- American Council for an Energy Efficient Economy - ACEEE is a non-profit research agency focusing on energy efficiency in the areas of national energy policy, economic development, utilities, transportation, buildings, appliances & equipment industry and international programs.
- Automatic Environmental Controls Ltd - AEC Monitor, control and save energy in Hotels, Colleges and Residential or Commercial sites.
- Backlund Home Page - Energy efficient house design, construction, renovation and retrofit. Small scale forestry. Woodlot association.
- Building Technologies Program - DOE lab, energy efficient building technologies research
- CalTech Engineering Computer systems to control energy-use in food storage plants. Nitrogen systems to maintain food freshness and for pest control.
- Clean Energy Campaign see our web site, courtesy of EcoMall, under Activism
- Compressors - Manufacturer of pre-cooling systems for air compressors energy savings up to 30%.
- David Rezachek's Home Page - Private citizen/Energy and Environmental Consultant/Personal Rights Activist
- DOE Energy Efficiency & Renewable Energy Network
- Eastar Lighting: LED Lights - Manufactures energy efficient light emitting diodes (LED) light bulbs for residential, commercial, retail and architectural applications.
- Ecoterm - Ingenieria energetica - Engineering consulting on energy efficiency for industry and services
- ENER-G Combined Heat and Power - Our commitment and dedication to the technology means we are the number one name in the cogeneration business across Europe.
- ENER-G Sustainable Technologies - ENER-G Sustainable Technologies provides renewable energy systems, such as ground source heat pumps and solar thermal, to deliver substantial savings in energy and carbon emissions for commercial applications.
- Energy Efficiency and Renewable Resources Under Electric Industry Restructuring - Definitive source documents and discussion forums on electric industry restructuring in the US and Canada.
- Energy Efficient Environments, Inc. is a mail-order company specializing in energy saving and environmentally friendly products. Dedicated to the preservation or the earth's natural resources.
- Energy Efficient Housing in Canada
- Energy Efficient LED Lighting - Modern Lighting Concepts sells a wide array of energy efficient LED lighting products.
- Energy Efficient Window Coverings - Choose from a huge selection of energy efficient window coverings at Blindsgalore. We've assembled the following selection of thermal window coverings that will add energy efficiency to your home, helping you to lower your heating and cooling bills. Save on energy efficient window coverings at Blindsgalore with discount prices, free shipping & samples.
- E Source Home Page - E Source's web site includes abstracts for our publications on energy efficiency issues, and information on our membership services.
- Florida Design Initiative - The Florida Design Initiative is a non-profit organization dedicated to promoting energy efficiency in building design, construction, and management.
- The Green Deal - The Green Deal Hub aims to raise awareness, give information and provide links and opportunities regarding the government's Green Deal scheme. It gives UK consumers the chance to enable energy efficient improvements to their homes or businesses. Green deal is about improving energy efficiency and also aiming to reduce carbon emissions of homes.
- John Bedini's Collection Of Free Energy Machines - It's My own collection of work done in this field for past 25 years.
- ME3's Sustainable Minnesota - Minnesotans for an Energy Efficient Economy (ME3) is a leader in advancing sound energy policies
- Ohio Department of Development Office of Energy Efficiency - State Energy and Weatherization Office, providing services and programs for many sectors of the Ohio's population.
- Phoenix Energy Systems Inc. - Manufacturers of patented advanced Heat Recovery systems using Heat Pump Technology.
- Residential Energy Efficiency Database - R.E.E.D. provides its users with the most current and usable residential energy efficiency and air quality information available.
- University College Dublin - Energy Research Group is based in the School of Architecture in the Faculty of Engineering and Architecture, of University College Dublin. Since 1975, ERG has undertaken research, development, consultancy, education and dissemination activities on energy utilization in buildings and climate-sensitive architectural design.
- uSave LED - LED manufacturer with headquarters in Boca Raton, Florida offering energy efficient lighting solutions for most commercial applications.
- World Energy Efficiency Association - WEEA is a private, non-profit organization.