Energy losses often occured in the industrial processes. The losses are sometimes substantial, but neglected. To overcome the matter, people should consider how to eliminate or at least to reduce the losses.In the energy management program, some methods are done to conserve energy. One of the methods is utilization of exhaust gas for another process. this paper analizes the possibility of direct utilization of exhaust gas in diesel-generator as energy source of absorption refrigerator.Analysis is based on the need of heat energy on the absorption refrigeration system and the capacity of exhaust gas. As the result, the capacity of the exhaust gas meets requirement of the heat energy required for absorption refrigerator. The analysis is also considered on the economic aspect. From the analysis, it can be summerized that the exhaust gas of diesel-generator is feasible as energy source of absorption refrigerator.