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DOE Updates Commercial Standard

December 12, 2011
KEYWORDS ASHRAE / DOE
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ATLANTA — Following preliminary analysis that ASHRAE/IES’ 2010 energy-efficiency standard contains significant energy savings over the 2007 standard — 18.2 percent source energy savings and 18.5 site energy savings — the U.S. Department of Energy (DOE) has issued a ruling that establishes the 2010 standard as the commercial building reference standard for state building energy codes.

In an announcement in the Oct. 19 edition of The Federal Register, DOE attributes the greater energy savings to improvements in ANSI/ASHRAE/IESNA Standard 90.1-2010, Energy Standard for Buildings Except Low-Rise Residential Buildings, related to better lighting, daylighting, controls, and building envelope and better mechanical systems and application to more systems.

With the Oct. 19 ruling, Standard 90.1-2010 serves as the commercial building reference standard for state building energy codes under the federal Energy Conservation and Production Act. As a result, states are required to certify by Oct. 18, 2013, that they have updated the provisions of their commercial building code regarding energy efficiency to meet or exceed 90.1-2010.

“The foundation of energy-efficient buildings continues to grow stronger with the news that DOE is now referencing the 2010 standard,” Ron Jarnagin, ASHRAE president, said. “ASHRAE hopes to make that foundation even stronger through our current work with IES developing the 2013 standard.”

“The DOE has determined that the quantitative analysis of the energy consumption of buildings built to Standard 90.1-2010, as compared to buildings built to Standard 90.1-2007, indicates national source energy savings of approximately 18.2 percent of commercial building consumption,” according to DOE. “Additionally, DOE has determined site energy savings are estimated to be approximately 18.5 percent.”

The ruling comes on the heels of a July announcement that established the 2007 standard as the commercial building reference standard for state building energy codes. The DOE noted that because the 2010 determination was published prior to the two-year deadline, states have to demonstrate that their energy code meets or exceeds the stringency of the 2007 standard; states are allowed to file just one certification to address both determinations.

Since being developed in response to the energy crisis in the 1970s, Standard 90.1 now influences building designs worldwide. It has become the basis for building codes, and the standard for building design and construction throughout the United States. ASHRAE and IES publish a revised version of the standard every three years.

Publication date: 12/12/2011

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