Just so you know.....

Water heating is a major energy consumer. Although the energy consumed daily is often less than for air conditioning or heating, it is required year round, making it a good application of solar energy.

    How does Solar Water Heating work? 

Cold water is moved via a pump from a water tank and travels through solar collectors in a solar panel. In the process, it is heated up by the power of the sun hitting the solar collectors. This heat is then carried away from the solar collectors by the water returning to a heated storage tank.  An auxiliary system will kick in when more hot water is needed. Auxiliary systems run on conventional energy, such as gas or electricity. A controller component regulates the pumping action of the water.