In this insightful and practical desk reference, veteran journalist and educator Craig DiLouie identifies, details and compares a variety of opportunities which can be effectively utilized, both to improve lighting performance, as well as to save energy in existing buildings. The book explains in clear terms the decision-making process behind whether retrofitting or redesigning an existing building's lighting system will yield the best, most cost-effective results. A discussion of basic lighting design techniques, advanced lighting strategies, how to evaluate and compare lighting equipment, and the important role planned maintenance can play in saving energy and ensuring long-term performance are included. Also covered are details of the current status of lighting-related legislation and energy codes.