EX-10.1



 EXHIBIT 10.1 

SECURITIES PURCHASE AGREEMENT 

SECURITIES PURCHASE AGREEMENT (the “Agreement”), dated as of June 26, 2015, by and among Real Goods Solar, Inc.,
a Colorado corporation, with headquarters located at 833 West South Boulder Road, Louisville, CO 80027 (the “Company”), and the investors listed on the Schedule of Buyers attached hereto (individually, a
“Buyer” and collectively, the “Buyers”). 
 RECITALS 

A. The Company and the Buyers desire to enter into this transaction to purchase the Common Shares (as defined below) and the
Warrants (as defined below) pursuant to the Registration Statement (as defined below) which is currently effective, has at least $150,000,000 of initial offering price of unallocated securities available for sale as of the date hereof (but which is
currently subject to the limitation set forth in General Instruction I.B.6 of Form S-3) and has been declared effective in accordance with the Securities Act of 1933, as amended (the “1933 Act”), by the United States Securities and
Exchange Commission (the “SEC”). 
 B. The Warrant Shares (as defined below) shall be issued pursuant to the
Registration Statement or another registration statement, or, if the Registration Statement or such other registration statement is not available at the time of issuance of such Warrant Shares shall be issued solely pursuant to the cashless exercise
provisions of the applicable Warrant as securities exempt from registration pursuant to Section 3(a)(9) of the 1933 Act. 

C. Each Buyer wishes to purchase, and the Company wishes to sell, upon the terms and conditions stated in this Agreement
(i) that aggregate number of shares of the Company’s Class A common stock, par value $0.0001 per share (the “Common Stock”) set forth opposite such Buyer’s name in column (3) of the Schedule of Buyers
attached hereto (which aggregate amount for all Purchasers (as defined herein) shall be 1,059,817) (the “Common Shares”), (ii) that aggregate number of shares of Common Stock set forth opposite such Buyer’s name in column
(4) of the Schedule of Buyers attached hereto (which aggregate amount for all Buyers shall be 310,046) (the “Capacity Shares”), which shall be issued in escrow to the Company’s transfer agent (the Company’s transfer
agent as of the date hereof and any subsequent transfer agent of the Company, the “Transfer Agent”) in accordance with that certain escrow agreement by and between the Company and the Transfer Agent in a form acceptable to the
Required Holders (the “Securities Escrow Agreement”) and which shall be issued and delivered from time to time to the Buyers pursuant to the terms and conditions set forth in this Agreement and (iii) Series F warrants, in
substantially the form attached hereto as Exhibit A (the “Warrants”), to acquire up to that number of additional shares of Common Stock set forth opposite such Buyer’s name in column (5) of the Schedule of Buyers
(as exercised, collectively, the “Warrant Shares”). 
 D. The Common Shares, the Adjustment Shares (as
defined in Section 1(g)(i)), the Capacity Shares, the Warrants and the Warrant Shares collectively are referred to herein as the “Securities”. 







 NOW, THEREFORE, the Company and each Buyer hereby agree as follows: 

1. PURCHASE AND SALE OF COMMON SHARES AND WARRANTS; ADJUSTMENT SHARES AND CAPACITY SHARES OBLIGATION. 

(a) Incorporation of Recitals. The “recitals” set forth above shall be incorporated into, and deemed a part of
this Agreement. 
 (b) Closing. Subject to the satisfaction (or waiver) of the conditions set forth in Sections 6 and
7 below, on the Closing Date (as defined below), (i) the Company shall issue and sell to each Buyer, and each Buyer severally, but not jointly, agrees to purchase from the Company (A) the number of Common Shares in an aggregate amount as
is set forth opposite such Buyer’s name in column (3) of the Schedule of Buyers and (B) Warrants to acquire up to that number of Warrant Shares as is set forth opposite such Buyer’s name in column (5) of the Schedule of
Buyers, and (ii) the Company shall issue to the Transfer Agent the aggregate number of Capacity Shares as is set forth opposite all Buyers names in column (4) of the Schedule of Buyers, which Capacity Shares are to be issued and delivered
to the Buyers after the Closing (as defined below) from time-to-time in accordance with the terms and conditions set forth in this Agreement and up to 8,630,137 Adjustment Shares (as adjusted for any stock dividend, stock split, stock combination,
reclassification or similar transaction occurring after the date hereof) which Adjustment Shares are to be issued and delivered to the Buyers after the Closing accordance with the terms and conditions set forth in this Agreement, and which, in each
case, shall be issued in escrow to the Transfer Agent in accordance with the Securities Escrow Agreement. On the Closing Date, the Company shall issue in escrow in the name of the Transfer Agent at least the sum of (i) 8,630,137 shares of
Common Stock (as adjusted for any stock dividend, stock split, stock combination, reclassification or similar transaction occurring after the date hereof) issuable as Adjustment Shares hereunder and (ii) 310,046 shares of Common Stock (as
adjusted for any stock dividend, stock split, stock combination, reclassification or similar transaction occurring after the date hereof) issuable as Capacity Shares hereunder (collectively, the “Maximum Additional Shares”), in
accordance with the Securities Escrow Agreement. The transactions described in the foregoing sentences are collectively described as the “Closing”. Notwithstanding anything herein to the contrary, the Buyers acknowledge and agree
that certain retail investors (the “Retail Investors” and, together with the Buyers, the “Purchasers”) will be participating in the transactions contemplated hereunder on the same terms and conditions as set forth
hereunder but such participation may be obtained verbally through sub-agents retained by the Agent (as defined in Section 3(kk)) rather than through the execution of this Agreement and settlement of such accounts may occur directly with the
participating brokers. The Company hereby acknowledges and agrees that the Closing contemplated by this Agreement shall occur upon the satisfaction of the closing conditions set forth in Section 6 and 7, regardless of whether or not the Retail
Investors participate in such transactions. 
 (c) Purchase Price. The aggregate purchase price for the Common Shares,
the Capacity Shares, the Adjustment Shares (if any) and the Warrants to be purchased by each such Buyer (the “Purchase Price”) shall be the amount set forth opposite each Buyer’s name in column (6) of the Schedule of
Buyers (less, in the case of                      (the “Lead Investor”), any amounts withheld pursuant to Section 4(f)), which
shall be equal to $3.65 (as 

  
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adjusted for any stock dividend, stock split, stock combination, reclassification or similar transaction occurring after the date hereof) per Common Share and related Capacity Shares, Adjustment
Shares (if any) and Warrants to be purchased by each Buyer. 
 (d) Closing Date. The date and time of the Closing (the
“Closing Date”) shall be 10:00 a.m., New York City time, on the date hereof (or such later date as is mutually agreed to by the Company and each Buyer, but in no event later than June 30, 2015) after notification of
satisfaction (or waiver) of the conditions to the Closing set forth in Sections 6 and 7 below at the offices of Schulte Roth & Zabel LLP, 919 Third Avenue, New York, New York 10022, subject to notification of satisfaction (or waiver) of the
conditions to the Closing set forth in Sections 6 and 7 below. 
 (e) Form of Payment. On the Closing Date each Buyer
shall pay its Purchase Price (including for any Capacity Shares to be issued to such Buyer after the Closing) to the Company (less, in the case of the Lead Investor, any amounts withheld pursuant to Section 4(f)) by wire transfer of immediately
available funds to an escrow account established by the Company and the Agent with Signature Bank (or such other bank mutually agreed to by the Company and the Agent), as escrow agent, in accordance with the Company’s written wire instructions
(the “Escrow Account”), which funds shall be subject to the terms and conditions of such escrow and (ii) the Company shall deliver (A) to each Buyer (x) the Common Shares (allocated in the amounts as such Buyer shall
request) which such Buyer is then purchasing hereunder and (y) the Warrants (allocated in the amounts as such Buyer shall request) such Buyer is purchasing, and (B) to the Transfer Agent the Capacity Shares and the Adjustment Shares, in
each case duly executed on behalf of the Company and registered in the name of such Buyer or the Transfer Agent, as applicable, or their respective designee. 

(f) Escrow. Notwithstanding anything herein to the contrary or in the agreement governing the Escrow Account, if the
Closing does not occur on or prior to June 30, 2015, the Company shall, at the written request of a Buyer, promptly cause such Buyer’s Purchase Price to be returned to such Buyer pursuant to wire instructions provided in writing by such
Buyer to the Company. 
 (g) Adjustment Shares and Capacity Shares. 

(i) Obligation to Deliver Adjustment Shares. Subject to the limitations set forth in Section 1(h), the Company shall, without any
additional consideration, cause the Transfer Agent to transfer from the Transfer Agent’s Securities Escrow Account and issue, deliver and credit to such Buyer’s or its designee’s balance account with The Depository Trust Company
(“DTC”) through its Deposit / Withdrawal At Custodian system, a number of shares of Common Stock on July 10, 2015 (the “Adjustment Shares Delivery Date”) equal to the number (if positive) obtained by
subtracting (I) the number of Common Shares and Capacity Shares purchased by such Buyer on the Closing Date (in each case, as adjusted for stock splits, stock dividends, recapitalizations, reorganizations, reclassification, combinations,
reverse stock splits or other similar events) from (II) the quotient determined by dividing (x) the aggregate Purchase Price paid by such Buyer on the Closing Date, by (y) eighty-five percent (85%) of the three (3) lowest
Weighted Average Prices (as defined in the Warrants) of the Common Stock during the period commencing on the date hereof and ending on, and including, July 9, 2015 (as 

  
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adjusted for stock splits, stock dividends, recapitalizations, reorganizations, reclassification, combinations, reverse stock splits or other similar events during such period) (such shares, the
“Adjustment Shares”). On July 9, 2015, such Buyer shall be deemed for all corporate purposes to have become the holder of record of the Adjustment Shares, if any, irrespective of the date such Adjustment Shares are credited to
such Buyer’s or its designee’s DTC account. 
 (ii) Obligation to Deliver Capacity Shares. Subject to the limitations set
forth in Section 1(h), any Buyer may at any time or times on or after the Closing Date, deliver a written notice to the Company and the Transfer Agent in the form attached hereto as Exhibit C (a “Capacity Notice”) of
such Buyer’s election to receive all or any portion of the Capacity Shares set forth opposite such Buyer’s name in column (4) of the Schedule of Buyers attached hereto. Execution and delivery of a Capacity Notice with respect to less
than all of the Capacity Shares set forth opposite such Buyer’s name in column (4) of the Schedule of Buyers attached hereto shall have the effect of lowering the number of Capacity Shares still available to such Buyer under this
Agreement, if any, by the number of Capacity Shares set forth on such Capacity Notice. On or before the first (1st) Trading Day (as defined in the Warrants) following the date on which the
Company has received a Capacity Notice, the Company shall transmit by facsimile an acknowledgment of confirmation of receipt of such Capacity Notice to such Buyer and the Transfer Agent. On or before the third (3rd) Trading Day following the
date on which the Company has received a Capacity Notice (a “Capacity Shares Delivery Date”), the Company shall cause the Transfer Agent to issue, deliver and transfer from the Transfer Agent’s Securities Escrow Account and
credit to such Buyer’s or its designee’s balance account with DTC through its Deposit / Withdrawal At Custodian system, such aggregate number of Capacity Shares to which such Buyer is entitled pursuant to such Capacity Notice. Upon
delivery of a Capacity Notice, such Buyer shall be deemed for all corporate purposes to have become the holder of record of the Capacity Shares with respect to which the Capacity Notice has been delivered, irrespective of the date such Capacity
Shares are credited to such Buyer’s or its designee’s DTC account. 
 (iii) [Intentionally omitted.] 

(iv) Mechanics of Delivery. 

(1) General. The Company shall be responsible for all fees and expenses of the Transfer Agent and all fees and expenses
with respect to the delivery of Adjustment Shares and/or Capacity Shares and transfer of such shares to each Buyer’s or its designee’s balance account with DTC, if any. The Company’s obligations to cause the Transfer Agent to issue,
deliver and transfer Adjustment Shares and/or Capacity Shares to the Buyers in accordance with the terms and subject to the conditions hereof are absolute and unconditional, irrespective of any action or inaction by such Buyer to enforce the same,
any waiver or consent with respect to any provision hereof, the recovery of any judgment against any Person or any action to enforce the same, or any setoff, counterclaim, recoupment, limitation or termination. Notwithstanding anything to the
contrary contained herein, in no event will any Adjustment Shares or Capacity Shares be delivered with any restrictive legends or any restrictions or limitations on resale by the Buyers. If the Company and/or the Transfer Agent requires any legal
opinions with respect to the delivery of any Adjustment Shares or Capacity Shares without restrictive 

  
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legends or the removal of any such restrictive legends, the Company agrees to cause at its expense its legal counsel to issue any such legal opinions. The Company hereby acknowledges and agrees
that the holding period of any Adjustment Shares and Capacity Shares delivered hereunder for purposes of Rule 144 shall be deemed to have commenced on the Closing Date. For purposes of this Agreement, “Person” means an individual, a
limited liability company, a partnership, a joint venture, a corporation, a trust, an unincorporated organization and a government or any department or agency thereof. 

(2) Company’s Failure to Timely Deliver Securities. If the Company shall fail for any reason or for no reason to
credit such Buyer’s or its designee’s balance account with DTC for such number of shares of Common Stock to which such Buyer is entitled under Section 1(g), then, in addition to all other remedies available to such Buyer, the Company
shall pay in cash to such Buyer on each day after such Adjustment Shares Delivery Date or Capacity Shares Delivery Date, as applicable, that the delivery of such shares of Common Stock is not timely effected or that the Company shall fail to credit
such Buyer’s or its designee’s balance account with DTC for the number of shares of Common Stock to which such Buyer is entitled pursuant to the Company’s obligation pursuant to clause (ii) below, and if on or after such Trading
Day such Buyer (or any Person in respect of, or on behalf, of such Buyer) purchases (in an open market transaction or otherwise) shares of Common Stock to deliver in satisfaction of a sale by such Buyer all or any portion of shares of Common Stock
such Buyer anticipated receiving from the Company under this Section 1(g) (a “Buy-In”), then, in addition to all other remedies available to such Buyer, the Company shall, within three (3) Trading Days after such
Buyer’s request and in such Buyer’s discretion, either (i) pay cash to such Buyer in an amount equal to such Buyer’s total purchase price (including brokerage commissions and other out-of-pocket expenses, if any) for the shares
of Common Stock so purchased (the “Buy-In Price”), at which point the Company’s obligation to credit such Buyer’s or its designee’s balance account with DTC for such shares of
Common Stock shall terminate, or (ii) promptly honor its obligation to credit such Buyer’s or its designee’s balance account with DTC and pay cash to such Buyer in an amount equal to the excess (if any) of the Buy-In Price over the
product of (A) such number of shares of Common Stock, times (B) any trading price of the Common Stock selected by such Buyer in writing as in effect at any time during the period (I) in case the Company fails to timey deliver
Adjustment Shares, beginning on the date hereof and ending on the Adjustment Shares Delivery Date and the date of such delivery and payment under this Section 1(g)(iv)(2) and (II) in case the Company fails to timely deliver Capacity Shares,
beginning on the date of the delivery to the Company of the applicable Capacity Notice and ending on the later of the applicable Capacity Shares Delivery Date and the date of such delivery and payment under this Section 1(g)(iv)(2). Nothing
shall limit any Buyer’s right to pursue any other remedies available to it hereunder, at law or in equity, including, without limitation, a decree of specific performance and/or injunctive relief with respect to the Company’s failure to
timely electronically deliver shares of Common Stock as required pursuant to the terms hereof. 
 (3) Charges, Taxes and
Expenses. Issuance of the Adjustment Shares and Capacity Shares to the Transfer Agent and subsequent delivery thereof to the 

  
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Buyers shall be made without charge to the Buyers for any issue or transfer tax or other incidental expense in respect of such issuance and transfer, all of which taxes (other than the
Buyers’ income taxes) and expenses shall be paid by the Company, and such Adjustment Shares and Capacity Shares shall be delivered in the name of the respective Buyer or in such name or names as may be directed by the respective Buyer. 

(4) Closing of Books. The Company will not close its stockholder books or records in any manner which prevents the
timely exercise of such Buyer’s rights with respect to the Adjustment Shares and Capacity Shares. 
 (v) Certain
Adjustments.
 (1) Status of Adjustment Shares and Capacity Shares. The Company acknowledges that the Adjustment
Shares and Capacity Shares issued on or prior to the Closing Date to the Transfer Agent shall be treated as shares of Common Stock that are issued and outstanding as of such date, including, for purposes of subdivision and/or combinations of shares
of Common Stock, which will cause the number of Adjustment Shares and Capacity Shares to be proportionately increased or decreased, as applicable. 

(2) Purchase Rights. The Company shall not grant, issue or sell any Options (as defined in Section 4(n)(i)(6)),
Convertible Securities (as defined in Section 4(n)(i)(3)) or rights to purchase stock, warrants, securities or other property pro rata to the record holders of any class of Common Stock (the “Purchase Rights”), at any time
after the date hereof and prior to July 10, 2015. If the Company shall grant, issue or sell any Purchase Rights, at any time after July 10, 2015 and prior to the date of delivery of all Capacity Shares which the Company is obligated to
deliver under this Agreement, then, in each case, each Buyer shall be entitled to acquire, upon the terms applicable to such Purchase Rights, the aggregate Purchase Rights, with respect to each undelivered Capacity Share, to the same extent that
such Buyer would have participated therein with respect to each such Capacity Share if such Buyer had held such undelivered Capacity Shares (without taking into account any limitations or restrictions on the delivery of Capacity Shares, including
without limitation, the Maximum Percentage (as defined in Section 1(h))) immediately before the date on which a record is taken for the grant, issuance or sale of such Purchase Rights, or, if no such record is taken, the date as of which the
record holders of shares of Common Stock are to be determined for the grant, issue or sale of such Purchase Rights (provided, however, that to the extent that such Buyer’s right to participate in any such Purchase Right would
result in such Buyer and the other Attribution Parties exceeding the Maximum Percentage, then such Buyer shall not be entitled to participate in such Purchase Right to such extent (and shall not be entitled to beneficial ownership of such shares of
Common Stock as a result of such Purchase Right (and beneficial ownership) to such extent) and such Purchase Right to such extent shall be held in abeyance for the benefit of such Buyer until such time or times as its right thereto would not result
in such Buyer and the other Attribution Parties exceeding the Maximum Percentage, at which time or times such Buyer shall be granted such right (and any Purchase Right granted, issued or sold on such initial Purchase Right or on any subsequent
Purchase Right held similarly in abeyance) to the same extent as if there had 

  
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been no such limitation). As used herein, (I) “Attribution Parties” means, collectively, the following Persons and entities: (w) any investment vehicle, including, any
funds, feeder funds or managed accounts, currently, or from time to time after the date hereof, directly or indirectly managed or advised by such Buyer’s investment manager or any of its Affiliates or principals, (x) any direct or indirect
Affiliates of such Buyer or any of the foregoing, (y) any Person acting or who could be deemed to be acting as a Group together with such Buyer or any of the foregoing and (z) any other Persons whose beneficial ownership of the
Company’s Common Stock would or could be aggregated with such Buyer’s and the other Attribution Parties for purposes of Section 13(d) of the 1934 Act, (II) “Affiliate” has the meaning set forth in Rule 405 under the
1933 Act, and (III) “Group” means a “group” as that term is used in Section 13(d) of the 1934 Act and as defined in Rule 13d-5 thereunder. For clarity, the purpose of the foregoing is to subject collectively such
Buyer and all other Attribution Parties to the Maximum Percentage. 
 (3) Other Events. If any event occurs of the
type contemplated by the provisions of this Section 1(g)(v) but not expressly provided for by such provisions (including, without limitation, the granting of stock appreciation rights, phantom stock rights or other rights with equity features),
then the Company’s Board of Directors will make an appropriate adjustment in the number of Adjustment Shares and Capacity Shares, as mutually determined by the Company’s Board of Directors and the Required Holders (as defined in
Section 9(e)), so as to protect the rights of the Buyers; provided that no such adjustment pursuant to this Section 1(g)(v) will decrease the number of Adjustment Shares or Capacity Shares as otherwise determined pursuant to this
Section 1(g)(v). 
 (4) Pro Rata Distributions. The Company shall not declare or make any dividend or other
distributions of its assets (or rights to acquire its assets) to any or all holders of Common Stock, by way of return of capital or otherwise (including, without limitation, any distribution of cash, stock or other securities, property or options by
way of a dividend, spin off, reclassification, corporate rearrangement, scheme of arrangement or other similar transaction) (a “Distribution”), at any time after the date hereof and prior to July 10, 2015. If the Company shall
declare or make any Distribution, at any time after July 10, 2015 and prior to the date of delivery of all Capacity Shares which the Company is obligated to deliver under this Agreement then, in each such case, each Buyer shall be entitled to
participate in such Distribution, with respect to each undelivered Capacity Share, to the same extent that such Buyer would have participated therein with respect to each such Capacity Share if such Buyer had held such undelivered Capacity Shares
(without taking into account any limitations or restrictions on the delivery of Capacity Shares, including without limitation, the Maximum Percentage) immediately before the date of which a record is taken for such Distribution, or, if no such
record is taken, the date as of which the record holders of shares of Common Stock are to be determined for the participation in such Distribution (provided, however, to the extent that such Buyer’s right to participate in any
such Distribution would result in such Buyer exceeding the Maximum Percentage, then such Buyer shall not be entitled to participate in such Distribution to such extent (or in the beneficial ownership of any shares of Common Stock as a result of such
Distribution to such extent) and the portion 

  
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of such Distribution shall be held in abeyance for the benefit of such Buyer until such time, if ever, as its right thereto would not result in such Buyer exceeding the Maximum Percentage). 

