JPS_V3_N1_RevP1 Surendranatha Reddy M. Journal on Power Systems Engineering 2322–0376 3 1 33 44 Adaptive Method, Flexible Method, Smart Grid (SG), Smart Power Grid (SPG), Intelligent Utility Networks (IUNs) Smart Power Grids (SPGs), also known as Intelligent Utility Networks (IUNs), explains a new model in electrical power distribution and management including advanced two-way communications and distributed computing capabilities. SPGs are emerging power grids to improve control, efficiency, reliability and safety. A smart electric power grid increases the ability of a computing device to connect to other device and organizes all generating plants, the networks and consumers to work together efficiently. This paper describes the generation, transmission and distribution parts of the grid. These parts are nonlinear, non-stationary stochastic systems and have become too complicated for humans to operate safely during severely changing conditions, as experienced during sudden terrible disasters.. In addition, high power electronic switches have found application in power networks but the high switching speeds of these devices put the power grid in extreme danger and requires methods to overcome these. Due to these disturbances and difficulties of power grid Adaptive and Flexible methods can impsone a grid in many ways. Some applications, as well as some ideas of smart grids, are described. February – April 2015 Copyright © 2015 i-manager publications. All rights reserved. i-manager Publications http://www.imanagerpublications.com/Article.aspx?ArticleId=3358