Exhibit 31.2
 CERTIFICATION PURSUANT TO 17 CFR 240.13(a)-14(a)
(SECTION 302 CERTIFICATION)
 
 1.
    
    I have reviewed this quarterly report on Form 10-Q of Western Iowa 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-15(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;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; andd)
    
    Disclosed in this report any change in the registrants internal
control over financial reporting that occurred during the registrants
first fiscal quarter that has materially affected, or is reasonably likely to
materially affect, the registrants internal control over financial
reporting; and
 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; andb)
    
    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:      May 15, 2008
    /s/ Denny MauserDenny Mauser, Treasurer and Director(Principal Financial and Accounting Officer)