This reference contains brief and longer entries, up to several pages, on critical concepts, issues, and solutions that form the backbone of energy efficiency and conservation. The book allows readers to compare the best approaches for defining energy goals, assessing energy use parameters, evaluating energy provider options, and integrating the benefits of competitive energy procurement. It will prove useful to professionals responsible for energy management and related services, including facility managers and engineers, building owners and managers, procurement managers, and energy managers and engineers. Hordeski is a licensed professional in control systems engineering.