Answer
When energy is converted from one form to another, the amount of energy in the initial state exceeds the amount of energy in the final state. The difference is the energy lost in the energy conversion.
Work Step by Step
Energy conversion is the process of changing energy from one form to another. The law of conservation of energy states that energy can neither be created nor destroyed. While it may appear that energy is lost when it is converted from one form to another, in reality the difference in energy actually represents a 3rd type of energy that is a byproduct of the energy conversion.