Energy Efficiency
Energy efficiency involves a set of strategies that can be used to reduce the consumption of energy—especially fossil-fuel energy—in buildings. These strategies include:
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monitoring energy use
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improving building commissioning
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applying insights from building science
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selecting innovative HVAC and building envelope technology
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using natural ventilation and daylighting to provide low-cost alternatives to standard systems
Energy Efficiency
Deep Dives
Get up to speed on complex topics. You can also earn CEUs and download PDF Spotlight Reports.
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How IRA Can Take Ground-Source Heat Pumps Mainstream
Feature Article
Incentives in the Inflation Reduction Act help GSHPs pay for themselves faster than conventional HVAC systems—with far better performance.
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We Must Decarbonize Existing Buildings by 2050—but How?
Feature Article
Curbing carbon emissions requires that we address our vast stock of existing buildings. Here’s how to make the case and get it done.
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Is Using Smart Glass Smart?
Feature Article
Electrochromic glazing holds the promise of less glare and better energy efficiency with fewer attachments. The reality is much more complicated.
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Net-Zero Energy Isn’t the Real Goal: 8 Reasons Why
Feature Article
Net-zero-energy buildings don’t always reduce carbon emissions. These are the tweaks we need to ensure they do.
Quick Takes
Jump straight to the essentials with these short explanations of green building concepts.
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Building Decarbonization: Learn the Lingo
Explainer
Building decarbonization 101 for architects, engineers, and sustainability consultants cutting emissions from building materials and operations.
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Energy Performance: Learn the Lingo
Explainer
The AIA 2030 Commitment and many other programs require project teams to predict and report on energy use. Here are the key terms you’ll need to get the job done.
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Glazing Performance Metrics
Explainer
A few key metrics are important for understanding the thermal performance of glazing units used in curtainwalls and windows.
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Building Enclosure Commissioning: Ensuring Durable and Energy-Efficient Buildings
Explainer
The building envelope is crucial for all other building systems. How can we use commissioning to make sure it performs?
Product Guidance
Unbiased information from our product experts helps you separate green from greenwash.
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New Products from Greenbuild 2023: Part Two
Product Review
In part two of our Greenbuild expo product roundup, I’m covering CO2 heat pumps, a ground-source system heat pump system, agricultural fiber panels, construction equipment wash systems, and more.
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Blanket and Batt Insulation
Product Guide
Batts and aerogel blankets with high recycled content, reduced air-quality concerns, or superior performance
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Blown Insulation
Product Guide
Blown-in products with high recycled content, superior energy performance, and low-toxicity ingredients
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Board Insulation
Product Guide
These insulation products and thermal breaks provide superior thermal performance and avoid common chemical hazards.
In The News
We break news down to the essentials and provide expert analysis.
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USGBC Certifies First LEED v5 O+M Projects
News Brief
USGBC announces the first three projects certified under the new LEED v5 Operations & Maintenance (O+M) rating system, still in beta testing.
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Industry Aligns on Federal Zero-Emissions-Building Definition
News Brief
The federal government finalized its definition of a “zero-emissions building” in June of this year, and now major industry groups have formally announced their intentions to align with it.
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How to Use the Right Tools to Design for Climate Change
News Analysis
Weather files that help designers plan for climate change will soon be readily available. ASHRAE design conditions still lag.
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Be Prepared: The IRA Eliminates the Tech-Based ITC in Just Over a Year
News Analysis
Beginning in 2025, electricity-producing facilities will need to achieve zero emissions to claim the Investment Tax Credit, making the eligibility of several currently funded technologies uncertain.
Perspective
Thought-provoking opinions from the most trusted minds in sustainability.
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The Universal Low-Carbon Building Standard Avoids RECs and Unnecessary Complications
Op-Ed
RECs and carbon offsets lack credibility, and grid interactivity adds unnecessary complexity. That's why this standard leaves them out.
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The Universal Low-Carbon Building Standard Does Six Things
Op-Ed
Here’s how we’re going to deconstruct “net zero” and rebuild it as a comprehensive standard that applies to every building.
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R-10 Vacuum-Insulated Glazing
Blog Post
The technological challenges for high performance, vacuum-insulated glazing may have finally been surpassed, but the results are still under wraps.
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Installing Insulation With the X-Floc Ventilated Dry Injection System
Blog Post
X-Floc claims the blowing equipment they use delivers cellulose at a more consistent density, and they were willing to prove it with this demonstration.
Learning Resources
Syllabus supplements and CEU content, with automatic reporting for AIA and GBCI.
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The BuildingGreen Guide to Thermal Insulation
Special Report
The BuildingGreen Guide to Thermal Insulation, Fourth Edition, provides detailed guidance on insulation products and practices, including environmental and health comparisons, and recommendations on what insulation to use and what to avoid.
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We Must Decarbonize Existing Buildings by 2050—but How?
Feature Article
Curbing carbon emissions requires that we address our vast stock of existing buildings. Here’s how to make the case and get it done.
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Is Using Smart Glass Smart?
Feature Article
Electrochromic glazing holds the promise of less glare and better energy efficiency with fewer attachments. The reality is much more complicated.
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We Must Decarbonize Existing Buildings by 2050—but How?
Spotlight Report
