Ridgewood Electric Power Trust IV Watch

from 10-K 3 pages Plan of Liquidation and Dissolution of Ridgewood Electric Power Trust IV

from 8-K 79 pages Interest Purchase Agreement by and Among Ridgewood Electric Power Trust I, Ridgewood Olinda, LLC, Ridgewood Electric Power Trust III, Ridgewood Electric Power Trust IV, Ridgewood Power B Fund/Providence Expansion, Ridgewood Renewable Power, LLC, Solely in Its Capacity as Sellers’ Representative, Brea Parent 2007, LLC, Solely With Respect to Section 8.8, Rhode Island Lfg Genco, LLC, Solely With Respect to Section 8.8, Ridgewood Renewable Power, LLC, Solely With Respect to Section 8.8, Ridgewood Power Management LLC, Solely With Respect to Section 8.8, and Mip II Biopower LLC as of July 26, 2010

from DEFA14A 79 pages Interest Purchase Agreement by and Among Ridgewood Electric Power Trust I, Ridgewood Olinda, LLC, Ridgewood Electric Power Trust III, Ridgewood Electric Power Trust IV, Ridgewood Power B Fund/Providence Expansion, Ridgewood Renewable Power, LLC, Solely in Its Capacity as Sellers’ Representative, Brea Parent 2007, LLC, Solely With Respect to Section 8.8, Rhode Island Lfg Genco, LLC, Solely With Respect to Section 8.8, Ridgewood Renewable Power, LLC, Solely With Respect to Section 8.8, Ridgewood Power Management LLC, Solely With Respect to Section 8.8, and Mip II Biopower LLC as of July 26, 2010

from 8-K 10 pages Agreement Regarding Representations and Warranties

from 8-K 59 pages Confidential Purchase and Sale Agreement Between the Sellers Listed on Schedule 1 and Kei (USA) Power Management Inc. Kei (Maine) Power Management (I) LLC Kei (Maine) Power Management (II) LLC Kei (Maine) Power Management (III) LLC Kei (Maine) Power Management (IV) LLC 2240867 Delaware, Inc. 2240870 Delaware, LLC 2240871 Delaware, LLC 2240872 Delaware, LLC Dated as of November 20, 2009 Confidential

from 8-K 10 pages First Amendment to Purchase and Sale Agreement

from DEFA14A 10 pages First Amendment to Purchase and Sale Agreement

from 8-K 47 pages Purchase and Sale Agreement Between Ridgewood Maine, L.L.C., Indeck Energy Services, Inc., Covanta Energy Corporation, and for Certain Limited Purposes Indeck Maine Energy, LLC as of August 19, 2008

from DEFA14A 47 pages Purchase and Sale Agreement Between Ridgewood Maine, L.L.C., Indeck Energy Services, Inc., Covanta Energy Corporation, and for Certain Limited Purposes Indeck Maine Energy, LLC as of August 19, 2008

from 8-K/A ~20 pages Amended and Restated Operating Agreement

from 8-K/A ~20 pages Agreement to Purchase Membership Interests

from 8-K/A ~5 pages Amendment to Agreement of Merger

from 8-K/A ~5 pages Amendment to Agreement of Merger

from 8-K ~5 pages Amendment to Agreement of Merger

from 8-K ~50 pages Agreement of Merger