HEATKEYS

Music, movies, TV, shows and now friends. Get connected on iTunes 10.

Build It Solar will help people with Do It Yourself skills build solar projects that save money and reduce pollution. It is a "hands-on" site with detailed plans for solar projects including solar space heating, water heating, passive sola...

Download all available Android apps in the Android Market for your Android device.

Photovoltaic applications, technologies and large-scale PV power plants

Reviews and free software downloads for Windows, Mac, Palm, Pocket PC, and Mobile Phones. The best programs and games. Buy software directly online.

Autodesk is a world leader in 3D design software for manufacturing, building, construction, engineering, and entertainment. Since introducing AutoCAD in 1982, Autodesk has developed a broad portfolio of 3D CAD software programs to help users visualiz...

The U.S. DOE Energy Efficiency and Renewable Energy Web site provides information on energy efficiency and renewable energy technologies.

This site includes lots of information that is time and date related, such as yearly and monthly calendars, countdown counters and the world clock which shows current time in cities all over the world.

How to avoid shadows on solar collectors and protect your solar investments; how to explore the solar energy potential of your site and optimize your solar project according to your local architecture conditions and regional climate characteristics.