(5) Fundamental Transaction. The Company shall not be a party to, or allow the occurrence or consummation of a
Fundamental Transaction (as defined in the Warrants) on or prior to the Adjustment Shares Delivery Date. If, at any time after the date hereof and until the date any Capacity Shares may be delivered hereunder, a Fundamental Transaction occurs or is
consummated, the Company shall cause any Successor Entity (as defined in the Warrants) to assume in writing all of the obligations of the Company under this Section 1(g) in accordance with the provisions of this Section 1(g)(v)(5) pursuant
to written agreements in form and substance reasonably satisfactory to the Required Holders and approved by the Required Holders, such approval not to be unreasonably withheld or delayed, prior to such Fundamental Transaction, such that for each
Capacity Share otherwise deliverable under Section 1(g) not delivered prior to the date of the occurrence or consummation of such Fundamental Transaction, such Buyer shall be entitled to receive a corresponding number of shares of capital stock
of the successor or acquiring corporation or of the Company, if it is the surviving corporation (but taking into account the relative value of the shares of Common Stock pursuant to such Fundamental Transaction and the value of such shares of
capital stock, such adjustments to the number of shares of capital stock being for the purpose of protecting the economic value of the Capacity Shares immediately prior to the occurrence or consummation of such Fundamental Transaction)
(provided, however, to the extent that such Buyer’s right to receive any such shares of publicly traded common stock (or their equivalent) of the Successor Entity would result in such Buyer and its other Attribution Parties
exceeding the Maximum Percentage, if applicable, then such Buyer shall not be entitled to receive such shares to such extent (and shall not be entitled to beneficial ownership of such shares of publicly traded common stock (or their equivalent) of
the Successor Entity as a result of such consideration to such extent) and the portion of such shares shall be held in abeyance for such Buyer until such time or times, as its right thereto would not result in such Buyer and its other Attribution
Parties exceeding the Maximum Percentage, at which time or times such Buyer shall be delivered such shares to the extent as if there had been no such limitation), and any additional consideration (the “Alternate Consideration”)
receivable as a result of such Fundamental Transaction by a holder of shares of Common Stock immediately prior to such Fundamental Transaction. If holders of Common Stock are given any choice as to the securities, cash or property to be
received in a Fundamental Transaction, then such Buyer shall be given the same choice as to the Alternate Consideration it receives upon the delivery of Capacity Shares following such Fundamental Transaction. Upon the occurrence or consummation of
any Fundamental Transaction, and it shall be a required condition to the occurrence or consummation of any Fundamental Transaction that, the Company and the Successor Entity or Successor Entities, jointly and severally, shall succeed to, and the
Company shall cause any Successor Entity or Successor Entities to jointly and severally succeed to, and be added to the term “Company” under this Agreement (so that from and after the date of such Fundamental Transaction, and the
provisions of this Agreement referring to the “Company” shall refer instead to each of the Company and the Successor Entity or Successor Entities, jointly and severally), and the Company and the Successor


  
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Entity or Successor Entities, jointly and severally, may exercise every right and power of the Company prior thereto and shall assume all of the obligations of the Company prior thereto under
this Agreement with the same effect as if the Company and such Successor Entity or Successor Entities, jointly and severally, had been named as the Company in this Agreement. The Company shall provide each Buyer with written notice, including a
summary of material terms, of any Fundamental Transaction described in the preceding sentence no less than fifteen (15) days prior to the occurrence or consummation such Fundamental Transaction, provided that if the Company does not have
knowledge of such Fundamental Transaction or material terms thereof at least fifteen (15) days prior to the occurrence or consummation of such Fundamental Transaction, the Company shall provide written notice, including a summary of material
terms, within two (2) Trading Days of having such knowledge.
 (6) Calculations. All calculations under this
Section 1(g) shall be made to the nearest cent or the nearest 1/100th of a share. For purposes of this Section 1(g), the number of shares of Common Stock deemed to be issued and outstanding as of a given date shall be the sum of the number
of shares of Common Stock (excluding treasury shares, if any, but including, without limitation, the Maximum Additional Shares) issued and outstanding. 

(7) Notice to Buyers. 

(A) Adjustment to Number of Adjustment Shares or Capacity Shares. Whenever there is an adjustment pursuant to any provision
of Section 1(g)(v), the Company shall promptly notify each Buyer by providing a notice setting forth the adjustment to the number of Adjustment Shares or Capacity Shares and setting forth a brief statement of the facts requiring such
adjustment. 
 (B) Notice of Certain Events. If (A) the Company shall declare a dividend (or any other distribution in
whatever form) on the Common Stock, (B) the Company shall declare a special nonrecurring cash dividend on or a redemption of the Common Stock, (C) the Company shall authorize the granting to all holders of the Common Stock rights or
warrants to subscribe for or purchase any shares of capital stock of any class or of any rights, (D) the approval of any stockholders of the Company shall be required in connection with any Fundamental Transaction whereby the Common Stock are
converted into other securities, cash or property, or (E) the Company shall authorize the voluntary or involuntary dissolution, liquidation or winding up of the affairs of the Company, in each case until the date any Adjustment Shares and/or
Capacity Shares may be delivered hereunder, then, in each case, the Company shall notify each Buyer at its last address, at least twenty (20) calendar days prior to the applicable record or effective date hereinafter specified, a notice stating
(x) the date on which a record is to be taken for the purpose of such dividend, distribution, redemption, rights or warrants, or if a record is not to be taken, the date as of which the holders of the Common Stock of record to be entitled to
such dividend, distributions, redemption, rights or warrants are to be determined or (y) the date on which such Fundamental Transaction is expected to become effective or close, and the date as of which it is expected that holders of the Common
Stock of record shall be entitled to exchange their shares of the Common Stock for securities, cash or other property deliverable upon such Fundamental Transaction; provided that the failure to mail such notice or any defect therein or in the
mailing 

  
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thereof shall not affect the validity of the corporate action required to be specified in such notice. To the extent that any notice provided hereunder constitutes, or contains, material,
non-public information regarding the Company or any of its subsidiaries, the Company shall simultaneously file such notice with the SEC pursuant to a Current Report on Form 8-K. On or prior to July 9, 2015, the Company shall file with the SEC
on a Current Report on Form 8-K disclosing the number of Adjustment Shares delivered or deliverable on such date (each, an “Additional 8-K Filing”). From and after the filing of an Additional 8-K Filing with the SEC, no Buyer shall
be in possession of any material, nonpublic information received from the Company, any of its Subsidiaries or any of their respective officers, directors, employees or agents, that is not disclosed in such Adjustment 8-K Filing. 

(vi) Dispute Resolution. In the case of a dispute as to the determination of the number of Adjustment Shares or Capacity Shares
deliverable hereunder and/or the amount of cash payable hereunder, the Company shall submit the disputed determinations or arithmetic calculations via facsimile within two (2) Business Days of event giving rise to such dispute, as the case may
be, to the Buyers. If a Buyer and the Company are unable to agree upon such determination or calculation of the number of shares of Common Stock deliverable within three (3) Business Days of such disputed determination or arithmetic
calculation being submitted to the Buyers, then the Company shall, within two (2) Business Days submit via facsimile (a) the disputed determination of the number of Adjustment Shares and/or Capacity Shares and/or the amount of cash to an
independent, reputable investment bank selected by the Required Holders and approved by the Company, such approval not to be unreasonably withheld or delayed or (b) the disputed arithmetic calculation of the number of Adjustment Shares and/or
Capacity Shares and/or the amount of cash to the Company’s independent, outside accountant. The Company shall cause at its expense the investment bank or the accountant, as the case may be, to perform the determinations or calculations and
notify the Company and the applicable Buyer(s) of the results no later than ten (10) Business Days from the time it receives the disputed determinations or calculations. Such investment bank’s or accountant’s determination or
calculation, as the case may be, shall be binding upon all parties absent demonstrable error. As used herein, “Business Day” means any day other than Saturday, Sunday or other day on which commercial banks in The City of New York
are authorized or required by law to remain closed. 
 (h) Blocker. Notwithstanding anything to the contrary contained
herein, the Company shall not deliver Adjustment Shares or Capacity Shares, and no Buyer shall have the right to receive Adjustment Shares or Capacity Shares, and any such delivery shall be null and void and treated as if never made, to the extent
that after giving effect to such delivery, such Buyer (together with the other Attribution Parties) would beneficially own in excess of 9.99% (the “Maximum Percentage”) of the number of shares of Common Stock outstanding immediately
after giving effect to such delivery. For purposes of the foregoing sentence, the aggregate number of shares of Common Stock beneficially owned by such Buyer and the other Attribution Parties shall include the number of shares of Common Stock held
by such Buyer and all other Attribution Parties plus the number of Adjustment Shares and Capacity Shares delivered to such Buyer pursuant to Section 1(g) hereof with respect to which the determination of such sentence is being made, but shall
exclude the number of shares of Common Stock which would be issuable upon (i) exercise of the remaining, unexercised portion of the Warrants beneficially owned by such Buyer or any of the other Attribution Parties and (ii) exercise or


  
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conversion of the unexercised or unconverted portion of any other securities of the Company beneficially owned by such Buyer or any of the other Attribution Parties (including, without
limitation, any convertible notes or convertible preferred stock or warrants) subject to a limitation on conversion or exercise analogous to the limitation contained herein. For purposes of this paragraph, beneficial ownership shall be calculated in
accordance with Section 13(d) of the Securities Exchange Act of 1934, as amended (the “1934 Act”). For purposes of determining the number of outstanding shares of Common Stock, the Buyers may rely on the number of outstanding
shares of Common Stock as reflected in (1) the Company’s most recent Annual Report on Form 10-K, Quarterly Report Form 10-Q, Current Report on Form 8-K or other public filing with the SEC, as the case may be, (2) a more recent public
announcement by the Company or (3) any other written notice by the Company or the Transfer Agent setting forth the number of shares of Common Stock outstanding (the “Reported Outstanding Share Number”). If at any time until
July 9, 2015 and/or if the Company receives a Capacity Notice from such Buyer at a time when the actual number of outstanding shares of Common Stock is less than the Reported Outstanding Share Number the actual number of outstanding shares of
Common Stock is less than the Reported Outstanding Share Number, the Company shall promptly notify the Buyers in writing of the number of shares of Common Stock then outstanding. For any reason at any time, upon the written or oral request of a
Buyer, the Company shall within one (1) Business Day confirm orally and in writing or by electronic mail to such Buyer the number of shares of Common Stock then outstanding. In any case, the number of outstanding shares of Common Stock shall be
determined after giving effect to the conversion or exercise of securities of the Company, including the Warrants, held by each Buyer and the other Attribution Parties since the date as of which the Reported Outstanding Share Number was reported. In
the event that the delivery of Adjustment Shares or Capacity Shares to such Buyer results in such Buyer and the other Attribution Parties being deemed to beneficially own, in the aggregate, more than the Maximum Percentage of the number of
outstanding shares of Common Stock (as determined under Section 13(d) of the 1934 Act), the number of shares so delivered by which such Buyer’s and the other Attribution Parties’ aggregate beneficial ownership exceeds the Maximum
Percentage (the “Excess Shares”) shall be deemed null and void and shall be cancelled ab initio, and such Buyer shall not have the power to vote or to transfer the Excess Shares. If a Buyer’s right to receive Adjustment Shares
is limited, in whole or in part, by this Section, all such Adjustment Shares that are so limited shall be held in abeyance for the benefit of such Buyer by the Company until such time, if ever, as such Buyer notifies the Company that its right
thereto would not result in such Buyer exceeding the Maximum Percentage and the Company shall promptly after receiving such notice issue and deliver to such Buyer such Adjustment Shares. By written notice to the Company, each Buyer may from time to
time increase (with such increase not effective until the sixty-first (61st) day after delivery of such notice) or decrease the Maximum Percentage to any other percentage not in excess of
9.99% as specified in such notice; provided that (i) any such increase in the Maximum Percentage will not be effective until the sixty-first (61st) day after such notice is delivered to
the Company and (ii) any such increase or decrease will apply only to such Buyer and the other Attribution Parties and not to any of the other Buyers that is not an Attribution Party of such Buyer. For purposes of clarity, the Adjustment Shares
and Capacity Shares deliverable pursuant to the terms hereof in excess of the Maximum Percentage shall not be deemed to be beneficially owned by such Buyer for any purpose including for purposes of Section 13(d) or Rule 16a-1(a)(1) of the 1934
Act. The provisions of this paragraph shall be 

  
 11 








 
construed and implemented in a manner otherwise than in strict conformity with the terms of this Section 1(h) to the extent necessary to correct this paragraph or any portion of this
paragraph which may be defective or inconsistent with the intended beneficial ownership limitation contained in this Section 1(h) or to make changes or supplements necessary or desirable to properly give effect to such limitation. The
limitation contained in this paragraph may not be waived and shall apply to a successor of such Buyer. 
 2. BUYER’S REPRESENTATIONS
AND WARRANTIES. Each Buyer, severally and not jointly, represents and warrants with respect to only itself that: 
 (a)
Organization; Authority. Such Buyer is an entity duly organized, validly existing and in good standing under the laws of the jurisdiction of its organization with the requisite power and authority to enter into and to consummate the
transactions contemplated by this Agreement and otherwise to carry out its obligations hereunder and thereunder. The execution, delivery and performance by such Buyer of the transactions contemplated by this Agreement has been duly authorized by all
necessary action on the part of such Buyer. This Agreement has been duly executed by such Buyer, and when delivered by such Buyer in accordance with the terms hereof, will constitute the valid and legally binding obligation of such Buyer,
enforceable against it in accordance with its terms, except as such enforceability may be limited by general principles of equity or applicable bankruptcy, insolvency, reorganization, moratorium, liquidation or similar laws relating to, or affecting
generally, the enforcement of applicable creditors’ rights and remedies. 
 (b) No Conflicts. The execution,
delivery and performance by such Buyer of this Agreement and the consummation by such Buyer of the transactions contemplated hereby will not (i) result in a violation of the organizational documents of such Buyer or (ii) conflict with, or
constitute a default (or an event which with notice or lapse of time or both would become a default) under, or give to others any rights of termination, amendment, acceleration or cancellation of, any agreement, indenture or instrument to which such
Buyer is a party, or (iii) result in a violation of any law, rule, regulation, order, judgment or decree (including federal and state securities laws) applicable to such Buyer, except in the case of clauses (ii) and (iii) above, for
such conflicts, defaults, rights or violations which would not, individually or in the aggregate, reasonably be expected to have a material adverse effect on the ability of such Buyer to perform its obligations hereunder. 

(c) No Agent Information. Such Buyer acknowledges and agrees that neither the Agent nor any Affiliate of the Agent has
provided such Buyer with any information or advice with respect to the Securities nor is such information or advice necessary or desired. In connection with the issuance of the Securities to such Buyer, neither the Agent nor any of its Affiliates
has acted as a financial advisor or fiduciary to such Buyer. 
 (d) Buyer Status. Such Buyer is an “accredited
investor,” as defined in Rule 501(a) promulgated under the 1933 Act, and is a “qualified purchaser” under Section 18 of the 1933 Act. 

  
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 3. REPRESENTATIONS AND WARRANTIES OF THE COMPANY. The Company represents and warrants to
each of the Buyers that, as of the date hereof and as of the Closing Date: 
 (a) Shelf Registration Statement. 

(i) The Company has prepared and filed in conformity with the requirements of the 1933 Act and the published rules and regulations
thereunder (the “Rules and Regulations”) adopted by the SEC a “shelf” registration statement on Form S-3 (No. 333-193718), which became effective on February 10, 2014, including a base prospectus, (the
“Base Prospectus”) relating to Common Stock, preferred stock, warrants, rights, debt securities or units of the Company that may be sold from time to time by the Company, in accordance with Rule 415 of the 1933 Act, and such
amendments thereof as may have been required to the date of this Agreement. The term “Registration Statement” as used in this Agreement means such registration statement, including all exhibits, financial schedules and all documents
and information deemed to be part of the Registration Statement by incorporation by reference or otherwise, as amended from time to time, including the information (if any) contained in the form of final prospectus filed with the SEC pursuant to
Rule 424(b) of the Rules and Regulations and deemed to be part thereof at the time of effectiveness pursuant to Rules 430A and 430B of the Rules and Regulations. The term “Preliminary Prospectus” means the Base Prospectus, together
with any preliminary prospectus supplement used or filed with the SEC pursuant to Rule 424 of the Rules and Regulations. The term “Prospectus” means the Base Prospectus, any Preliminary Prospectus and any amendments or further
supplements to such prospectus filed with the SEC, and including, without limitation, the final prospectus supplement (the “Prospectus Supplement”), filed pursuant to and within the limits described in Rule 424(b) with the SEC in
connection with the proposed sale of the Securities contemplated by this Agreement through the date of such prospectus supplement. Unless otherwise stated herein, any reference herein to the Registration Statement, any Preliminary Prospectus, the
Statutory Prospectus (as hereinafter defined) and the Prospectus shall be deemed to refer to and include the documents incorporated by reference therein, including pursuant to Item 12 of Form S-3 under the 1933 Act, which were filed under the
1934 Act, on or before the date hereof or are so filed hereafter. Any reference herein to the terms “amend,” “amendment” or “supplement” with respect to the Registration Statement, any Preliminary Prospectus, the
Statutory Prospectus or the Prospectus shall be deemed to refer to and include any such document filed or to be filed under the 1934 Act after the date of the Registration Statement, any such Preliminary Prospectus, Statutory Prospectus or
Prospectus, as the case may be, and deemed to be incorporated therein by reference. 
 (ii) The Company was at the time of the
filing of the Registration Statement eligible to use Form S-3. As of the date of this Agreement, the Company is eligible to use Form S-3 under the 1933 Act and it meets the transaction requirements with respect to the aggregate market value of
securities being sold pursuant to this offering and during the twelve (12) months prior to this offering, in accordance with General Instruction I.B.6 of Form S-3. The aggregate market value of securities sold by or on behalf of the Company
pursuant to Instruction I.B.6. during the period of twelve (12) calendar months immediately prior to, and including, the securities to be issued and sold pursuant to this Agreement is no more than one-third of the aggregate market value of the
voting and non-voting common equity held by non-Affiliates of 

  
 13 








 
the Company The Company filed with the SEC the Registration Statement on such Form S-3, including a Base Prospectus, for registration under the 1933 Act of the offering and sale of the
Securities, and the Company has prepared and used a Preliminary Prospectus in connection with the offer and sale of the Securities. When the Registration Statement or any amendment thereof or supplement thereto was or is declared effective and as of
the date of the most recent amendment to the Registration Statement, it (i) complied or will comply, in all material respects, with the requirements of the 1933 Act and the Rules and Regulations and the 1934 Act and the rules and regulations of
the SEC thereunder and (ii) did not or will not, contain any untrue statement of a material fact or omit to state any material fact required to be stated therein or necessary in order to make the statements therein not misleading. When any
Preliminary Prospectus or Prospectus was first filed with the SEC (whether filed as part of the Registration Statement or any amendment thereto or pursuant to Rule 424 of the Rules) and when any amendment thereof or supplement thereto was first
filed with the SEC, such Preliminary Prospectus or Prospectus as amended or supplemented complied in all material respects with the applicable provisions of the 1933 Act and the Rules and Regulations and did not or will not, contain any untrue
statement of a material fact or omit to state any material fact required to be stated therein or necessary in order to make the statements therein not misleading. Notwithstanding the forgoing, the Company makes no representations or warranties as to
information contained in or omitted from any Preliminary Prospectus or Prospectus, in reliance upon, and in conformity with, written information furnished to the Company by or on behalf of the Buyers, specifically for use therein. 

