Builders have had to wrestle with ever-increasing energy code requirements for almost two decades. Even though the national model energy code, the International Energy Conservation Code (IECC), has ...

Illinois' new energy conservation code is mostly based on the 2021 IECC, which the U.S. Dept. of Energy has found can yield an average 9.38% site energy savings on average. Illinois implemented a ...

The model energy codes, in their various forms, have been at the forefront of the discussion regarding building design in recent years. These codes include the International Energy Conservation Code ...

An international group that develops building codes adopted by a wide swath of U.S. cities and counties abruptly pared back a plan to force new homes to be more climate-friendly. The International ...

ARLINGTON HEIGHTS, Ill. — In the just-published 2021 edition of the International Energy Conservation Code (IECC), fan energy index (FEI) replaces fan efficiency grade (FEG) as the metric for ...