EXHIBIT
      31.2
    CERTIFICATION
      OF PRINCIPAL FINANCIAL OFFICER
    PURSUANT
      TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002
     
    I,
      John
      T. Miller, certify that:
    
    1.  I
      have reviewed this
      Quarterly Report on Form 10-Q of Pacific Ethanol, Inc.;
    
    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 officer 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; and
    
    (d)  Disclosed
      in this report
      any change in the registrant’s internal control over financial reporting that
      occurred during the registrant’s most recent fiscal quarter (the registrant’s
      fourth fiscal quarter in the case of an annual report) 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 officer(s) 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 control over financial reporting.
     
    
      
          
            | Date:
              May 10, 2007  | 
            /S/
              JOHN T. MILLER  | 
          
          
            |   | 
            
               John T. Miller  
                
              Chief Operating Officer and Acting Chief Financial
                Officer 
              
                (Principal
                  Financial Officer) 
               
             |