Green Gravity takes on Energy Vault with old mine shafts to generate clean energy - The Australian Financial Review

Leonardo DiCaprio’s gravity energy start-up is now worth $US2 billion, but a BHP alumnus reckons his tweak on the same concept could be the real blockbuster.

The concept is similar to the one Energy Vault and other start-ups have pursued, but Swinnerton believes the use of old mine shafts, rather than purpose-built tall towers, will be his competitive adv… [+4177 chars]

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