A. J. Glaser, Lighting Controls Assn. and HUNT Dimming, Fort Collins, Colo.

Lighting the way to 90.1

View the full story, including all images and figures, in our monthly digital edition ASHRAE/IES 90.1, Energy-Efficient Design of New Buildings Except Low-Rise Residential Buildings , along with the International Energy Conservation Code (IECC), is used as a standard for energy-efficient commercial building construction throughout the United States. Today, most states have adopted 90.1 or IECC as their commercial energy code, have a code based on one of them, or maintain a state-specific code with similar requirements. Currently, the United States presents a patchwork of energy codes that are either state-specific or based on ASHRAE 90.1-1999, 2001, 2004, or 2007; or IECC 2003, 2006, or 2009. Right now, 90.1-1999 is the national energy standard of record for state code adoption in the United States.