(b) Prospectus. As of the Applicable Time (as defined below) and as of the Closing Date, neither (x) the General
Use Free Writing Prospectus(es) (as defined below) issued at or prior to the Applicable Time, the Statutory Prospectus (as defined below), all considered together (collectively, the “General Disclosure Package”), nor (y) any
individual Limited Use Free Writing Prospectus (as defined below), when considered together with the General Disclosure Package, included, includes or will include any untrue statement of a material fact or omitted, omits or will omit to state a
material fact necessary in order to make the statements therein, in the light of the circumstances under which they were made, not misleading; provided, however, that the Company makes no representations or warranties as to information
contained in or omitted from any Issuer Free Writing Prospectus, in reliance upon, and in conformity with, written information furnished to the Company by or on behalf of the Buyers, specifically for use therein. As used in this subsection and
elsewhere in this Agreement: 
 (i) “Applicable Time” means 5:30 p.m. (New York time) on the date of this Agreement or
such other time as agreed to by the Company and the Buyers. 
 (ii) “Statutory Prospectus” as of any time means the
Preliminary Prospectus included in the Registration Statement immediately prior to that time. 
 (iii) “Issuer Free Writing
Prospectus” means any “issuer free writing prospectus,” as defined in Rule 433 under the 1933 Act, relating to the Securities in the form filed or required to be filed with the SEC or, if not required to be filed, in the form
retained in the Company’s records pursuant to Rule 433(g) under the 1933 Act. 

  
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 (iv) “General Use Free Writing Prospectus” means any Issuer Free Writing
Prospectus that is identified on Schedule I to this Agreement. 
 (v) “Limited Use Free Writing Prospectus” means any
Issuer Free Writing Prospectus that is not a General Use Free Writing Prospectus. 
 (c) Organization. Each of the
Company and its “Subsidiaries” (which, for the purposes of this Agreement means any entity or joint venture which the Company, directly or indirectly, owns any of the capital stock or holds an equity or similar interest) are
entities duly organized and validly existing in good standing under the laws of the jurisdiction in which they are formed, and have requisite power and authorization to own or lease their properties and conduct their business as now being conducted
and as described in the Registration Statement, the General Disclosure Package and the Prospectus. The Company’s significant Subsidiaries (as such term is defined in Rule 1-02 of Regulation S-X promulgated by the SEC) include (i) those
listed in Exhibit 21.1 to the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2014 (the “Annual Report”), other than Real Goods Syndicated, Inc., which has liquidated its assets since
December 31, 2013, and (ii) Real Goods Solar, Inc. – Mercury Energy, Inc., which were acquired or formed after December 31, 2013. The Subsidiaries are the only subsidiaries, direct or indirect, of the Company. The Subsidiaries
set forth on Schedule 3(c) under the heading “Significant Subsidiaries” are referred to herein as the “Significant Subsidiaries.” The Subsidiaries which are not Significant Subsidiaries are not significant
subsidiaries as defined in Rule 1-02 of Regulation S-X. The Company and each of the Subsidiaries are duly qualified as a foreign entity to do business and is in good standing in every jurisdiction in which its ownership of property or the nature of
the conduct of their business makes such qualification necessary, except to the extent that the failure to be so qualified or be in good standing would not reasonably be expected to have a Material Adverse Effect. As used in this Agreement,
“Material Adverse Effect” means any material adverse effect on (i) the business, properties, assets, operations, results of operations, condition (financial or otherwise) or prospects of the Company and its Subsidiaries,
individually or taken as a whole, (ii) the transactions contemplated hereby or in the other Transaction Documents, or (iii) the authority or the ability of the Company to perform its obligations under this Agreement or the other
Transaction Documents or to consummate any transactions contemplated by this Agreement or the other Transaction Documents. The outstanding shares of capital stock of each of the Subsidiaries have been duly authorized and validly issued, are fully
paid and non-assessable and are owned by the Company or another Subsidiary free and clear of all liens, encumbrances and equities and claims, except as described in the Registration Statement and the Annual Report; and, except as set forth in the
Registration Statement and the Prospectus, no options, warrants or other rights to purchase, agreements or other obligations to issue or other rights to convert any obligations into shares of capital stock or ownership interests in the Subsidiaries
are outstanding. 
 (d) Authorization; Enforcement; Validity. The Company has the requisite corporate power and
authority to enter into and perform its obligations under this Agreement, the Irrevocable Transfer Agent Instructions (as defined in Section 5(b)), the Warrants, the Securities Escrow Agreement and each of the other agreements entered into by
the parties hereto in connection with the transactions contemplated by this Agreement (collectively, the “Transaction Documents”) and to issue the Securities, in accordance with the terms hereof and


  
 15 








 
thereof. The execution and delivery of the Transaction Documents by the Company and the consummation by the Company of the transactions contemplated hereby and thereby, including, without
limitation, the issuance of the Warrants, the reservation for issuance and the issuance of the Common Shares, the Adjustment Shares and the Capacity Shares in accordance with the terms and conditions of this Agreement and the reservation for
issuance and the issuance of the Warrant Shares issuable upon exercise of the Warrants have been duly authorized by the Company’s Board of Directors, and, no further filing, consent, or authorization is required by the Company, its Board of
Directors or its shareholders. This Agreement and the other Transaction Documents have been duly executed and delivered by the Company, and constitute the legal, valid and binding obligations of the Company, enforceable against the Company in
accordance with their respective terms, except as such enforceability may be limited by general principles of equity or applicable bankruptcy, insolvency, reorganization, moratorium, liquidation or similar laws relating to, or affecting generally,
the enforcement of applicable creditors’ rights and remedies. 
 (e) Issuance of Securities. The outstanding
shares of Common Stock of the Company have been duly authorized and validly issued and are fully paid and non-assessable; the Securities to be issued and sold by the Company have been duly authorized and when issued and paid for as contemplated
herein in accordance with the terms of the Transaction Documents will be free from all taxes, liens and charges with respect to the issue thereof, validly issued, fully paid and non-assessable; and no preemptive rights of shareholders exist with
respect to any of the Securities or the issue and sale thereof. As of the Closing, a number of shares of Common Stock shall have initially been duly authorized and reserved for issuance which equals the maximum number of shares of Common Stock
issuable upon exercise of the Warrants then outstanding (without taking into account any limitations on the exercise of the Warrants set forth in the Warrants) (such number of shares, the “Required Reserve Amount”). As of the date
hereof, there are 6,923,843 shares of Common Stock authorized and unissued. Neither the offering nor sale of the Securities as contemplated by this Agreement gives rise to any rights, other than those which have been waived or satisfied, for or
relating to the registration of any shares of Common Stock. The Common Shares, the Adjustment Shares, the Capacity Shares and, upon exercise of the Warrants in accordance with the terms thereof, the Warrant Shares will be validly issued, fully paid
and nonassessable and free from all preemptive or similar rights, taxes, liens and charges with respect to the issue thereof, with the holders being entitled to all rights accorded to a holder of Common Stock. Except as set forth in the Registration
Statement and the Prospectus, there are no securities or instruments issued by the Company containing anti-dilution or similar provisions that will be triggered by the issuance of the Securities. 

(f) Equity Capitalization. The Company has or will have, as the case may be, an authorized, issued and outstanding
capitalization as is set forth in the Registration Statement and the Prospectus (subject, in each case, to the issuance of shares of Common Stock upon exercise of stock options and warrants disclosed as outstanding in the Registration Statement and
the Prospectus and the grant or issuance of options or shares under existing equity compensation plans or stock purchase plans described in the Registration Statement or the Prospectus), and such authorized capital stock conforms to the description
thereof set forth in the Registration Statement and the Prospectus. Except as disclosed on Schedule 3(f) hereto, in the Registration Statement or the Prospectus (i) none of the Company’s capital stock is subject to preemptive


  
 16 








 
rights or any other similar rights or any liens or encumbrances suffered or permitted by the Company; (ii) there are no outstanding options, warrants, scrip, rights to subscribe to, calls or
commitments of any character whatsoever relating to, or securities or rights convertible into, or exercisable or exchangeable for, any shares of capital stock of the Company or any of its Subsidiaries, or contracts, commitments, understandings or
arrangements by which the Company or any of its Subsidiaries is or may become bound to issue additional shares of capital stock of the Company or any of its Subsidiaries or options, warrants, scrip, rights to subscribe to, calls or commitments of
any character whatsoever relating to, or securities or rights convertible into, or exercisable or exchangeable for, any shares of capital stock of the Company or any of its Subsidiaries; (iii) there are no material outstanding debt securities,
notes, credit agreements, credit facilities or other agreements, documents or instruments evidencing Indebtedness (as defined below) of the Company or any of its Subsidiaries or by which the Company or any of its Subsidiaries is or may become bound;
(iv) there are no financing statements securing obligations in any material amounts, either singly or in the aggregate, filed in connection with the Company or any of its Subsidiaries; (v) there are no agreements or arrangements under
which the Company or any of its Subsidiaries is obligated to register the sale of any of their securities under the 1933 Act; (vi) there are no outstanding securities or instruments of the Company or any of its Subsidiaries which contain any
redemption or similar provisions, and there are no contracts, commitments, understandings or arrangements by which the Company or any of its Subsidiaries is or may become bound to redeem a security of the Company or any of its Subsidiaries;
(vii) there are no securities or instruments containing anti-dilution or similar provisions that will be triggered by the issuance of the Securities; (viii) the Company does not have any stock appreciation rights or “phantom
stock” plans or agreements or any similar plan or agreement; and (ix) the Company and its Subsidiaries have no liabilities or obligations required to be disclosed in the SEC Documents but not so disclosed in the SEC Documents, other than
those incurred in the ordinary course of the Company’s or any of its Subsidiary’s’ respective businesses and which, individually or in the aggregate, do not or would not have a Material Adverse Effect. The Company has furnished or
made available to the Buyers true, correct and complete copies of the Company’s Articles of Incorporation, as amended and as in effect on the date hereof (the “Articles of Incorporation”), and the Company’s Bylaws, as
amended and as in effect on the date hereof (the “Bylaws”), and the terms of all securities convertible into, or exercisable or exchangeable for shares of Common Stock and the material rights of the holders thereof in respect
thereto. All of the Securities conform to the description thereof contained in the Registration Statement and the Prospectus. The form of certificates for the Common Shares and the Warrant Shares, as applicable, will conform to the corporate law of
the jurisdiction of the Company’s incorporation. 
 (g) Disclosure. 

(i) The SEC has not issued an order preventing or suspending the use of any Preliminary Prospectus, any Issuer Free Writing Prospectus or the
Prospectus relating to the proposed offering of the Securities, and no proceeding for that purpose or pursuant to Section 8A of the 1933 Act has been instituted or, to the Company’s Knowledge threatened by the SEC.
“Knowledge” in this Agreement shall refer to what any named executive officer of the Company actually knows or reasonably should know. The Registration Statement conforms, and the Prospectus and any amendments or supplements thereto
will conform to the requirements of the 1933 Act and the Rules and Regulations. The documents incorporated, or to be incorporated, by 

  
 17 








 
reference in the Prospectus (but not the exhibits or schedules thereto), at the time filed with the SEC conformed in all material respects, or will conform in all respects, to the requirements of
the 1934 Act, or the 1933 Act, as applicable, and the Rules and Regulations. The Registration Statement and any amendments and supplements thereto do not contain, and on the Closing Date, will not contain any untrue statement of a material fact and
do not omit, and on the Closing Date will not omit, to state a material fact required to be stated therein or necessary to make the statements therein not misleading. The Prospectus and any amendments and supplements thereto do not contain, and on
the Closing Date will not contain, any untrue statement of a material fact; and do not omit, and on the Closing Date will not omit, to state a material fact necessary in order to make the statements therein, in the light of the circumstances under
which they were made, not misleading, provided, however, that the Company makes no representations or warranties as to information contained in or omitted from the Prospectus, in reliance upon, and in conformity with, written
information furnished to the Company by or on behalf of the Buyers, specifically for use therein. 
 (ii) Each Issuer Free Writing
Prospectus, as of its issue date and at all subsequent times through the completion of the public offer and sale of the Securities or until any earlier date that the Company notified or notifies the Buyers as described in the next sentence, did not,
does not and will not include any information that conflicted, conflicts or will conflict with the information contained in the Registration Statement or the Prospectus, including any document incorporated by reference therein that has not been
superseded or modified. If at any time following issuance of an Issuer Free Writing Prospectus, there occurred or occurs an event or development as a result of which such Issuer Free Writing Prospectus included or would include an untrue statement
of a material fact or omitted or would omit to state a material fact necessary in order to make the statements therein, in light of the circumstances, not misleading, the Company has notified or will notify promptly the Buyers so that any use of
such Issuer Free Writing Prospectus may cease until it is amended or supplemented. 
 (iii) The Company confirms that neither it nor any
other Person acting at its direction has provided any of the Buyers or their agents or counsel with any information that constitutes or could reasonably be expected to constitute material, nonpublic information, which immediately after the Press
Release (as defined in Section 4(h)), has not otherwise been publically disclosed. The Company understands and confirms that each of the Buyers will rely on the foregoing representations in effecting transactions in securities of the Company.
All disclosure provided to the Buyers regarding the Company, or any of its Subsidiaries, their business and the transactions contemplated hereby furnished by or on behalf of the Company is true and correct and does not contain any untrue statement
of a material fact or omit to state any material fact necessary in order to make the statements made therein, in the light of the circumstances under which they were made, not misleading. Each press release issued by the Company or any of its
Subsidiaries during the twelve (12) months preceding the date of this Agreement did not at the time of release contain any untrue statement of a material fact or omit to state a material fact required to be stated therein or necessary in order
to make the statements therein, in the light of the circumstances under which they were made, not misleading. No event or circumstance has occurred or information exists with respect to the Company or any of its Subsidiaries or its or their
business, properties, prospects, operations or financial conditions, which, under applicable law, rule or regulation, requires public disclosure or announcement by the Company but which has not been so publicly announced or disclosed. The Company


  
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acknowledges and agrees that no Buyer makes or has made any representations or warranties with respect to the transactions contemplated hereby other than those specifically set forth in
Section 2. 
 (h) Offering Materials. The Company has not, directly or indirectly, distributed and will not
distribute any offering material in connection with the offering and sale of the Securities other than any Preliminary Prospectus, the Prospectus, any Issuer Free Writing Prospectus and other materials, if any, permitted under the 1933 Act. The
Company will file with the SEC all Issuer Free Writing Prospectuses in the time required under Rule 433(d) under the 1933 Act. The Company has satisfied or will satisfy the conditions in Rule 433 under the 1933 Act to avoid a requirement to file
with the SEC any electronic road show. 
 (i) Ineligible Issuer Status. At the time of filing the Registration
Statement and (ii) as of the date hereof (with such date being used as the determination date for purposes of this clause (ii)), the Company was not and is not an “ineligible issuer” (as defined in Rule 405 under the 1933 Act, without
taking into account any determination by the SEC pursuant to Rule 405 under the 1933 Act that it is not necessary that the Company be considered an ineligible issuer), including, without limitation, for purposes of Rules 164 and 433 under the 1933
Act with respect to the offering of the Securities as contemplated by the Registration Statement. 
 (j) Financial
Statements. The consolidated financial statements of the Company and the Subsidiaries, together with related notes and schedules as set forth or incorporated by reference in the Registration Statement, the General Disclosure Package and the
Prospectus, present fairly in all material respects the financial position of the Company and the consolidated Subsidiaries and the results of operations and cash flows of the Company and the consolidated Subsidiaries, at the indicated dates and for
the indicated periods. Such consolidated financial statements and related schedules have been prepared in accordance with United States generally accepted accounting principles, consistently applied throughout the periods involved
(“GAAP”), except as disclosed therein, and all adjustments necessary for a fair presentation of results for such periods have been made. The summary and selected consolidated financial and statistical data included or incorporated
by reference in the Registration Statement, the General Disclosure Package and the Prospectus presents fairly in all material respects the information shown therein, at the indicated dates and for the indicated periods, and such data has been
compiled on a basis consistent with the financial statements presented therein and the books and records of the Company. All disclosures, if any, contained in the Registration Statement, the General Disclosure Package and the Prospectus regarding
“non-GAAP financial measures” (as such term is defined by the Rules and Regulations) comply in all material respects with Regulation G of the 1934 Act and Item 10 of Regulation S-K under the 1933 Act, to the extent applicable. The
Company and the Subsidiaries do not have any material liabilities or obligations, direct or contingent (including any off-balance sheet obligations or any “variable interest entities” within the meaning of Financial Accounting Standards
Board Interpretation No. 46), not disclosed in the Registration Statement, the General Disclosure Package and the Prospectus. There are no financial statements (historical or pro forma) that are required to be included in the Registration
Statement, the General Disclosure Package or the Prospectus that are not included as required. No other information provided by or at the direction of the Company to the Buyers which is not included in the SEC Documents (as defined below) contains
any untrue statement of a material fact or omits to state any material fact necessary in order to make the statements therein, in the light of the circumstance under which they are or were made, not misleading. 

  
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 (k) Accountants. Hein & Associates LLP, who have certified
certain of the financial statements filed with the SEC as part of, or incorporated by reference in, the Registration Statement, the General Disclosure Package and the Prospectus, has represented to the Company that it is an independent registered
public accounting firm with respect to the Company and the Subsidiaries within the meaning of the 1933 Act and the applicable Rules and Regulations and the Public Company Accounting Oversight Board (United States). 

(l) Weaknesses or Changes in Internal Accounting Controls. Except as set forth in the Company’s Annual Report on
Form 10-K for the fiscal year ended December 31, 2014 filed with the SEC on March 31, 2015, neither the Company nor any of the Subsidiaries has during the twelve (12) months prior to the date hereof (i) received any notice or
correspondence from any accountant relating to any material weakness in any part of the system of internal accounting controls of the Company or any of its Subsidiaries (ii) become aware of any material weakness in its internal control over
financial reporting or change in internal control over financial reporting that has materially affected, or is reasonably likely to materially affect, the Company’s internal control over financial reporting. 

(m) Sarbanes-Oxley. The Company is in compliance with all applicable requirements of the Sarbanes-Oxley Act of 2002, as
amended, and all rules and regulations promulgated thereunder, or implementing the provisions thereof (the “Sarbanes-Oxley Act”) that are effective as of the date hereof. 

(n) Absence of Litigation. Except as set forth on Schedule 3(n), there is no action, suit, proceeding, inquiry or
investigation before or by the Principal Market, any court, public board, government agency, self-regulatory organization or body pending or, to the Company’s Knowledge, threatened against or affecting the Company or any of its Subsidiaries,
the Common Stock or any of the Company’s Subsidiaries, or any of the Company’s or its Subsidiaries’ officers or directors, whether of a civil or criminal nature or otherwise, in their capacities as such, except as set forth in the
Registration Statement, the General Disclosure Package and the Prospectus, which is required to be disclosed by the Company in its periodic 1934 Act filings. The matters set forth in the Registration Statement, the General Disclosure Package and the
Prospectus, individually or in the aggregate, do not or would not reasonably be expected to have a Material Adverse Effect. 

(o) Title. The Company and its Subsidiaries have good and marketable title in fee simple to all real property and good
and marketable title to all personal property owned by them which is material to the business of the Company and its Subsidiaries, in each case free and clear of all liens, encumbrances and defects except for liens for the benefit of Silicon Valley
Bank as disclosed in the Registration Statement and the Prospectus and other Permitted Liens, which, in the case of such other Permitted Liens, do not materially affect the value of such property and do not interfere with the use made and proposed
to be made of such property by the Company and any of its Subsidiaries. Any real property and facilities held under lease by the Company and any of its Subsidiaries are held by them under valid, subsisting and enforceable leases conforming in all
material respects to the description thereof set forth in the Registration Statement, the General Disclosure Package and the Prospectus. 

