Monday - March 23, 2026
PNNL Updates ASHRAE 90.1 Modeling Rules
March 17, 2026
WASHINGTON, March 17 (TNSLrpt) -- Pacific Northwest National Laboratory released report PNNL-36136, the ANSI/ASHRAE/IES Standard 90.1-2022 Performance Rating Method Reference Manual. Authors include S. Goel, M. Rosenberg, M. Karpman, C. LaPerle, C. Eley, and E. Mets. This December 2024 document standardizes energy modeling for commercial building code compliance using Appendix G's Performance Rating Method.



The PRM compares proposed designs against fixed baselines . . .

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