EXHIBIT 10(aaa)





Confidential Treatment Requested as to certain information contained in this Exhibit and filed separately with the Securities and Exchange Commission.





AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT                           Page 1 of 1 Pages





1.CONTRACT ID CODE





2.AMENDMENT MODIFICATION NO.


MOD06





3.EFFECTIVE DATE


10/01/10





4.REQUISITION/PURCHASE REQ. NO.





5.PROJECT NO. (if applicable)





6.ISSUED BYCODE


FEDERAL PRISON INDUSTRIES, UNICOR


400 FIRST STREET, N.W.


WASHINGTON, DC  20534


ATTN:  Staci Card, Contract Specialist





7.ADMINISTERED BY (if other than Item 6)CODE


SEE BLOCK 6.





8.NAME AND ADDRESS OF CONTRACTOR (No., street, country, State and Zip Code)


Spire Corporation


One Patriots Park


Bedford, MA  01730


ATTN:  ***





CODEFACILITY CODE





9A.AMENDMENT OF SOLICITATION NO.


[X]





9B.DATED (SEE ITEM 11)





10A.MODIFICATION OF CONTRACT/ORDER NO.


DJU4600003478





10B.DATED (SEE ITEM 13)


11/28/08





11.THIS ITEM ONLY APPLIES TO AMENDMENT OF SOLICITATIONS





This above numbered solicitation is amended as set forth in Item 14.  The hour and the date specified for receipt of Offers [  ] is extended, [X] is not extended.







Offers must acknowledge receipt of this amendment prior to the hour and date specified in the solicitation or as amended, by one of the following methods: (a) By completing Items 8 and 15, and returning       copies of the amendment; (b) By acknowledging receipt of this amendment on each copy of the offer submitted; or (c) By separate letter or telegram which includes a reference to the solicitation and amendment number, FAILURE OF YOUR ACKNOWLEDGEMENT TO BE RECEIVED AT THE PLACE DESIGNATED FOR THE RECEIPT OF OFFERS PRIOR TO THE HOUR AND DATE SPECIFIED MAY RESULT IN REJECTION OF YOUR OFFER.  If by virtue of this amendment you desire to change an offer already submitted, such change may be made by telegram or letter, provided each telegram or letter makes reference to the solicitation and this amendment, and is received prior to the opening hour and date specified.





12.ACCOUNTING AND APPROPRIATION DATA (if required)





13.THIS ITEM APPLIES ONLY TO MODIFICATIONS OF CONTRACTS/ORDERS, IT MODIFIES THE CONTRACT/ORDER NO. AS DESCRIBED IN ITEM 14.





[x]A.THIS CHANGE ORDER IS ISSUED PURSUANT TO: (Specify authority) THE CHANGES SET FORTH IN ITEM 14 ARE MADE IN THE CONTRACT ORDER NO. IN ITEM 10A.





[  ]B.THE ABOVE NUMBERED CONTRACT/ORDER IS MODIFIED TO REFLECT THE ADMINISTRATIVE CHANGES (such as changes in paying office, Appropriation date, etc.) SET FORTH IN ITEM 14, PURSUANT TO THE AUTHORITY OF FAR 43.103 (b).





[  ]C.THIS SUPPLEMENTAL AGREEMENT IS ENTERED INTO PURSUANT TO AUTHORITY OF:





[X]D.OTHER (Specify type of modification and authority)





E.IMPORTANT:  Contractor [  ] is not, [X] is required to sign this document and return 1 copies to the issuing office.





14.DESCRIPTION OF AMENDMENT/MODIFICATION (Organized by UCF section headings, including solicitation/contract subject matter where feasible.)





The contract identified in block 10a is hereby modified as follows:





1.
This modification voids Line #5 of modification 004 stating that the option year is a Requirements type option.


2.
This contact is changed from a definite quantity to an Indefinite delivery, indefinite quantity contact.  The guaranteed minimum starting on October 1, 2010 is ***.  The guaranteed minimum will be delivered as follows:  OCT-***, NOV-***, DEC-***, JAN ***, FEB- ***, MAR- ***.  The price will be *** per watt.  The value for the guaranteed minimum is $11,985,000.00.


3.
The remaining advance payment as of September 30, 2010 is valued at ***.  This advance will be liquidated in October for ***, November for *** and December for ***.


4.
The IDIQ contract will be in place until December 31, 2011.  Delivery orders will be issued 90 days in advance for any quantity required above the guaranteed minimum buy.





As provided, all other terms and conditions remain unchanged.





15A.NAME AND TITLE OF SIGNER (Type or print)


Michael W. O’Dougherty, Manager of Contracts





15B.CONTRACTOR/OFFEROR           15C.DATE SIGNED


/s/ Michael W. O’Dougherty            10/12/10


-----------------------------------------------------


(Signature of the person authorized to sign)








16A.NAME AND TITLE OF CONTRACTING OFFICER (Type or print)


Staci Card, Contract Specialist





16B.UNITED STATES OF AMERICA     16C.DATE SIGNED


BY/s/ Staci Card                       10/13/10


---------------------------------------------------


(Signature of contracting officer)





NSN 7540-01-152-807030-105STANDARD FORM 30 (REV. 10-83)


PREVIOUS EDITION UNUSABLE  Prescribed by GSA


FAR(48 CFR) 53.243








*** Represents text omitted pursuant to a request for confidential treatment.  The omitted material has been filed separately with the Securities and Exchange Commission.