This manual was developed to provide assistance to public officials first considering energy conservation in existing public buildings. The manual focuses on management decisions which must be made in implementing energy conservation programs for existing buildings. It provides assistance in developing a plan of attack, establishing schedules, selecting buildings, creating preliminary energy savings estimates, developing engineering work statements, evaluating consultants, estimating fees, and rough estimating of construction costs. An initial assumption is made that many jurisdictions already have begun low-cost conservation measures such as lowering thermostat settings, night temperature set backs, de-lamping and closing off unused spaces. Attention, therefore, is directed toward additional steps often requiring some capital expenditure that can be taken to gain further substantial energy savings. Retrofit for energy conservation in existing buildings, as addressed in this manual, should be applicable to many state, county and local governments and special purpose districts. Experience has proven that energy can be saved and energy costs reduced significantly by concentrating on modifications to building use patterns, operating procedures and design aspects. These savings can occur without sacrificing occupant comfort or important functions to be performed within the facility. (Author/BB)