India starts building giant gravity batteries

The list of renewable energy sources available to us is constantly expanding. Soon it will be supplemented by a new technology for obtaining and storing electricity based on gravity.

Energy Vault, based in California and Nevada, has just announced its first customers, Indian energy giant Tata and Mexican construction company CEMEX, to purchase its hydroelectric gravity towers without water.

Its function is performed by massive concrete bricks. When there is excess energy, they rise upward, followed by a controlled fall, during which a generator is activated to generate electricity. According to representatives of Energy Vault, the system is capable of storing from 10 to 35 MWh.

The complete travel cycle of concrete bricks provides 90 percent energy storage efficiency. Another advantage of gravity towers is their versatility - they can be placed almost anywhere where there is a piece of land and open space.