A new solar and wind hydrogen plant, which has been dubbed the largest in the world, has been proposed for Crystal Brook in South Australia's Mid North.

The Labor Government has committed $25 million in grants and loans to renewable energy company, Neoen, to finalise plans and — pending development approvals — commence construction of a Hydrogen Superhub.

The French company also owns and operates the Hornsdale Wind Farm in Jamestown, SA, the site of the Tesla lithium-ion battery.

If approved for construction, the site will create up to 260 jobs during the planning and construction phase, with 40 ongoing positions once the site is operational.

The Crystal Brook facility will produce up to 400 megawatts of solar and wind power each day, which will power the site's hydrogen 'electrolyser' to potentially produce 20,000 kilograms of hydrogen daily.

The SA Government has said that exporting the hydrogen products created at the plant to markets in Asia was a possibility.

SA Energy Minister, Tom Koutsantonis said that new hydrogen projects would create economic benefits for the state and placed South Australia as a world leader in hydrogen production.

"Our Hydrogen Roadmap has laid the groundwork for South Australia to become a world leader in the emerging hydrogen production industry, and to benefit from the economic opportunities likely to flow from it," he said.

"More renewable energy means cheaper power, and I'm pleased the State Government can partner with Neoen to once again develop a world-leading renewable energy and storage project following the construction of the Tesla battery at Jamestown."

Franck Woitiez, the managing director of Neoen's Australian operations said the project would supply SA with renewable energy and would benefit other Australian states.

"It has the potential to reach beyond our electricity grids, and supply South Australia's locally produced clean energy to other states and to our nearby trading partners," he said.

Project to complement SA regional energy projects

The proposed Crystal Brook complex is one of multiple renewable energy projects across regional South Australia.

Developments in solar generation are underway in Port Augusta, Tailem Bend and in the Upper Spencer Gulf.

A 15MW hydrogen and ammonia production facility is also set to be constructed near Port Lincoln.