Si~lltil ______________________ T_R_-3_1_2. PREFACE This report was prepared as part of the Decentralized Energy Studies Task No. 5323 by the Solar Energy Research Institute. The purpose of the report is to explore organizational possibilities for the ownership and management of decentralized renewable energy systems serving more than a single consumer. It compares the structures, operations, and previous energy programs of three existing types of organization that meet the decentralization criteria of consumer ownership and control of energy production.