A series of guides written by leading building organizations to advance energy efficiency are on target, helping designers achieve 30% energy savings over the minimum code requirements of Standard 90.1-1999, developed by the American Society of Heating, Refrigerating and Air-Conditioning Engineers and others, according to a market assessment released on May 20 by ASHRAE. The assessment, which focused on ASHRAE members, was conducted by the Energy Center of Wisconsin and showed that 70% of ASHRAE members who have used the guides find them credible and useful design resources. The guides were developed in conjunction with the American Institute of Architects, the Illuminating Engineering Society of North America, the U.S. Green Building Council and the U.S. Dept. of Energy.