Solar Thermal Microgeneration may be used to reduce your hot water bill, fossil fuel use, and lower your carbon footprint. For water heating, water is collected from solar panels. It is used to heat the water, as it filters through the water heater. Some areas require all new homes to provide an energy rating to buyers. Solar thermal panels harness the suns energy and reducing the need for fossil fuels to heat water. You will need the combination of solar panels, a traditional water heater, and a solar manifold. You will still need a traditional water heater, in the event that there is insufficient light to heat the water or there is a temporary increase in your usage. But, this will reduce your overall need for a traditional water heater.