This presentation talks about non conventional energy sources. First of all the presentation gives a clear definition about energy and different forms of energy. It then moves on to the explanation of different forms of non-conventional energy forms explained one by one beginning with solar energy, its applications, its advantages and disadvantages. After this it moves on to wind energy, its applications, advantages and disadvantages. The next topic includes the application of bio-mass energy, its advantages and disadvantages, then the tidal energy and its applications, its advantages and disadvantages. Following this is the fuel cell energy , its application, advantages and