What Looks Like a Half-Built Building in China Is Actually a Giant Gravity-Powered Battery

Energy Vault’s EVx gravity battery system has been installed in Rudong, China.

It stores surplus electricity by lifting heavy blocks and recovers power as they descend in a controlled way.

The facility can deliver up to 25 MW for 4 hours, with 100 MWh of capacity and a reported 83% efficiency.

It offers an alternative to lithium batteries and pumped hydro, using no water and repurposing industrial waste to support renewable integration.