Solar water heating is a smart way to cut down on your monthly expenses for water heating and do your part to help reduce your output of carbon dioxide. Solar water heating is probably the most cost effective way to generate hot water because it employs the free energy of the sun. The sun is responsible for all life on Earth, and generates a tremendous amount of clean, renewable energy that largely goes unharnessed. The better we manage to utilize this energy, the higher our independency from fossil fuels, and the lower our emissions of greenhouse gases. Solar means green!