This module is the eleventh in a series of eleven modules in an energy conservation curriculum for secondary and postsecondary vocational students. It is designed for use by itself or as part of a sequence of four modules on energy conservation in building construction and operation (see also modules 8, 9, and 10). The objective of this module is to train students in the recognition, implementation, and utilization of energy economics in energy consumption and possible energy conservation. First, an introduction to the module and definitions of key terms are provided. Next, the text is presented in the following four units: (1) energy use and demand profiles; (2) energy use and demand profiles in the home; (3) energy conservation methods and trade-offs; and (4) energy costing and accounting. The information in each unit is presented in lecture format accompanied by laboratory exercises and questions/examples for class discussion. A bibliography and several tables illustrating the text material are found at the end of the module. (BM)