  
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 (p) Taxes. The Company and each of its Subsidiaries (i) has made or
filed all U.S. federal, state and foreign income and all other tax returns, reports and declarations required by any jurisdiction to which it is subject, (ii) has paid all taxes and other governmental assessments and charges that are material
in amount, shown or determined to be due on such returns, reports and declarations, except those being contested in good faith, and (iii) has set aside on its books provision reasonably adequate for the payment of all taxes for periods
subsequent to the periods to which such returns, reports or declarations apply. There are no unpaid taxes in any material amount claimed to be due by the taxing authority of any jurisdiction, and the officers of the Company know of no basis for any
such claim. 
 (q) Absence of Certain Changes. Since the respective dates as of which information is given in the
Registration Statement, the General Disclosure Package and the Prospectus, as each may be amended or supplemented, there has been no material adverse change and no material adverse development in the business, assets, properties, operations,
condition (financial or otherwise), results of operations or prospects of the Company or its Subsidiaries and there has not been any material transaction entered into by the Company or the Subsidiaries (including, without limitation,
(i) declaration or payment of any dividends, (ii) sale of any assets, individually or in the aggregate, in excess of $500,000 or (iii) any capital expenditures, individually or in the aggregate, in excess of $250,000, other than
transactions in the ordinary course of business and transactions described in the Registration Statement, the General Disclosure Package and the Prospectus, as each may be amended or supplemented. The Company and the Subsidiaries have no material
contingent obligations which are not disclosed in the Company’s consolidated financial statements which are included in the Registration Statement, the General Disclosure Package and the Prospectus. Neither the Company nor any of its
Subsidiaries has taken any steps to seek protection pursuant to any bankruptcy law nor does the Company have any Knowledge or reason to believe that its creditors intend to initiate involuntary bankruptcy proceedings or any actual Knowledge of any
fact that would reasonably lead a creditor to do so. The Company and its Subsidiaries, individually and on a consolidated basis, are not as of the date hereof, and after giving effect to the transactions contemplated hereby to occur at the Closing,
will not be Insolvent (as defined below). For purposes of this Agreement, (x) “Insolvent” means, with respect to any Person, (i) the present fair saleable value of such Person’s assets is less than the amount required to
pay such Person’s total Indebtedness (as defined below), (ii) such Person is unable to pay its debts and liabilities, subordinated, contingent or otherwise, as such debts and liabilities become absolute and matured, (iii) such Person
intends to incur or believes that it will incur debts that would be beyond its ability to pay as such debts mature or (iv) such Person has unreasonably small capital with which to conduct the business in which it is engaged as such business is
now conducted and is proposed to be conducted, (y) “Indebtedness” of any Person means, without duplication (A) all indebtedness for borrowed money, (B) all obligations issued, undertaken or assumed as the deferred
purchase price of property or services, including, without limitation, “capital leases” in accordance with GAAP (other than trade payables entered into in the ordinary course of business consistent with past practice), (C) all
reimbursement or payment obligations with respect to letters of credit, surety bonds and other similar instruments, (D) all obligations evidenced by notes, bonds, debentures or similar instruments, including obligations


  
 21 








 
so evidenced incurred in connection with the acquisition of property, assets or businesses, (E) all indebtedness created or arising under any conditional sale or other title retention
agreement, or incurred as financing, in either case with respect to any property or assets acquired with the proceeds of such indebtedness (even though the rights and remedies of the seller or bank under such agreement in the event of default are
limited to repossession or sale of such property), (F) all monetary obligations under any leasing or similar arrangement which, in connection with GAAP, consistently applied for the periods covered thereby, is classified as a capital lease,
(G) all indebtedness referred to in clauses (A) through (F) above secured by (or for which the holder of such Indebtedness has an existing right, contingent or otherwise, to be secured by) any mortgage, lien, pledge, charge, security
interest or other encumbrance upon or in any property or assets (including accounts and contract rights) owned by any Person, even though the Person which owns such assets or property has not assumed or become liable for the payment of such
indebtedness, and (H) all Contingent Obligations in respect of indebtedness or obligations of others of the kinds referred to in clauses (A) through (G) above, and (z) “Contingent Obligation” means, as to any
Person, any direct or indirect liability, contingent or otherwise, of that Person with respect to any Indebtedness, lease, dividend or other obligation of another Person if the primary purpose or intent of the Person incurring such liability, or the
primary effect thereof, is to provide assurance to the obligee of such liability that such liability will be paid or discharged, or that any agreements relating thereto will be complied with, or that the holders of such liability will be protected
(in whole or in part) against loss with respect thereto. 
 (r) No Conflicts. The execution, delivery and performance
of the Transaction Documents by the Company and any of its Subsidiaries parties to any of the Transaction Documents and the consummation by the Company and any of its Subsidiaries of the transactions contemplated hereby and thereby (including,
without limitation, the issuance of the Common Shares, the Adjustment Shares, the Capacity Shares and the Warrants and reservation for issuance and issuance of the Common Shares, the Adjustment Shares, the Capacity Shares and the Warrant Shares)
will not (i) result in a violation of its Articles of Incorporation or Bylaws, any memorandum or articles of association, articles of incorporation, certificate of formation, bylaws, any certificate of designations or other constituent
documents of the Company or any of its Subsidiaries, any capital stock of the Company or any of its Subsidiaries or the articles of association or bylaws of the Company or any of its Subsidiaries or (ii) after Complying with Nasdaq Rule
5250(e)(2), conflict with, or constitute a default (or an event which with notice or lapse of time or both would become a default) in any respect under, or give to others any rights of termination, amendment, acceleration or cancellation of, any
material agreement, indenture or instrument to which the Company or any of its Subsidiaries is a party or by which the Company or any of its Subsidiaries or any of their respective properties is bound, or (iii) result in a violation of any law,
rule, regulation, order, judgment or decree (including other foreign, federal and state securities laws and regulations and the rules and regulations of The NASDAQ Capital Market (the “Principal Market”) and including all applicable
laws of the State of Colorado and any foreign, federal and state laws, rules and regulations) applicable to the Company or any of its Subsidiaries or by which any property or asset of the Company or any of its Subsidiaries is bound or affected. 

(s) Contracts. There is no document, contract or other agreement required to be described in the Registration Statement
or Prospectus or to be filed as an exhibit to the Registration Statement which is not described or filed as required by the 1933 Act or the Rules 

  
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and Regulations. Each description of a contract, document or other agreement in the Registration Statement and the Prospectus accurately reflects in all material respects the terms of the
underlying contract, document or other agreement. Each contract, document or other agreement described in the Registration Statement and Prospectus or listed in the exhibits to the Registration Statement or incorporated by reference is in full force
and effect and is valid and enforceable by and against the Company in accordance with its terms (except as rights to indemnity and contribution thereunder may be limited by federal or state securities laws and matter of public policy and except as
the enforceability thereof may be limited by bankruptcy, insolvency, reorganization, moratorium or other similar laws affecting the enforcement of creditors’ rights generally and by general equitable principle). Neither the Company nor any of
its Subsidiaries nor, to the Company’s Knowledge, any other party is in default in the observance or performance of any term or obligation to be performed by it under any such agreement or any other agreement or instrument to which the Company
or its Subsidiaries is a party or by which the Company or its Subsidiaries or their respective properties or businesses may be bound, and no event has occurred which with notice or lapse of time or both would constitute such a default, in any such
case in which the default or event, individually or in the aggregate, would have a Material Adverse Effect. 
 (t)
Regulatory Approvals. Each approval, consent, order, authorization, designation, declaration or filing by or with any regulatory, administrative or other governmental body necessary in connection with the execution and delivery by the Company
of this Agreement and the consummation of the transactions herein contemplated (except such additional steps as may be required by the SEC, the Financial Industry Regulatory Authority, Inc. (the “FINRA”) or such additional steps as
may be required under state securities or Blue Sky laws) has been obtained or made and is in full force and effect. 
 (u)
Conduct of Business. Neither the Company nor any of its Subsidiaries is in violation of any term of or in default under any certificate of designations of any outstanding series of preferred stock of the Company (if any), its Articles of
Incorporation or Bylaws or their organizational charter or memorandum of association or articles of incorporation or articles of association or bylaws, respectively. Neither the Company nor any of its Subsidiaries is in violation of any judgment,
decree or order or any statute, ordinance, rule or regulation applicable to the Company or any of its Subsidiaries, and neither the Company nor any of its Subsidiaries will conduct its business in violation of any of the foregoing, except for
possible violations which would not, individually or in the aggregate, reasonably be expected to have a Material Adverse Effect. 

(v) Intellectual Property. The Company and its Subsidiaries own or possess adequate rights or licenses to use all
trademarks, trade names, service marks, service mark registrations, service names, original works of authorship, patents, patent rights, copyrights, inventions, licenses, approvals, governmental authorizations, trade secrets and other intellectual
property rights and all applications and registrations therefor (“Intellectual Property Rights”) necessary to conduct their respective businesses as now conducted. Each of patents owned by the Company or any of its Subsidiaries is
listed in the Registration Statement and the Prospectus. Except as set forth in the Registration Statement and the Prospectus, none of the Company’s Intellectual Property Rights have expired or terminated or have been abandoned or are expected
to expire or terminate or are expected to be abandoned, within three years from the 

  
 23 








 
date of this Agreement. The Company does not have any Knowledge of any infringement by the Company or its Subsidiaries of Intellectual Property Rights of others. There is no claim, action or
proceeding being made or brought, or to the Knowledge of the Company or any of its Subsidiaries, being threatened, against the Company or any of its Subsidiaries regarding its Intellectual Property Rights. Neither the Company nor any of its
Subsidiaries is aware of any facts or circumstances which might give rise to any of the foregoing infringements or claims, actions or proceedings. The Company and its Subsidiaries have taken reasonable security measures to protect the secrecy,
confidentiality and value of all of their Intellectual Property Rights. There are no outstanding options, licenses or agreements of any kind relating to the Intellectual Property Rights of the Company that are required to be described in the
Registration Statement, the General Disclosure Package and the Prospectus and are not described therein in all material respects. The Company is not a party to or bound by any options, licenses or agreements with respect to the Intellectual Property
Rights of any other person or entity that are required to be set forth in the Prospectus and are not described therein in all material respects. None of the technology employed by the Company and material to the Company’s business has been
obtained or is being used by the Company in violation of any contractual obligation binding on the Company or, to the Company’s Knowledge, any of its officers, directors or employees or, to the Company’s Knowledge, otherwise in violation
of the rights of any persons; the Company has not received any written or oral communications alleging that the Company has violated, infringed or conflicted with, or, by conducting its business as set forth in the Registration Statement, the
General Disclosure Package or the Prospectus, would violate, infringe or conflict with, any of the Intellectual Property Rights of any other person or entity. The Company knows of no material infringement by others of Intellectual Property Rights
owned by or licensed to the Company. 
 (w) Manipulation of Prices. The Company has not, and to its Knowledge no one
acting on its behalf has, (i) taken, directly or indirectly, any action designed to cause or to result, or that could reasonably be expected to cause or result, in the stabilization or manipulation of the price of any security of the Company to
facilitate the sale or resale of any of the Securities, (ii) other than the Agent or other agents with respect to prior offerings which have been disclosed in the Registration Statement, the General Disclosure Package or the Prospectus, sold,
bid for, purchased, or paid any compensation for soliciting purchases of, any of the Securities, or (iii) other than the Agent or other agents with respect to prior offerings, paid or agreed to pay to any person any compensation for soliciting
another to purchase any other securities of the Company. 
 (x) Investment Company Act. Neither the Company nor any
Subsidiary is, and upon consummation of the sale of the Securities, and for so long any Buyer holds any Securities, will be, an “investment company,” a company controlled by an “investment company” or an “affiliated
person” of, or “promoter” or “principal underwriter” for, an “investment company” as such terms are defined in the Investment Company Act of 1940, as amended. 

(y) Internal Accounting Controls. 

(i) The Company and each of its Subsidiaries maintain a system of internal accounting controls sufficient to provide reasonable assurance
that (i) transactions are 

  
 24 








 
executed in accordance with management’s general or specific authorizations, (ii) transactions are recorded as necessary to permit preparation of financial statements in conformity with
GAAP and to maintain asset and liability accountability, (iii) access to assets or incurrence of liabilities is permitted only in accordance with management’s general or specific authorization and (iv) the recorded accountability for
assets and liabilities is compared with the existing assets and liabilities at reasonable intervals and appropriate action is taken with respect to any difference. 

(ii) The Company maintains disclosure controls and procedures (as such term is defined in Rule 13a-15 under the 1934 Act) that are effective
in ensuring that information required to be disclosed by the Company in the reports that it files or submits under the 1934 Act is recorded, processed, summarized and reported, within the time periods specified in the rules and forms of the SEC,
including, without limitation, controls and procedures designed to ensure that information required to be disclosed by the Company in the reports that it files or submits under the 1934 Act is accumulated and communicated to the Company’s
management, including its principal executive officer or officers and its principal financial officer or officers, as appropriate, to allow timely decisions regarding required disclosure. 

(z) Industry and Market Data. The statistical, industry-related and market-related data, if any, included in the
Registration Statement, the General Disclosure Package and the Prospectus are based on or derived from sources which the Company reasonably and in good faith believes are reliable and accurate, and such data agree in all material respects with the
sources from which they are derived. 
 (aa) Money Laundering Laws. The operations of the Company and the Subsidiaries
are and have been conducted at all times in compliance with applicable financial record-keeping and reporting requirements of the Currency and Foreign Transactions Reporting Act of 1970, as amended, applicable money laundering statutes and
applicable rules and regulations thereunder (collectively, the “Money Laundering Laws”), and no action, suit or proceeding by or before any court or governmental agency, authority or body or any arbitrator involving the Company or
any or its Subsidiaries with respect to the Money Laundering Laws is pending or, to the Company’s knowledge, threatened. 

(bb) Office of Foreign Assets Control. Neither the Company nor, to the Company’s knowledge, any director, officer,
agent, employee or Affiliate of the Company is currently subject to any U.S. sanctions administered by the Office of Foreign Assets Control of the U.S. Treasury Department (“OFAC”); and the Company will not directly or indirectly
use the proceeds of the offering, or lend, contribute or otherwise make available such proceeds to any subsidiary, joint venture partner or other person or entity, for the purpose of financing the activities of any person currently subject to any
U.S. sanctions administered by OFAC. 
 (cc) Insurance. The Company and each of its Subsidiaries are insured by
insurers of recognized financial responsibility against such losses and risks and in such amounts as management of the Company believes to be prudent and customary in the businesses in which the Company and its Subsidiaries are engaged. Neither the
Company nor any such Subsidiary has been refused any insurance coverage sought or applied for and neither the Company nor any such Subsidiary has any reason to believe that it will not be able to renew its existing insurance coverage as and when
such coverage expires or to obtain similar coverage 

  
 25 








 
from similar insurers, in each case, as may be necessary to continue its business at a cost that, individually or in the aggregate, do not or would not reasonably be expected to have a Material
Adverse Effect. 
 (dd) Employee Benefits. The Company and each Subsidiary is in compliance in all material respects
with all presently applicable provisions of the Employee Retirement Income Security Act of 1974, as amended, including the regulations and published interpretations thereunder (“ERISA”); no “reportable event” (as defined
in ERISA) has occurred with respect to any “pension plan” (as defined in ERISA) for which the Company and each Subsidiary would have any material liability; the Company and each Subsidiary has not incurred and does not expect to incur
material liability under (i) Title IV of ERISA with respect to termination of, or withdrawal from, any “pension plan” or (ii) Sections 412 or 4971 of the Internal Revenue Code of 1986, as amended (the “Code”);
and each “pension plan” for which the Company or any Subsidiary would have any liability that is intended to be qualified under Section 401(a) of the Code is so qualified in all material respects and nothing has occurred, whether by
action or by failure to act, which would cause the loss of such qualification. 
 (ee) Employee Relations. 

(i) Neither the Company nor any of its Subsidiaries is a party to any collective bargaining agreement or employs any member of a union. The
Company and its Subsidiaries believe that its relations with its employees are good. No current executive officer of the Company or any of its Subsidiaries (as defined in Rule 501(f) of the 1933 Act) has notified the Company or any such Subsidiary
that such officer intends to leave the Company or any such Subsidiary or otherwise terminate such officer’s employment with the Company or any such Subsidiary. No current executive officer of the Company or any of its Subsidiaries is, or is now
expected to be, in violation of any material term of any employment contract, confidentiality, disclosure or proprietary information agreement, non-competition agreement, or any other contract or agreement or any restrictive covenant, and the
continued employment of each such executive officer does not subject the Company or any of its Subsidiaries to any liability with respect to any of the foregoing matters, except where such violation would not, either individually or in the
aggregate, reasonably be expected to result in a Material Adverse Effect. 
 (ii) The Company and its Subsidiaries are in compliance with
all federal, state, local and foreign laws and regulations respecting labor, employment and employment practices and benefits, terms and conditions of employment and wages and hours, except where failure to be in compliance would not, either
individually or in the aggregate, reasonably be expected to result in a Material Adverse Effect. 
 (ff) Transactions with
Affiliates. Except as otherwise described in Schedule 3(ff), to the Company’s Knowledge, there are no affiliations or associations between any member of the FINRA and any of the Company’s officers, directors or 5% or greater
securityholders, except as set forth in the Registration Statement. There are no relationships or related-party transactions involving the Company or any of the Subsidiaries or, to the Knowledge of the Company, any other person required to be
described in the Prospectus which have not been described in the Registration Statement or the Prospectus, as required. 

  
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 (gg) Environmental Laws. The Company and its Subsidiaries (i) are in
compliance with any and all Environmental Laws (as hereinafter defined), (ii) have received all permits, licenses or other approvals required of them under applicable Environmental Laws to conduct their respective businesses and (iii) are
in compliance with all terms and conditions of any such permit, license or approval where, in each of the foregoing clauses (i), (ii) and (iii), the failure to so comply could be reasonably expected to have, individually or in the aggregate, a
Material Adverse Effect. The term “Environmental Laws” means all federal, state, local or foreign laws relating to pollution or protection of human health or the environment (including, without limitation, ambient air, surface
water, groundwater, land surface or subsurface strata), including, without limitation, laws relating to emissions, discharges, releases or threatened releases of chemicals, pollutants, contaminants, or toxic or hazardous substances or wastes
(collectively, “Hazardous Materials”) into the environment, or otherwise relating to the manufacture, processing, distribution, use, treatment, storage, disposal, transport or handling of Hazardous Materials, as well as all
authorizations, codes, decrees, demands or demand letters, injunctions, judgments, licenses, notices or notice letters, orders, permits, plans or regulations issued, entered, promulgated or approved thereunder. 

(hh) Listing; 1934 Act Registration. The Common Stock is listed for trading on the Principal Market. The Company has
taken no action designed to, or likely to have the effect of, terminating the registration of the Common Stock under the 1934 Act or the quotation of the Common Stock on the Principal Market, and except as disclosed in Schedule 3(hh), the
Company has not received any notification that the SEC or the Principal Market is contemplating terminating such registration or quotation. Without limiting the generality of the foregoing, except as disclosed in Schedule 3(hh), the Company
is not in violation of any of the rules, regulations or requirements of the Principal Market and has no Knowledge of any facts or circumstances that would reasonably lead to delisting or suspension of the Common Stock by the Principal Market in the
foreseeable future. During the two (2) years prior to the date hereof, the Common Stock has been designated for quotation on the Principal Market. During the two (2) years prior to the date hereof, (i) trading in the Common Stock has
not been suspended by the SEC or the Principal Market and (ii) the Company has received no communication, written or oral, from the SEC or the Principal Market regarding the suspension or delisting of the Common Stock from the Principal Market.
The Company and its Subsidiaries possess all certificates, authorizations and permits issued by the appropriate federal, state or foreign regulatory authorities necessary to conduct their respective businesses, except where the failure to possess
such certificates, authorizations or permits would not have, individually or in the aggregate, a Material Adverse Effect, and neither the Company nor any such Subsidiary has received any notice of proceedings relating to the revocation or
modification of any such certificate, authorization or permit. 
 (ii) Contributions; Foreign Corrupt Practices.
Neither the Company, nor any of its Subsidiaries, nor any director, officer, agent, employee or other Person acting on behalf of the Company or any of its Subsidiaries has, in the course of its actions for, or on behalf of, the Company or any of its
Subsidiaries (i) used any corporate funds for any unlawful contribution, gift, entertainment or other unlawful expenses relating to political activity; (ii) made any direct or indirect unlawful payment to any foreign or domestic government
official or employee from corporate funds; (iii) violated or is in violation of any provision of the U.S. Foreign Corrupt Practices Act of 1977, as amended; or (iv) made any unlawful bribe, rebate, payoff, influence payment, kickback or
other unlawful payment to any foreign or domestic government official or employee. 

  
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 (jj) No Integrated Offering. The Company has not sold or issued any
securities that would be integrated with the offering of the Securities contemplated by this Agreement pursuant to the 1933 Act, the Rules and Regulations or the interpretations thereof by the SEC. None of the Company, its Subsidiaries, any of their
Affiliates, and any Person acting on their behalf has, directly or indirectly, made any offers or sales of any security or solicited any offers to buy any security, under circumstances that would cause this offering of the Securities to require
approval of shareholders of the Company for purposes of any applicable shareholder approval provisions, including, without limitation, Nasdaq Rule 5635. None of the Company, its Subsidiaries, their Affiliates and any Person acting on their behalf
will take any action or steps referred to in the preceding sentence that would cause the offering of the Securities to be integrated with other offerings for purposes of any such applicable shareholder approval provisions. 

(kk) Brokerage Fees; Commissions. Except as set forth in any of the Transaction Documents, the Registration Statement
and the Prospectus, neither the Company nor any of its Subsidiaries is a party to any contract, agreement or understanding with any person that would give rise to a valid claim against the Company or the Buyers for a brokerage commission,
finder’s fee or like payment in connection with the offering and sale of the Securities. The Company shall pay, and hold each Buyer harmless against, any liability, loss or expense (including, without limitation, attorneys’ fees and
out-of-pocket expenses) arising in connection with any such claim. The Company acknowledges that it has engaged WestPark Capital, Inc. as placement agent (the “Agent”) in connection with the sale of the Securities. Other than the
Agent, neither the Company nor any of its Subsidiaries has engaged any placement agent or other agent in connection with the sale of the Securities. 

