Gravity Batteries: An Energy Transition Solution to Renewables

Gravity Batteries : an alternative to the challenges Faced

Gravity batteries are a great alternative to one of the most critical problems about our energy transition to renewable energy: how to store it, and engineers are racing to find an answer. Without a mechanism to store the energy, anything that is not used right away is wasted because the electricity produced by wind and solar energy farms is not available when the sun is not shining or the wind is not blowing. With the rising oil prices and the increased global energy industry investments the requirement for this technology is high in the market.

This new area of energy storage technology is, in theory, extremely straightforward because it is based on Newton’s unchangeable logic—what goes up must come down. Use green energy when it is available to lift a massive weight to a specific height. Release the load when there are no more renewable energy sources available by using gravity to drive a generator. 

Solution to Energy Transition: Gravity Batteries

Gravity Batteries - A Energy Transition Solution to Renewables

The solution might be gravity batteries. The concept is straightforward: when there is an abundance of renewable energy, the batteries use the energy to hoist a heavy object either very high in the air or to the top of a deep shaft. When power is required, winches progressively reduce the weight and generate electricity as the cables move.

Since gravity batteries contain mechanical devices, they are liable to malfunction. Perhaps a cable breaks, the gearbox becomes stuck, or a rusty spot shows up. Although these problems are troubling, they really aren’t lethal because individual parts can usually be changed. This “reparability” means gravity batteries can last as long as 50 years. This would imply that power generated by a solar farm on a day when the sun rises could be stored and then released to the grid at night when demand increases due to people staying home and consuming energy for things like cooking, watching TV, and heating their houses. This technology is of great use in the era of renewable sources of energy with components like floating wind turbine, solar energy, wind turbine (history of wind turbines), hydraulic turbine, etc. The offshore wind energy investments are also predicted to reach high in upcoming years.

In the port of Leith, close to Edinburgh, the UK business Gravitricity has been testing a prototype gravity battery. It is a 15-meter steel tower that lifts two 25-ton weights on steel wires using solar-powered motors. The motors transform into generators and discharge electricity as the weights are decreased. The demonstration had a capacity of 250kW, which could, albeit briefly, power 750 dwellings. The fact that we can give full power in just a second was confirmed, though, and that is useful for operators who must balance the grid second by second. It is very adaptable because it can also give big amounts more gradually.

Renewable energy can be stored using lithium-ion batteries, which now account for the majority of sales, and also green hydrogen, which some experts prefer. Its also used in the low carbon emission – electric vehicles (EV). However, gravity is free, unpolluted, and simple to obtain, without the difficulties of creating hydrogen or the environmental issues and human rights associated with some lithium mining. Although it will still be a few years before gravity batteries can provide entire power systems engineering, the technology is developing swiftly. The gravity systems are more resilient to capacity loss than lithium-ion batteries after years of charging and recharging. 

A number of businesses are attempting to expand in the power and energy industry on the idea of pumped hydro, which entails pumping water uphill when power is abundant and allowing it start flowing down again eventually to operate the turbines of a hydroelectric generator (hydraulic turbine). One such company is Gravitricity. According to the International Hydropower Association, pumped hydro produces with over 90% of the globe’s high-capacity energy storage, in contrast to gravity batteries. However, facilities are expensive to construct and geographically constrained because the technology needs hills and access to water.

One cannot predict how many of these will materialize. There is no denying that the world needs innovative and daring climate environmental management solutions. There are no magic solutions on this front, but gravity batteries, with their use of an essentially limitless, all-pervasive force, very likely have a part to play. Dubai: A Sustainable and Smart City to live in, has been focusing to developing a sustainable future by making smart buildings in UAE and energy efficiency in UAE. RSE FZE helps in creating a sustainable future by providing forged mechanical products and power engineering solutions. We have made a good reputation in the forging industry (forging vs casting)with different types of forging methods like open die forgings). We are located in UAE and to learn more about us, send us a message and we will contact you as soon as possible.


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