solarray

Edward Sylvester Morse patented his air heater in 1881. It is still a great design with a versatile vent system. A simple glazed box on ...

I did some video of my solar projects with Werner Grundl of VideoSphere and http://energyvision.blogspot.com . He's is adding to his vi...

My bedroom is now basically off-grid. For years my bedside radio has been a solar/dynamo flashlight/radio. This particular one has been mod...