Quality electricity supply propels industrial growth and boosts economic development. Quality electricity supply goes beyond mere availability of electricity as it is commonly believe to be. This book examines the various elements of quality electricity supply. The book also discussed industrial performance as a whole and identified four (4) key performance indicators that industries measure. It then considered the impact that electricity has on industries and their performance citing cases of Africa, America, Europe, Middle East and Asia. It then identified six general areas that quality electricity supply could impact in any industry.