The proposed H2TAS renewable hydrogen project, to be based in the Bell Bay Advanced Manufacturing Zone, was one of seven projects shortlisted for funding last July.

The seven projects were pulled from 32 expressions of interest to the Australian Renewable Energy Agency's Renewable Hydrogen Deployment Funding Round.

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In the end, two two projects in Western, worth a combined $71.2 million, and a Victorian project, worth $32.1 million, received funding.

The Bell Bay project involves production of hydrogen for domestic use.

Woodside Energy and Countrywide Renewable Energy are behind the project.

Bell Bay Advanced Manufacturing Zone chief executive Susie Bower said government support was not critical to Woodside's project, but the company had previously said no support would slow progress.

She said Fortescue Metals was forging ahead with its project and was due to make an investment decision on that project in June. "If that is a positive decision, they will start construction in January 2022," she said.

Origin and Able Energy are still working through feasibility studies for hydrogen projects based at Bell Bay.

Ms Bower said these companies would be at least 18 months away from deciding whether they would proceed with any projects.

"I'm very confident about a hydrogen future in Tasmania," she said.