Tae-Go Koo

Ko-one Energy Service Co., Ltd. engages in the distribution of liquefied natural gas (LNG). Its main business areas include Steam Supply and Power Generation, CNG(Compressed Natural Gas), Gas Cooling, and Solar Power Generation. The company was founded on July 7, 1978 and is headquartered in Seoul, South Korea.

Busan City Gas Co., Ltd. engages in the production and distribution of gas in Busan. It operates through the following businesses: City Gas, District Energy, Compressed Natural Gas, Small-Scale Co-Generation, Energy Diagnosis, Gas Cooling and Heating, and Real Estate Rental. The City Gas business offers transportation and supply of liquefied natural gas through pipelines. The District Energy business includes production and sale of heat and electricity from concentrated energy production facilities. The Compressed Natural Gas business offers substitution for diesel fueled vehicles. The Small-Scale Co-Generation business produces both heat and energy, utilizing natural gas. The Energy Diagnosis business provides heat diagnosis and electricity diagnosis for heavy energy consumers. The Gas Cooling and Heating business provides cooling and heating utilizing natural gas instead of electricity. The company was founded on March 4, 1981 and is headquartered in Busan, South Korea.

SK E&S Co. Ltd. provides liquefied petroleum gas and electric power generation services. It serves liquefied natural gas, power business, district heating, city gas, renewable energy and global business sectors. The company was founded on January 1999 and is headquartered in Seoul, South Korea.

Founded in 1984, Kangwon City Gas Co., Ltd. is a South Korean gas distribution company that provides a gas distribution system to serve the city of Chunchon.

Part of SK, Inc., Chungcheong Energy Service Co., Ltd. engages in producing liquid hydrocarbons from oil and gas field gases.

Chonnam City Gas Co., Ltd. produces and supplies gas. The company was founded on October 17, 1983 and is headquartered in Suncheon, South Korea.

Part of SK, Inc., Jeonbuk Energy Service Co., Ltd. distributes gas.

Yeongnam Energy Service Co., Ltd. distibutes liquefied natural gas to residential and commercials areas of North Gyeongsang Province. Its main business areas are town gas, compressed natural gas, cooling gas, fuel cell. The company was founded in March 20, 1986 and is headquartered in Pohang, South Korea.

Part of Hana Financial Group, Inc., Pyeongtaek Energy Service Co., Ltd. provides electric services through LNG power generation. The company is based in Pyungtaek, South Korea.