(ll) Consents. Neither the Company nor any of its Subsidiaries is required to obtain any consent, authorization or order
of, or make any filing or registration with, any court, governmental agency or any regulatory or self-regulatory agency or any other Person in order for it to execute, deliver or perform any of its obligations under or contemplated by the
Transaction Documents, in each case in accordance with the terms hereof or thereof which have not been previously obtained or made. All consents, authorizations, orders, filings and registrations which the Company or any of its Subsidiaries is
required to obtain pursuant to the preceding sentence have been obtained or effected on or prior to the Closing Date, and the Company and its Subsidiaries are unaware of any facts or circumstances that might prevent the Company or any of its
Subsidiaries from obtaining or effecting any of the registration, application or filings pursuant to the preceding sentence. The issuance by the Company of the Securities shall not have the effect of delisting or suspending the Common Stock from the
Principal Market. 
 (mm) Acknowledgment Regarding Buyer’s Purchase of Securities. The Company acknowledges and
agrees that each Buyer is acting solely in the capacity of an arm’s length purchaser with respect to the Transaction Documents and the transactions contemplated hereby and thereby and that no Buyer is (i) an officer or director of the
Company or any of its Subsidiaries, (ii) an “affiliate” of the Company or any of its Subsidiaries (as defined in Rule 144) 

  
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or (iii) to the Knowledge of the Company, a “beneficial owner” of more than 10% of the shares of Common Stock (as defined for purposes of Rule 13d-3 of the 1934 Act). The Company
further acknowledges that no Buyer is acting as a financial advisor or fiduciary of the Company or any of its Subsidiaries (or in any similar capacity) with respect to the Transaction Documents and the transactions contemplated hereby and thereby,
and any advice given by a Buyer or any of its representatives or agents in connection with the Transaction Documents and the transactions contemplated hereby and thereby is merely incidental to such Buyer’s purchase of the Securities. The
Company further represents to each Buyer that the Company’s decision to enter into the Transaction Documents has been based solely on the independent evaluation by the Company and its representatives. 

(nn) Dilutive Effect. The Company understands and acknowledges that the number of Warrant Shares issuable pursuant to
the terms of the Warrants and Adjustment Shares and Capacity Shares deliverable pursuant to the terms of this Agreement will increase in certain circumstances. The Company further acknowledges that its obligation to issue Warrant Shares upon
exercise of the Warrants in accordance with this Agreement and the Warrants and to deliver the Adjustment Shares and Capacity shares in accordance with Section 1(g) is, in each case, absolute and unconditional regardless of the dilutive effect
that such issuance may have on the ownership interests of other shareholders of the Company, subject to the terms of the Warrants and the other Transaction Documents. 

(oo) Application of Takeover Protections; Rights Agreement. The Company and its board of directors have taken all
necessary action, if any, in order to exempt the Company’s issuance of the Securities and any Buyer’s ownership of the Securities from the provisions of any control share acquisition, business combination, poison pill (including any
distribution under a rights agreement) or other similar anti-takeover provision under the Articles of Incorporation of the Company or the laws of the state of its incorporation which is or could become applicable to any Buyer as a result of the
transactions contemplated by this Agreement, including, without limitation, the Company’s issuance of Securities and each Buyer’s ownership of the Securities. Except as set forth in the Registration Statement and the Prospectus, the
Company does not have any shareholder rights plan or similar arrangement relating to accumulations of beneficial ownership of Common Stock or a change in control of the Company. 

(pp) Subsidiary Rights. The Company or one of its Subsidiaries has the unrestricted right to vote, and (subject to
limitations imposed by applicable law) to receive dividends and distributions on, all capital securities of its Subsidiaries as owned by the Company or such Subsidiary. 

(qq) Off Balance Sheet Arrangements. There is no transaction, arrangement, or other relationship between the Company and
an unconsolidated or other off balance sheet entity that is required to be disclosed by the Company in its 1934 Act filings and is not so disclosed or that otherwise would be reasonably likely to have a Material Adverse Effect. 

(rr) Transfer Taxes. On the Closing Date, all stock transfer or other similar taxes (other than income or similar taxes)
which are required to be paid in connection with the sale and transfer of the Securities to be sold to each Buyer hereunder will be, or will have been, fully paid or provided for by the Company, and all laws imposing such taxes will be or will have
been complied with. 

  
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 (ss) Acknowledgement Regarding Buyers’ Trading Activity. Anything in
this Agreement or elsewhere herein to the contrary notwithstanding, it is understood and acknowledged by the Company (i) that none of the Buyers have been asked by the Company or its Subsidiaries to agree, nor has any Buyer agreed with the
Company or its Subsidiaries, to desist from purchasing or selling, long and/or short, securities of the Company, or “derivative” securities based on securities issued by the Company or to hold the Securities for any specified term;
(ii) that past or future open market or other transactions by any Buyer, including, without limitation, short sales or “derivative” transactions, before or after the closing of this or future transactions, may negatively impact the
market price of the Company’s publicly-traded securities; (iii) that any Buyer, and counter parties in “derivative” transactions to which any such Buyer is a party, directly or indirectly, presently may have a “short”
position in the Common Stock; and (iv) that such Buyer shall not be deemed to have any affiliation with or control over any arm’s length counter-party in any “derivative” transaction. The Company further understands and
acknowledges that (a) one or more Buyers may engage in hedging and/or trading activities at various times during the period that the Securities are outstanding, including, without limitation, during the period that the value of the Warrant
Shares deliverable with respect to Warrants are being determined and/or the Adjustment Shares and Capacity Shares deliverable with respect to this Agreement are being determined and (b) such hedging and/or trading activities (if any) could
reduce the value of the existing shareholders’ equity interests in the Company at and after the time that the hedging and/or trading activities are being conducted. The Company acknowledges that such aforementioned hedging and/or trading
activities do not constitute a breach of this Agreement, the Warrants or any of the documents executed in connection herewith. 

(tt) U.S. Real Property Holding Corporation. The Company is not, has never been, and so long as any Securities remain
outstanding, shall not become, a U.S. real property holding corporation within the meaning of Section 897 of the Code and the Company shall so certify upon any Buyer’s request. 

(uu) Shell Company Status. The Company is not, and has never been, an issuer identified in Rule 144(i)(1). 

(vv) Bank Holding Company. Neither the Company nor any of its Subsidiaries or Affiliates is subject to the Bank Holding
Company Act of 1956, as amended (the “BHCA”) and to regulation by the Board of Governors of the Federal Reserve System (the “Federal Reserve”). Neither the Company nor any of its Subsidiaries or Affiliates owns or
controls, directly or indirectly, five percent (5%) or more of the outstanding shares of any class of voting securities or twenty-five percent (25%) or more of the total equity of a bank or any entity that is subject to the BHCA and to
regulation by the Federal Reserve. Neither the Company nor any of its Subsidiaries or Affiliates exercises a controlling influence over the management or policies of a bank or any entity that is subject to the BHCA and to regulation by the Federal
Reserve. 
 (ww) SEC Documents; Financial Statements. Except for the Company’s current report on Form 8-K filed
on December 18, 2013, which has been amended by the amended 

  
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current report on Form 8-K/A filed on August 29, 2014, during the two (2) years prior to the date hereof, the Company has timely filed all reports, schedules, forms, statements and
other documents required to be filed by it with the SEC pursuant to the reporting requirements of the 1934 Act (all of the foregoing filed prior to the date hereof, and all exhibits included therein and financial statements, notes and schedules
thereto and documents incorporated by reference therein being hereinafter referred to as the “SEC Documents”). The Company has delivered to the Buyers or their respective representatives true, correct and complete copies of the SEC
Documents not available on the EDGAR system other than annual reports to security holders filed with the SEC as “ARS” filings, which “ARS” filings conformed in form and substance to the reports filed by the Company with the SEC.
As of their respective filing dates, the SEC Documents complied in all material respects with the requirements of the 1934 Act and the rules and regulations of the SEC promulgated thereunder applicable to the SEC Documents, and none of the SEC
Documents, at the time they were filed with the SEC, contained any untrue statement of a material fact or omitted to state a material fact required to be stated therein or necessary in order to make the statements therein, in the light of the
circumstances under which they were made, not misleading. As of their respective filing dates, the financial statements of the Company included in the SEC Documents complied as to form in all material respects with applicable accounting requirements
and the published rules and regulations of the SEC with respect thereto. Such financial statements have been prepared in accordance with GAAP, consistently applied, during the periods involved (except (i) as may be otherwise indicated in such
financial statements or the notes thereto, or (ii) in the case of unaudited interim statements, to the extent they may exclude footnotes or may be condensed or summary statements) and fairly present in all material respects the financial
position of the Company as of the dates thereof and the results of its operations and cash flows for the periods then ended (subject, in the case of unaudited statements, to normal year-end audit adjustments).  

(xx) Lock-Up Agreements. The lock-up agreements (the “Lock-Up Agreements”) entered into by and between
the Company and each of the parties set forth on Exhibit F-1 attached to the Securities Purchase Agreement (the “February 2015 SPA”) dated as of February 23, 2015 by and among the Company and the investors listed on the
signature pages attached thereto (the “Locked-Up Parties”) in connection with the transactions contemplated by the February 2015 SPA, are still in full force and effect, have not been amended or waived, are enforceable against each
of the Locked-Up Parties in accordance with their terms, and no default under any such Lock-Up Agreement has occurred. 

(yy) Securities Escrow Agreement. The Company and the Transfer Agent has executed and delivered to the Company the
Securities Escrow Agreement. 
 (zz) No Undisclosed Events, Liabilities, Developments or Circumstances. No event,
liability, development or circumstance has occurred or exists, or is contemplated to occur with respect to the Company, its Subsidiaries or their respective business, properties, prospects, operations or financial condition, that would be required
to be disclosed by the Company under applicable securities laws on a registration statement on Form S-1 filed with the SEC relating to an issuance and sale by the Company of its Common Stock and which has not been publicly announced. 

  
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 (aaa) Stock Option Plans. Except as disclosed in the Registration
Statement or the Prospectus, each stock option granted by the Company was granted (i) in accordance with the terms of the applicable stock option plan of the Company and (ii) with an exercise price at least equal to the fair market value
of the Common Stock on the date such stock option would be considered granted under GAAP and applicable law. No stock option granted under the Company’s stock option plan has been backdated. The Company has not knowingly granted, and there is
no and has been no policy or practice of the Company to knowingly grant, stock options prior to, or otherwise knowingly coordinate the grant of stock options with, the release or other public announcement of material information regarding the
Company or its Subsidiaries or their financial results or prospects. 
 (bbb) Indebtedness and Other Contracts. 

(i) Neither the Company nor any of its Subsidiaries, except as disclosed in the Registration Statement and the Prospectus or which is
otherwise Permitted Indebtedness (as defined below), (i) has any outstanding Indebtedness, individually or in the aggregate, in excess of $100,0000, (ii) is a party to any contract, agreement or instrument, the violation of which, or
default under which, by the other party(ies) to such contract, agreement or instrument could reasonably be expected to result in a Material Adverse Effect, (iii) is in violation of any term of or in default under any contract, agreement or
instrument relating to any Indebtedness, except where such violations and defaults would not result, individually or in the aggregate, in a Material Adverse Effect, or (iv) is a party to any contract, agreement or instrument relating to any
Indebtedness, the performance of which, in the judgment of the Company’s officers, has or is expected to have a Material Adverse Effect. The Registration Statement and the Prospectus provide a detailed description of the material terms of any
such outstanding Indebtedness. 
 (ii) As used in this subsection and elsewhere in this Agreement: 

(1) “Liens” means any mortgage, lien, pledge, charge, security interest or other encumbrance upon or
in any property or assets (including accounts and contract rights) owned by the Company or any of its Subsidiaries. 

(2) “Permitted Indebtedness” means (i) trade payables incurred in the ordinary course of business
consistent with past practice, (ii) Permitted Senior Indebtedness, (iii) Indebtedness secured by Permitted Liens described in clauses (iv) and (vi) of the definition of Permitted Liens, (iv) any synthetic lease obligations,
or other obligations which are required to be treated as Indebtedness under GAAP, but are otherwise operating lease obligations and (v) letters of credit or bonds entered into in the Company’s ordinary course of business in an amount not
to exceed $100,000 in the aggregate. 
 (3) “Permitted Liens” means (i) any Lien for taxes not
yet due or delinquent or being contested in good faith by appropriate proceedings for which adequate reserves have been established in accordance with GAAP, (ii) any statutory Lien arising in the ordinary course of business by operation of law
with respect to a liability that is not yet due or delinquent, (iii) any Lien created by operation of law, such 

  
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as materialmen’s liens, mechanics’ liens and other similar liens, arising in the ordinary course of business with respect to a liability that is not yet due or delinquent or that are
being contested in good faith by appropriate proceedings, (iv) Liens (A) upon or in any equipment acquired or held by the Company or any of its Subsidiaries to secure the purchase price of such equipment or Indebtedness incurred solely for
the purpose of financing the acquisition or lease of such equipment, or (B) existing on such equipment at the time of its acquisition, provided that the Lien is confined solely to the property so acquired and improvements thereon, and the
proceeds of such equipment, (v) Liens incurred in connection with the extension, renewal or refinancing of the indebtedness secured by Liens of the type described in clause (iv) above, provided that any extension, renewal or replacement
Lien shall be limited to the property encumbered by the existing Lien and the principal amount of the Indebtedness being extended, renewed or refinanced does not increase, (vi) leases or subleases and licenses and sublicenses granted to others
in the ordinary course of the Company’s business, not interfering in any material respect with the business of the Company and its Subsidiaries taken as a whole, (vii) Liens in favor of customs and revenue authorities arising as a matter
of law to secure payments of custom duties in connection with the importation of goods, (viii) Liens arising from judgments, decrees or attachments, (ix) Liens securing Permitted Senior Indebtedness as in effect on the date hereof. 

(4) “Permitted Senior Indebtedness” means Indebtedness incurred pursuant to that certain Loan and
Security Agreement dated as of December 19, 2011 by and among Real Goods Energy Tech, INC., Real Goods Trading Corporation, Earth Friendly Energy Group Holdings, LLC, Alteris Renewables, INC., Earth Friendly Energy Group, LLC, Solar Works, LLC,
Alteris RPS, LLC and Alteris ISI, LLC and Silicon Valley Bank, as such Indebtedness may be refinanced, amended or extended. 

(ccc) No Additional Agreements. Neither the Company nor any of its Subsidiaries has any agreement or understanding with
any Buyer with respect to the transactions contemplated by the Transaction Documents other than as specified in the Transaction Documents. 

(ddd) No Disagreements with Accountants and Lawyers. There are no material disagreements of any kind presently existing,
or reasonably anticipated by the Company to arise, between the Company and the accountants and lawyers formerly or presently employed by the Company and the Company is current with respect to any fees owed to its accountants and lawyers which could
affect the Company’s ability to perform any of its obligations under any of the Transaction Documents. In addition, on or prior to the date hereof, the Company had discussions with its accountants about its financial statements previously filed
with the SEC. Based on those discussions, the Company has no reason to believe that it will need to restate any such financial statements or any part thereof. 

4. COVENANTS. 

(a) Best Efforts. Each party shall use its reasonable best efforts timely to satisfy each of the covenants and the
conditions to be satisfied by it as provided in Sections 6 and 7 of this Agreement. 

  
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 (b) Maintenance of Registration Statement. 

(i) For so long as any of the Warrants remain outstanding or any Adjustment Shares or Capacity Shares may be issued to the Buyers, the
Company shall use its reasonable best efforts to maintain the effectiveness of the Registration Statement for the issuance thereunder of the Registrable Securities (as defined below); provided that, if at any time while any Warrants are outstanding,
the Company shall be ineligible to utilize Form S-3 (or any successor form) for the purpose of issuance of the Registrable Securities (as defined below) the Company shall use its reasonable best efforts to promptly amend or supplement the
Registration Statement or, if necessary, file a new registration statement on such other form as may be necessary to maintain the effectiveness of the Registration Statement or such other registration statement for this purpose. For the purpose of
this Agreement, “Registrable Securities” means at least the sum of (i) the number of shares of Common Stock issuable as Adjustment Shares, Capacity Shares and upon exercise of the Warrants then outstanding (without taking into
account any limitations on the number of Adjustment Shares, Capacity Shares or limitations on exercise of the Warrants set forth herein or in the Warrants, including, without limitation, the Maximum Percentage) and (ii) any shares of capital
stock of the Company issued or issuable with respect to the Common Shares, the Adjustment Shares, the Capacity Shares, the Warrants and/or the Warrant Shares as a result of any stock split, stock dividend, recapitalization, exchange, shareholder
approval or similar event or adjustment or otherwise, without regard to any limitations on issuance, conversion or exercise thereof. 

(ii) To the extent the Registration Statement does not, at any time, cover a sufficient number of shares of Common Stock issuable (x) as
Adjustment Shares, Capacity Shares and upon exercise in full of the Warrants then outstanding without any regard to any limitation or restriction on the number of Adjustment Shares, Capacity Shares or limitations on exercise of Warrants set forth
therein, including, without limitation, the Maximum Percentage or (y) pursuant to Section 1(g) hereof without any regard to any limitation or restriction on the issuance of Adjustment Shares and/or Capacity Shares set forth herein,
including, without limitation, the Maximum Percentage, the Company shall promptly amend or supplement the Registration Statement or, if necessary, file a new registration statement in order to register such number of Warrant Shares not covered by
the Registration Statement. 
 (iii) If, on any day after the Closing Date, issuances of all of the Registrable Securities cannot be
made upon exercise of the Warrants pursuant to the Registration Statement (including, without limitation, because of a failure to keep the Registration Statement effective, failure to file or cause to become effective any supplements or amendments
thereto or other public filings necessary, failure to disclose such information as is necessary for sales to be made pursuant to the Registration Statement, a suspension or delisting of the Common Stock on its principal trading market or exchange,
failure to register or list a sufficient number of shares of Common Stock, or ineligibility to issue such Registrable Securities under the Registration Statement pursuant to General Instruction I.B.4.) (a “Maintenance Failure”)
then, as partial relief for the damages to any holder of Securities (an “Investor”) by reason of any such delay in or reduction of its ability to receive Registrable Securities upon exercise of the Warrants (which remedy shall not
be exclusive of any other remedies available at law or in equity), the Company shall pay to each Investor an amount in cash equal to one percent (1.0%) of the aggregate Purchase Price of such Investor’s Securities on each of the following
dates: (i) the initial day of a  

  
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Maintenance Failure; and (ii) on every thirtieth (30th) day (pro-rated for periods totaling less than thirty (30) days) after the initial day after a Maintenance Failure until
such Maintenance Failure is cured. The Company shall also pay the reasonable fees of legal counsel of such Investor to enforce the provisions hereof. The payments to which an Investor shall be entitled pursuant to this Section 4(b) are referred
to herein as “Registration Delay Payments.” Registration Delay Payments shall be paid on the initial day of a Maintenance Failure, as applicable, and thereafter on the earlier of (I) the thirtieth (30th) day after the
event or failure giving rise to the Registration Delay Payments has occurred and (II) the third (3rd) Business Day after the event or failure giving rise to the Registration Delay Payments is cured. In the event the Company fails to make
Registration Delay Payments in a timely manner, such Registration Delay Payments shall bear interest at the rate of one and one-half percent (1.5%) per month (prorated for partial months) until paid in full.  

(c) Prospectus Supplement and Blue Sky. In the manner required by law, the Company shall have delivered to the Buyers,
and as soon as practicable after the Closing, the Company shall file, the Prospectus Supplement with respect to the Securities as required under and in conformity with the 1933 Act, including Rule 424(b) thereunder. If required, the Company, on or
before the Closing Date, shall take such action as the Company shall reasonably determine is necessary in order to obtain an exemption for or to qualify the Securities for sale to the Buyers at the Closing pursuant to this Agreement under applicable
securities or “Blue Sky” laws of the states of the United States (or to obtain an exemption from such qualification), and shall provide evidence of any such action so taken to the Buyers on or prior to the Closing Date. The Company shall
make all filings and reports relating to the offer and sale of the Securities required under applicable securities or “Blue Sky” laws of the states of the United States following the Closing Date. 

(d) Use of Proceeds. The Company will use the proceeds from the sale of the Securities for general corporate purposes,
for working capital purposes and/or for any scheduled repayment of any outstanding Permitted Senior Indebtedness, but not for the redemption or repurchase of any of its or its Subsidiaries’ equity securities. 

