The Department of Energy (DOE) has determined that the 2007 edition of the Energy Standard for Buildings, Except Low-Rise Residential Buildings, American National Standards Institute (ANSI)/American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE) Illuminating Engineering Society of North America (IESNA) Standard 90.1-2007, (Standard 90.1-2007) would achieve greater energy efficiency in buildings subject to the code, than the 2004 edition (Standard 90.1-2004 or the 2004 edition). Also, DOE has determined that the quantitative analysis of the energy consumption of buildings built to Standard 90.1-2007, as compared with buildings built to Standard 90.1-2004, indicates national source energy savings of approximately 3.9 percent of commercial building energy consumption. Additionally, DOE has determined site energy savings are estimated to be approximately 4.6 percent. Upon publication of this affirmative final determination, States are required to certify that they have reviewed the provisions of their commercial building code regarding energy efficiency, and as necessary, updated their code to meet or exceed Standard 90.1-2007. Additionally, this notice provides guidance to States on Certifications, and Requests for Extensions of Deadlines for Certification Statements.

Source: Federal Register