"Using the power of the sun to heat your water is one of the simplest ways that you can make your home more energy efficient. Heating water usually accounts for 40 percent of an average family's monthly energy costs. Converting to inexpensive solar thermal water heating is a great first step that will not only allow us to utilize a much more clean, affordable and sustainable source of energy, it will also create jobs and help our nation to become more energy independent." (Quoted from article)