Helios Energy Limited operates as an onshore oil and gas exploration company in the United States. It holds 70% working interest in the Presidio Oil project comprising 4 wells covering an area of approximately 17,850 gross acres located in Presidio County, Texas. The company was formerly known as New Horizon Coal Limited and changed its name to Helios Energy Limited in April 2010. Helios Energy Limited is headquartered in Subiaco, Australia.