The Sun, Wind, Water & Tides in the sea are natural sources of energy on earth. For our energy requirement the world should depend on these renewable resources of energy. These forms of energy do not pollute the environment. Wind on earth is available in abundant. Wind energy can be used in every village & town to cater to there needs of energy. Where coast line is available there Tidal energy from sea should be promoted. This practice would save our environment from pollution.