Summarized in this compendium are approximately 500 ideas being used by colleges and universities in the United States to deal with the problem of energy conservation. These ideas range from suggestions that cost pennies to implement to sophisticated computer controls or the construction of new buildings which incorporate alternative energy sources. Generally, the ideas are simple and they can be easily adopted on other campuses. Among the successful energy-saving approaches reported are those that involve education, management, using waste energy, improving lighting practices, modifying ventilation systems, and installing insulation. Grouped according to problem area, each entry includes a short explanation of the procedure followed by a summary of costs and resulting benefits. Appendix tables list ideas by topic, institution, and geographic location. Also provided are names, addresses, and phone numbers of contact persons for each idea. (Author/WB)