Appendix G Reference Manual Published by PNNL

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Pacific Northwest National Laboratory has recently published a technical report titled ASHRAE 90.1-2010 Performance Rating Method Reference Manual. This work was funded through DOE's Building Energy Codes Program. The report is intended to be a reference manual for the Appendix G Performance Rating Method (PRM) of ASHRAE Standard 90.1-2010. The procedures and processes described in this manual are designed to provide consistency and accuracy by filling in gaps and providing additional details needed by users of the PRM. This document builds from existing reference manuals including the Nonresidential Alternative Compliance Method (NACM) and Commercial Energy Service Network (COMNET) and has undergone an extensive vetting and review process.

Potential users of this manual include energy modelers, software developers, and implementers of "beyond code" energy programs. Energy modelers using ASHRAE Standard 90.1-2010 for beyond code programs can use this document as a reference manual for interpreting requirements of the PRM. Software developers of tools for automated creation of the baseline model can use this reference manual as a guideline for developing the rules for the baseline model.

To download this report, go to

Best Regards,

Supriya Goel
Energy Research Engineer
Building Energy Systems and Technology
Pacific Northwest National Laboratory
620 SW 5th Ave, Suite 810
Portland, OR 97204
Tel: 503-227-7766
Supriya.Goel at

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