The power flow is a basic tool of power system analysis that is required knowledge for anyone who wants to work in this field. In this introductory course, review the basic principles of power flows with emphasis on applications to practical steady-state analysis. Learn how to model various types of power system equipment, and how the modeling of such equipment influence power flow solution performance and results. Learn about various methods for solving the power flow, the intrinsic characteristics and when to apply them, especially in ill-conditioned cases. Then, apply the power flow to typical power system problems, including contingency analysis, voltage control and reactive power analysis, and transfer analysis. Fill in your knowledge base of practical power flow analysis techniques and applications in a short course that is suited to today’s needs.