The academy is equipped to simulate the workplace and includes disability access and parent and prayer rooms.
BHP also operates a Future Fit academy in Mackay in Central Queensland.
The academies offer paid training pathways into the mining industry.
The Perth academy was officially opened by BHP Australia president Geraldine Slattery and replaces the previous academy in Welshpool.
Slattery said the first Future Fit academy was launched in 2020 with a $300 million commitment to create a pipeline of future talent in highly skilled roles, to help support productivity and keep the Australian economy strong.
"Minerals and mining are critical to Australia's economy and the global energy transition," she said.
"We have an enormous opportunity but also challenges to overcome to keep competing in the global arena, among them the need to build the skills needed in a modern mining sector."
The Forrestfield centre offers expanded curriculum, including high-risk work licensing, maintenance associate and trade programs in auto electrical, fabrication mechanical fitting and heavy diesel.
Slattery said more than 1100 people had gone through the program with more than 500 graduates getting permanent jobs with BHP.
"Through an innovative approach to training and employment, we've opened the door to a more diverse talent pool, especially people from non-mining backgrounds who want to reskill or pursue a new career," she said.
"Our new BHP Future Fit academy in Perth will provide an even better learning experience for the next wave of Australia's tradespeople, technicians and maintenance professionals."