[Bldg-sim] LEED Optimize Energy Performance credit update 2024 (Raquel Viula)

[Attila Kopányi]

Hi Raquel!

I recently completed this credit for a small laboratory building in Sweden.
We're expecting to receive 14 out of the available 18 points (not yet
awarded by USGBC). There was no "special" design feature (DOAS with
efficient HR, an efficient water source chiller, and district heating),
only standard design for Sweden - no integrated design process. LEED v4 was
used, so the baseline building is still based on ASHRAE 90.1 2010, which
results in a not so efficient baseline.
For an office building, I would expect lower credit points, as the airflows
would be lower compared to a laboratory (decreasing the savings on heating
and fans) + there would be more penalty on (probably) not achieving the
requirements in "8.4.2 - Automatic Receptacle Control" as there would be
more office areas.
Regarding the decarbonised energy grid in Sweden: this can have an effect
if you expect to achieve most of your savings in e.g. district heating or
natural gas, and not in electrical energy use. In this case, your GHG
savings can be much lower than the source energy savings. In our case, we
achieved almost the same savings in electrical energy and in district
heating, therefore the low GHG emission factor for the Swedish electricity
grid did not affect the results very much.

Best,
Attila Kopányi
Senior Engineer
CBRE | Global Building Performance Modelling Team
attila.kopanyi at cbre.com

<bldg-sim-request at lists.onebuilding.org> ezt írta (időpont: 2025. jún. 13.,
P, 22:05):

> Send Bldg-sim mailing list submissions to
>         bldg-sim at lists.onebuilding.org
>
> To subscribe or unsubscribe via the World Wide Web, visit
>         http://lists.onebuilding.org/listinfo.cgi/bldg-sim-onebuilding.org
> or, via email, send a message with subject or body 'help' to
>         bldg-sim-request at lists.onebuilding.org
>
> You can reach the person managing the list at
>         bldg-sim-owner at lists.onebuilding.org
>
> When replying, please edit your Subject line so it is more specific
> than "Re: Contents of Bldg-sim digest..."
> Today's Topics:
>
>    1. LEED Optimize Energy Performance credit update 2024 (Raquel Viula)
>
>
>
> ---------- Forwarded message ----------
> From: Raquel Viula <raquel.viula at afry.com>
> To: "bldg-sim at lists.onebuilding.org" <bldg-sim at lists.onebuilding.org>
> Cc:
> Bcc:
> Date: Fri, 13 Jun 2025 14:05:42 +0000
> Subject: [Bldg-sim] LEED Optimize Energy Performance credit update 2024
>
> Dear list
>
>
>
> I wonder if anyone has experience of calculating energy performance
> according to the update introduced in March 2024 to the Optimize Energy
> Performance credit of LEED BD+C v4. In case yes, can any insights be shared
> in terms of how difficult it has now become to get the points for the
> credit in comparison to the previous calculation method? Or on the impacts
> relating to the energy systems that the new calculation method may lead to?
> I came across an USGBC resource that encourages the application of the
> Integrative Design process to meet the higher energy performance required
> by this update, which would mean to a large extent a higher effort relating
> to the passive energy and control systems. But I’m wondering if that is all
> that is likely to be involved.
>
> I’m also wondering how a significantly decarbonised energy grid as it is
> the case here in Sweden contributes to achieving the points for the credit,
> if anyone can comment on that.
>
>
>
> Thank you in advance!
>
>
>
> Best regards | Med vänliga hälsningar
>
>
>
> *Raquel Viula*
>
> Consultant Sustainable Building
>
> Hållbart Byggande Väst | Sustainable Building West
>
> Business Area Buildings
>
>
>
> AFRY
> ÅF Infrastructure AB
>
> P.O. Box 1551, SE-401 51 Göteborg
>
> Visit: Grafiska vägen 2 A, 412 63 Göteborg
> afry.com <https://afry.com/en> | LinkedIn
> <https://www.linkedin.com/company/afry/>
>
>
>
>
>
> ÅF and Pöyry have come together as AFRY.
> We don’t care much about making history. We care about making future.
>
>
>
> "This e-mail may contain confidential and corporate proprietary
> information. If received in error, kindly notify us immediately and delete
> the communication from your system. Our contacts with you may further
> involve processing of personal data. Please read more about how and why
> AFRY processes personal data on our website www.afry.com."
> _______________________________________________
> Bldg-sim mailing list
> Bldg-sim at lists.onebuilding.org
> http://lists.onebuilding.org/listinfo.cgi/bldg-sim-onebuilding.org
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.onebuilding.org/pipermail/bldg-sim-onebuilding.org/attachments/20250808/59fbfef8/attachment.htm>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: image001.png
Type: image/png
Size: 4143 bytes
Desc: not available
URL: <http://lists.onebuilding.org/pipermail/bldg-sim-onebuilding.org/attachments/20250808/59fbfef8/attachment.png>