Sixty organisations across the world are vying for a role in the development of South Australia's new $593 million hydrogen power plant.
A market-sounding process, calling for proposals from industry on the technical, systems and the commercial development of the hydrogen facility has closed.
The submissions came from global operators with experience in developing hydrogen infrastructure, companies with links to local industry and local workforces, and organisations that partner with universities for research, training and development.
The government's hydrogen power project was a key election promise, with Labor arguing it would accelerate SA's hydrogen industry and unlock a $20 billion pipeline of renewable energy projects.
"It is clear our bold vision for hydrogen has captured the imagination of the world," Premier Peter Malinauskas said.
"The high interest leaves little doubt that the green hydrogen industry in South Australia is on the up and up.
"We have positioned our state as a world leader in renewable energy, and the green hydrogen industry is the next step as we head towards net zero carbon emissions."
SA's recently established Office of Hydrogen Power will use the submissions to inform the future procurement processes and final site selection for the project, slated for somewhere on the state's upper Spencer Gulf.