The Department of Energy updated federally-owned commercial and residential building energy efficiency standards on July 9 to reflect the 2010 version of the voluntary American Society of Heating, Refrigerating, and Air-Conditioning Engineers Standard 90.1. New federal buildings built after July 9, 2014 must achieve the updated ASHRAE baseline, and should exceed the baseline level by at least 30 percent if it is cost-effective over the building’s lifecycle. This updated standard is expected to save 12.2 percent more source energy, reduce emissions, and provide long-term cost savings.