H3 Energy Limited engages in the exploration, development, and production of oil and gas properties in Australia and Canada. The company holds 100% interests in the Warro Gas Project situated in north of Perth, Western Australia, as well as in the Wizard Lake Oil Field located in Alberta, Canada. It also engages in the development of hydrogen hub in Queensland; and hydrocarbon, hydrogen, helium exploration in South Australia. The company was formerly known as Whitebark Energy Limited and changed its name to H3 Energy Limited in December 2025 . H3 Energy Limited is based in Adelaide, Australia.