Prerequisite questions for Minimum Energy Performance v4.1

Green Lab

LEEDuser Basic Member

6 thumbs up

Project location :

Portugal

May 10, 2022

For the prerequisite, can we obtain it, if we only achieve improvements on one of our indicators (Cost or GHG emissions)? e.g. -9.4% for Cost and +14.4% for GHG Emissions

In v4 we couldn't use renewables to obtain prerequisite % improvement, can we now on v4.1?

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Green Lab

LEEDuser Basic Member

6 thumbs up

Tue, 05/10/2022 - 15:53

If we can use on-site renewables in v4.1, why does it appear on the MEPC summary tab "% Improvement Cost" the value of improvement without renewables?
Our result of Cost before and after subtracting renewables is -9.4% and 16.4%.

If we can use on-site renewables in v4.1, why does it appear on the MEPC summary tab "% Improvement GHG Emissions (exl.tier 2- and 3- renewables)" the exclusion of renewables?
Our result of GHG Emissions before and after subtracting renewables is 14.4% and 34.6%.

Jamy Bacchus

Associate Principal

ME Engineers

LEEDuser Premium Member

29 thumbs up

Tue, 05/10/2022 - 19:55

In v4.1 it lists: "Only on-site or on-campus renewable energy that meets ASHRAE Standard 90.1-2016 Section G 2.4.1 requirements for on-site renewable energy may be used to meet minimum ASHRAE Standard 90.1-2016 performance requirements."

In v4 it was:

"Projects must meet the minimum percentage savings before taking credit for renewable energy systems."

For v4.1 EAp2 you're allowed to choose the metric:

"Document the PCI, PCIt, and percentage improvement using metrics of cost or greenhouse gas (GHG) emissions."

Green Lab

LEEDuser Basic Member

6 thumbs up

Wed, 05/11/2022 - 08:27

Thank you for your comment. I also understand it like that. If I could show a picture I would. But in my MEPC (latest version) summary tab, the results for the prerequisite don't account for the renewables. If they did results would be 16.4% (Cost) and 34.6% (GHG Emissions), INSTEAD they show -9.4% (the opposite of an improvement) and 14.4% for GHG Emissions. This has grounded my doubts.