Numerical modeling and solution on digital computers is the only realistic approach to systems analysis and planning studies for a present day power system with its large size, complex and integrated nature. The stage has, therefore, been reached where an undergraduate must be taught in the latest techniques of analysis of large-scale power systems.. This textbook is designed to present an extensive coverage of the power system topics with detaiuled case studies, examples and solutions manual for undergraduate audience who needs some basic information before moving forward to power system analysis part.