Document:

EXHIBIT
      10.30

    

    EXTENSION
      AGREEMENT

     

    
      	272102	 	
              Date:
                2-16-08

            

    

         

    By
      mutual
      agreement, the attached Note No. 272102
      (the
      "Note") is hereby changed and/or extended as follows:

    

    1.
      The
      remaining balance of payments in the amount of $97,986.02,
      originally due on or before 2-16-08,
      are now
      due on 08-16-2008.

    

    2.
      The
      unpaid principal balance shall continue to bear interest until paid in full.
      The
      interest rate x
      will
      remain the same; or  ̈
      is
      hereby changed to _________________% per annum from and after the date of the
      Agreement. (mark one)

    

    3.
      ADDITIONAL TERMS Allow
      time to get plant built

    

    4.
      This
      Extension Agreement does not in any way satisfy or cancel the Note. Except
      as
      specifically amended hereby, all other terms of the Note remain in full force
      and effect. Any security interest or lien granted by the Debtor(s) in any real
      or personal property which secures Debtor(s) obligation under the terms of
      the
      Note shall remain in full force and effect and shall secure the obligations
      of
      the Debtor(s) under the terms of the Note as amended by this Extension
      Agreement.

     

    
      
        	
                AMERICAN STATE BANK

                OSCEOLA, IOWA 50213

                LAMONI, IOWA 50140

              	 	
                
                  Southern
                    Iowa BioEnergy, LLC

                  BY
                    SIGNING BELOW, YOU AGREE TO THE TERMS OF 

                  AND
                    ACKNOWLEDGE RECEIPT OF A COPY OF THIS

                  EXTENSION
                    AGREEMENT

                

              
	 	 	 	 	 	 	 
	
                By  /s/
                  Kevin W. Klemesrud

                
                  

                

              	 	 	 	 	 	 
	 	 	
                /s/ Bill Higdon

                
                  

                

                
                  Debtor

                

              	 	 /s/
                Leon Kessel 
                

              	 	/s/
                William Morain 
                

              
	 	 	 	 	 	 	 
	 	 	/s/ Alan Elefson 
                

                Co-Debtor

              	 	/s/ Jack Cooley 
                

              	 	/s/ J. R. Cornett 
                

              

      

    

    
       

      
        
        

      

      
        
        

        
          

        

      

      
        
        

      

    

     

    EXTENSION
      AGREEMENT

     

    
      	272102	 	
              Date:
                2-16-08

            

    

     

    By
      mutual
      agreement, the attached Note No. 272982
      (the
      "Note") is hereby changed and/or extended as follows:

    

    1.
      The
      remaining balance of payments in the amount of $50,040.00,
      originally due on or before 2-16-08,
      are now
      due on 08-16-2008.

    

    2.
      The
      unpaid principal balance shall continue to bear interest until paid in full.
      The
      interest rate x
      will
      remain the same; or  ̈
      is
      hereby changed to _________________% per annum from and after the date of the
      Agreement. (mark one)

    

    3.
      ADDITIONAL TERMS Allow
      time to get plant built 

     

    4.
      This
      Extension Agreement does not in any way satisfy or cancel the Note. Except
      as
      specifically amended hereby, all other terms of the Note remain in full force
      and effect. Any security interest or lien granted by the Debtor(s) in any real
      or personal property which secures Debtor(s) obligation under the terms of
      the
      Note shall remain in full force and effect and shall secure the obligations
      of
      the Debtor(s) under the terms of the Note as amended by this Extension
      Agreement.

     

    
      	
              AMERICAN STATE BANK

              OSCEOLA, IOWA 50213

              LAMONI, IOWA 50140

            	 	
              
                Southern
                  Iowa BioEnergy, LLC

                BY
                  SIGNING BELOW, YOU AGREE TO THE TERMS OF 

                AND
                  ACKNOWLEDGE RECEIPT OF A COPY OF THIS

                EXTENSION
                  AGREEMENT

              

            
	 	 	 	 	 	 	 
	
              By  /s/
                Kevin W. Klemesrud

              
                

              

            	 	 	 	 	 	 
	 	 	/s/
              Bill
              Higdon 
              

              Debtor

            	 	/s/
              Leon
              Kessel 
              

            	 	/s/
              William Morain 
              

            
	 	 	 	 	 	 	 
	 	 	/s/ Alan Elefson 
              

              Co-Debtor

            	 	/s/ Jack Cooley 
              

            	 	/s/ J. R. CornettEXHIBIT
        10.31 

       

      CHANGE
        IN TERMS AGREEMENT

      

      
        	
                Principal

                $2,2000,000.00

              	 	
                Loan
                  Date

                07-17-2006

              	 	
                Maturity

                10-17-2006

              	 	
                Loan
                  No.

