K&O Energy Group Inc., together with its subsidiaries, engages in the development, production, supply, and sale of natural gas and iodine in Japan. It is also involved in the supply and sale of city gas, LP gas, compressed natural gas, brine water, gas equipment, and electricity; production and sale of iodine compounds; and provision of civil engineering, plumbing, well drilling, geological and water quality surveys, digging of geothermal wells, and gas fitting services. The company was incorporated in 2014 and is headquartered in Mobara, Japan.