Minimum Energy Performance - Prerequisite

Commercial Interiors - Energy & Atmosphere

Intent - To establish the minimum level of energy efficiency for the proposed building and systems to reduce environmental and economic impacts associated with excessive energy use.

Requirements

Design portions of the building as covered by the tenant’s scope of work to comply with ANSI/ASHRAE/IESNA Standard 90.1-2007 (with errata but without addenda), and complete the following:

• Comply with the mandatory provisions (Sections 5.4, 6.4, 7.4, 8.4, 9.4 and 10.4) of ANSI/ASHRAE/IESNA Standard 90.1-2007 (with errata but without addenda).
• Achieve the prescriptive requirements (Sections 5.5, 6.5, 7.5 and 9.5) or performance requirements (Section 11) of ANSI/ASHRAE/IESNA Standard 90.1-2007 (with errata but without addenda1).
• Reduce connected lighting power density 10% below that allowed by ANSI/ASHRAE/IESNA Standard 90.1-2007 (with errata but without addenda1) using either the Space-by-Space Method or by applying the whole building lighting power allowance to the entire tenant space.
• Install ENERGY STAR® qualified equipment for 50% (by rated-power) of ENERGY STAR eligible equipment installed as part of the tenant’s scope of work. This requirement includes appliances, office equipment, electronics, and commercial food service equipment. Excluded are heating, ventilating and air conditioning (HVAC), lighting, and building envelope products.

Projects in California may use Title 24-2005, Part 6 in place of ANSI/ASHRAE/IESNA Standard 90.1-2007.

Referenced Standards

 ANSI/ASHRAE/IESNA Standard 90.1-2007, Energy Standard for Buildings Except Low-Rise Residential - Lighting (Section 9), www.ashrae.org, (800) 527-4723.

Design Strategies

Design the systems impacted in the tenant’s scope of work to maximize energy performance. Use a computer simulation model to assess the energy performance and identify the most cost-effective energy measures. Quantify energy performance compared with a baseline building.

If local code has demonstrated quantitative and textual equivalence following, at a minimum, the U.S. Department of Energy (DOE) standard process for commercial energy code determination, then the local code may be used to satisfy this prerequisite in lieu of ANSI/ASHRAE/IESNA Standard 90.1-2007. Details on the DOE process for commercial energy code determination can be found at http://www.energycodes.gov/implement/determinations_com.stm.