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Former Queensland gold mine converted into a 250-megawatt pumped-hydro battery

Two former open pits in far north Queensland have been linked through an underground powerhouse to create a 250-megawatt battery. The system can begin operating in under 30 seconds.

By DoomRadar · Published on DoomRadar .

Why it matters

The project adds rapidly dispatchable energy storage and demonstrates reuse of major mining infrastructure.

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  1. Australia's largest gold mine closed in 2001 and left two open pits in far north Queensland, and engineers have now filled them with water and joined them through an underground powerhouse, so the holes the miners dug work as a 250-megawatt battery that starts in under 30 seconds ↗spacedaily.com · Recorded source date: Sep 6, 2026, 7:16 AM UTC

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