Guidance on Standard 90.1-2016 available from ASHRAE
A newly published document from ASHRAE and IES gives users of their energy efficiency standard immediate access to an optional third path for compliance, providing more flexibility for the industry, according to the associations.
Standard 90.1-2013 Appendix G: Performance Rating Method is an excerpt from ANSI/ASHRAE/IES Standard 90.1 (I-P), Energy Standard for Buildings Except Low-Rise Residential Buildings. ASHRAE says the document gives users immediate access to selected addenda slated to be published in the 2016 version of the standard. The majority of the document is comprised of addendum bm, which allows Appendix G to be used as a compliance path within the standard.