A final qualitative analysis of all addenda to ASHRAE Standard 90.1-2007 that were included in ASHRAE Standard 90.1-2010 was conducted. All 109 addenda processed by ASHRAE in the creation of ASHRAE Standard 90.1-2010 from ASHRAE Standard 90.1-2007 were evaluated by the U.S. Department of Energy (DOE) for their impact on energy efficiency. DOE determined whether each addendum would have a positive, neutral, or negative impact on overall building efficiency.