Energy Design Resources is funded by California utility customers under the auspices of the California Public Utilities Commission.
A wealth of information about energy-efficient building practices is available in EDR's Design Briefs, Design Guidelines, Case Studies, and Technology Overviews.
EDR offers a wide range of software tools for building energy simulation, commissioning, equipment specification, and more.
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Follow the links here to find other sources of energy efficiency information online.
A listing of all EDR resources.