Underground Hydrogen Storage Workshop Report

Australia is making progress towards becoming a renewable energy superpower, which not only enables the opportunity to decarbonise the economy, but also increases clean energy exports which will also contribute to regional and global decarbonisation efforts. However, most renewable energy sources are intermittent and not always available when needed. For example, the sun is not always shining, and the wind is not always blowing. Hydrogen energy has been confirmed as an important energy carrier to balance the energy demand and supply. Therefore, large-scale hydrogen storage is important.

Underground Hydrogen Storage(UHS) (e.g., lined rock, salt caverns, and depleted gas reservoirs) offers a solution. However, more quantitative work remains to be conducted to improve its technical, economic and social viability. More importantly, it requires a field scale demonstration and implementation prior to commercialisation.

This industry-led workshop aimed to identify current state-of-the-art knowledge gaps and uncertainties against the industry demonstration and implementation of UHS within Australia. The workshop focused on the storage integrity and storage performance of porous media with intentions to identify and discuss subsurface properties and processes which may impact field scale development. The workshop provided a forum for collaboration and discussion on the way-forward for validation and demonstration of UHS as a commercially competitive storage option.

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