You are here

Energy Efficiency Design Standards for New Federal Commercial and Multi-Family High-Rise Residential Buildings

Current Standard

The U.S. Department of Energy (DOE) has published final rule 10 CFR 433: Energy Efficiency Design Standards for New Federal Commercial and Multi-Family High-Rise Residential Buildings (July 9, 2013) to implement provisions in the Energy Conservation and Production Act (ECPA) that require DOE to update the baseline federal energy efficiency performance standards for the construction of new federal commercial and multi-family high-rise residential buildings. This rule updates the baseline federal commercial standard to ASHRAE Standard 90.1-2010, effective September 9, 2013.

The scope of the new standard comprehensively covers the Building Envelope, HVAC, Service Water Heating, Power, Lighting, and other equipment for different climate zones. The most significant changes included in the new standard are the following:

  • Expanded scope to cover receptacles and process loads.
  • Increased stringency in building envelope (opaque elements and fenestration) requirements and continuous air barrier and albedo roof requirements have been added.
  • Lowered interior lighting power densities, additional occupant sensing controls and mandatory day lighting requirements, and a new five-zone exterior lighting power density table were added.
  • Higher equipment efficiencies; more requirements for energy recovery, economizers, and more energy-conserving controls.
  • Clarification in and expansion of modeling requirements.

After a regulatory action has been issued, Section 6(a)(3)(E) of Executive Order (EO) 12866 requires agencies to identify in a complete, clear, and simple manner, the substantive changes between the draft submitted to The Office of Management and Budget's Office of Information and Regulatory Affairs (OIRA) for review and the action subsequently announced, and identify those changes in the regulatory action that were made at the suggestion or recommendation of OIRA. This OMB compare document is intended to comply with this requirement.

Previous Standard

DOE previously updated the requirements for energy efficiency in newly constructed federal buildings. The rule, 10 CFR 433: Energy Efficiency Standards for the Design and Construction of New Federal Commercial and Multi-family High Rise Residential Buildings applied to both commercial and multi-family residential buildings four or more stories in height for which design for construction began on or after August 10, 2012.

The rule updated the baseline standard in 10 CFR 433 to ASHRAE Standard 90.1-2007. New federal commercial buildings were required (effective August 10, 2012) to achieve the ASHRAE Standard 90.1-2007 level of energy efficiency or 30% greater than Standard 90.1-2007 when doing so was cost-effective within the lifecycle of the building. If the additional 30% savings was not cost-effective, an agency had to evaluate the cost-effectiveness of alternate designs at successive decrements below 30% (e.g., 25%, 20%) to identify the most cost-effective design for that building. Life-cycle cost effectiveness is established using the methodology defined in10 CFR Part 436, Subpart A. The rule did not change the existing requirement that buildings for which design for construction began on or after January 3, 2007, but before August 10, 2012, are required to comply with ASHRAE Standard 90.1-2004 or 30% better than ASHRAE Standard 90.1-2004, if life-cycle cost-effective.

After a regulatory action has been issued, Section 6(a)(3)(E) of Executive Order (EO) 12866 requires agencies to identify in a complete, clear, and simple manner, the substantive changes between the draft submitted to The Office of Management and Budget's Office of Information and Regulatory Affairs (OIRA) for review and the action subsequently announced, and identify those changes in the regulatory action that were made at the suggestion or recommendation of OIRA. This OMB compare document is intended to comply with this requirement.