Synergy plans $4.5b wind, solar and battery farm in WA's Wheatbelt
The state-owned utility needs to replace the generation capacity it will lose by closing down all its coal-fired power stations over the next four years.
A critical mineral is an element essential for modern technologies, economies or national security, and there is a risk its supply chain could be disrupted.
Extraction of the critical mineral found in the waste from making alumina from bauxite could curb China's 98 per cent share of global production.
Production tax credits for hydrogen and critical minerals are set to be law after Labor struck a deal with the Greens.
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