Book Helps You Implement Energy Savings Plan

ASHRAEA new book from ASHRAE provides guidance on increasing energy efficiency in existing buildings through measuring and tracking efficiency and implementing an efficiency plan.

Energy Efficiency Guide for Existing Commercial Buildings: Technical Implementation provides clear and easily understood technical guidance for energy upgrades, retrofits and renovations by which building engineers and managers can achieve at least a 30 percent improvement in energy performance relative to a range of benchmark energy utilization indexes. It features practical means and methods for planning, executing and monitoring an effective program, based on widely available techniques and technologies.

The book recommends some tips on how to begin the energy savings process:

  1. Calculate energy use and cost.
  2. Set energy performance goals.
  3. Measure and analyze current energy use.
  4. Select and implement energy efficiency measures.
  5. Measure and report improvements.
  6. Continue to track performance and reassess goals.

Energy Efficiency Guide for Existing Commercial Buildings: Technical Implementation is the second energy efficient guide for existing commercial buildings developed by the same group developing at the Advanced Energy Design Guide series for new buildings – ASHRAE, the American Institute of Architects, the Illuminating Engineering Society of North America and the U.S. Green Building Council and supported by the U.S. Department of Energy. In addition, the Building Owners and Managers Association and the U.S. General Services Administration were involved in its development. The first, Energy Efficiency Guide for Existing Commercial Buildings: The Business Case for Building Owners and Managers, provides the rationale for making economic decisions related to improving and sustaining energy efficiency in existing buildings.

The cost of Energy Efficiency Guide for Existing Commercial Buildings – Technical Implementation is $75 ($64, ASHRAE members). To order, contact ASHRAE Customer Contact Center at 1-800-527-4723 (United States and Canada) or 404-636-8400 (worldwide), fax 404-321-5478, or visit

DOE updates national reference standard for commercial buildings

ASHRAEThe U.S. Department of Energy (DOE) has issued a ruling that establishes the ASHRAE/IES’s 2010 energy efficiency standard 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 notes that ANSI/ASHRAE/IES Standard 90.1-2010, Energy Standard for Buildings Except Low-Rise Residential Buildings, offers significant energy savings over the 2007 standard – 18.2 percent source energy savings and 18.5 site energy savings.

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 DOE noted that the newer version of the standard contains 19 positive impacts on energy efficiency. These impacts included changes made through the public review process in which users of the standard comment and offer guidance on proposed requirements. Specifically the positive impacts include:

  • Requirements for daylighting controls under skylights and commissioning of daylighting controls; increased use of heat recovery; cool roofs in hot climates; lower illuminance in certain exterior zones; skylights and daylighting in some building types; reduced ventilation energy; supply air temperature reset for non-peak conditions; efficiency requirements for data centers; lower lighting power densities; control of exterior lighting; occupancy sensor for many specific applications; daylighting control requirements for side-lighted spaces; and daylighting controls in more spaces.
  • Updated chiller efficiency requirements.
  • Extension of VAV fan control requirements.
  • Expansion of new lighting power densities to more retrofits and automatic damper requirements and use of economizers.
  • Minimizes exceptions to switched receptacle requirement.

The ruling comes on the heels of a July announcement that established the 2007 standard as the 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.