A well-connected U.S. firm is using China as a proving ground for its technology that aims to store renewable energy.
Energy Vault's 'Gravity Energy Storage System (GESS)' under construction in Rudong, China, as of September 2023. Credit: Energy Vault
In early November, Energy Vault, a California-based energy storage firm, announced an expansion in China with five new projects deploying the company’s improbable technology: lifting 50,000 pound blocks high in the air to store energy.
That system, a type of what’s called ‘gravity storage,’ is one of many nascent technologies seeking to remedy renewable power’s big drawback: its intermittency. As more wind and solar power is used to power the grid, there is an increasing need global
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