Exhibit
10.72    February 16, 2010  Tower
Tech Systems, Inc. 101
S. 16thStreet P.O.Box
1957 Manitowoc,
Wl 54221-1957  Broadwind
Energy, Inc. 101
S. 16thStreet P.O.Box
1957 Manitowoc,
WI 54221-1957  Re: Great Western
Bank Loan to Tower Tech Systems, Inc.  Gentlemen:  Reference is made to that
certain Letter Agreement dated April 28, 2009 entered into by and among
Great Western Bank as lender, Tower Tech Systems, Inc. as borrower, and
Broadwind Energy, Inc. as guarantor, as modified by the Change in Terms
Agreement dated December 22, 2009 executed by such parties (collectively, the
Letter Agreement), a copy of which is attached hereto as Exhibit A
and is incorporated herein by this reference. Any capitalized terms not defined
in this Change in Terms Agreement shall have the meanings ascribed to such
terms in the Letter Agreement.  The Parties acknowledge and
agree that the Letter Agreement, as modified, provides, among other things, that:
(i) Tower Tech Systems, Inc, may convert up to $6,500,000 of the
outstanding balance of the Loan to a term loan, at its sole option, upon
written notice (the Conversion Notice) to Lender given prior to March 5,
2010, provided Borrower is not in default under the Note or any of the other
Loan Documents; and (ii) that such Conversion Notice shall specify the
date on which such conversion shall be effective, which date shall be no later
than March 1, 2010.  Each of Great Western Bank, Tower Tech Systems, Inc.
and Broadwind Energy, Inc. hereby acknowledge and agree that the Letter
Agreement shall be amended such that: (i) Tower Tech Systems, Inc. may
convert up to $6,500,000 of the outstanding balance of the Loan to a term loan,
at its sole option, upon delivery of a Conversion Notice to Lender given prior
to April 5, 2010, provided Borrower is not in default under the Note or
any of the other Loan Documents; and (ii) that such Conversion Notice
shall specify the date on which such conversion shall be effective, which date
shall be no later than April 5, 2010. All other terms and conditions set
forth in the Letter Agreement, including, without limitation, any conditions
relating to the conversion of all or a portion of the Loan, shall remain in
full force and effect, except as specifically modified pursuant to this Change in
Terms Agreement.  If you are in agreement with
the terms and provisions of this Letter Amendment, please signify your
acceptance and agreement to be bound by such terms and provisions, by signing
where indicated below and returning afully
executed counterpart of this Letter  www.greatwesternbank.com


Amendment to me at the address set forth above. Great
Western Banks obligation to abide by the terms of this Letter Agreement is
contingent upon its receipt of a signed copy of this Letter Agreement from each
of Tower Tech Systems, Inc. and Broadwind Energy, Inc. on or before February 19,
2010.  GREAT
  WESTERN BANK/s/ Gerald KrugerGerald KrugerSr. Vice PresidentAcknowledged and agreed
  to this 16 day of February, 2010.TOWER TECH SYSTEMS,
  INC./s/ Michael L. SalutzBy:
  Michael L. SalutzIts:
  Group ControllerAcknowledged and agreed
  to this 16 day of February, 2010.BROADWIND ENERGY, INC./s/ S.K. KushnerBy:
  S.K. KushnerIts:
  CFO