what is energy?

this is my first entry..ngee~~~
I want to discuss about energy today..what do you know about energy?..
From what I know, energy is a conserved quantity, that is, the total amount of energy in the universe is a constant. Energy is not created or destroyed but just converted or redistributed from one form to another. such as from wind energy into electrical energy, or from chemical energy into heat.

Energy is the key ingredient to any activity. Adequacy of energy supply is important for acceleration of economic development and to facilitate our daily activity. Consumption of energy however produces some undesirable impact on the environment and climate.

In Malaysia, the largest energy resource is petroleum. This resource is a non-renewable energy and being actively exploited. If we do not take any action from now, Malaysia might experience shortage of energy when this source finished or lesser.  Therefore, we need to find another energy resource that suitable to replace petroleum as a dominant energy source.