Exhibit 32.1
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                    CERTIFICATION OF CHIEF EXECUTIVE OFFICER

                       PURSUANT TO 18 U.S.C. SECTION 1350,
                             AS ADOPTED PURSUANT TO
                  SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002


In connection with the Quarterly Report of Zond-PanAero Windsystem Partners I, a
California Limited Partnership (the "Partnership") on Form 10-Q for the three
months ended March 31, 2006 as filed with the Securities and Exchange Commission
on the date hereof (the "Report"), I, Jesse E. Neyman, Chief Executive Officer
of Zond Windsystems Management LLC, as General Partner of the Partnership,
certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906
of the Sarbanes-Oxley Act of 2002, to the best of my knowledge and belief, that:

     (1) The Report fully complies with the requirements of Section 13(a) or
         15(d) of the Securities Exchange Act of 1934; and

     (2) The information contained in the Report fairly presents, in all
         material respects, the financial condition and results of operations of
         the Partnership for the three months ended March 31, 2006.


Date: May 12, 2006
                                        /s/ JESSE E. NEYMAN
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                                        Jesse E. Neyman
                                        Chief Executive Officer
                                        Zond Windsystems Management LLC, as
                                        General Partner of Zond-PanAero
                                        Windsystem Partners I, a California
                                        Limited Partnership