From：CTECHI GROUP Limited Release time：2019-02-20
Overview：Today, the industry has reached a broad consensus that the world will deploy more grid-level energy storage systems in the next few years, but few people know exactly how much capacity to deploy. In a recent survey released by industry media GTM Research, a new prediction is made that the capacity of global lithium-ion battery energy storage systems will increase by 55% annually in the next five years. In other words, the lithium-ion battery energy storage system will increase by more than eight times from 2 gigawatt hours in 2017 to 18 gigawatt hours in 2022.
Today, the industry has reached a broad consensus that the world will deploy more grid-level energy storage systems in the next few years, but few people know exactly how much capacity to deploy.
In a recent survey released by industry media GTM Research, a new prediction is made that the capacity of global lithium-ion battery energy storage systems will increase by 55% annually in the next five years. In other words, the lithium-ion battery energy storage system will increase by more than eight times from 2 gigawatt hours in 2017 to 18 gigawatt hours in 2022.
This growth started on a small scale, compared with 112 gigawatt-hour battery demand for electric vehicle sales in 2017. However, with an annual growth rate of 55%, grid-level energy storage systems will be sufficient to improve and change the performance of global electrical systems.
The United States will continue to take the lead in battery energy storage system deployment, followed by China, Japan and Australia. Investments in the US states now include early battery energy storage projects, market reforms and energy storage regulations, and will yield greater results in the coming years.
Although U.S. grid planning varies greatly from state to state, this pioneering work enables states to follow up faster and more effectively. The centralized policies formulated by China, Korea and other countries can make the battery energy storage system develop rapidly.
A series of interrelated trends make it possible to accelerate the deployment of battery energy storage systems. The market demand of electric vehicle batteries has stimulated the large-scale expansion of battery production facilities, thus reducing the cost of batteries for grid applications.
At the same time, the laboratory research of related technology continues to improve energy density by using the best combination of anode, cathode and electrolyte materials. Once electric vehicles have been on the road for many years, the waste batteries they generate will become inexpensive second-hand fixed battery energy storage devices.
So far, the cost of energy storage systems has limited their use in power grids, except in a few exceptional cases. As costs fall sharply, its broader use cases will become attractive. In the same period, the growth trend of wind and solar energy will increase the asset value of energy storage system.
The problem then becomes the impact of the influx of battery energy storage systems on the rest of the grid.
For example, Australia's first large battery storage system has lowered the price of its key grid services market. According to a study released last year, by 2025, the battery energy storage system deployed in Australia will begin to replace new and existing natural gas power plants, and then challenge natural gas power plants that generate large amounts of electricity by 2035.
California legislators plan to phase out fossil fuel-based electricity by 2045, in which case battery energy storage system manufacturers will surely become the main suppliers of flexible capacity.
Whether deployment and cost reduction of battery energy storage systems can help decarbonization at a cost-free rate is another matter, but this trend at least points the right way.
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