[2] Power worked for Mount Isa Mines for 23 years, eventually becoming head of its gold division and then general manager of its subsidiary Oaky Creek Coal.
[2] Power succeeded company founder Andrew Forrest as CEO of Fortescue Metals Group (FMG) in July 2011, after a period as chief operating officer.
[2] According to The Australian Financial Review, he "steered the company through a near death experience in 2012, when a heavy debt burden pushed it perilously close to the brink, and oversaw a massive operational expansion which cemented its place as the world's fourth-largest iron ore producer".
He has since taken up an appointment as chair of Perth Airport Pty Ltd.[1] In September 2019 he joined the board of Strike Energy, an oil and gas exploration firm, of which he is a major shareholder.
[1] In March 2020, Prime Minister Scott Morrison nominated Power to chair the National COVID-19 Commission Advisory Board, created in response to the COVID-19 pandemic.