IDEA fosters the success of its members as leaders in providing reliable, economical, efficient and environmentally sound district energy services. Please visit districtenergy.org for more information. American Society of Heating, Refrigeration and Air-Conditioning Engineers, Inc. Please visit ashrae.org for more information. The American Society of Mechanical Engineers Please visit asme.org for more information. TEG Holds a Federal Supply Group 871 Contract for Energy Services Contract #GS-10F-0180T Please visit gsaelibrary.gsa.gov for more information.