The aim of this unit is to instill confidence and understanding of those concepts of power system analysis that are likely to be encountered in the study and practice of electrical power engineering. The approach is to develop the thinking process of the student in reaching a sound understanding of a broad range of topics in the power-system area of electrical engineering. Calculation of unbalanced fault conditions, methods of symmetrical components, the admittance model and network calculations, the impedance model and network calculations, Thévenin's theorem, load flow solutions, the Gauss-Seidel method, the Newton-Raphson method, power flow studies in system design and operation, SKM Power Tools application for load flow analysis, fault calculation using the bus impedance matrix, the equal-area criterion for transient stability analysis, economic operation of power systems, unit commitment, state estimation of power systems, reliability analysis of power systems. It is highly recommended for students to have a background in power systems..