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 Annual Report of Zond Windsystem Partners, Ltd. Series
85-C (the "Partnership") on Form 10-K for the year ended December 31, 2005 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 V 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.


Date: July 12, 2006
                                              /s/ JESSE E. NEYMAN
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                                              Jesse E. Neyman
                                              Chief Executive Officer
                                              Zond Windsystems Management V LLC,
                                              as General Partner of
                                              Zond Windsystem Partners, Ltd.
                                              Series 85-C