Well you should actually know that ENERGY CAN NEITHER BE CREATED NOR BE DESTROYED .I t only changes from one form to other. e.g. solar to electric energy conversion by a solar cell, chemical to electric energy conversion by a battery cell.This is Law of Conservation of Energy.

Nothing really creates energy. Without getting into wave-particle duality, we can say there's always been the same amount of energy in the universe. Different things just convert energy from one form to another.

Solar energy from Sun

There are many what do you want ?

sun is the main source of energy.

Sun,water, the fuel.