Interior luminaires often use inefficient, outdated technology such as compact fluorescent or halogen lamps, some of which contain mercury and have poor light quality and limited controls.

BuildingGreen-Approved Lighting

BuildingGreen lists lighting products using LEDs (light-emitting diodes) from manufacturers whose luminaires... Read more

Here's a file upload.

Hi everyone,

Thanks so much to all who filled out the Doodle poll for the Sages monthly call meeting time, and to those who have introduced themselves on the forum.

We’ll be going with Monday, March 11th at 4 pm ET for this next meeting, and I’ll be sending out a calendar invitation shortly. It’s been a tough call to make — we... Read more

Hey Gurus. Might anyone have experience, or thoughts, with regard to establishing an energy use baseline for a new advanced manufacturing facility we are working on for a regional technical community college? This type of academic facility is so relatively new, the program doesn't fall into the typical "College/University" building type from ... Read more

Has anyone done a LEED Homes and a NGBS certification and have insight into the differences, challenges, etc between the two?

Go to your profile, where you will find the TEAM MANAGEMENT section in the left side bar. Click on Team Members.

You can invite up to 9 more colleagues for a 10-person team to start their Premium Subscriber access through the Team.... 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

Dear all,

A mechanical engineer on a healthcare project we are working on has asked for help in dividing the ventilation calculations between ASHRAE Standards 170 and 62.1; can anyone here help shed some light on it?

"This is the first time I am working on LEED for a hospital and I am not sure how the template wants me to show... Read more

The 2018 ENR Green Building Survey is due March 16th.  I'm sure you all know the metric they use to evaluate your ranking is solely the revenue from projects pursuing a green building certification in the previous calendar year.  Personally, I think this totally bogus.  How "green" a contractor is may correlate with how much revenue they have... Read more

Are you or companies considering joining RE100? http://there100.org/going-100

"Companies joining RE100 make a global, public commitment to 100% renewable electricity.

To achieve this goal, they must match 100% of the electricity used across their global operations with electricity produced from renewable sources – biomass (... Read more

I know we have talked about this on various calls, so I wanted to post in case anyone hasn't seen that the IRS has provided an update with rules on how to access the direct pay option.

https://www.usgbc.org/articles/irs-issues-ira-tax-credit-rules-tax-exemp...

Has anyone seen a comparison between IECC 2021 and previous versions of the energy code, including ASHRAE 2010? I'm curious how far ahead code buildings are relative to LEED v4.0, and how much the latest IECC raises the bar relative to the previous. I did a quick search for the LBNL and other studies that look at this, but didn't see anything... Read more

This question of what equity looks like in project design is one I have been musing on for a while now, and I was excited that several of us were able to talk about it at the SDL Summer Summit earlier this month.  That conversation has prompted me to post here, asking what all of you think equity looks like in project design... with a few... Read more

Imagine folks have seen this, but thought it was worth bringing up: this study which shows the great need to build new renewable infrastructure to support electrification.

I've been in a few discussions with folks where we've discussed how electrification is objectively a good goal, but are we passing carbon from one source to another?... Read more

THIS WEBINAR PURCHASE AND REGISTRATION IS CLOSED.

Join Brent Ehrlich and Alex Wilson to learn about the ten most exciting green products for 2019. Every year for the past 17 years, BuildingGreen has selected ten green... Read more

Hi all,

I wanted to reach out to fellow MEP energy modeling teams to assess everyone's experience with the new PCI calculation methodology in 2016. It was a substantial change in how we show savings on projects. Big changes can often come with un-intended consequences. I'm all for pushing to higher efficiency - just want to make sure we... Read more