A - ONE SOLAR SYSTEM Solar Energy brought to you with the distinct advantage of giving you value for money, Solar heating Systems which will give you not only peace of mind but also cost advantage. Solar water heater heats water by tapping the solar energy into a flat plate collector. The heated water is stored in an insulated tank made of a special grade stainless steel to meet hot water requirement on days made of sunshine, electrical heating element with thermostat control is provided inside the tank.