The interaction between electrical power and electrical equipment is commonly known as power quality. It is an essential parameter of fitness of electricity networks. With expanding renewable energy generations and utilization of power electronics converters, it is essential to examine how these developments will have an influence on existing and future electricity networks. This book, therefore, presents readers with an update of power quality issues in all areas of the network, such as, generation, transmission, distribution and end user, and talks about some practical solutions.