnification is provided under this Subsection 2.7, then, and in each such case, such parties will contribute to the aggregate losses, claims, damages, liabilities, or expenses to which they may be subject (after contribution from others) in such proportion as is appropriate to reflect the relative fault of each of the indemnifying party and the indemnified party in connection with the statements, omissions, or other actions that resulted in such loss, claim, damage, liability, or expense, as well as to reflect any other relevant equitable considerations.  The relative fault of the indemnifying party and of the indemnified party shall be determined by reference to, among other things, whether the untrue or allegedly untrue statement of a material fact, or the omission or alleged omission of a material fact, relates to information supplied by the indemnifying party or by the indemnified party and the parties’ relative intent, knowledge, access to information, and opportunity to correct or prevent such statement or omission; provided, however, that, in any such case, (x) no Holder will be required to contribute any amount in excess of the public offering price of all such Registrable Securities offered and sold by such Holder pursuant to such registration statement, and (y) no Person guilty of fraudulent misrepresentation (within the meaning of Section 11(f) of the Securities Act) will be entitled to contribution from any Person who was not guilty of such fraudulent misrepresentation; and provided further that in no event shall a Holder’s liability pursuant to this Subsection 2.7(d), when combined with the amounts paid or payable by such Holder pursuant to Subsection 2.7(b), exceed the proceeds from the offering received by such Holder (net of any Selling Expenses paid by such Holder), except in the case of willful misconduct or fraud by such Holder.

(e)    Unless otherwise superseded by an underwriting agreement entered into in connection with the underwritten public offering, the obligations of the Company and Holders under this Subsection 2.7 shall survive the completion of any offering of Registrable Securities in a registration under this Section 2, and otherwise shall survive the termination of this Agreement.

2.8    Termination of Registration Rights.  The right of any Holder to request registration or inclusion of Registrable Securities in any registration pursuant to Subsection 2.1 shall terminate upon such time as all of such Holder’s Registrable Securities may be resold without restriction under the Securities Act; and

3.Miscellaneous.

3.1    Successors and Assigns.  This Agreement shall be binding upon and inure to the benefit of the parties hereto and their respective successors and permitted assigns.

3.2    Governing Law and Venue.  This Agreement shall be governed by, and construed in accordance with, the laws of the State of New York and, to the extent it involves any United States statute or regulations, in accordance therewith.  The parties hereby consent and submit to the exclusive jurisdiction of the state and federal courts in New York City with respect to all disputes arising in connection with this Agreement.

3.3    Counterparts.  This Agreement may be executed in two or more counterparts, each of which shall be deemed an original, but all of which together shall constitute one and the same instrument.  Counterparts may be delivered via facsimile, electronic mail (including pdf) or other transmission method and any counterpart so delivered shall be deemed to have been duly and validly delivered and be valid and effective for all purposes.

3.4    Titles and Subtitles.  The titles and subtitles used in this Agreement are for convenience only and are not to be considered in construing or interpreting this Agreement.

3.5    Notices.  Any demand, authorization notice, request, consent or communication shall be given in writing and shall be deemed effectively given: (i) upon personal delivery to the party to be notified, (ii) when sent by confirmed electronic mail or facsimile if sent during normal business hours of the recipient, and if not so confirmed, then on the next business day, (iii) five days after having been sent by registered or certified mail (or regular mail if registered or certified mail is unavailable in the country of the recipient), (iv) if sent within the U.S., one business day after deposit with a recognized overnight courier, specifying next business day delivery, with written verification of receipt or (v) if sent from the U.S. to an address outside the U.S. or if sent from outside the U.S. to an address within the U.S., five business days after deposit with an internationally recognized courier service if, specifying that delivery be made within five business days with written 

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verification of receipt.  All notices and other communications shall be sent if sent to a Holder, to the address, fax number or email address of such Holder set forth on the signature page to this Agreement, as it may subsequently change on the Company’s books by notice from the Holder; and

If to the Company, to:        EuroSite Power Inc.
45 First Street
Waltham, MA 02451
Attention:  Chief Financial Officer
Fax No.:  (781) 622-1027
Phone No.:  (781) 622-1117

With a copy to:            Sullivan & Worcester LLP
One Post Office Square
Boston, MA 02109
Attention:  Edwin L. Miller, Jr.
Fax No.:  (617) 338-2880
Phone No.:  (617) 338-2800

Such notices or communications shall be effective when received.  If a notice or communication to a Holder is sent in the manner provided above, it is duly given, whether or not the addressee receives it.

The Company by notice to the Holders may designate additional or different addresses for subsequent notices or communications.

Failure to mail a notice or communication to a Holder or any defect in it shall not affect its sufficiency with respect to other Holders.

3.6    Amendments and Waivers.  Any term of this Agreement may be amended and the observance of any term of this Agreement may be waived (either generally or in a particular instance, and either retroactively or prospectively) only with the written consent of the Company and the Holders of a majority of the Registrable Securities; and provided further that any provision hereof may be waived by any waiving party on such party’s own behalf, without the consent of any other party.  Notwithstanding the foregoing, this Agreement may not be amended or terminated and the observance of any term hereof may not be waived with respect to any Holder without the written consent of such Holder, unless such amendment, termination, or waiver applies to all Holders in the same fashion.  The Company shall give prompt notice of any amendment or termination hereof or waiver hereunder to any party hereto that did not consent in writing to such amendment, termination, or waiver.  Any amendment, termination, or waiver effected in accordance with this Subsection 3.6 shall be binding on all parties hereto, regardless of whether any such party has consented thereto.  No waivers of or exceptions to any term, condition, or provision of this Agreement, in any one or more instances, shall be deemed to be or construed as a further or continuing waiver of any such term, condition, or provision.

3.7    Severability.  In case any one or more of the provisions contained in this Agreement is for any reason held to be invalid, illegal or unenforceable in any respect, such invalidity, illegality, or unenforceability shall not affect any other provision of this Agreement, and such invalid, illegal, or unenforceable provision shall be reformed and construed so that it will be valid, legal, and enforceable to the maximum extent permitted by law.

3.8    Aggregation of Stock.  All shares of Registrable Securities held or acquired by Affiliates shall be aggregated together for the purpose of determining the availability of any rights under this Agreement and such Affiliated Persons may apportion such rights as among themselves in any manner they deem appropriate.

3.9    Entire Agreement.  This Agreement (including any Schedules and Exhibits hereto) constitutes the full and entire understanding and agreement among the parties with respect to the subject matter hereof, and any other written or oral agreement relating to the subject matter hereof existing between the parties is expressly canceled.

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

EUROSITE POWER INC.

By: /s/ Anthony S. Loumidis 
Name: Anthony S. Loumidis 
Title: Chief Financial Officer
NOTEHOLDERS:

Counterpart signature pages attached

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