As population increases the needs of housing, electricity, motor cars will also increase. This means that more and more of fossil fuels which generate the much needed energy to power homes and a variety of other things that use energy will have to be increased. This energy resource has to be limited in use and conserved for the future so we will have to look at alternate sources of energy generation like bio gas, solar power, wind power etc to meet the growing needs of the people. Looking for alternate sources of power will help not only in less worry for countries all over the world but it will also be able to conserve the fast depleting fossil fuel energy resources. Since the heat of the sun and wind are natural resources and cannot be depleted, they are the best alternates to meet the needs of the growing population. The over dependence on non renewable resources of energy has made consumers of energy look out for alternate sources of renewable energy. Two different energy alternatives to fossil fuels are solar energy and wind energy. These are alternatives because they are freely available and are non exhaustible. Population increase can be easily countered by using these alternates.