Document:

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                                                                    Exhibit 4.1

                      [FORM OF FACE OF CERTIFICATE]

              Organized Under the Laws of the State of South Dakota

                                                           CLASS A CAPITAL UNITS
A-

                          GREAT PLAINS ETHANOL, LLC

 THIS CERTIFIES THAT__________________________________________ IS THE OWNER AND
 REGISTERED HOLDER OF_____________________________________________ CLASS A
 CAPITAL UNITS

                          in Great Plains Ethanol, LLC

TRANSFERABLE ONLY ON THE BOOKS OF THE LIMITED LIABILITY COMPANY BY THE HOLDER
HEREOF IN PERSON OR BY DULY AUTHORIZED ATTORNEY UPON SURRENDER OF THIS
CERTIFICATE PROPERLY ENDORSED.

              IN WITNESS WHEREOF, THE SAID LIMITED LIABILITY COMPANY HAS CAUSED
              THIS CERTIFICATE TO BE SIGNED BY ITS DULY AUTHORIZED OFFICERS THIS
                     DAY OF          , 200__.

   _________________                                      _________________
       SECRETARY                                              PRESIDENT

<PAGE>

                        [FORM OF REVERSE OF CERTIFICATE]

             The sale and transfer of the Capital Units represented
             by this Certificate are restricted by, and subject to,
               the provisions of the Operating Agreement of Great
             Plains Ethanol, LLC. The Operating Agreement provides,
             among other things, that no sale, assignment, transfer,
              gift, exchange or other disposition of these Capital
              Units is valid except as specifically provided for in
                the Operating Agreement. Copies of the Operating
             Agreement and instructions for transfer, sale or other
              disposition of these Capital Units are available for
                  inspection at the Company's principal office.

             Any holder of the Class A Capital Units represented by
              this Certificate has an annual obligation to deliver
             corn to Great Plains Ethanol, LLC, under the terms of a
              Corn Delivery Agreement, a copy of which is available
                for inspection at the Company's principal office.

FOR VALUE RECEIVED __________ HEREBY SELL, ASSIGN AND TRANSFER UNTO
____________________________________________________________________
____________________________________________________ CAPITAL UNITS REPRESENTED
BY THE WITHIN CERTIFICATE, AND DO HEREBY IRREVOCABLY CONSTITUTE AND APPOINT
____________________________________________________ ATTORNEY TO TRANSFER THE
SAID CAPITAL UNITS ON THE BOOKS OF THE WITHIN NAMED LIMITED LIABILITY COMPANY
WITH FULL POWER OF SUBSTITUTION IN THE PREMISES.
DATED         ____________________, 20_____ __________________

IN PRESENCE OF ___________________________________________________

NOTICE: THE SIGNATURE TO THIS ASSIGNMENT MUST CORRESPOND WITH THE NAME AS
WRITTEN UPON THE FACE OF THIS CERTIFICATE IN EVERY PARTICULAR, WITHOUT
ALTERATION OR ENLARGEMENT OR ANY CHANGE WHATEVER.<PAGE>

                                                                    Exhibit 4.2

                         [FORM OF FACE OF CERTIFICATE]

              Organized Under the Laws of the State of South Dakota

                                                         CLASS B CAPITAL UNITS
B-

                            GREAT PLAINS ETHANOL, LLC

 THIS CERTIFIES THAT__________________________________________ IS THE OWNER AND
 REGISTERED HOLDER OF_____________________________________________ CLASS B
 CAPITAL UNITS

                          in Great Plains Ethanol, LLC

TRANSFERABLE ONLY ON THE BOOKS OF THE LIMITED LIABILITY COMPANY BY THE HOLDER
HEREOF IN PERSON OR BY DULY AUTHORIZED ATTORNEY UPON SURRENDER OF THIS
CERTIFICATE PROPERLY ENDORSED.

              IN WITNESS WHEREOF, THE SAID LIMITED LIABILITY COMPANY HAS CAUSED
              THIS CERTIFICATE TO BE SIGNED BY ITS DULY AUTHORIZED OFFICERS THIS
                    DAY OF           , 200__.

  _________________                                          _________________
      SECRETARY                                                  PRESIDENT

<PAGE>

                        [FORM OF REVERSE OF CERTIFICATE]

             The sale and transfer of the Capital Units represented
             by this Certificate are restricted by, and subject to,
               the provisions of the Operating Agreement of Great
             Plains Ethanol, LLC. The Operating Agreement provides,
             among other things, that no sale, assignment, transfer,
              gift, exchange or other disposition of these Capital
              Units is valid except as specifically provided for in
                the Operating Agreement. Copies of the Operating
             Agreement and instructions for transfer, sale or other
              disposition of these Capital Units are available for
                  inspection at the Company's principal office.

FOR VALUE RECEIVED __________ HEREBY SELL, ASSIGN AND TRANSFER UNTO
___________________________________________________________________
____________________________________________________ CAPITAL UNITS REPRESENTED
BY THE WITHIN CERTIFICATE, AND DO HEREBY IRREVOCABLY CONSTITUTE AND APPOINT
____________________________________________________ ATTORNEY TO TRANSFER THE
SAID CAPITAL UNITS ON THE BOOKS OF THE WITHIN NAMED LIMITED LIABILITY COMPANY
WITH FULL POWER OF SUBSTITUTION IN THE PREMISES.
DATED         ____________________, 20_____ __________________

IN PRESENCE OF ___________________________________________________

NOTICE: THE SIGNATURE TO THIS ASSIGNMENT MUST CORRESPOND WITH THE NAME AS
WRITTEN UPON THE FACE OF THIS CERTIFICATE IN EVERY PARTICULAR, WITHOUT
ALTERATION OR ENLARGEMENT OR ANY CHANGE WHATEVER.<PAGE>

