This book Basics of Electrical Power Systems is intended to serve as a ready reference for the beginners of Electrical and Electronics Engineering. It offers suggested guidelines for the transaction of the concepts tinted in the course content. It is expected that the learners achieve significant learning outcomes at the end of the course as envisaged in the curriculum if it is followed properly. We cannot express enough thanks to the management of CMR college of Engineering & Technology, Hyderabad, Telangana, India and our principal Major. Dr. V.A.Narayana.