ABSTRACT
We do not live in paradise, and our resources are limited. Therefore, it behooves us to try to reduce the costs of energy to a minimum — subject, of course, to the constraint of providing energy demands for an industrial process or maintaining the desired indoor environment and services to a building. In the final analysis, the minimum costs of energy systems drive both design and DG system operation. Although succinctly stated, finding the optimum is subject to uncertainties such as future energy prices, future rental values, future equipment performance, and future and different uses of a building.
