Exhibit 10.9(d)
                                                                 ---------------


                                 AMENDMENT NO. 3

                                     TO THE

                             POWER PURCHASE CONTRACT

                                     BETWEEN

                       SOUTHERN CALIFORNIA EDISON COMPANY

                                       AND

                   ZOND WIND SYSTEM PARTNERS, LTD. SERIES 85-B


                                   MONOLITH II

                                  QFID NO. 6044



                             AMENDMENT NO. 3 TO THE
                         POWER PURCHASE CONTRACT BETWEEN
                     SOUTHERN CALIFORNIA EDISON COMPANY AND
                   ZOND WIND SYSTEM PARTNERS, LTD. SERIES 85-B

1.      PARTIES: This Amendment No. 3 to the Power Purchase Contract
        ("Contract") between Zond Windsystem Partners, Ltd. Series 85-B, a
        California limited partnership ("Seller"), and Southern California
        Edison Company, a California corporation ("Edison"), is entered into by
        Seller and Edison, individually "Party," collectively "Parties."

2.      RECITALS: This Amendment No. 3 to the Contract is made with reference to
        the following facts, among others:

        2.1     The Contract was executed between Zond Systems, Inc. and Edison
                on June 22, 1984.

        2.2     The Contract was assigned to Seller on September 9, 1985.

        2.3     The Contract was amended on September 20, 1985 to increase the
                Contract's nameplate rating and on September 13, 1989 to correct
                the location of the Generating Facility, to define Nameplate
                Rating within the body of the Contract, to limit the size of
                Seller's Generating Facility on a Nameplate Rating basis, and to
                provide that Edison will not pay for Energy and capacity which
                is produced by any portion of the Generating Facility which is
                in excess of the Nameplate Rating.

        2.4     Seller wishes to add Zond Systems, Inc. as a Seller under the
                Contract.

        2.5     The Parties wish to amend the Contract to reflect intentions
                referenced in this Section 2. The changes agreed to by amendment
                are set forth herein.



3.      AGREEMENT: The Parties agree to amend the Contract as follows:

        3.1     Section 1 is amended to add Zond Systems, Inc. as a Seller and
                shall now read in part as follows:

                "1.     Project Summary

                        This Contract is entered into by Southern California
                        Edison Company, a California corporation ("Edison"),
                        Zond Windsystem Partners, Ltd. Series 85-B, a California
                        partnership, and Zond Systems, Inc., a California
                        corporation, collectively referred to as ("Seller") . .
                        .".

4.      OTHER CONTRACT TERMS AND CONDITIONS: Except as expressly amended by this
        Amendment No. 3, the terms and conditions of the Contract and Amendments
        1 and 2 shall remain in full force and effect.

5.      EFFECTIVE DATE: This Amendment No. 3 shall become effective when it has
        been duly executed by the Parties.


6.      SIGNATURE CLAUSE: The signatories hereto represent that they have been
        duly authorized to enter into this Amendment No. 3 to the Contract on
        behalf of the Party for whom they sign. This Amendment No. 3 to the
        Contract is hereby executed as of this 31st day of October 1991.


                                              SOUTHERN CALIFORNIA EDISON COMPANY


                                              By:      /s/ Glenn J. Bjorklund
                                                     ---------------------------
                                              Name:      GLENN J. BJORKLUND
                                              Title:      Vice President



                                              ZOND WIND SYSTEM PARTNERS, LTD.
                                                SERIES 85-B
                                              By its authorized General Partner:
                                              ZOND WIND SYSTEMS MANAGEMENT
                                              CORPORATION III, a California
                                              Corporation


                                              By:      /s/ Kenneth C. Karas
                                                     ---------------------------
                                              Name:       KENNETH C. KARAS
                                              Title:        President


                                              ZOND SYSTEMS, INC.


                                              By:      /s/ Kenneth C. Karas
                                                     ---------------------------
                                              Name:      KENNETH C. KARAS
                                              Title:        President