Exhibit 31.1


                    CERTIFICATION OF CHIEF EXECUTIVE OFFICER

I, Eric D. Gadd, certify that:

          1.   I have reviewed this quarterly report on Form 10-Q for the three
               months ended June 30, 2003 of Zond-PanAero Windsystem Partners I;

          2.   Based on my knowledge, this quarterly 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 quarterly
               report;

          3.   Based on my knowledge, the financial statements, and other
               financial information included in this quarterly 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 quarterly 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-15e and
               15d-15(e)) for the registrant and we 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)   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

               c)   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
                    quarterly 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 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, 2004
                             /s/ ERIC D. GADD
                             ------------------------------
                             Eric D. Gadd
                             Chief Executive Officer
                             Zond Windsystems Management LLC, as General
                             Partner of Zond-PanAero Windsystem Partners I



                                       2
<PAGE>