                108002938

              	 	
                Call/Coll

                1E2/150

              	 	
                Account

              	 	
                Officer

                TLG

              	 	
                Initials

              
	
                References
                  in the shaded area are for Lender's use only and do not limit the
                  applicability of this document to any particular loan or
                  item.

                Any
                  item above containing "***" has been omitted due to text length
                  limitations.

              

      

       

      
        	Borrower:	
                Southern
                  Iowa BioEnergy LLC

                
                  115
                    So Linden

                  
                    Lamoni,
                      IA 50140

                  

                

              	 	Lender:	
                Great
                  Western Bank

                Leon

                111
                  N. Main

                PO
                  Box 171

                Leon,
                  IA 50144

              

      

      
      

       

      
        

        

      

      
        	
                Principal
                  Amount: $2,200,000.00

              	
                Interest
                  Rate: 10.240%

              	
                Date
                  of Agreement: February 19,
                  2008

              

      

      

      DESCRIPTION
        OFEXISTING INDEBTEDNESS. Promissory
        note from Southern Iowa BioEnergy LLC to Great Western Bank dated 7-17-2006
        in
        the amount of $2,200,000.00 with a current balance of $617,000.91.

      

      DESCRIPTION
        OF COLLATERAL.
        ALL
        COLLATERAL INCLUDING BUT NOT LIMITED TO: Real Estate Mortgage dated 6-12-2006
        and Security Agreement dated 6-12-2006 siting the assignment of Pre-Construction
        Services Agreement and Personal Guaranties from Leon G. Kessel, James R.
        Cornett, Jack Cooley, William Douglas Morain and William T. Higdon dated
        6-12-2006.

      

      DESCRIPTION
        OF CHANGE IN TERMS. Extended
        the maturity date of the loan to 5-17-2008. Change the interest rate of the
        loan
        to 8.74% fixed until maturity. 

      

      CONTINUING
        VALIDITY.
        Except
        as expressly changed by this Agreement, the terms of the original obligation
        or
        obligations, including all agreements evidenced or securing the obligation(s),
        remain unchanged and in full force and effect. Consent by Lender to this
        Agreement does not waive Lender’s right to strict performance of the
        obligation(s) as changed, nor obligate Lender to make any future change in
        terms. Nothing in this Agreement will constitutes a satisfaction of the
        obligation(s). It is the intention of Lender to retain as liable parties
        all
        makers and endorsers of the original obligation(s), including accommodation
        parties, unless a party expressly released by Lender in writing. Any maker
        or
        endorser, including accommodation makers, will not be released by virtue
        of this
        Agreement. If any person who signed the original obligation does not sign
        this
        Agreement below, then all persons signing below acknowledge that this Agreement
        is given conditionally, based on the representation to Lender the non-signing
        party consents to the changes and provisions of this Agreement or otherwise
        will
        not be released by it. This waiver applies not only to any initial extension,
        modification or release, but also to all such subsequent actions.

      

      PRIOR
        TO SIGNING THIS AGREEMENT, BORROWER READ AND UNDERSTOOD ALL THE PROVISIONS
        OF
        THIS AGREEMENT. BORROWER AGREES TO THE TERMS OF THIS
        AGREEMENT.

      

      BORROWER
        ACKNOWLEDGES RECEIPT OF A COMPLETED COPY OF THIS CHANGE IN TERMS AGREEMENT
        AND
        ALL OTHER DOCUMENTS RELATING TO THIS DEBT.

       

      
        	BORROWER:	 	 	 
	 	 	 	 
	SOUTHERN IOWA BIOENERGY
                LLC	 	 	 
	 	 	 	 
	 	 	 	 
	By:  /s/ William T. Higdon	 	 	By:  /s/ Alan Elefson
	
                
                  

                

                William
                  T. Higdon, President of 

                Southern
                  Iowa BioEnergy LLC

              	 	 	
                
                  

                

                Alan
                  Elefson, Treasurer of Southern Iowa 

                BioEnergy
                  LLC

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