Curved, trough-shaped reflectors concentrate solar energy and direct it onto a receiver pipe in this arrangement. In a steam ...

Finding a discarded offset-focus DirecTV dish, he glued a grid of 230 inch-square mirror tiles to it and set to investigating the concentrated solar energy at its focus. Cotton waste ...

Learn more › We have had a few inconvenient power outages here in Upstate New York, which has made our solar generator extremely useful. I can plug in our router and my laptop to keep telling ...