Energozapas gravitational power engineering

Modern global trends in power engineering increase the demand for energy storage systems

Energozapas Ltd. offers a ready-to-use solution for energy storage - Lifted Weight Storage (LWS) plant, which is comparable to Pumped Hydro Storage (PHS) plants in terms of economic performance but does not require use of water bodies or elevation differences.


Operating Principle

LWS operates in the same way as the PHS with the only one difference: while the PHS uses water, the LWS uses solid weights.
In the LWS plant, electric power is used to lift solid weights up to the height of a few hundred meters and is produced back when the weights go down under gravity.

Solution Key-Advantage

Today, many companies work on mechanical energy storage projects:

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In energy storage systems that use solid weights, the weight is the most expensive element. The weight used in the LWS plant is the packed soil excavated from the construction pit during LWS erection work. The structure of LWS comprises a set of vertical columns connected to each other by diagonal and horizontal braces forming a shaft with a solid weight vertically moved inside.

A combination of such solutions has made it possible to develop a flatland grid scale energy storage that can be built in places, where constructing a PHS could only be an economically viable alternative, if a landscape elevation or a natural water source was present.