This course introduces students to the workings of basic electrical circuits leading to the generation of electricity. It presents the definition and modelling of circuit components. The courses involved here include : Electricity supply types: definition and characteristics of AC and DC voltages and currents, instantaneous, average and RMS values, energy and power, and simple billing calculations of household appliances. AC power: active, reactive, and apparent power, power factor and correction methods. Introduction to electricity generation and sources. AC transmission and distribution for 1-phase, 2-phase, and 3-phase. Introduction to transformers and operations. Introduction to motors. Electrical safety.