There’s nothing that says you need to pay a gas company or electric company in order to use the energy of the world around us! In this video, we see a simple design for a solar oven that uses very cheap materials and could easily be done in an afternoon. The only downside to it is that your cooking time will be increased significantly versus conventional methods. As long as you have the patience to wait 30 minutes for your egg (watch at 3:45 for the result) to cook in the morning sun, this solar oven is for you.
In this video you’ll see another example of how we can utilize the untapped power of the sun. I once saw a similar system for heating an in-ground pool without relying wholly on propane and thought it was quite clever. In this instance you’ll see how recycled materials and even something as simple as an aquarium water pump can be used to get amazing results. One of the things I liked most about this video is the section on improvements to the design. Watch at 2:38 to see these, and enjoy your freely heated water!