Stacked blocks energy storage Belarus

Could concrete blocks be the most expensive part of a Energy Tower?

Concrete blocks could potentially be the most expensive component in an Energy Tower. Although concrete is cheaper than alternatives like lithium-ion batteries, Energy Vault would need a large quantity of concrete to construct hundreds of 35-metric-ton blocks. So Pedretti explored another solution.

How efficient is a concrete stacking system?

The round-trip efficiency of the system, from stacking to unstacking, is about 85% — roughly on par with lithium-ion batteries, which offer up to 90%. Stacking concrete blocks. Photo: Energy Vault The idea seems quite simple once you see it.

Can you store green energy in giant concrete blocks?

Finding green energy when the winds are calm and the skies are cloudy has been a challenge. Storing it in giant concrete blocks could be the answer. The Commercial Demonstration Unit lifts blocks weighing 35 tons each. Photograph: Giovanni Frondoni In a Swiss valley, an unusual multi-armed crane lifts two 35-ton concrete blocks high into the air.

How are concrete blocks stacked?

The concrete blocks are slowly hoisted upwards by motors powered with electricity from the Swiss power grid. For a few seconds they hang in the warm September air, then the steel cables holding the blocks start to unspool and they begin their slow descent to join the few dozen similar blocks stacked at the foot of the tower.