Massive Hydrogen Project in Australia Raises Concerns Over Unique Cave Ecosystem

Massive Hydrogen Project in Australia Raises Concerns Over Unique Cave Ecosystem
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A proposed renewable energy megaproject on Australia’s Nullarbor Plain, set to become the world’s largest hydrogen export hub, is drawing concern from scientists over its potential impact on a fragile and unique cave ecosystem beneath the site, according to The Guardian.

The Western Green Energy Hub, spanning 2.2 million hectares in Western Australia, plans to install 3,000 wind turbines and 60 million solar panels, generating 70GW—surpassing the national grid. The project includes desalination plants, ammonia production, and infrastructure to support 8,000 workers, dwarfing nearby Eucla’s population.

Beneath the plain lies a vast limestone karst system of caves, dolines, and blowholes—home to rare, cave-adapted species like eyeless spiders and wasps, many yet to be scientifically described. The caves also preserve ancient fossils and climate records, including thylacine remains and megafauna skeletons.

Experts warn that construction could severely damage this fragile environment. Karst geomorphologist Dr. Susan White highlighted the limestone’s instability, while subterranean ecologist Dr. Stefan Eberhard stressed the need to protect the entire landscape, not just isolated features.

Project developers say mitigation strategies, such as buffer zones, are under discussion with regulators. However, scientists argue more research is needed before proceeding, urging careful assessment to preserve this globally significant natural heritage.