(e) Listing. The Company shall promptly secure the listing of all of the Common Shares, Adjustment Shares, Capacity
Shares and Warrant Shares upon each securities exchange and automated quotation system, if any, upon which the Common Stock is then listed, including the Principal Market (subject to official notice of issuance) and shall use its reasonable best
efforts to maintain, in accordance with the Transaction Documents, the listing of all Common Shares, Adjustment Shares, Capacity Shares and Warrant Shares, from time to time deliverable or issuable, as applicable, under the terms of the Transaction
Documents. The Company shall maintain the authorization for quotation of the Common Stock, on the Principal Market, or if such authorization is not able to be maintained, on another Eligible Market (as defined in the Warrants). Neither the Company
nor any of its Subsidiaries shall take any action which would be reasonably expected to result in the delisting or suspension of the Common Stock on the Principal Market. The Company shall pay all fees and expenses in connection with satisfying its
obligations under this Section 4(e). 
 (f) Fees. The Company shall reimburse the Lead Investor (a Buyer) or its
designee(s) (in addition to any other expense amounts paid to any Buyer or its counsel prior to 

  
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the date of this Agreement) for all costs and expenses incurred in connection with the transactions contemplated by the Transaction Documents (including all legal fees and disbursements in
connection therewith, documentation and implementation of the transactions contemplated by the Transaction Documents and due diligence in connection therewith), without the prior written approval of the Company, in an amount not to exceed $40,000,
which amount, at the option of such Buyer, may be withheld by such Buyer from its Purchase Price at the Closing to the extent not previously reimbursed by the Company. The Company shall be responsible for the payment of any placement agent’s
fees, financial advisory fees, or broker’s commissions (other than for Persons engaged by any Buyer) relating to or arising out of the transactions contemplated hereby, including, without limitation, any fees or commissions payable to the
Agent. 
 (g) Pledge of Securities. The Company acknowledges and agrees that the Securities may be pledged by any
Investor in connection with a bona fide margin agreement or other bona fide loan or financing arrangement that is secured by the Securities. Such pledge of Securities shall not be deemed to be a transfer, sale or assignment of the Securities
hereunder, and no Investor effecting such pledge of Securities shall be required to provide the Company with any notice thereof or otherwise make any delivery to the Company pursuant to this Agreement or any other Transaction Document. The Company
hereby agrees, subject to applicable securities laws, to execute and deliver such documentation as a pledgee of the Securities may reasonably request in connection with a pledge of the Securities to such pledgee by an Investor. 

(h) Disclosure of Transactions and Other Material Information. The Company shall (i) on or before 9:00 a.m., New
York City time, on June 26, 2015, issue a press release reasonably acceptable to the Buyers describing the terms of the transactions contemplated by the Transaction Documents (the “Press Release”) and (ii) on or before
12:00 p.m., New York City time, on June 26, 2015 file a Current Report on Form 8-K reasonably acceptable to the Buyers describing the terms of the transactions contemplated by the Transaction Documents in the form required by the 1934 Act and
attaching the material Transaction Documents (including, without limitation, this Agreement, the form of Warrants and the form of the Securities Escrow Agreement) as exhibits to such filing (including all attachments), the “8-K
Filing”). As of immediately following the issuance of the Press Release, no Buyer shall be in possession of any material, nonpublic information received from the Company, any of its Subsidiaries or any of their respective officers,
directors, employees, Affiliates or agents, that is not disclosed in the Press Release or in prior filings with the SEC. In addition, effective upon the issuance of the Press Release, the Company acknowledges and agrees that any and all
confidentiality or similar obligations under any agreement, whether written or oral, between the Company, any of its Subsidiaries or any of their respective officers, directors, Affiliates, employees or agents, on the one hand, and any of the Buyers
or any of their Affiliates, on the other hand, shall terminate. The Company understands and confirms that each of the Buyers will rely on the foregoing in effecting transactions in securities of the Company. The Company shall not, and shall cause
each of its Subsidiaries and its and each of their respective officers, directors, employees, Affiliates and agents, not to, provide any Buyer with any material, nonpublic information regarding the Company or any of its Subsidiaries from and after
the issuance of the Press Release without the express prior written consent of such Buyer. If a Buyer has, or believes it has, received any such material, nonpublic information regarding the 

  
 36 








 
Company or any of its Subsidiaries from the Company, any of its Subsidiaries or any of their respective officers, directors, employees, Affiliates or agents, it may provide the Company with
written notice thereof in which case the Company shall, within two (2) Trading Days (as defined in the Warrants) of receipt of such notice, make public disclosure of such material, nonpublic information. In the event of a breach of the
foregoing covenant by the Company, any of its Subsidiaries, or any of its or their respective officers, directors, employees, Affiliates and agents, in addition to any other remedy provided herein or in the Transaction Documents, a Buyer shall have
the right to make a public disclosure, in the form of a press release, public advertisement or otherwise, of such material, nonpublic information without the prior approval by the Company, its Subsidiaries, or any of its or their respective
officers, directors, employees, Affiliates or agents. No Buyer shall have any liability to the Company, its Subsidiaries, or any of its or their respective officers, directors, employees, Affiliates or agents for any such disclosure. To the extent
the Company or any of its or their respective officers, directors, employees, Affiliates or agents delivers any material, non-public information to a Buyer without such Buyer’s consent, the Company hereby covenants and agrees that such Buyer
shall not have any duty of confidentiality to the Company, any of its Subsidiaries or any of their respective officers, directors, employees, Affiliates or agents with respect to, or a duty to the Company, any of its Subsidiaries or any of their
respective officers, directors, employees, Affiliates or agents not to trade on the basis of, such material, non-public information. Subject to the foregoing, neither the Company, its Subsidiaries nor any Buyer shall issue any press releases or any
other public statements with respect to the transactions contemplated by the Transaction Documents; provided, however, that the Company shall be entitled, without the prior approval of any Buyer, to make any press release or other
public disclosure with respect to such transactions (i) in substantial conformity with the Press Release and 8-K Filing and contemporaneously therewith and (ii) as is required by applicable law, regulation or any Eligible Market on which
the Company’s securities are then listed or quoted (provided that in the case of clause (i) each Buyer shall be consulted by the Company in connection with any such press release or other public disclosure prior to its release). Without
the prior written consent of any applicable Buyer, neither the Company nor any of its Subsidiaries or Affiliates shall disclose the name of such Buyer in any filing, announcement, release or otherwise other than in connection with the Registration
Statement unless such disclosure is required by law, regulation or any Eligible Market on which the Company’s securities are then listed or quoted.  

(i) Additional Warrants; Variable Securities. So long as any Buyer beneficially owns any Securities, the Company will
not issue any Warrants other than to the Buyers as contemplated hereby. Until the two (2) year anniversary of the Closing Date, the Company shall not, without the prior written consent of the Required Holders, in any manner, issue or sell any
rights, warrants or options to subscribe for or purchase Common Stock or directly or indirectly convertible into or exchangeable or exercisable for Common Stock at a price which varies or may vary with the market price of the Common Stock, including
by way of one or more reset(s) to any fixed price unless the conversion, exchange or exercise price of any such security cannot be less than the then applicable Exercise Price (as defined in the Warrants) with respect to the Common Stock into which
any Warrant is exercisable. Notwithstanding the foregoing, the Company may issue shares of Common Stock upon conversion of Options and Convertible Securities which are outstanding on the day immediately preceding the date hereof; provided
that the terms of such Options or Convertible Securities are not amended, modified or changed on or after the date hereof without the prior written consent of the Required Holders; provided, further, that the Company shall be permitted to
effect an Option repricing with respect to employee options under its existing Long-Term Incentive Plan as in effect on the date hereof. 

  
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 (j) Corporate Existence. So long as any Buyer beneficially owns any
Securities, the Company shall (i) maintain its corporate existence and (ii) not be party to any Fundamental Transaction unless the Company is in compliance with the applicable provisions governing Fundamental Transactions set forth in the
Warrants. 
 (k) Reservation of Shares. So long as any Buyer owns any Warrants, the Company shall take all action
necessary to at all times have authorized, and reserved for the purpose of issuance, no less than the number of shares of Common Stock issuable upon exercise of the Warrants then outstanding (without taking into account any limitations on the
exercise of the Warrants set forth in the Warrants, including, without limitation, the Maximum Percentage) (the “Required Reserve Amount”). So long as any Buyer owns any Securities, the Company shall take all action necessary to at
all times have authorized, and reserved for issuance the Required Reserve Amount. If at any time the number of shares of Common Stock authorized and reserved for issuance is not sufficient to meet the Required Reserve Amount, then, the Company will
promptly take all corporate action necessary to authorize and reserve a sufficient number of shares, including, without limitation, calling a special meeting of shareholders to authorize additional shares to meet the Company’s obligations under
Section 3(e), in the case of an insufficient number of authorized shares, obtain shareholder approval of an increase in such authorized number of shares, and voting the management shares of the Company in favor of an increase in the authorized
shares of the Company to ensure that the number of authorized shares is sufficient to meet the Required Reserve Amount. Upon any increase in the number of authorized or unreserved shares of Common Stock of the Company following the date hereof, the
Company shall use such increased number of authorized shares to satisfy its obligations to keep the Required Reserve Amount of shares reserved for the Securities before reserving or using shares for any other purpose. The initial number of shares of
Common Stock reserved for exercise of the Warrants and each increase in the number of shares so reserved shall be allocated pro rata among the Purchasers, based on the number of shares of Common Stock issuable upon exercise of the Warrants (without
regard to any limitations in exercise, including, without limitation, the Maximum Percentage) issued to each Purchaser on the Closing Date (the “Authorized Share Allocation”). In the event that a Purchaser shall sell or otherwise
transfer any of its Warrants, each transferee shall be allocated a pro rata portion of such holder’s Authorized Share Allocation. Any shares of Common Stock reserved and allocated to any Person which ceases to hold any Warrants shall be
allocated to the holders of the remaining Warrants, pro rata based on the shares of Common Stock issuable upon exercise of the Warrants then held by such holders (without regard to any limitations on the exercise of the Warrants). 

(l) Conduct of Business. The business of the Company and its Subsidiaries shall not be conducted in violation of any
law, ordinance or regulation of any governmental entity, except where such violations would not result, either individually or in the aggregate, in a Material Adverse Effect. 

(m) Securities Escrow Agreement. The Company shall not amend or waive any provision of the Securities Escrow Agreement
and shall enforce the provisions of the Securities Escrow Agreement in accordance with its terms. If the Transfer Agent breaches any provision 

  
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of the Securities Escrow Agreement, the Company shall promptly use its best efforts to seek specific performance of the terms of the Securities Escrow Agreement in accordance with the terms
thereof. In addition, if the Company receives any notice from the Transfer Agent pursuant to the Securities Escrow Agreement, the Company shall promptly, but in no event later than two (2) Business Days, deliver a copy of such notice to
each Buyer. 
 (n) Additional Issuances of Securities. 

(i) For purposes of this Section 4(n), the following definitions shall apply. 

(1) “Approved Stock Plan” means any employee benefit plan which has been approved by the Board of Directors
of the Company, pursuant to which the Company’s securities may be issued to any employee, officer, director or consultant for services provided to the Company. 

(2) “Common Stock Equivalents” means, collectively, Options and Convertible Securities. 

(3) “Convertible Securities” means any stock or securities (other than Options) convertible into or
exercisable or exchangeable for shares of Common Stock. 
 (4) “Excluded Securities” means any Common Stock
issued or issuable: (i) in connection with any Approved Stock Plan, provided, however, that no more than an aggregate of 150,000 (as adjusted for any stock dividend, stock split, stock combination, reclassification or similar
transaction after the date hereof) shares of Common Stock are issued or issuable to consultants hereunder as Excluded Securities, (ii) upon exercise of any Warrants and the warrants issued to the Agent by the Company as compensation for the
transactions contemplated hereby (the “Agent Warrants”); provided, that the terms of such Warrants and Agent Warrants are not amended, modified or changed on or after the date hereof without the prior written consent of the
Required Holders, (iii) upon conversion or exercise of any Options or Convertible Securities which are outstanding on the day immediately preceding the date hereof; provided, that the terms of such Options or Convertible Securities are
not amended, modified or changed on or after the date hereof; provided, further, that the Company shall be permitted to amend, modify or change the terms of such Options or Convertible Securities so long any such amendment,
modification or change does not, individually or in the aggregate, result in an issuance or potential issuance of a number of additional shares of Common Stock that would cause the Maximum Adjustment Shares Limit to be exceeded; provided,
further, that shares of Common Stock issued with respect to those certain warrants issued to the Retail Investors (as defined in the February 2015 SPA) on February 27, 2015 shall be deemed Excluded Securities hereunder only so long as
the Company does not offer terms to such Retail Investors for the issuance on any such shares of Common Stock that are more favorable than any terms offered to the Buyers under the February 2015 SPA (a “February 2015 Buyer”) with
respect to their Series A Warrants and Series C Warrants (each as defined in the February 2015 SPA) as set forth in those certain Exchange 

  
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Agreements, each dated as of June 25, 2015, by and between the Company and such February 2015 Buyer; (iv) to vendors or consultants for services rendered to the Company;
provided, however, that no more than an aggregate of 100,000 (as adjusted for any stock dividend, stock split, stock combination, reclassification or similar transaction after the date hereof) shares of Common Stock are issued or
issuable to vendors or consultants hereunder as Excluded Securities; (v) to Silicon Valley Bank in connection with extending the maturity date of the indebtedness evidenced by that certain Loan and Security Agreement dated as of
December 19, 2011 by and among Real Goods Energy Tech, INC., Real Goods Trading Corporation, Earth Friendly Energy Group Holdings, LLC, Alteris Renewables, INC., Earth Friendly Energy Group, LLC, Solar Works, LLC, Alteris RPS, LLC and Alteris
ISI, LLC and Silicon Valley Bank; provided, however, that no more than an aggregate of 100,000 (as adjusted for any stock dividend, stock split, stock combination, reclassification or similar transaction after the date hereof) shares
of Common Stock are issued or issuable to the senior lender under such indebtedness hereunder as Excluded Securities; (vi) as Adjustment Shares and/or Capacity Shares to the Buyers pursuant terms of this Agreement or to the Retail Investors (as
defined in Section 1(b)) on the Closing Date pursuant to the terms of the Prospectus; and (vii) pursuant to that certain Riverside Conversion Agreement; provided, that the terms of the Riverside Conversion Agreement are not amended,
modified or changed on or after the date hereof. 
 (5) “Maximum Additional Share Limit” means a number of
shares of Common Stock not in excess of an aggregate of 250,000 additional shares of Common Stock (as adjusted for any stock dividend, stock split, stock combination, reclassification or similar transaction after the date hereof) which additional
shares are issued or issuable, individually or in the aggregate, solely as a result of an amendment, modification or change to the terms of Options or Convertible Securities outstanding on the date hereof, or solely for purposes of Section 4(o)
of the February 2015 SPA, outstanding on February 23, 2015. 
 (6) “Options” means any rights,
warrants or options to subscribe for or purchase shares of Common Stock or Convertible Securities. 
 (7) “Riverside
Conversion Agreement” dated as of June 23, 2015, by and between the Company and Riverside Fund III, L.P. 
 (ii) (A) The
Company shall not from the date hereof until the sixtieth (60th) day following the date hereof, (the “Trigger Date”) (x) directly or indirectly, offer, sell, grant any option to purchase, or otherwise dispose of (or
announce any offer, sale, grant or any option to purchase or other disposition of) any of its or its Subsidiaries’ equity or equity equivalent securities, including without limitation any debt, preferred stock or other instrument or security
that is, at any time during its life and under any circumstances, convertible into or exchangeable or exercisable for shares of Common Stock or Common Stock Equivalents (any such offer, sale, grant, disposition or announcement being referred to as a
“Subsequent Placement”) or be party to any solicitations, negotiations or discussions with regard to foregoing or (y) grant any registration rights to any Person that can be exercised prior to such date other than registration
rights included in agreements disclosed in the SEC Documents provided that the terms of such agreements are not amended, modified or changed on or after the date hereof without the prior written consent of the Required Holders. 

  
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 (B) In addition to the foregoing, until the two (2) year anniversary of the Closing Date,
the Company shall not, without the prior written consent of the Required Holders, directly or indirectly, issue any of its or its Subsidiaries’ securities in respect of, including, without limitation, as an amendment to or in exchange for, any
existing Indebtedness or existing securities, including, without limitation, any warrants, Options or Convertible Securities, of the Company without obtaining the prior written consent of the Required Holders. Notwithstanding the foregoing, the
Company may issue shares of Common Stock upon conversion of Options and Convertible Securities which are outstanding on the day immediately preceding the date hereof; provided that the terms of such Options or Convertible Securities are not
amended, modified or changed on or after the date hereof without the prior written consent of the Required Holders; provided, further, that the Company shall be permitted to amend, modify or change the terms of such Options or
Convertible Securities so long any such amendment, modification or change does not, individually or in the aggregate, result in an issuance of or potential issuance of a number of additional shares of Common Stock that would cause the Maximum
Adjustment Shares Limit to be exceeded; provided, further, that the Company shall be permitted to effect an Option repricing with respect to employee options under its existing Long-Term Incentive Plan as in effect on the date hereof.

 (iii) From the Trigger Date until the two (2) year anniversary of the Closing Date, the Company will not, directly or indirectly,
effect any Subsequent Placement unless the Company shall have first complied with this Section 4(n)(iii). 
 (1) The
Company shall deliver to each Buyer whose aggregate Purchase Price equals at least $1,000,000 (a “Qualifying Buyer”) an irrevocable written notice to the contact information as is set forth opposite such Qualifying Buyer’s name
in column (2a) of the Schedule of Buyers attached hereto (the “Offer Notice”) of any proposed or intended issuance or sale or exchange (the “Offer”) of the securities being offered (the “Offered
Securities”) in a Subsequent Placement, which Offer Notice shall (w) identify and describe the Offered Securities, (x) describe the price and other terms upon which they are to be issued, sold or exchanged, and the number or
amount of the Offered Securities to be issued, sold or exchanged, (y) identify the persons or entities (if known) to which or with which the Offered Securities are to be offered, issued, sold or exchanged and (z) offer to issue and sell to
or exchange with such Qualifying Buyers at least ten percent (10%) of the Offered Securities, allocated among such Qualifying Buyers (a) based on such Qualifying Buyer’s pro rata portion of the number of shares of Common Stock issuable
upon exercise in full of the Warrants (without regard to any limitations on exercise) purchased hereunder (the “Basic Amount”) and (b) with respect to each Qualifying Buyer that elects to purchase its Basic Amount, any
additional portion of the Offered Securities attributable to the Basic Amounts of other Qualifying Buyers as such Qualifying Buyer shall indicate it will purchase or acquire should the other Qualifying Buyers subscribe for less than their Basic
Amounts (the “Undersubscription Amount”), which process shall be repeated until the Qualifying Buyers shall have an opportunity to subscribe for any remaining Undersubscription Amount. 

  
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 (2) To accept an Offer, in whole or in part, such Qualifying Buyer must deliver
a written notice to the Company prior to the end of the fifth (5th) Business Day after such Qualifying Buyer’s receipt of the Offer Notice (the “Offer Period”), setting
forth the portion of such Qualifying Buyer’s Basic Amount that such Qualifying Buyer elects to purchase and, if such Qualifying Buyer shall elect to purchase all of its Basic Amount, the Undersubscription Amount, if any, that such Qualifying
Buyer elects to purchase (in either case, the “Notice of Acceptance”). If the Basic Amounts subscribed for by all Qualifying Buyers are less than the total of all of the Basic Amounts, then each Qualifying Buyer who has set forth an
Undersubscription Amount in its Notice of Acceptance shall be entitled to purchase, in addition to the Basic Amounts subscribed for, the Undersubscription Amount it has subscribed for; provided, however, that if the Undersubscription
Amounts subscribed for exceed the difference between the total of all the Basic Amounts and the Basic Amounts subscribed for (the “Available Undersubscription Amount”), each Qualifying Buyer who has subscribed for any
Undersubscription Amount shall be entitled to purchase only that portion of the Available Undersubscription Amount as the Basic Amount of such Qualifying Buyer bears to the total Basic Amounts of all Qualifying Buyers that have subscribed for
Undersubscription Amounts, subject to rounding by the Company to the extent its deems reasonably necessary. Notwithstanding anything to the contrary contained herein, if the Company desires to modify or amend the terms and conditions of the Offer
prior to the expiration of the Offer Period, the Company may deliver to the Qualifying Buyers a new Offer Notice and the Offer Period shall expire on the third (3rd) Business Day after such
Qualifying Buyer’s receipt of such new Offer Notice. 
 (3) The Company shall have five (5) Business Days after
the expiration of the Offer Period above to offer, issue, sell or exchange all or any part of such Offered Securities as to which a Notice of Acceptance has not been given by the Qualifying Buyers (the “Refused Securities”) pursuant
to a definitive agreement (the “Subsequent Placement Agreement”), but only to the offerees described in the Offer Notice (if so described therein) and only upon terms and conditions (including, without limitation, unit prices and
interest rates) that are not more favorable to the acquiring Person or Persons or less favorable to the Company than those set forth in the Offer Notice and (ii) to publicly announce (a) the execution of such Subsequent Placement Agreement
and (b) either (x) the consummation of the transactions contemplated by such Subsequent Placement Agreement or (y) the termination of such Subsequent Placement Agreement, which, if required to ensure that the Qualifying Buyers will
not be in possession of material non-public information, shall be filed with the SEC on a Current Report on Form 8-K with such Subsequent Placement Agreement and, as so required, any documents contemplated therein filed as exhibits thereto. 

