The Cold Volt energy storage system is a gravity-based energy storage.

The fundamental principle of gravity-based energy storage systems lies in harnessing the potential energy of elevated masses to store and release power. These innovative systems capitalize on the gravitational force, which pulls objects towards the Earth. Potential energy is stored by lifting a weight and transformed into kinetic energy by lowering the weight.  The formula for potential energy is PE = Mass x Height x the acceleration due to gravity.  A weight that is twice as heavy can store twice as much potential energy.  Weight that is lifted two times as high can also store twice as much energy.

During periods of excess electricity generation or low demand, the surplus energy is used to elevate heavy objects, such as large concrete blocks or water, to higher altitudes. The potential energy accumulated in the elevated mass is stored until needed. When electricity demand exceeds supply, the stored energy is released by lowering the elevated mass, converting the potential energy back into electricity through various mechanisms like turbines or generators.

This process offers a reliable and flexible method of energy storage, enabling the smooth integration of intermittent renewable energy sources into the grid and helping to balance supply and demand efficiently. Gravity-based energy storage systems have the advantage of long-term storage potential, scalability, and comparatively lower environmental impact, making them a promising solution in the quest for sustainable energy storage.