Green hydrogen is touted by some as the future – a way for Australia to slowly replace its reliance on fossil fuel exports. The energy-dense gas has the potential to reduce emissions in sectors challenging to decarbonise, such as steelmaking and fertiliser manufacturing.

The Albanese government wants it to be a massive new export industry and has laid out a pathway through its National Hydrogen Strategy.

Unfortunately, there’s a real gap between rhetoric and reality. Despite ambitious plans, no green hydrogen project has yet succeeded in Australia. The technology’s most prominent local backer, billionaire miner Twiggy Forrest, has dialled down his ambition. Globally, just 7% of announced green hydrogen projects are up and running.

Economic viability is one problem. But there’s a much larger issue flying under the radar: water. Hitting the 2050 target of 15 million to 30 million tonnes of hydrogen a year would use 7–15% of the amount Australia’s households, farms, mines and black coal power plants use annually. That’s simply not sustainable.

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