Alliance to Save Energy (ASE)
http://www.ase.org - Promotes energy efficiency worldwide to achieve a healthier economy, cleaner environment and energy security. See Topics in top tool bar, for information on different aspects of energy efficiency.
http://www.aceee.org - Dedicated to advancing energy-efficiancy as a means of promoting both economic prosperity and environmental protection. See consumer resources for stats on home energy savings, job calculator, and links.
*For more information, see Articles, Books, and Industry Overviews, in this guide. Search Terms: energy conservation, energy consumption, energy efficiency, green buildings, heat storage.