                                                                    Exhibit 4.3

                          [FORM OF FACE OF CERTIFICATE]

              Organized Under the Laws of the State of South Dakota

                                                           CLASS C CAPITAL UNITS
C-

                            GREAT PLAINS ETHANOL, LLC

 THIS CERTIFIES THAT__________________________________________ IS THE OWNER AND
 REGISTERED HOLDER OF_____________________________________________ CLASS C
 CAPITAL UNITS

                          in Great Plains Ethanol, LLC

 TRANSFERABLE ONLY ON THE BOOKS OF THE LIMITED LIABILITY COMPANY BY THE HOLDER
 HEREOF IN PERSON OR BY DULY AUTHORIZED ATTORNEY UPON SURRENDER OF THIS
 CERTIFICATE PROPERLY ENDORSED.

        IN WITNESS WHEREOF, THE SAID LIMITED LIABILITY COMPANY HAS CAUSED
       THIS CERTIFICATE TO BE SIGNED BY ITS DULY AUTHORIZED OFFICERS THIS
                            DAY OF           , 200__.

 _________________                                         _________________
     SECRETARY                                                 PRESIDENT

<PAGE>

                        [FORM OF REVERSE OF CERTIFICATE]

             The sale and transfer of the Capital Units represented
             by this Certificate are restricted by, and subject to,
               the provisions of the Operating Agreement of Great
             Plains Ethanol, LLC. The Operating Agreement provides,
             among other things, that no sale, assignment, transfer,
              gift, exchange or other disposition of these Capital
              Units is valid except as specifically provided for in
                the Operating Agreement. Copies of the Operating
             Agreement and instructions for transfer, sale or other
              disposition of these Capital Units are available for
                  inspection at the Company's principal office.

FOR VALUE RECEIVED __________ HEREBY SELL, ASSIGN AND TRANSFER UNTO
____________________________________________________________________
_____________________________________________________ CAPITAL UNITS REPRESENTED
BY THE WITHIN CERTIFICATE, AND DO HEREBY IRREVOCABLY CONSTITUTE AND APPOINT
____________________________________________________ ATTORNEY TO TRANSFER THE
SAID CAPITAL UNITS ON THE BOOKS OF THE WITHIN NAMED LIMITED LIABILITY COMPANY
WITH FULL POWER OF SUBSTITUTION IN THE PREMISES.
DATED         ____________________, 20_____ __________________

IN PRESENCE OF ___________________________________________________

NOTICE: THE SIGNATURE TO THIS ASSIGNMENT MUST CORRESPOND WITH THE NAME AS
WRITTEN UPON THE FACE OF THIS CERTIFICATE IN EVERY PARTICULAR, WITHOUT
ALTERATION OR ENLARGEMENT OR ANY CHANGE WHATEVER.<PAGE>

                                                                   Exhibit 4.4

                          [FORM OF FACE OF CERTIFICATE]

              Organized Under the Laws of the State of South Dakota

                                                           CLASS D CAPITAL UNITS
D-

                            GREAT PLAINS ETHANOL, LLC

 THIS CERTIFIES THAT__________________________________________ IS THE OWNER AND
 REGISTERED HOLDER OF_____________________________________________ CLASS D
 CAPITAL UNITS

                          in Great Plains Ethanol, LLC

 TRANSFERABLE ONLY ON THE BOOKS OF THE LIMITED LIABILITY COMPANY BY THE HOLDER
 HEREOF IN PERSON OR BY DULY AUTHORIZED ATTORNEY UPON SURRENDER OF THIS
 CERTIFICATE PROPERLY ENDORSED.

        IN WITNESS WHEREOF, THE SAID LIMITED LIABILITY COMPANY HAS CAUSED
       THIS CERTIFICATE TO BE SIGNED BY ITS DULY AUTHORIZED OFFICERS THIS
                            DAY OF           , 200__.

  _________________                                         _________________
      SECRETARY                                                 PRESIDENT

<PAGE>

                        [FORM OF REVERSE OF CERTIFICATE]

             The Capital Units represented by this Certificate have
            not been registered under the Securities Act of 1933, as
               amended. The sale and transfer of the Capital Units
             represented by this Certificate are restricted by, and
            subject to, the provisions of the Operating Agreement of
               Great Plains Ethanol, LLC. The Operating Agreement
             provides, among other things, that no sale, assignment,
             transfer, gift, exchange or other disposition of these
             Capital Units is valid except as specifically provided
             for in the Operating Agreement. Copies of the Operating
             Agreement and instructions for transfer, sale or other
              disposition of these Capital Units are available for
                  inspection at the Company's principal office.

FOR VALUE RECEIVED __________ HEREBY SELL, ASSIGN AND TRANSFER UNTO
___________________________________________________________________
_____________________________________________________ CAPITAL UNITS REPRESENTED
BY THE WITHIN CERTIFICATE, AND DO HEREBY IRREVOCABLY CONSTITUTE AND APPOINT
____________________________________________________ ATTORNEY TO TRANSFER THE
SAID CAPITAL UNITS ON THE BOOKS OF THE WITHIN NAMED LIMITED LIABILITY COMPANY
WITH FULL POWER OF SUBSTITUTION IN THE PREMISES.
DATED         ____________________, 20_____ __________________

IN PRESENCE OF ___________________________________________________

NOTICE: THE SIGNATURE TO THIS ASSIGNMENT MUST CORRESPOND WITH THE NAME AS
WRITTEN UPON THE FACE OF THIS CERTIFICATE IN EVERY PARTICULAR, WITHOUT
ALTERATION OR ENLARGEMENT OR ANY CHANGE WHATEVER.

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