Leigh Creek Energy Limited operates as an energy company in Australia. The company explores for coal and synthesis gas comprising methane, hydrogen, and carbon monoxide. It focuses on developing the Leigh Creek Energy project located to the north of Adelaide, South Australia. The company also operates energy markets, including National Electricity Market, South Australia Electricity Market, and National Wholesale Gas Markets. The company was formerly known as Marathon Resources Limited and changed its name to Leigh Creek Energy Limited in August 2015. Leigh Creek Energy Limited is headquartered in Adelaide, Australia.