“For a class project I decided to try making a low cost PV (photovoltaic) tracker. Being able to follow the sun’s path through the sky can raise your

“My solar tracking mirror array or “death ray” as it is affectionately referred to by my friends is actually a heliostat. A heliostat is technically any device that

“Solar energy can be used to heat your home in several ways including this easy DIY solution. The idea here is to put solar box window heaters in

“With electricity costs rising more and more each year, a lot of people are thinking in investing into solar panels for their home to cut down on the

“I’m going to say it straight off the bat; I’m a greenie. I love my bike above all other modes of transport, our Earth is going to hell

“Consider ways to increase self reliance and reduce your power bill by using alternative means of powering appliances. The efficiency of most micro-hydro generators ranges from 30–70%. They

“This is a nicely done undershot water wheel project that blends in well with its setting. Much of the project was done with parts recycled from various sources. I utilize

Solar Powered Refrigerator Freezer – Average power use 30 watts! (740 watts a day) can be run on a single solar panel (and 2 batteries)! Kenmore ‘Freezer Fridge’ has a

“Unconventional energy – Sure, you’ve heard of wind and solar power, biofuels, hydroelectric, tidal and wave power, but Mother Nature provides an endless bounty of alternative energy sources beyond

I built a solar water heating system. In this video I show you how I built the water heating solar panels. My current system of twenty panels have

This would have to be one of the best documentaries about the potential of solar power. The simple fact is the sun could easily provide the planet with

“Hydro-electricity is fundamentally the combination of water flow and vertical drop (commonly called “head”). Vertical drop creates pressure, and the continuous flow of water in a hydro system

This short video will show you several options to creating your own methane biodigester… “Today, we’re gonna bring you into the world of bio-gas digestion. The whole idea

“After building a couple of reasonably successful alternators out of wood, I thought it would be fun to make one utilizing steel behind the magnets, and some sort

Here’s a great little tutorial on creating a 1,000 watt wind turbine. “We built a 1000 watt wind turbine to help charge the battery bank that powers our

Need some serious solar power? Here’s how to convert an old junk TV into a 2000ºF solar cooker. It’s a technique for hacking a 4 foot mega magnifying lens

In this era where everyone’s searching for innovative ways to harness the sun’s energy, the makers of Blight, a solar venetian blind, deserve some recognition. This solar blind

What if we could live in a clean world? A world in which energy would be 100% renewable, water no longer polluted, transportation truly green and production methods

This is VERY VERY cool… “Here’s how to build a photo-bioreactor that uses algae to convert carbon dioxide and sunlight into energy. The energy that is produced is

This is an excellent example of up-cycling old stuff and creating something really practical & useful from it… “After our first attempt at a home built proof of