This module is designed to enable students understand the concept of energy conversion, structure and function of power stations, and environmental effects of energy resources. In addition, the principles of magnetic circuits, excitation in single phase transformer, voltage regulation, losses and efficiency, auto-transformation are introduced. It also presents the principles of electromechanical energy conversion, DC generators, DC motors, three phase transformers, polarity, and standard terminal marking, parallel operation, and all-day efficiency. It also addresses the principles of AC machines, Synchronous machine, electro motive force (emf) equivalent circuit, power equation, and distribution of electric power.