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Energy Savings - Knowledge Base

New National Commercial Building Reference Standard For All Federal and State Building Energy Codes

The Department of Energy has established ANSI/ASHRAE/IESNA Standard 90.1-2004
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The Department of Energy has established ANSI/ASHRAE/IESNA Standard 90.1-2004, Energy Standard for Buildings Except Low-Rise Residential Buildings, as the new national commercial building reference standard, for all federal and state building energy codes, starting in 2010.

By December 30, 2010, all states in the United States must certify that their building codes meet or exceed the requirements in ASHRAE/IESNA’s 2004 energy efficiency standard, under a 12/30/08 ruling. If they do not have a code in place at least as stringent as 90.1-2004, they must justify why they can't comply.

“The quantitative analysis of the energy consumption of buildings built to Standard 90.1-2004, as compared with buildings built to Standard 90.1-1999, indicates national source energy savings of approximately 13.9% of commercial building energy consumption. Site energy savings are estimated to be approximately 11.9%,” according to the ruling published in The Federal Register.

DOE noted that the newer version of the standard contained 13 positive impacts on energy efficiency, several of which are related to lighting:

• Complete replacement (revision) of interior lighting power density (LPD) allowances.
• Revised exterior lighting power density allowances.
• Addition of occupancy sensor requirements for classrooms, meeting and lunch rooms.
• Lower retail sales lighting power allowance.
• New exit sign wattage requirement.

In addition, ASHRAE is working on providing more stringent energy guidance in a proposed standard for high-performance buildings. Being developed in partnership with IESNA and the U.S. Green Building Council, Standard 189.1, Standard for the Design of High-Performance Green Buildings Except Low-Rise Residential Buildings, will provide minimum requirements for the design of high-performance new commercial buildings and major renovation projects, addressing energy efficiency, a building’s impact on the atmosphere, sustainable sites, water use efficiency, materials and resources, and indoor environmental quality.

ASHRAE publishes a revised version of the standard every three years. The latest version is the 2007 version.

If you need any assistance in interpreting these guidlines, understanding what Lighting Power Densities (LPDs) apply, how to specifiy your lighting products to maximize your energy saving potential, performing supporting calculations, or developing lighting layouts, Please >> Contact Crownlite.

The Crownlite Knowledge Base is supplied as a convenience only. Crownlite assumes no responsibility or liability for: errors, omissions, misinterpretations, relevance, or the application to any purpose, for its Knowledge Base listings. We recommend the reader reconfirm all information before using it for any specific purpose.

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