Solar water heater use the sun energy to heat water during the day. This hot water is stored inside an insulated solar hot water tank for use whenever required. The sun rays have enough energy to heat water up to 55°C to 70°C which is more than sufficient for bathing and washing purpose in bathrooms and kitchen.
With no maintenance requirement, solar heater provides a low cost long term solution to getting hot water. For cloudy days, solar water heater have a inbuilt electric heating element for backup. Basically, solar water heater do conversion of sunlight into renewable energy for water heating using a solar thermal collector.