Old windows can be leaky and uncomfortable, but window replacements are expensive and resource-intensive.

BuildingGreen-Approved Interior Window Panels

BuildingGreen approves interior window panels with robust warranties that are designed to achieve improved thermal performance with both reduced... Read more

We apologize, but the heating fuel cost calculator is no longer on the BuildingGreen website.

Take a look at Efficiency Maine's heating fuel cost calculator instead.

I'm hoping for some help answering the question of whether buildings/communities should pursue net-zero energy on site versus investing in new renewable energy (i.e. through the electric utility) that can be built at a more efficient scale elsewhere in the state. Our utility is asking us this question as we are working through how to get the... Read more

Hi SDL Group - 

Our firm has been presented with a potential opportunity to share with USGBC National Representatives details about a few of our voiced concerns in the context of specific project administration efforts.

For us, these relate to two specific factors:

Does adding solar panels reduce a building's EUI?

Existing operational use of a building is 80 kBtu/sf/year. When we add solar, it will change the source of energy but does not change the usage.

My understanding is that the EUI does not change, but it would be good to hear from others.

It's energy consumption at the point... Read more

Welcome to the quiz portion of Occupant Engagement: Where Design Meets Performance.

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


1. Restate at least five methods being used to provide feedback to occupants so that they better understand how to interpret, and respond to, their... Read more

Is anyone else working on a project doing Living Building Challenge v4.0 Energy Petal? We're working through the Imperative 08 Net Positive Carbon Resiliency Strategy requirements that ask for the project to be habitable for a week in the event of an emergency. We're curious how others are defining "habitable" and what systems assumptions... Read more

Hello Gurus,

I am working with an owner who is making zero-carbon commitments and wants to explore setting carbon budgets in their capital plan (and subsequently their individual projects). We will be starting exploratory discussions next week and I was hoping some of you might have been working with other owners who have already... Read more

Huge shout out to Patty Lloyd, Luke Leung, Janet Olsen, and Sarah Gudeman for their webinar on the Power of Peer Networks. They share lots of insights into the value of participating in BG Peer Networks and many others. Ten bucks to Illinois Green gets you access to the recording--I loved it. What would you have said that they didn't?

We've got a great private (BG Communities/SD Leaders) webinar lined up for December. Register now to get it on your calendar. And let us know if you have suggestions or requests for future webinar topics!

Register here

Topic: Organizing Sustainability: knowledge management as the key to high performance

Description: Corey... Read more

Is there a list of which number corresponds with each Best Practice? E.g. "03 Energy Audit & Planning."

Hello! Long shot here, but I thought I would try.

Alex Wilson and I are working on an article about priorities for the next four years under the Biden-Harris administration. We'd like to feature some recent photos of climate demonstrations, protest signs calling for the Green New Deal, or other environment-focused illustrations of... Read more

What is the lag time for historical embodied carbon data catching up with real-time information as manufacturers source renewable energy? Is our professional time best spent calculating with out-of-date information or more simply calling for manufacturers' elimination of fossil fuel combustion in their production and transportation of materials... Read more

A site license allows your entire organization to access and share the guide, and to keep a copy in your library.  

We’re excited to be releasing the 2020 edition of Spec This, Not That. 

... Read more

Jake Gehrung