What is the relationship between ASHRAE Standard 90.1, the Advanced Energy Design Guide (AEDG) series, and Standard 189.1P?
While each of these publications is related to reducing energy use of buildings, each has a different stated purpose and objective. ANSI/ASHRAE/IESNA Standard 90.1, Energy Standard for Buildings except Low-Rise Residential Buildings, is published as a consensus standard to provide minimum requirements for the energy-efficient design of new and renovated or retrofitted buildings. 90.1 has become the basis for building codes, and the standard for building design and construction throughout the United States. 90.1-2004 has recently been approved by DOE as the minimum standard to be met by all states in the U.S. It is written in a code intended language as minimum requirements so it does not necessarily provide exemplary or state-of-the-art design guidance. ASHRAE Standard 90.1 is on continuous maintenance and is republished on a three year cycle. The current version is 90.1-2007. In contrast the ASHRAE Advanced Energy Design Guides (AEDG) are a series of publications designed to provide p
