JSC Georgian State Electrosystem (GSE) is the single Electricity Transmission System Operator . The company owns and operates 4 357 km transmission lines and 93 substations all over the country. Transmission network is managed by the National Dispatch Center and its technical maintenance is provided by the 4 regional networks (Eastern, Western, Southern and Kakheti). GSE also manages the cross-border transmission lines interconnecting with the neighboring countries: Russia, Turkey, Armenia and Azerbaijan.