The use of solar heat energy as we know it today is just another way of saying that man has finally recognized the use of an energy source that has been around for billions of years. Actually, forever. Yes, we are talking about the Sun. And, solar energy is simply the use of the sun’s rays that reach the earth every single day. Now, we get to enjoy the sun’s rays for free, but capturing those rays for energy use is not so free. Hopefully, man will soon think of a way in which the cost of solar energy being installed can be reduced.