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:

  • 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

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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  • Energy-Efficient Multifamily Housing

    Feature Article

    Now you can get LEED, Energy Star, and other labels for designing or retrofitting high-performance multifamily buildings.

  • Measuring Energy Use in Buildings: Do Our Metrics Really Add Up?

    Feature Article

    How much energy our buildings use matters a great deal, but figuring out how to measure that use and compare it from building to building is tricky. Here's a guide to key metrics and how to use them.

  • Retrocommissioning: Big Savings for Big Buildings

    Feature Article

    Retrocommissioning or RCx can be a valuable tool for commercial building owners. RCx addresses the same scope as new building commissioning but is performed on existing buildings. RCx can improve building performance, save energy and money-especially for large buildings.

  • Commercial Kitchens: Cooking Up Green Opportunities

    Feature Article

    Commercial kitchens run energy- and water-intensive equipment for long hours, sometimes even when not in use. While the challenges of saving water and energy in commercial kitchens are daunting, they're not insurmountable. Careful equipment selection and a commitment to conscientious kitchen practices can dramatically cut down on waste-and utility bills.

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.


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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