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　　Research believes that a kind of mountain gravity energy storage may surpass 18650 battery rechargeable energy storage

　　A recent study published in the academic journal Energy suggests that mountain gravity energy storage (MGES) may be a feasible way to store electrical energy for longer periods of time and on a larger scale. While electrochemical energy storage, mainly electric vehicle batteries, is booming, there are many dazzling forms of energy storage that are being developed or ready for commercial use.

　　A recent study published in the academic journal Energy suggests that mountain gravity energy storage (MGES) may be a feasible way to store electrical energy for longer periods of time and on a larger scale.

　　While electrochemical energy storage, mainly electric vehicle batteries, is booming, there are many dazzling forms of energy storage being developed or ready for commercial use. Like large-scale pumped hydro, mountain gravity energy storage (MGES) uses gravity potential energy as a means of energy storage. Research published by the International Institute for Applied Systems Analysis (IIASA) of the Austrian science group said that using mountains for energy storage could be combined with hydropower and be economically attractive for microgrids, islands and areas with high electricity costs.

　　Researchers pointed out that the operating principle of mountain gravity energy storage (MGES) is roughly like this: a motorized system similar to a ski lift can pull a container filled with sand to a crane on the top of the mountain, and then the sand is returned down the mountain due to gravity. , generating electricity in the process.

　　It is understood that the concept is similar to gravity energy storage technology proposed by Swiss company EnergyVault, which generates electricity by reducing the gravity of concrete blocks in towers. The company recently received more than $100 million in equity investment from SoftBank’s Vision Fund, which shows that gravity energy storage technology is indeed profitable.

　　Lithium-ion batteries are considered the fastest-growing type of energy storage, with utilities across the U.S. purchasing battery storage to support intermittent renewable energy. However, the time for energy storage to deploy energy is usually 4 hours or less, which is not enough to invest more and more solar and wind energy resources.

　　Daniel Finn-Foley of WoodMackenzie Energy Storage believes that lithium-ion batteries have "poor scalability" and that every time the life of a lithium-ion battery system is doubled, the cost will double. He said: “Under the regulations of many states, high-renewable energy grids require extremely long-term energy storage, which may take 10-20 hours to convert solar energy for use at night and cloudy days, and even weeks or even several days. The authors of the IIASA study believe that mountain gravity energy storage (MGES) offers the possibility of long-term energy storage in some areas.

　　Also using gravity potential energy, what is the difference between mountain gravity energy storage (MGES) and pumped hydro energy storage? First of all, pumped hydro storage is one of the most common and important energy storage methods at present. It is a long-term energy storage method. The storage time can be arranged from 6 to 20 hours. However, pumped hydro storage is limited by geographical location and high cost. . One of the benefits of the Mountain Gravitational Potential Energy (MGES) system is that the material is sand, etc., which is cheap, has no flood season, and will not evaporate, so this potential energy will never disappear and it can be used countless times. In addition, the height difference for pumped storage power stations is limited to 1,200 meters, while for mountain gravity energy storage (MGES) the height difference may exceed 5,000 meters.

　　Modeling for a study on the Hawaiian island of Molokai found that mountain gravity energy storage (MGES), wind, solar and battery storage could all meet the island's energy needs. Mountain gravity energy storage (MGES) plays a role in filling the gap between peak generation and short-term battery cycles.

　　Although there is currently no other storage technology that can surpass the "critical point" of lithium-ion batteries, various energy storage technologies are still being developed, and there are different opinions. No one knows who the king of the future energy storage world will be. As Jason Burwen, vice president of the Energy Storage Association, said, "There are so many potential energy storage technologies being developed now that you can't predict which energy storage technology will dominate the market in the next 20 years."

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