Is it really possible to use the sun to provide the home with all the hot water needed for an average family? Short answer is yes. It has been done and is currently being done in many parts of America. It is a deceivingly simple concept. Place solar conductors on the roof of the structure, have a circulating system to move the heated fluid between the conductors and a stoage tank, have a backup heating system, and controls to regulate the whole system.

In simple words, rain water tank is a large water storage tank to collect and utilize rain water. Water is a valuable resource. Rain water harvesting is popular means of utilizing the monsoon water instead of wasting it. Such water systems can then be used in household chores, washing clothes and dishes.