This guide was released May 2012. It targets standard mid- to large-size hospital, typically at least 100,000 ft2 in size, but the strategies apply to all sizes and classifications of large hospitals. Space types covered include cafeterias and kitchens; conference and office areas; reception and waiting areas; examination and treatment rooms; clean and soiled workrooms; nurse stations; nurseries and patient rooms; operating, procedure and recovery rooms; sterilizer equipment areas; pharmacies and laboratories; triage, trauma, and emergency rooms; physical therapy and radiology/imaging rooms; storage, receiving, and mechanical/electrical/telecom rooms. This Guide does not directly address other, atypical or special-use spaces. This guide was developed through the collaboration of ASHRAE, the American Institute of Architects (AIA), the Illuminating Engineering Society of North America (IES), and the U.S. Green Building Council (USGBC), with support from the Department of Energy (DOE), to help meet all of an owner's energy performance requirements. In an effort to promote building energy efficiency, ASHRAE and its partners has made this guide available for download (PDF) at no charge.