The major purpose of this article is to know about solar energy. Solar energy and wind power are in the contest for our expectations. The problem of which is improved was bound to come up. There are advantages to equally and also disadvantages with equally. The principal disadvantage for both is the towering expenditure of producing it. Coal leftovers by far the cheapest technique to make energy. But if you calculate the expenditure of the building and preservation it could effort if the effort is increase out over a number of years.