Federal Building Energy Efficiency Standards: DOE Kicks It Up a Notch – Footnote

As discussed in Federal Building Energy Efficiency Standards:  DOE Kicks It Up a Notch, the US Department of Energy (DOE) has designated American Society of Heating, Refrigerating, and Air-Conditioning Engineers (ASHRAE) Standard 90.1 as the baseline energy efficiency standard for all new Federal commercial buildings (including multi-family high rise residential buildings), and recently updated the referenced standard from ASHRAE Standard 90.1-2007 to ASHRAE Standard 90.1-2010.

In announcing the update, the DOE Office of Energy Efficiency and Renewable Energy emphasized that the 2010 revision saves approximately 18.2% more source energy than the 2007 version, and identified the most significant changes as follows:

  • 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,
  • Higher equipment efficiencies; more requirements for energy recovery, economizers, and more energy-conserving controls, and,
  • Clarification in and expansion of modeling requirements.

Vicki R. Harding, Esq.

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