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The world of renewables this week

Energy Vault has been given $110 million by SoftBank’s Vision Fund to fully develop its gravity storage idea – take it from a partial scale demo to two full installations. Energy Vault literally uses cranes to build huge skyscraper-high piles of 35 ton concrete bricks, where the crane either uses energy to take the blocks upwards, or gives off electrical energy by using the crane as a turbine as it lowers them. It is a US idea that came out of the Idealab incubator and it built its demonstrator project in Switzerland. A full stack will be able to deliver energy at a rate of 4 MWp and hold 35 MWh of energy, at a capex price of $200 per…

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