Energy Vault

Energy Vault lifts 35 ton composite bricks to form a giant tower. Energy is stored in the elevation gain, which can be released back into the grid on demand by lowering the blocks back to ground level. Compared to incumbent stationary energy storage solutions – most notably chemical batteries – Energy Vault provides a sustainable alternative that does not degrade over the life of the project and has competitive performance with round-trip efficiency between 80 to 90%.