American Society of Heating, Refrigeration, & Air-Conditioning Engineers
American Council for an Energy-Efficient Economy
American Society of Mechanical Engineers
Association of Energy Engineers
Canadian District Energy Association
Electric Power Research Institute
International District Energy Association
U.S. Department of Energy – Energy Efficiency and Renewable Energy
EPA Combined Heat And Power Partnership
U.S. Department of Energy’s Energy Saving Tips
Building Owners and Managers Association’s Long Term Energy Saving Tips