gravity batteries

A startup company called Energy Vault is developing a system that uses gravity to store renewable energy generated by wind and solar panels. The system works by hoisting hundreds of large 24-ton bricks made of compressed dirt up the side of a ... building. It hoists the gigantic brick batteries using energy previously generated by solar panels or wind turbines, then stores them inside the structure. (Source: cnet.com ) When power is needed, the bricks are lowered, spinning electrical power generators in the process. The bricks are abundant and cheap to make, and replace the need to purchase ... (view more)