Hello, 

I am struggling with understanding if I should be using Annual Marginal Emission Factors (MEF) or Annual Average Emission Factors (AEF) for evaluating different building design decisions.

Everything I know is from this document. So as I understand it ... an individual building or retrofit is going to change the marginal... Read more

Hi Sustainability Leaders,

(Note: this post was edited to correct Jen's affiliation and to add Rob Winstead.) Please join me and the BuildingGreen team in congratulating the Peer Network members of the USGBC 2023 Class of LEED Fellows!

Geoffrey Brock, IPS-Integrated Project Services, SCL

Heather DeGrella, Opsis... Read more

Currently, the BIT User site is fully accessible without having to log in (unless you want to edit or add content, of course). The time has come, however, to start restricting access only to logged-in users.

Which sections will be freely visible, and which will be visible only to registered users? Here's what I recall from our earlier... Read more

Extremely proud to say that the just-announced winner of the international 'Next Generation Facade' design competition is a team led by the 2017-18 EDR Research Fellow, Liz McCormick.   The facade normally separates inside from outside. What if the 'facade' was a place you occupied, where you worked? What if different parts of the facade... Read more

Hi All,

Attached are the meeting notes from the Carbon Group's 2/26/20 -- also in the PDF are the slides presented in the 2/26 meeting.

Before our next meeting in late March/early April, we are looking for input on the following topic related to tracking and reporting carbon:

Welcome to the quiz portion of Lighting Design for Health and Sustainability: A Guide for Architects​!

Learning Objectives
Upon completing this course, participants will be able to:


Describe how high-quality lighting design dovetails with sustainability by improving energy efficiency and supporting occupant health and... Read more

Has anyone worked with Vidaris for LEED certification and have a contact there? If you want to direct email me with feedback on the experience that would be helpful as well.

Hi all,

We're seeing more interest and desire for outdoor work spaces, and as we consider the design implications around working outdoors, teams have been asking about wind comfort. We've tested Ingrid Cloud and now SimScale. I'm curious if anyone would recommend any other CFD tools that are geared toward architects? Also curious if... Read more

Hello Green Gurus,

On October 5th a number of Sustainable Design Leaders gathered for the Fall 2021 SDL Virtual Summit and the BuildingGreen team is happy to now share with you all the event report here!

This report can be shared publicly. If you think someone would like to see it, such as firm leadership or prospective Peer... Read more

Was anyone else surprised to see ASHRAE 228-2023 using eGRID Subregions for both the Regional Electricity Source Energy Conversion Factor and Regional Electricity Greenhouse Gas Emission Factors? In the past I have used eGRID sub-regions but also State and local utility conversion factors depending on what energy or operational carbon story I... Read more

I'm exploring the use of phase change material for a project. Specifically, looking at the BioPCM/ENRG Blanket product. I see on their website that ZGF used it at University of Washington. I'd love to hear any feedback from folks who have used it, and more specifically how your energy model and MEP engineer accounted for it. Thanks!! https://... Read more

THIS WEBINAR PURCHASE AND REGISTRATION IS CLOSED.

Why high-performance assemblies? And why now? Today we demand better thermal performance from our building assemblies than ever. But higher performance... Read more

Hi Green Commons,

It’s been eerily quiet here since Tuesday night. I’ve been quiet mostly because I just didn’t know what to say. The election results are certainly a blow to pretty much everything we’ve been working for. There is so much we don’t know about things might play out, but I’m feeling a range of emotions ranging from... Read more

Hi all -

I got this yesterday from Renew Oregon, a credible environmental NGO here in the state.

"A secretive special interest group has filed a petition at the Federal Energy Regulatory Commission (FERC) to take “net metering” rules away from states and make it a federal issue.  Net metering is the program that allows homes and... Read more

Is everyone else having trouble with a dysfunctionally slow LEED-Online today (i.e., worse than the usual incredibly slow performance)?

Fellow Sages,

I was at an interesting lecture last night. Phil Bernstein (formerly of Autodesk, now at Yale) was speaking (in Lawrence, Kansas, at the U of Kansas) about AI and design/AEC ... you may know that he authored the 2022 book, Machine Learning, about AI and the AEC field. 

Phil has a very interesting posture about AI... Read more