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Energy system can refer to: 1  Electric power system, for supply, transmission and consumption of electric power. 2  Thermodynamic system, a physics concept for analysis of thermal energy exchange. 3  Bioenergetic systems, metabolic processes for converting energy in living organisms.
1 Electrical-Electrical energy is generated by the movement of electrons. 2  Gravitational-Large objects such as the Earth and the Sun create gravity and gravitational energy. 3  Heat-Heat energy is also called thermal energy. 4  It comes from molecules of different temperatures interacting. 5  Light-Light is called radiant energy.