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 Dashboards: Using Real-Time Feedback to Influence Behavior

    Feature Article

    Real-time feedback on energy use can change occupant behavior and save energy. Several products now on the market provide this feedback in varying degrees of complexity.

  • Counting Carbon: Understanding Carbon Footprints of Buildings

    Feature Article

    Everyone seems to be talking about measuring carbon footprints and designing carbon-neutral buildings, but these terms mean different things to different people. Some focus just on operating energy, while others also look at transportation, materials, and other building-related emissions. As with so many things, the results depend on what you count and how you count it.

  • The Challenge of Existing Homes: Retrofitting for Dramatic Energy Savings

    Feature Article

    Greenhouse gas emissions associated with residential energy use account for a fifth of all emissions in the U.S. Retrofitting existing houses to achieve a two- to three-fold reduction in energy use is necessary if we are to achieve the emissions reductions scientists say are required for avoiding catastrophic climate change. Here's a look at how it can be done.

  • Piping in Perspective: Selecting Pipe for Plumbing in Buildings

    Feature Article

    Potable water supply piping and drain-waste-vent piping represent a significant fraction of a building's materials. Choosing the greenest pipe for both applications, particularly deciding between metal pipe and plastic alternatives, requires evaluating a variety of environmental and human health impacts as well as durability and performance issues.

Quick Takes

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


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Product Guidance

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In The News

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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

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