(4) In the event the Company shall propose to sell less than all the Refused Securities (any such sale to be in the manner and
on the terms specified in Section 4(n)(iii)(3) above), then each Qualifying Buyer may, at its sole option and in its sole discretion, reduce the number or amount of the Offered Securities specified in its Notice of Acceptance to an amount that
shall be not less than the number or amount of the Offered Securities that such Qualifying Buyer elected to purchase pursuant to Section 4(n)(iii)(2) above multiplied by a fraction, (i) the numerator of which shall be the number


  
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or amount of Offered Securities the Company actually proposes to issue, sell or exchange (including Offered Securities to be issued or sold to Qualifying Buyers pursuant to
Section 4(n)(iii)(3) above prior to such reduction) and (ii) the denominator of which shall be the original amount of the Offered Securities. In the event that any Qualifying Buyer so elects to reduce the number or amount of Offered
Securities specified in its Notice of Acceptance, the Company may not issue, sell or exchange more than the reduced number or amount of the Offered Securities unless and until such securities have again been offered to the Qualifying Buyers in
accordance with Section 4(n)(iii)(1) above. 
 (5) Upon the closing of the issuance, sale or exchange of all or less
than all of the Refused Securities, the Qualifying Buyers shall acquire from the Company, and the Company shall issue to the Qualifying Buyers, the number or amount of Offered Securities specified in the Notices of Acceptance, as reduced pursuant to
Section 4(n)(iii)(4) above if the Qualifying Buyers have so elected, upon the terms and conditions specified in the Offer. The purchase by the Qualifying Buyers of any Offered Securities is subject in all cases to the preparation, execution and
delivery by the Company and the Qualifying Buyers of a purchase agreement relating to such Offered Securities in the form executed by all of the purchasers of the Refused Securities. 

(6) Any Offered Securities not acquired by the Qualifying Buyers or other persons in accordance with Section 4(n)(iii)(3)
above may not be issued, sold or exchanged until they are again offered to the Qualifying Buyers under the procedures specified in this Agreement. 

(7) The Company and the Qualifying Buyers agree that if any Qualifying Buyer elects to participate in the Offer,
(x) neither the Subsequent Placement with respect to such Offer nor any other transaction documents related thereto (collectively, the “Subsequent Placement Documents”) shall include any term or provisions whereby any
Qualifying Buyer shall be required to agree to any restrictions in trading as to any securities of the Company owned by such Qualifying Buyer prior to such Subsequent Placement and (y) the Qualifying Buyers shall be entitled to the same
registration rights provided to the other investors in the Subsequent Placement. 
 (8) Notwithstanding anything to the
contrary in this Section 4(n) and unless otherwise agreed to by the Qualifying Buyers, the Company shall either confirm in writing to the Qualifying Buyers that the transaction with respect to the Subsequent Placement has been abandoned or
shall publicly disclose its intention to issue the Offered Securities, in either case in such a manner such that the Qualifying Buyers will not be in possession of material non-public information, by the tenth (10th) Business Day following delivery of the Offer Notice. If by the tenth (10th) Business Day following delivery of the Offer Notice no
public disclosure regarding a transaction with respect to the Offered Securities has been made, and no notice regarding the abandonment of such transaction has been received by the Qualifying Buyers, such transaction shall be deemed to have been
abandoned and the Qualifying Buyers shall not be deemed to be in possession of any material, non-public information with respect to the Company. Should the Company decide to pursue such transaction with respect to the Offered Securities, the Company
shall provide each Qualifying Buyer with another Offer Notice and each 

  
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Qualifying Buyer will again have the right of participation set forth in this Section 4(n)(iii). The Company shall not be permitted to deliver more than one such Offer Notice to the
Qualifying Buyers in any 30 day period (other than the Offer Notices contemplated by the last sentence of Section 4(n)(iii)(2) of this Agreement). 

(iv) The restrictions contained in subsections (ii) and (iii) of this Section 4(n) shall not apply in connection with the
issuance of any Excluded Securities. 
 (v) The right of participation set forth in Section 4(o)(iii) of the February 2015 SPA is
hereby extended until the two (2) year anniversary of the Closing of the transactions set forth in this Agreement and the defined term “Excluded Securities” set forth therein shall be modified to allow the Company to amend, modify or
change the terms of Options or Convertible Securities so long any such amendment, modification or change does not, individually or in the aggregate, result in an issuance or potential issuance of a number of additional shares of Common Stock that
would cause the Maximum Adjustment Shares Limit to be exceeded. 
 (o) Warrant Share Characteristics. If Warrant
Shares are issued upon exercise of the Warrants in a Cashless Exercise (as defined in the Warrants), the Company acknowledges and agrees that in accordance with Section 3(a)(9) of the 1933 Act, the Warrant Shares shall take on the registered
characteristics of the Warrants with respect to which such Warrant Shares are being issued, and the holding period of such Warrants may be tacked on to the holding period of the Warrant Shares. The Company agrees not to take any position
contrary to this Section 4(o) for purposes of Section 3(a)(9) or Rule 144 of the 1933 Act. 
 (p) Reporting
Status. Until the date on which the Buyers shall have sold all of the Common Shares, Adjustment Shares, Capacity Shares and Warrant Shares and none of the Warrants are outstanding (the “Reporting Period”), the Company shall
timely file all reports required to be filed with the SEC pursuant to the 1934 Act, provided, that for the purposes of this Agreement, a report shall not be considered untimely solely because it is filed after such report’s due date, so
long as it is filed within the time periods set forth in Rule 12b-25 of the 1934 Act (“Rule 12b-25”). Further, until such date, the Company shall not terminate its status as an issuer required to file reports under the 1934 Act even
if the 1934 Act or the rules and regulations thereunder would no longer require or otherwise permit such termination, and the Company shall take all commercially reasonable actions necessary to maintain its eligibility to issue Securities to the
Buyers on Form S-3. 
 (q) Public Information. At any time during the
period commencing from the six (6) month anniversary of the Closing Date and ending at such time that all of the Securities, if a registration statement is not available for the resale of all of the Securities, may be sold without restriction
or limitation pursuant to Rule 144 and without the requirement to be in compliance with Rule 144(c)(1), if the Company shall (i) fail for any reason to satisfy the requirements of Rule 144(c)(1), including, without limitation, the failure to
satisfy the current public information requirement under Rule 144(c) or (ii) if the Company has ever been an issuer described in Rule 144(i)(1)(i) or becomes such an issuer in the future, and the Company shall fail to satisfy any condition set
forth in Rule 144(i)(2) (a “Public Information Failure”) then, as partial relief for the damages to any holder of Securities by reason of any such delay in or 

  
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reduction of its ability to sell the Securities (which remedy shall not be exclusive of any other remedies available at law or in equity), the Company shall pay to each such holder an amount in
cash equal to one percent (1.0%) of the aggregate Purchase Price of such Investor’s Securities on the day of a Public Information Failure and on every thirtieth day (pro-rated for periods totaling less than thirty days) thereafter until
the earlier of (i) the date such Public Information Failure is cured and (ii) such time that such public information is no longer required pursuant to Rule 144. The payments to which a holder shall be entitled pursuant to this
Section 4(q) are referred to herein as “Public Information Failure Payments.” Public Information Failure Payments shall be paid on the earlier of (I) the last day of the calendar month during which such Public Information
Failure Payments are incurred and (II) the third Business Day after the event or failure giving rise to the Public Information Failure Payments is cured. In the event the Company fails to make Public Information Failure Payments in a timely manner,
such Public Information Failure Payments shall bear interest at the rate of 1.5% per month (prorated for partial months) until paid in full. Notwithstanding the foregoing, no payment shall be required if the Company fails to satisfy the current
public information requirement set forth in Rule 144(c) during the grace period provided by Rule 12b-25, so long as the Company makes the applicable filing within the time periods set forth in Rule 12b-25. 

(r) Closing Documents. On or prior to twenty-five (25) calendar days after the Closing Date, the Company agrees to
deliver, or cause to be delivered, to each Buyer and Schulte Roth & Zabel LLP a complete closing set of the executed Transaction Documents, Securities and any other documents required to be delivered to any party pursuant to Section 7
hereof or otherwise. 
 5. REGISTER; TRANSFER AGENT INSTRUCTIONS. 

(a) Register. The Company shall maintain at its principal executive offices (or such other office or agency of the
Company as it may designate by notice to each holder of Securities), a register for the Warrants in which the Company shall record the name and address of the Person in whose name the Warrants have been issued (including the name and address of each
transferee) and the number of Warrant Shares issuable upon exercise of the Warrants held by such Person. The Company shall keep the register open and available at all times during business hours for inspection of any Buyer or its legal
representatives. 
 (b) Transfer Agent Instructions. The Company shall issue irrevocable instructions to the Transfer
Agent, in a form acceptable to the Buyers (the “Irrevocable Transfer Agent Instructions”) to issue certificates or credit shares to the applicable balance accounts at DTC, registered in the name of each Buyer or its respective
nominee(s), for the Warrant Shares issued pursuant to the terms of the Transaction Documents in such amounts as specified from time to time by each Buyer to the Company upon exercise of the Warrants. The Company warrants that no instruction other
than the Irrevocable Transfer Agent Instructions referred to in this Section 5(b) will be given by the Company to the Transfer Agent and that the Securities shall otherwise be freely transferable on the books and records of the Company as and
to the extent provided in this Agreement and the other Transaction Documents. The Company acknowledges that a breach by it of its obligations hereunder will cause irreparable harm to each Buyer. Accordingly, the Company acknowledges that the remedy
at law for a breach of its obligations under this Section 5 will be inadequate and agrees, in the event of a 

  
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breach or threatened breach by the Company of the provisions of this Section 5, that each Buyer shall be entitled, in addition to all other available remedies, to an order and/or injunction
restraining any breach and requiring immediate issuance and transfer, without the necessity of showing economic loss and without any bond or other security being required. 

6. CONDITIONS TO THE COMPANY’S OBLIGATION TO SELL. 

The obligation of the Company hereunder to issue, sell and deliver the Common Shares and the related Adjustment Shares, Capacity Shares and
Warrants to each Buyer at the Closing is subject to the satisfaction, at or before the Closing Date, of each of the following conditions, provided that these conditions are for the Company’s sole benefit and may be waived by the Company at any
time in its sole discretion by providing each Buyer with prior written notice thereof: 
 (a) Such Buyer shall have executed
this Agreement and each other Transaction Document to be executed by such Buyer, and delivered the same to the Company. 

(b) Such Buyer shall have delivered its Purchase Price to the Company (less, in the case of the Lead Investor, the amounts
withheld pursuant to Section 4(f)) for the Common Shares and the related Adjustment Shares, Capacity Shares and Warrants being purchased by such Buyer at the Closing by wire transfer of immediately available funds pursuant to an escrow account
established by the Company and the Placement Agent with Signature Bank (or such other bank mutually agreed to by the Company and the Agent), as escrow agent, in accordance with the Company’s written wire instructions, which funds shall be
subject to the terms and conditions of such escrow. 
 (c) The representations and warranties of such Buyer shall be true and
correct in all material respects (except for those representations and warranties that are qualified by materiality or Material Adverse Effect, which shall be true and correct in all respects) as of the date when made and as of the Closing Date as
though made at that time (except for representations and warranties that speak as of a specific date, which shall be true and correct in all material respects (except for those representations and warranties that are qualified by materiality or
Material Adverse Effect, which shall be true and correct in all respects) as of such specified date), and such Buyer shall have performed, satisfied and complied in all material respects with the covenants, agreements and conditions required by this
Agreement to be performed, satisfied or complied with by such Buyer at or prior to the Closing Date. 
 (d) No litigation,
statute, rule, regulation, executive order, decree, ruling or injunction shall have been enacted, entered, promulgated or endorsed by or in any court or governmental authority of competent jurisdiction or any self-regulatory organization having
authority over the matters contemplated hereby which prohibits the consummation of any of the transactions contemplated by this Agreement. 

7. CONDITIONS TO EACH BUYER’S OBLIGATION TO PURCHASE. 

The obligation of each Buyer hereunder to purchase the Common Shares and the related Adjustment Shares, Capacity Shares and Warrants at the
Closing is subject to the satisfaction, at or before the Closing Date, of each of the following conditions, provided that these conditions are for each Buyer’s sole benefit and may be waived by such Buyer at any time in its sole discretion by
providing the Company with prior written notice thereof: 
 (a) The Company shall have duly executed and delivered to such
Buyer, each of the following to which it is a party: (i) each of the Transaction Documents, (ii) the Common Shares (allocated in such amounts as such Buyer shall request), being purchased by such Buyer at the Closing pursuant to this
Agreement and (iii) the Warrants (allocated in such amounts as such Buyer shall request) being purchased by such Buyer at the Closing pursuant to this Agreement, being purchased by such Buyer at the Closing pursuant to this Agreement. 

  
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 (b) Such Buyer shall have received the opinions of Brownstein Hyatt Farber
Schreck, LLP, the Company’s outside counsel, dated as of the Closing Date, in a form acceptable to such Buyer. 
 (c)
The Company shall have delivered to such Buyer a copy of the Irrevocable Transfer Agent Instructions, in a form acceptable to such Buyer, which instructions shall have been delivered to and acknowledged in writing by the Transfer Agent. 

(d) The Company shall have delivered to such Buyer a certificate evidencing the formation and good standing of the Company in
its jurisdiction of formation issued by the Secretary of State (or comparable office) of such jurisdiction or a bring down of such good standing from Corporation Service Company, as of a date within ten (10) days before the Closing Date. 

(e) The Company shall have delivered to such Buyer a certificate evidencing the Company’s qualification as a foreign
corporation and good standing issued by the Secretary of State (or comparable office) of each jurisdiction in which the Company conducts business or a bring down of such good standing from Corporation Service Company, as of a date within ten
(10) days of the Closing Date. 
 (f) The Company shall have delivered to such Buyer a certified copy of the Articles of
Incorporation of the Company and each of its Subsidiaries as certified by the Secretary of State (or comparable office) of the jurisdiction of formation of the Company and each of its Subsidiaries within ten (10) days of the Closing Date. 

(g) The Company shall have delivered to such Buyer a certificate, executed by the Secretary of the Company and dated as of the
Closing Date, as to (i) the resolutions consistent with Section 3(d) as adopted by the Company’s and each of its Subsidiaries’ Board of Directors in a form reasonably acceptable to such Buyer, (ii) the Articles of
Incorporation of the Company and each of its Subsidiaries and (iii) the Bylaws of the Company and each of its Subsidiaries, each as in effect at the Closing, in the form attached hereto as Exhibit D. 

(h) The representations and warranties of the Company shall be true and correct in all material respects (except for those
representations and warranties that are qualified by materiality or Material Adverse Effect, which shall be true and correct in all respects) as of the date when made and as of the Closing Date as though made at that time (except for representations
and warranties that speak as of a specific date, which shall be true and correct in all material respects (except for those representations and warranties that are qualified by 

  
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materiality or Material Adverse Effect, which shall be true and correct in all respects) as of such specified date) and the Company shall have performed, satisfied and complied in all material
respects with the covenants, agreements and conditions required by the Transaction Documents to be performed, satisfied or complied with by the Company at or prior to the Closing Date. Such Buyer shall have received a certificate, executed by the
Chief Executive Officer of the Company, dated as of the Closing Date, to the foregoing effect and as to such other matters as may be reasonably requested by such Buyer in the form attached hereto as Exhibit E. 

(i) The Company shall have delivered to such Buyer a letter from the Transfer Agent certifying the number of shares of Common
Stock outstanding as of a date within five (5) days before the Closing Date. 
 (j) The Common Stock (I) shall be
designated for quotation or listed on the Principal Market and (II) shall not have been suspended, as of the Closing Date, by the SEC or the Principal Market from trading on the Principal Market, nor shall suspension by the SEC or the Principal
Market have been threatened, as of the Closing Date, either (A) in writing by the SEC or the Principal Market or (B) by falling below the minimum listing maintenance requirements of the Principal Market, other than as disclosed in the
Registration Statement and Prospectus Supplement. 
 (k) The Company shall have obtained all governmental, regulatory or
third party consents and approvals, if any, necessary for the sale of the Securities and the transactions contemplated by the Transaction Documents and all payments thereunder. 

(l) The Registration Statement shall be effective and available for the issuance and sale of the Securities hereunder and the
Company shall have delivered to such Buyer the Prospectus and the Prospectus Supplement as required thereunder. 
 (m) No
litigation, statute, rule, regulation, executive order, decree, ruling or injunction shall have been enacted, entered, promulgated or endorsed by or in any court or governmental authority of competent jurisdiction or any self-regulatory organization
having authority over the matters contemplated hereby which prohibits the consummation of any of the transactions contemplated by this Agreement. 

(n) The Securities Escrow Agreement shall have been executed and delivered to such Buyer by the Company and the Transfer Agent.

 (o) The Company shall have issued the Maximum Additional Shares in escrow in the name of the Transfer Agent in accordance
with the terms of the Securities Escrow Agreement. 
 (p) The Company shall have delivered to such Buyer such other documents
relating to the transactions contemplated by this Agreement as such Buyer or its counsel may reasonably request. 
 8. TERMINATION.
In the event that the Closing shall not have occurred with respect to a Buyer on or before five (5) Business Days from the date hereof due to the Company’s or such Buyer’s failure to satisfy the conditions set forth in Sections 6 and
7 above 

  
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(and the nonbreaching party’s failure to waive such unsatisfied condition(s)), the nonbreaching party shall have the option to terminate this Agreement with respect to such breaching party
at the close of business on such date by delivering a written notice to that effect to each other party to this Agreement and without liability of any party to any other party; provided, however, that if this Agreement is terminated
pursuant to this Section 8, the Company shall remain obligated to reimburse the Lead Investor or its designee(s), as applicable, for the expenses described in Section 4(f) above. 

9. MISCELLANEOUS. 

(a) Governing Law; Jurisdiction; Jury Trial. All questions concerning the construction, validity, enforcement and
interpretation of this Agreement shall be governed by the internal laws of the State of New York, without giving effect to any choice of law or conflict of law provision or rule (whether of the State of New York or any other jurisdictions) that
would cause the application of the laws of any jurisdictions other than the State of New York. Each party hereby irrevocably submits to the exclusive jurisdiction of the state and federal courts sitting in The City of New York, Borough of Manhattan,
for the adjudication of any dispute hereunder or in connection herewith or with any transaction contemplated hereby or discussed herein, and hereby irrevocably waives, and agrees not to assert in any suit, action or proceeding, any claim that it is
not personally subject to the jurisdiction of any such court, that such suit, action or proceeding is brought in an inconvenient forum or that the venue of such suit, action or proceeding is improper. Each party hereby irrevocably waives personal
service of process and consents to process being served in any such suit, action or proceeding by mailing a copy thereof to such party at the address for such notices to it under this Agreement and agrees that such service shall constitute good and
sufficient service of process and notice thereof. Nothing contained herein shall be deemed to limit in any way any right to serve process in any manner permitted by law. EACH PARTY HEREBY IRREVOCABLY WAIVES ANY RIGHT IT MAY HAVE, AND AGREES NOT
TO REQUEST, A JURY TRIAL FOR THE ADJUDICATION OF ANY DISPUTE HEREUNDER OR IN CONNECTION WITH OR ARISING OUT OF THIS AGREEMENT OR ANY TRANSACTION CONTEMPLATED HEREBY. 

(b) Counterparts. This Agreement may be executed in two or more identical counterparts, all of which shall be considered
one and the same agreement and shall become effective when counterparts have been signed by each party and delivered to the other party; provided that a facsimile signature shall be considered due execution and shall be binding upon the signatory
thereto with the same force and effect as if the signature were an original, not a facsimile signature. 
 (c)
Headings. The headings of this Agreement are for convenience of reference and shall not form part of, or affect the interpretation of, this Agreement. 

