LEED point adjustment when ASHRAE 90.1-2019 is used as baseline

elvin ruya

LEEDuser Basic Member

0 thumbs up

Project location :

United States

November 3, 2022

Is there a direct correlation for LEED points when ASHRAE 90.1-2019 baseline is used instead of 2016?

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Marcus Sheffer

LEED Fellow

7group / Energy Opportunities

LEEDuser Expert

4454 thumbs up

Tue, 11/08/2022 - 16:54

I don't believe that USGBC has issued an adjustment table for 90.1-2019 yet.

Michelle Christopher

Buro Happold

LEEDuser Premium Member

5 thumbs up

Tue, 11/08/2022 - 21:14

Since Appendix G remains largely fixed between 2016 and 2019, you should just be able to use the BPFs from 90.1-2016 instead of the BPFs in 2019 to calculate savings/ points.

Marcus Sheffer

LEED Fellow

7group / Energy Opportunities

LEEDuser Expert

4454 thumbs up

Tue, 11/08/2022 - 21:39

There is a difference in stringency between 90.1-2016 and 90.1-2019 even if Appendix G has not changed much or at all. This impacts the savings. See the final US DOE determination of savings - https://www.energycodes.gov/sites/default/files/2021-07/Standard_90.1-2019_Final_Determination_TSD.pdf In the past this determination has been used to adjust the thresholds of savings relative to points.

Eric Dixon

SmithGroupJJR

LEEDuser Premium Member

1 thumbs up

Mon, 03/18/2024 - 14:21

LEED interpretation #10500 allows you to use 90.1-2019 or 90.1-2022 Appendix G and substitute the BPF from 90.1-2016 https://www.usgbc.org/leedaddenda/10500