Energy transformation

Fire is an example of energy transformation from chemical energy stored in the fuel into heat and light.
Energy transformation using Energy Systems Language

Energy transformation, also known as energy conversion, is the process of changing energy from one form to another. In physics, energy is a quantity that provides the capacity to perform work (e.g. lifting an object) or provides heat. Energy can be converted to different forms or transferred to a different location or object or living being, but it cannot be created or destroyed.