EXHIBIT
      10.7
     
    October
      17, 2006
     
    Front
      Range Energy, LLC 
    31375
      Great Western Drive
    Windsor,
      CO 80550
    
    Re:
      Amendment to Amended and Restated Ethanol Purchase and Sale
      Agreement
     
    Ladies
      and Gentlemen:
    
    Reference
      is hereby made to the Amended and Restated Ethanol Purchase and Sale
      Agreement (the“Agreement"), dated
      as
      of August 9, 2006, between Front Range
      Energy,
      LLC, a Colorado limited liability company (the "Company"), and
      Kinergy Marketing, LLC, an Oregon limited liability company.
    
    For
      good
      and valuable consideration, the receipt of which is hereby acknowledged,
      the undersigned hereby agrees that Section 4.1 of the Agreement
      shall
      be
      amended and restated in its entirety as follows:
    
    "Term.
      This
      Amended Agreement shall be effective on the date
      hereof and unless earlier terminated in accordance with
      its
      terms, shall continue in effect until May 31, 2013; provided,
      that the
      term of this Amended Agreement shall automatically renew and
      be
      extended for additional one-year periods thereafter unless a Party elects to
      terminate this Amended Agreement in a writing delivered to the other Party
      at
      least 60 days prior to the end of the original or renewal term."
    
    Except
      as
      expressly set forth herein, the Agreement shall remain unchanged and
      in full
      force and effect.
    
    This
      agreement shall be governed by and construed in accordance
      with the laws of
      the
      State of California. This agreement may be executed in two or more counterparts,
      each of which shall constitute an original but all of which when taken together
      shall constitute one agreement.
     
    Very
      truly yours,
    
    KNERGY
      MARKETING,
      LLC
    
    
    By: 
      /s/
      Neil
      M. Koehler                                        
      
    Name:
      Neil M. Koehler
    Title:
      President
     
    Accepted
      and agreed to
    as
      of the
      date first above written:
    
    FRONT
      RANGE ENERGY, LLC
    
    
    By: 
      /s/
      Daniel A.
      Sanders                               
    Name.
      Daniel A. Sanders
    Title:
      Manager