Energy Efficiency

Our buildings consume more energy than industry or transportation, and we haven’t done a great job of reducing that consumption. We can do better by:

  • monitoring energy use

  • improving building commissioning

  • applying insights from building science

  • selecting innovative HVAC and building envelope technology

  • using natural ventilation and daylighting to provide low-cost alternatives to standard systems

As great as all these ideas are, they won’t be nearly as effective if we don’t engage occupants about energy use as well. Our articles look at all these strategies and more.

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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  • Greening Your Electricity

    Feature Article

    Many businesses and homeowners are choosing to buy green power, including renewable energy credits (RECs). This article examines the environmental benefits of green power, including on-site renewables, what REC buyers should know about their purchases, and investing in energy conservation.

  • Measurement and Verification: Monitoring Building Systems for Optimal Performance

    Feature Article

    Tracking the performance of a building's mechanical and electrical systems is essential for energy savings that persist over time. In this article, EBN explores measurement and verification and explains why demand for these systems is growing. We also explain the LEED® Rating System's evolving treatment of M&V.

  • The Water We Drink: Softeners, Filters, and Other Treatment Options

    Feature Article

    Although our nation's tap water is among the best in the world, most Americans are concerned about its quality. This article explores the range of technologies to treat real and perceived water-quality problems.

  • How Six Affordable Housing Projects Got to Green

    Feature Short

    Stories of designers and developers who overcame the challenges of building affordable housing that is also green, sustainable, and healthy.

Quick Takes

Jump straight to the essentials with these short explanations of green building concepts.


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Product Guidance

Unbiased information from our product experts helps you separate green from greenwash.


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  • Pentadyne GTX: Backup Power from a Flywheel

    Product Review

    The Pentadyne GTX supplies short-term power, without the use of lead-acid batteries, to cover the time between a power anomaly and the start of the generator.

  • Heat-Pump Water Heaters Ready for Prime Time

    Product Review

    Heat-pump water heaters offer significantly greater water heating efficiency than conventional electric water heaters. EBN takes a look at three new products, along with two existing products and one that is expected out soon.

  • Navien Condensing Tankless Water Heaters

    Product Review

    Navien's demand water heaters use conventional and condensing stainless steel heat exchangers to produce hot water with an industry-best 0.98 energy factor.

  • Hypewatch: Energy Savings Claims from Power Conditioning Equipment

    Product Review

    Power conditioning devices often promise across-the-board energy savings, but the claims don't hold up in practice. These devices are good, however, for solving specific power quality problems.

In The News

We break news down to the essentials and provide expert analysis.


Perspective

Thought-provoking opinions from the most trusted minds in sustainability.


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Learning Resources

A wide range of education options, with automatic reporting for AIA and GBCI.


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Just For Fun

Something weird happens every April at BuildingGreen...


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