Esfahan Regional Electric Company (EREC) is located in the center of Iran, and its territory consists of Esfahan and Chaharmahal baktiyary provinces with 30 counties, 60 district, 122 cities, 151 rural districts and 3395 villages. The population under EREC management is about 5.6 million (as to March- 2010) and its area is123000 sq.km. After separation of electric distribution companies in October 2007, EREC's responsibility become generating and supplying electrical energy to heavy industries and distribution companies. Also via the central area operation dispatching (CAOC); EREC is guiding and exchanging energy with neighboring companies as Hamedan, Markazy, Kermanshah, Kordestan, Eelam and Lorestan provinces.