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The fuel cell powerplant embodies many attractive features including high electrical efficiency, simple recovery of heat, size flexibility, and lack of disturbance to the environment. As a result, systems incorporating fuel cell powerplants can be located on-site, close to the point of energy demands, permitting effective utilization of recovered heat. In this way, over 80% of the energy value of the fuel can be utilized leading to significant energy resource savings. This investigation has addressed conservation potential with on-site fuel cell systems in industrial applications. This investigation was limited in two ways: First, the analysis only examined energy resource conservation potential with on-site fuel cell systems applied at the industrial process level; and second, the number of processes investigated was, of necessity, limited. Twelve specific industrial processes were selected for study by Gordian Associated, Incorporated, based upon screening of ten major industries, including petroleum refining, basic petrochemicals, fertilizer, food, aluminium, copper, steel, paper, rubber, and plastics. An on-site fuel cell system was defined and the energy resource consumption was for each of the selected industrial processes. When compared with conventional systems, energy resource savings of 190,000 barrels of oil equivalent per day are possible through extensive use of on-site fuel cell systems in the selected processes. The potential energy resource savings for the individual processes examined are indicated. With potential savings of 54,000 barrels of oil (equivalent) per day, the largest savings are found in petroleum refining. Of the twelve processes, newsprint production offers the greatest relative savings - 32%. (ERA citation 09:002585)