Korea Electric Power Corporation, an integrated electric utility company, generates, transmits, and distributes electricity in Korea and internationally. The company operates through Transmission and Distribution, Electric Power Generation (Nuclear), Electric Power Generation (Non-Nuclear), Plant Maintenance & Engineering Service, and Others segments. It generates power from nuclear, coal, oil, liquefied natural gas, internal combustion, hydro, wind, solar, and biomass sources. As of December 31, 2015, the company had a total of 618 generation units, including nuclear, thermal, hydroelectric, and internal combustion units with an installed generation capacity of 73,282 megawatts. Its transmission system consisted of 33,316 circuit kilometers of lines of 765 kilovolts and others, including high-voltage direct current lines, as well as 822 substations with an installed transformer capacity of 298,294 megavolt-amperes; and distribution system consisted of 110,082 megavolt-amperes of transformer capacity and 8,960,818 units of support with a total line length of 465,278 circuit kilometers. The company provides electricity to residential, commercial, educational, industrial, agricultural, street lighting, and overnight power usage. It is also involved in providing plant maintenance and engineering services, and information services; selling nuclear fuel; and communication line leasing activities, as well as developing uranium mine. Korea Electric Power Corporation was founded in 1961 and is headquartered in Naju, South Korea.