Exhibit 10.53 ------------- AMENDMENT TO COSO EXCHANGE AGREEMENT ------------------------------------ The Parties to the EXCHANGE AGREEMENT dated January 11, 1994 do hereby amend said Agreement to substitute the attached revision of Exhibit A dated April 12, 1995 in place of the original Exhibit A. "PARTNERSHIPS" Coso Energy Developers Coso Power Developers By Coso Hotsprings Intermountain Power By Coso Technology Corporation By:/s/ Thomas R. Mason By:/s/ Thomas R. Mason ----------------------------------- ----------------------------- Title: President Title: President By Caithness Coso Holdings, L.P. By Caithness Navy II Group, L.P. By Caithness BLM Group, L.P. By Mojave Power IV, Inc. By Mojave Power III, Inc. By:/s/ James D. Bishop, Jr. By:/s/ James D. Bishop, Jr. - -------------------------------------- ------------------------------ Title: President Title: President By Caithness CEA Geothermal, L.P. Coso Finance Partners By Mojave Power III, Inc. By China Lake Operating Company By: /s/ James D. Bishop By:/s/ Thomas R. Mason ---------------------------------- ----------------------------- Title: President Title: President By ESCA Limited Partnership By ESI Geothermal Inc. By:/s/ Kenneth P. Hoffman ----------------------------- Title: President By Mojave Power, Inc. By:/s/ James D. Bishop, Jr. ----------------------------- Title: President "OPERATOR" California Energy Company, Inc. By: /s/ Thomas R. Mason -------------------------------------------- Thomas R. Mason, President