(d) Severability. If any provision of this Agreement is prohibited by law or otherwise determined to be invalid or
unenforceable by a court of competent jurisdiction, the provision that would otherwise be prohibited, invalid or unenforceable shall be deemed amended to apply to the broadest extent that it would be valid and enforceable, and the invalidity or
unenforceability of such provision shall not affect the validity of the remaining 

  
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provisions of this Agreement so long as this Agreement as so modified continues to express, without material change, the original intentions of the parties as to the subject matter hereof and the
prohibited nature, invalidity or unenforceability of the provision(s) in question does not substantially impair the respective expectations or reciprocal obligations of the parties or the practical realization of the benefits that would otherwise be
conferred upon the parties. The parties will endeavor in good faith negotiations to replace the prohibited, invalid or unenforceable provision(s) with a valid provision(s), the effect of which comes as close as possible to that of the prohibited,
invalid or unenforceable provision(s). 
 (e) Entire Agreement; Amendments. This Agreement and the other Transaction
Documents supersede all other prior oral or written agreements between the Buyers, the Company, their Affiliates and Persons acting on their behalf with respect to the matters discussed herein, and this Agreement, the other Transaction Documents and
the instruments referenced herein and therein contain the entire understanding of the parties with respect to the matters covered herein and therein and, except as specifically set forth herein or therein, neither the Company nor any Buyer makes any
representation, warranty, covenant or undertaking with respect to such matters. Provisions of this Agreement may be amended and the observance thereof 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 who were issued on the Closing Date 55% of the Common Shares and shall include the Lead Investor (the “Required Holders”). Any amendment or waiver effected
in accordance with, and any amendment to this Agreement made in conformity with the provisions of this Section 9(e) shall be binding on each Buyer and holders of Securities of the Company as applicable. No such amendment shall be effective to
the extent that it applies to less than all of the Buyers of Securities. No consideration shall be offered or paid to any Person to amend or consent to a waiver or modification of any provision of any of the Transaction Documents unless the same
consideration (other than the reimbursement of legal fees) also is offered to all of the parties to the Transaction Documents, the holders of Common Shares and holders of the Warrants. The Company has not, directly or indirectly, made any agreements
with any Buyers relating to the terms or conditions of the transactions contemplated by the Transaction Documents except as set forth in the Transaction Documents. Without limiting the foregoing, the Company confirms that, except as set forth in
this Agreement, no Buyer has made any commitment or promise or has any other obligation to provide any financing to the Company or otherwise. 

(f) Notices. Any notices, consents, waivers or other communications required or permitted to be given under the terms of
this Agreement must be in writing and will be deemed to have been delivered: (i) upon receipt, when delivered personally; (ii) upon receipt, when sent by facsimile (provided confirmation of transmission is mechanically or electronically
generated and kept on file by the sending party) or by electronic mail; or (iii) one Business Day after deposit with an overnight courier service, in each case properly addressed to the party to receive the same. The addresses, facsimile
numbers and e-mail address for such communications shall be: 
 If to the Company: 

 

			
	 Real Goods Solar, Inc.
 833 West
South Boulder Road,
 Louisville, CO 80027

	Telephone:		(303) 222-8541
	Facsimile:		1-877-835-4834
	E-mail:		Dennis.Lacey@rgsenergy.com
	Attention:		Dennis Lacey



  
 50 








 with a copy (for informational purposes only) to: 

 

			
	 Brownstein Hyatt Farber Schreck, LLP

410 Seventeenth Street, Suite 2200
 Denver, CO 80202

	Telephone:		(303) 223-1100
	Facsimile:		(303) 223-1111
	E-mail:		KMacdonald@BHFS.com
	Attention:		Kristin M. Macdonald


 If to the Transfer Agent: 

Computershare Trust Company, N.A. 

P.O. Box 30170 

College Station, TX 77842-3170 

Telephone:    (800) 962 -4284 

Facsimile:                   
   
 Attention: Agent 

If to a Buyer, to its address, facsimile number and e-mail address set forth on the Schedule of Buyers, with copies to such Buyer’s representatives as
set forth on the Schedule of Buyers, 
 with a copy (for informational purposes only) to: 

 

			
	Schulte Roth & Zabel LLP
	919 Third Avenue
	New York, New York 10022
	Telephone:		(212) 756-2000
	Facsimile:		(212) 593-5955
	Attention:		Eleazer N. Klein, Esq.
	E-mail:		eleazer.klein@srz.com


 or to such other address, facsimile number and/or email-address and/or to the attention of such other Person as the
recipient party has specified by written notice given to each other party five (5) days prior to the effectiveness of such change. Written confirmation of receipt (A) given by the recipient of such notice, consent, waiver or other
communication, (B) mechanically or electronically generated by the sender’s facsimile machine or e-mail containing the time, date, recipient facsimile number and an image of the first page of such transmission or (C) provided by an
overnight courier service shall be rebuttable evidence of personal service, receipt by facsimile or receipt from an overnight courier service in accordance with clause (i), (ii) or (iii) above, respectively. 

  
 51 








 (g) Successors and Assigns. This Agreement shall be binding upon and inure
to the benefit of the parties and their respective successors and assigns, including any purchasers of the Warrants. The Company shall not assign this Agreement or any rights or obligations hereunder without the prior written consent of the Required
Holders, including by way of a Fundamental Transaction (unless the Company is in compliance with the applicable provisions governing Fundamental Transactions set forth in the Warrants). A Buyer may assign some or all of its rights hereunder without
the consent of the Company, in which event such assignee shall be deemed to be a Buyer hereunder with respect to such assigned rights 

(h) No Third Party Beneficiaries. This Agreement is intended for the benefit of the parties hereto and their respective
permitted successors and assigns, and is not for the benefit of, nor may any provision hereof be enforced by, any other Person, except that each Indemnitee shall have the right to enforce the obligations of the Company with respect to
Section 9(k). 
 (i) Survival. Unless this Agreement is terminated under Section 8, the representations and
warranties of the Company and the Buyers contained in Sections 2 and 3, and the agreements and covenants set forth in Sections 4, 5 and 9 shall survive the Closing. Each Buyer shall be responsible only for its own representations, warranties,
agreements and covenants hereunder. 
 (j) Further Assurances. Each party shall do and perform, or cause to be done
and performed, all such further acts and things, and shall execute and deliver all such other agreements, certificates, instruments and documents, as any other party may reasonably request in order to carry out the intent and accomplish the purposes
of this Agreement and the consummation of the transactions contemplated hereby. 
 (k) Indemnification. (i) In
consideration of each Buyer’s execution and delivery of the Transaction Documents and acquiring the Securities thereunder and in addition to all of the Company’s other obligations under the Transaction Documents, the Company shall defend,
protect, indemnify and hold harmless each Buyer and each other holder of the Securities and all of their shareholders, partners, members, officers, directors, employees and direct or indirect investors and any of the foregoing Persons’ agents
or other representatives (including, without limitation, those retained in connection with the transactions contemplated by this Agreement) (collectively, the “Indemnitees”) from and against any and all actions, causes of action,
suits, claims, losses, costs, penalties, fees, liabilities and damages, and expenses in connection therewith (irrespective of whether any such Indemnitee is a party to the action for which indemnification hereunder is sought), and including
reasonable attorneys’ fees and disbursements (the “Indemnified Liabilities”), incurred by any Indemnitee as a result of, or arising out of, or relating to (a) any misrepresentation or breach of any representation or
warranty made by the Company in the Transaction Documents or any other certificate, instrument or document contemplated hereby or thereby, (b) any breach of any covenant, agreement or obligation of the Company contained in the Transaction
Documents or any other certificate, instrument or document contemplated hereby or thereby or (c) any cause of action, suit or claim brought or made against such Indemnitee by a third party (including for these purposes a derivative action
brought on behalf of the Company) and arising out of or resulting from (i) the execution, delivery, performance or enforcement of the Transaction Documents or 

  
 52 








 
any other certificate, instrument or document contemplated hereby or thereby, (ii) any transaction financed or to be financed in whole or in part, directly or indirectly, with the proceeds
of the issuance of the Securities, (iii) any disclosure made by such Buyer pursuant to Section 4(h) or (iv) the status of such Buyer or holder of the Securities as an investor in the Company, pursuant to the transactions contemplated
by the Transaction Documents; provided, however, that the Company shall not shall be liable in any such case solely to the extent that any such loss, claim, damage, expense or liability arises out of or is based upon an untrue
statement or alleged untrue statement in, or omission or alleged omission from any Preliminary Prospectus, any Registration Statement or the Prospectus, or any Issuer Free Writing Prospectus made in reliance upon and in conformity with written
information furnished to the Company by or on behalf of any Buyer specifically for use therein. To the extent that the foregoing undertaking by the Company may be unenforceable for any reason, the Company shall make the maximum contribution to the
payment and satisfaction of each of the Indemnified Liabilities that is permissible under applicable law. 
 (ii) Promptly after receipt by
an Indemnitee under this Section 9(k) of notice of the commencement of any action or proceeding (including any governmental action or proceeding) involving an Indemnified Liability, such Indemnitee shall, if a claim for indemnification in
respect thereof is to be made against any indemnifying party under this Section 9(k), deliver to the indemnifying party a written notice of the commencement thereof, and the indemnifying party shall have the right to participate in, and, to the
extent the indemnifying party so desires, jointly with any other indemnifying party similarly noticed, to assume control of the defense thereof with counsel mutually satisfactory to the indemnifying party and the Indemnitee; provided,
however, that an Indemnitee shall have the right to retain its own counsel with the fees and expenses of not more than one counsel for such Indemnitee to be paid by the indemnifying party, if, in the reasonable opinion of the Indemnitee, the
representation by such counsel of the Indemnitee and the indemnifying party would be inappropriate due to actual or potential differing interests between such Indemnitee and any other party represented by such counsel in such proceeding. Legal
counsel referred to in the immediately preceding sentence shall be selected by the Investors holding at least a majority of the Registrable Securities. The Indemnitee shall cooperate fully with the indemnifying party in connection with any
negotiation or defense of any such action or Indemnified Liabilities by the indemnifying party and shall furnish to the indemnifying party all information reasonably available to the Indemnitee that relates to such action or Indemnified Liabilities.
The indemnifying party shall keep the Indemnitee fully apprised at all times as to the status of the defense or any settlement negotiations with respect thereto. No indemnifying party shall be liable for any settlement of any action, claim or
proceeding effected without its prior written consent, provided, however, that the indemnifying party shall not unreasonably withhold, delay or condition its consent. No indemnifying party shall, without the prior written consent of
the Indemnitee, consent to entry of any judgment or enter into any settlement or other compromise which does not include as an unconditional term thereof the giving by the claimant or plaintiff to such Indemnitee of a release from all liability in
respect to such Indemnified Liabilities or litigation. Following indemnification as provided for hereunder, the indemnifying party shall be subrogated to all rights of the Indemnitee with respect to all third parties, firms or corporations relating
to the matter for which indemnification has been made. The failure to deliver written notice to the indemnifying party within a reasonable time of the commencement of any such action shall not relieve such indemnifying party of any liability to the
Indemnitee under this Section 9(k), except to the extent that the indemnifying party is prejudiced in its ability to defend such action. 

  
 53 








 (iii) The indemnification required by this Section 9(k) shall be made by periodic payments
of the amount thereof during the course of the investigation or defense, as and when bills are received or Indemnified Liabilities are incurred. 

(iv) The indemnity agreements contained herein shall be in addition to (x) any cause of action or similar right of the Indemnitee
against the indemnifying party or others, and (y) any liabilities the indemnifying party may be subject to pursuant to the law. 
 (v)
Notwithstanding the forgoing, under no circumstances shall the Company or its Subsidiaries, or their respective directors, officers, employees, consultants, agents or representatives, be responsible or liable for, and no Indemnitee shall be entitled
to seek any consequential damages. 
 (l) No Strict Construction. The language used in this Agreement will be deemed
to be the language chosen by the parties to express their mutual intent, and no rules of strict construction will be applied against any party. 

(m) Remedies. Each Buyer and each holder of the Securities shall have all rights and remedies set forth in the
Transaction Documents and all rights and remedies which such holders have been granted at any time under any other agreement or contract and all of the rights which such holders have under any law. Any Person having any rights under any provision of
this Agreement shall be entitled to enforce such rights specifically (without posting a bond or other security), to recover damages by reason of any breach of any provision of this Agreement and to exercise all other rights granted by law.
Furthermore, the Company recognizes that in the event that it fails to perform, observe, or discharge any or all of its obligations under the Transaction Documents, any remedy at law may prove to be inadequate relief to the Buyers. The Company
therefore agrees that the Buyers shall be entitled to seek temporary and permanent injunctive relief in any such case without the necessity of proving actual damages and without posting a bond or other security. 

(n) Rescission and Withdrawal Right. Notwithstanding anything to the contrary contained in (and without limiting any
similar provisions of) the Transaction Documents, whenever any Buyer exercises a right, election, demand or option under a Transaction Document and the Company does not timely perform its related obligations within the periods therein provided, then
such Buyer may rescind or withdraw, in its sole discretion from time to time upon written notice to the Company, any relevant notice, demand or election in whole or in part without prejudice to its future actions and rights. 

(o) Payment Set Aside. To the extent that the Company makes a payment or payments to the Buyers hereunder or pursuant to
any of the other Transaction Documents or the Buyers enforce or exercise their rights hereunder or thereunder, and such payment or payments or the proceeds of such enforcement or exercise or any part thereof are subsequently invalidated, declared to
be fraudulent or preferential, set aside, recovered from, disgorged by or are required to be refunded, repaid or otherwise restored to the Company, a trustee, receiver or 

  
 54 








 
any other Person under any law (including, without limitation, any bankruptcy law, foreign, state or federal law, common law or equitable cause of action), then to the extent of any such
restoration the obligation or part thereof originally intended to be satisfied shall be revived and continued in full force and effect as if such payment had not been made or such enforcement or setoff had not occurred. 

(p) Independent Nature of Buyers’ Obligations and Rights. The obligations of each Buyer under any Transaction
Document are several and not joint with the obligations of any other Buyer, and no Buyer shall be responsible in any way for the performance of the obligations of any other Buyer under any Transaction Document. Nothing contained herein or in any
other Transaction Document, and no action taken by any Buyer pursuant hereto or thereto, shall be deemed to constitute the Buyers as, and the Company acknowledges that the Buyers do not so constitute, a partnership, an association, a joint venture
or any other kind of entity, or create a presumption that the Buyers are in any way acting in concert or as a group, and the Company shall not assert any such claim with respect to such obligations or the transactions contemplated by the Transaction
Documents and the Company acknowledges, and each Buyer confirms, that the Buyers are not acting in concert or as a group with respect to such obligations or the transactions contemplated by the Transaction Documents. The Company acknowledges that it
has independently participated in the negotiation of the transaction contemplated hereby with the advice of its own counsel and advisors. Each Buyer shall be entitled to independently protect and enforce its rights, including, without limitation,
the rights arising out of this Agreement or out of any other Transaction Documents, and it shall not be necessary for any other Buyer to be joined as an additional party in any proceeding for such purpose. 

[Signature Page Follows] 

  
 55 








 IN WITNESS WHEREOF, each Buyer and the Company have caused their respective signature page
to this Securities Purchase Agreement to be duly executed as of the date first written above. 
  

					
	COMPANY:
	
	REAL GOODS SOLAR, INC.
		
	By:		  

			Name:		Dennis Lacey
			Title:		Chief Executive Officer



  
 [Signature Page to
Securities 
 Purchase Agreement] 








 IN WITNESS WHEREOF, each Buyer and the Company have caused their respective signature page
to this Securities Purchase Agreement to be duly executed as of the date first written above. 
  

			
	BUYERS:
	
	  

		
	By:		[Lead Investor]
		
	By:		  

			Name:
			Title:



  
 [Signature Page to
Securities 
 Purchase Agreement] 








 IN WITNESS WHEREOF, each Buyer and the Company have caused their respective signature page
to this Securities Purchase Agreement to be duly executed as of the date first written above. 
  

			
	BUYERS:
	
	  

		
	By:		[Other Buyer]
		
	By:		  

			Name:
			Title:



  
 [Signature Page to
Securities 
 Purchase Agreement] 








 SCHEDULE OF BUYERS 

 

																									
	(1)	 	(2)	 	(2a)	 	(3)	 	 	(4)	 	 	(5)	 	 	(6)	 	 	(7)	 
	 Buyer
	 	Address, E-mail,
Facsimile Number and
Telephone Number	 	Email and Telephone
Number for Offer
Notices	 	Number of
Common
Shares	 	 	Number of
Capacity
Shares	 	 	Number of
Warrant
Shares	 	 	Purchase
Price	 	 	Legal Representative’s
Address and Facsimile
Number	 
								
	 [Lead Investor]
	 		 		 	 	[    }	  	 	 	[    }	  	 	 	[    }	  	 	 	[    }	  	 	 	[    }	  
								
	 [Other Buyers]
	 		 		 	 	[    }	  	 	 	[    }	  	 	 	[    }	  	 	 	[    }	  	 	 	[    }	  








 EXHIBITS 
  

			
	Exhibit A		Form of Series F Warrant
	Exhibit B		Form of Securities Escrow Agreement
	Exhibit C		Form of Capacity Notice
	Exhibit D		Form of Secretary’s Certificate
	Exhibit E		Form of Officers Certificate

 SCHEDULES 
  

			
	Schedule I		List of General Use Free Writing Prospectus
	Schedule 3(c)		Significant Subsidiaries
	Schedule 3(f)		Equity Capitalization
	Schedule 3(n)		Absence of Litigation
	Schedule 3(ff)		Transactions with Affiliates
	Schedule 3(hh)		Listing; 1934 Act Registration








 EXHIBIT A 

CAPACITY NOTICE 
 TO BE
EXECUTED BY THE HOLDER TO RECEIVE CAPACITY SHARES 
 REAL GOODS SOLAR, INC. 

The undersigned holder hereby exercises the right to receive
                 of the shares of Class A Common Stock, par value $0.0001 per share (“Capacity Shares”) of Real Goods Solar, Inc., a Colorado
corporation (the “Company”) and hereby directs the Company to deliver to the undersigned such number of Capacity Shares, in each case, in accordance with the terms of that certain Securities Purchase Agreement dated as of
June 26, 2015, by and between the Company and the Buyers listed on the signature page attached thereto. 
  

			
	Date:                  ,         
	
	  

	Name of Registered Holder
		
	By:		  

			Name:
			Title:
	
	DWAC Instructions:
	
	  

	
	  

	
	  

	
	  









 ACKNOWLEDGMENT 

The Company hereby acknowledges this Capacity Notice and hereby directs Computershare Trust Company, N.A. to issue, deliver and transfer the
above indicated number of shares of Common Stock. 
  

			
	COMPUTERSHARE TRUST COMPANY, N.A.
		
	By:		  

	Name:		
	Title:		









 SCHEDULE I 

List of General Use Free Writing Prospectus 

None 







 SCHEDULE 3(c) 

Significant Subsidiaries 
 Elemental
Energy, LLC 
 Real Goods Energy Tech, Inc. 
 RGS Financing,
Inc. 
 Real Goods Solar, Inc. - Mercury Energy, Inc. 
 Real
Goods Solar, Inc. – Mercury Solar 
 Alteris Renewables, Inc. 

Sunetric Management, LLC 







 SCHEDULE 3(f)(ii) 

Equity Capitalization 
 Warrant to issued
203,704 shares of Class A Common Stock issued to Silicon Valley Bank dated November 19, 2014. 







 SCHEDULE 3(n) 

Absence of Litigation 
 The Company has
previously disclosed that it and certain officers and directors are parties to three consolidated lawsuits currently pending in the Southern District of New York arising out of the Company’s July 9, 2014 PIPE offering. The court
ordered the parties to participate in a settlement conference on June 22, 2015. As a result of the settlement conference, the Company and the officers and directors resolved in principal the claims asserted by certain of the
plaintiffs. The Company currently expects that its exposure will be capped at the retention of its Officers and Directors Insurance Policy ($500,000) and an adjustment in the strike price of the warrants issued in the PIPE offering. 

The Company recently received a letter from the owner of a large photovoltaic system built by the Company’s commercial division in 2012 is claiming that
the system has significant defects and proposing to conduct repairs estimated to cost of $1.7-$1.8 million. Based on the information currently available, the Company believes that the repairs proposed by the owner are excessive. The Company has
accrued a warranty liability of $330,000, which it believes is a more reasonable estimate of the cost of any remediation. The Company intends to aggressively pursue this matter to determine what, if any, repairs are needed to the system and how they
can be done in the most cost-effective manner. 







 SCHEDULE 3(ff) 

Transactions with Affiliates 
 Columbia
Acorn Fund is affiliated with Columbia Management Investment Distributors, Inc., member FINRA. 







 SCHEDULE 3(hh) 

Listing; 1934 Act Registration 
 On
April 14, 2015, the Company received a letter from NASDAQ notifying the Company that it is no longer in compliance with NASDAQ Listing Rule 5550(b)(2) because the minimum Market Value of Listed Securities (MVLS) of the Company’s
Class A common stock had fallen below $35 million for the 30 business day period between February 24, 2015 and April 13, 2015, and describing a timetable for bringing the Company into compliance with that rule. The Company disclosed
this notification on a Form 8-K filed on April 16, 2015.