A concrete “battery” could be the future of energy storage. Energy Vault, a Swiss startup, has created a way to store electricity in concrete blocks. The technology helps use solar power when sun doesn't shine and wind power when the wind doesn't blow. It's a low-tech alternative to lithium-ion batteries.
There’s been a lot of progress in renewable energy with solar and wind power, but renewable energy storage remains a challenge. Energy Vault’s idea is similar to hydroelectric power, but instead of using water and dams, it uses concrete blocks and cranes. The low-cost, low-tech solution is proof that some of the answers to our energy-storage problems may be hiding in plain sight.
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