Make a Solar Water Heater for Under $5
This is a great way to learn about using the renewable energy of the sun to produce useful effects, in this case hot water. You can use these instructions to build a device that will actually heat enough water to use in the home, but it would require modifications.
fight4 solar panel said,
04/11/2007 at 5:20 PM
Something I find slightly comical is how so many people will say that it isn’t worth it to add
solar energy to your home because it takes too long for the system to “pay itself off”. If you
save up the money and have a system installed you suddenly have a tiny utility bill, if any
bill at all. To me it’s a simple cash-flow equation.