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**Exhibit 31.2**
                CERTIFICATION PURSUANT TO 17 CFR 240.13(A)-14(A)
                           (SECTION 302 CERTIFICATION)

     I, Cindy Patterson, certify that:

     1. I have reviewed  this  quarterly  report on Form 10-Q of Southwest  Iowa
Renewable Energy, LLC;

     2. Based on my knowledge, this report does not contain any untrue statement
of a  material  fact or omit to  state a  material  fact  necessary  to make the
statements made, in light of the circumstances  under which such statements were
made, not misleading with respect to the period covered by this report;

     3. Based on my knowledge,  the financial  statements,  and other  financial
information included in this report, fairly present in all material respects the
financial  condition,  results of operations and cash flows of the registrant as
of, and for, the periods presented in this report;

     4. The  registrant's  other  certifying  officers and I are responsible for
establishing and maintaining  disclosure  controls and procedures (as defined in
Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal  control over financial
reporting  (as  defined in  Exchange  Act Rules  13a-15(f)  and  15d-(f) for the
registrant, and have:

          (a) Designed such  disclosure  controls and  procedures or caused such
     disclosure controls and procedures to be designed under our supervision, to
     ensure that material information relating to the registrant,  including its
     consolidated  subsidiaries,  is made  known to us by  others  within  those
     entities,  particularly  during the  period in which  this  report is being
     prepared;

          (b) Designed such internal control over financial reporting, or caused
     such internal  control over  financial  reporting to be designed  under our
     supervision,  to provide reasonable  assurance regarding the reliability of
     financial  reporting  and  the  preparation  of  financial  statements  for
     external  purposes  in  accordance  with  generally   accepted   accounting
     principles; and

          (c)  Evaluated  the  effectiveness  of  the  registrant's   disclosure
     controls and procedures and presented in this report our conclusions  about
     the effectiveness of the disclosure controls and procedures,  as of the end
     of the period covered by this report based on such evaluation; and

          (d) Disclosed in this report any changes in the registrant's  internal
     control over financial reporting that occurred during the registrant's most
     recent fiscal quarter that has materially affected, or is reasonably likely
     to materially  affect,  the  registrant's  internal  control over financial
     reporting.

     5. The registrant's other certifying  officers and I have disclosed,  based
on our most recent evaluation of internal control over financial  reporting,  to
the registrant's  auditors and the audit committee of the registrant's  board of
directors (or persons performing the equivalent functions):

          (a) All significant deficiencies and material weaknesses in the design
     or  operation  of  internal  control  over  financial  reporting  which are
     reasonably  likely to adversely affect the registrant's  ability to record,
     process, summarize and report financial information; and

          (b) Any fraud,  whether or not material,  that involves  management or
     other employees who have a significant  role in the  registrant's  internal
     controls over financial reporting.

Date: February 17, 2009                 /s/ Cindy Patterson
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                                        Cindy Patterson, Chief Financial Officer
                                          (Principal Financial Officer)
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