Critical One Energy Inc., an upstream mining and exploration company, focuses on sustainable uranium production activities in Namibia and Canada. It holds interest in the Kenora Uranium project located in the Kenora, Ontario; and the Rossing North Uranium project located in the Erongo Province, Namibia. The company was formerly known as Madison Metals Inc. and changed its name to Critical One Energy Inc. in December 2024. Critical One Energy Inc. was incorporated in 2019 and is headquartered in Toronto, Canada.