A combined heat and power generation (CHP) process is an energy transformation that converts energy simultaneously to electrical energy and thermal energy.
Energy transfer is an energy transformation in form of a spatial transmission, that does not change the types of energies, apart from losses, e.g. waste heat.
A gas turbine process is an energy transformation that converts chemical energy into rotational energy using a continous internal combustion process. A gas turbine is participating in a gas turbine process.
A power-to-fuel process is an energy transformation that converts electrical energy to chemical energy by synthesising portions of matter into a synthetic fuel.
A steam-electric process is an energy transformation that converts thermal energy to electrical energy. A steam turbine and an electro motive generator are participating in a steam-electric process.
A water electrolysis process is an energy transformation that uses an electric current to decompose water into hydrogen and oxygen gas. Electrical energy is converted into chemical energy (and waste heat).