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

Hi folks,

I wanted to let people know about this webinar--I've heard it's good. If you do catch it please let us know what you think. Jason has offered to do a private version for our Peer Networks as well--I'd love to know how interested people would be in that opportunity.

November 14, 2019 from noon to 1 PM Pacific Time

... Read more

The sheer number of building product certifications and labels is overwhelming, and even those experienced with green labels can get exhausted trying to figure out which are relevant and which aren’t.

The confusion in the market over green labels can complicate efforts of both manufacturers and design professionals... Read more

We are cautiously rekindling the age-old debate: how are we balancing modeling software for design /visualization and performance analysis during early phase of design.  

We are heavy SketchUp users for early design, and most of our staff have access to COVE tool for early performance analysis. Problem is, I’d rather use Revit to COVE... Read more

Little things make a big difference in MEP systems. Pumps, fans, ducts, and dampers are at the heart of performance.

BuildingGreen-Approved HVAC Accessories

We approve the best-in-class products in each category, including:

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

Air movement keeps occupants comfortable when it's warm, so cooling setpoints can be higher, and natural ventilation is a viable option even at higher temps and humidity.

BuildingGreen-Approved Ceiling Fans

BuildingGreen approves Energy Star-certified ceiling fans with ECMs—motors using electronic commutators.

Energy and... Read more

Hi all,

We are trying to encourage participation in take-back programs and using recyclable packaging with our vendors and I was wondering how we can add it to specifications. Does anyone have any examples on how we can add wording in specs about participation in take-back programs, using recyclable packaging and/or reducing non-... 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 wanted to share a program of superstars including many of you.  I look forward to electronically connecting and learning together.

Every Monday from June through August, the Boston Society for Architecture (BSA) and the Carbon Leadership Forum (CLF) Boston Hub will present Embodied Carbon 101, a 12-part program series in... Read more

Welcome to the quiz portion of Why High-Performance Assemblies and Why Now? (recorded webcast)

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


1. Understand how water moves on and through buildings.
2. Describe the details of continuous air, water, and thermal barriers and... Read more

Hi folks,

It came up on the Regional Leaders call this week that many people aren't aware that we added a link to the BuildingGreen Communities in footer of BuildingGreen.com. So if you want an easy way to get to the forum page, other than clicking on a link in an email, there it is! (Thank you, Stephen Endy!)

The footer has a... Read more

Hi all,

We're doing some tool-related soul searching at WRNS and some folks here have raised Cove.Tool as a potentially interesting addition to our library. I'm looking for any insight you all can provide. Cove has come up various times, but curious if there's been any change for the better/worse in the past few years.

Do you use... Read more

Now that Ben has set up access restrictions, we have to decide what message to put on "paywall" screens. For example, on the Best Practices pages, the "Official language" tab is fully accessible, but if an anonymous user clicks on any of the other tabs they'll hit a login wall:

https://live-bituser.pantheonsite.io/best-practice/energy-... Read more

Hello SMEPers,

I’m hoping to crowd source some anecdotes for a guest lecture I’ll be giving at Yale’s architecture school. The topic is integrated design (especially between architects and engineers) and how it enables better sustainability outcomes.

John Boecker has this great story about how choosing a paint color with higher... Read more

Hello SCL,

Version 2.0 of the Contractor's Commitment has officially been ratified with 33 "yes" votes out of 52 members. Congratulations, and a big thank you to everyone who helped move this forward--especilly Amanda Atkinson, who really took this project by the horns. 

You can find the updated version here.

Next, I'll be... Read more

HI MEP Leaders,

Related to our thread about equipment needed for decarbonization, I have a question about what new or improved equipment is already available now that you're excited about.

Every year we at BuildingGreen publish (and present at Greenbuild) a listing of the Top-10 new and exciting products. Our focus this year is on... Read more

Welcome to the quiz portion of Design for Adaptation: Living in a Climate-Changing World.

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

1. Identify the major known causes of climate change
2. Describe the range and reliability of predicted temperature changes.
3. List... Read more