Energy storage power station opens the era of GWh

Energy storage power station opens the era of GWh

Recently, Guoxuan Hi-Tech and Wanneng Co., Ltd. signed a strategic cooperation agreement. The two parties will carry out strategic cooperation on energy storage power stations, new energy projects, green power transactions, and comprehensive energy services. Here is aboutTOP 5 electric energy storage lithium battery companies to know.
 
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The energy storage market is booming

The two parties agreed to further improve the information exchange and coordination and liaison mechanism, and use their respective advantages to jointly develop new energy projects such as photovoltaic + energy storage, wind power + energy storage.If you want to know more, see Top 10 solar battery manufacturers .In home applications, many families typically use PowerWall for energy storage. The video below introduces PowerWall in detail.

In fact, as early as January this year, Hefei Guoxuan, a wholly-owned subsidiary of Guoxuan Hi-Tech, has successfully won the bid for Wanneng Power’s “Huaibei Waneng Energy Storage Power Station Phase I (103MW/206MWh) General Contracting Project”. Responsible for the DC side battery energy storage system of the project, marking the start of cooperation between the two parties in the field of new energy.

Use their respective advantages to jointly develop new energy projects such as photovoltaic + energy storage, wind power + energy storage

The announcement shows that the overall construction scale of the project is 1GWh, and the construction period is 270 days. After completion, it will become the grid-side lithium iron phosphate energy storage power station with the largest single capacity in China.

Not long ago, Huining Times, in which CATL holds 51% of the shares, completed the filing of the project “Huining Times Jiangmen (Taishan) Nuclear Storage Complementary Electrochemical Energy Storage Power Station” jointly invested by China General Nuclear Power Sales Co., Ltd.

The scale of the project is 1.3GW/2.6GWh, with a total investment of about 6 billion RMB. It is planned to officially start construction in October 2022 and put into operation in October 2023. After completion, it will be the largest electrochemical energy storage power station in the world.

It is not difficult to see that with the booming energy storage market, the scale of electrochemical energy storage power plants has jumped from MWh to GWh level, showing a trend of centralized and large-scale development.

Looking back on 2021, the Three Gorges Group issued the announcement of the EPC general contracting of the new generation grid-friendly green power station demonstration project in Ulanqab, Inner Mongolia, with a total capacity of 2 million kilowatts.
Among them, 1.7 million kilowatts of wind power, 300,000 kilowatts of photovoltaic power generation, and a supporting energy storage system of 550MW/1100MWh.

Zhongtian Technology signed a strategic cooperation agreement with Three Gorges Power, and plans to set up a special class to jointly promote the construction of Rudong 500MW/1000MWh shared energy storage power station, which is planned to be connected to the grid in December this year. Last year, the trend of GWh-level energy storage power stations can be seen, and the logic behind it is self-evident.

The scale of electrochemical energy storage power plants has jumped from MWh to GWh level

Energy storage as a key technology to support supporting demand rises

With the global energy transformation, the installed capacity and power generation of new energy sources are rising rapidly. Data show that from 2015 to 2021, China’s non-fossil energy installed capacity will increase from 480 million kilowatts to 1.12 billion kilowatts, with a CAGR of 15.1%, and the proportion of the country’s total installed power generation will jump from 31.5% to 47.1%.

However, new energy power generation has strong volatility and unpredictability, so there is a rigid demand for energy storage facilities. At present, mechanical energy storage and electrochemical energy storage are the most widely used. Among them, pumped hydro energy storage (belonging to mechanical energy storage) was the first to be promoted globally due to its mature technology and low cost, and the cumulative installed capacity in the world from 2000 to 2020 accounted for 90.3%.

However, as the proportion of renewable energy on the energy supply side continues to increase, the disadvantages of pumped hydro storage are increasingly prominent, such as being limited by geographical location, its adjustment capability is difficult to support distributed scenarios, and its adjustment speed is difficult to match the rapid response of the power grid.

Electrochemical energy storage has the advantages of flexible installation, rapid response, accurate adjustment, and short construction period, which can effectively adapt to the needs of energy supply transformation. Therefore, its market space is rapidly opening up, and the supporting demand is increasing day by day.

Coupled with the continuous introduction of high-ratio and high-duration policy guidance, electrochemical energy storage power plants have become an important part and key technical support for the transformation and development of China’s power system.

Since 2021, 20 provinces have required the allocation of energy storage, and the allocation ratio is basically not less than 10%, of which Henan and Shaanxi require 20%; most of the allocation time is 2 hours, of which the market-oriented grid-connected projects in Hebei require 3 hours.

Energy storage as a key technology to support supporting demand rises

Technological changes drive energy storage power stations into the GWh era

Similar to the development logic of power batteries, the continuously expanding application scale drives the continuous change of technologies, and new products and technologies such as large batteries, high voltage, and water-cooling liquid cooling are gradually entering the market. The energy storage system continues to evolve towards large capacity, and the individual capacity of energy storage power stations continues to increase.

For example, in the aspect of large batteries, in 2020, the 280Ah energy storage special batteries known as 8,000 cycle life in CATL began mass production; Haichen New Energy has supplied 280Ah energy storage cells to Huaneng; BYD’s 320Ah energy storage cells will also be available soon.

In terms of liquid-cooling technology, companies such as CATL and Envision Energy have accelerated the deployment of liquid-cooled energy storage technology. By greatly reducing the battery temperature difference, the stability, efficiency and service life of the battery system are improved, and the deployment density per unit space is also increased.

In addition, in terms of module integration, the latest CTP battery packs, blade batteries and JTM integration technologies launched by CATL, BYD and Guoxuan Hi-Tech can effectively improve the energy density of batteries. In the future, it is expected to be popularized in the field of energy storage and further increase the single capacity of energy storage power stations.

in terms of module integration, the latest CTP battery packs

Shared energy storage is in the ascendant, forcing capacity increase

Since June 2019, energy storage has been moved to the grid side for unified dispatch by the grid, and shared energy storage has emerged. Compared with conventional energy storage projects, shared energy storage can not only increase the utilization frequency of energy storage facilities and reduce the unit cost of use by sharing infrastructure with multiple parties, it can also enhance the ability of the grid to cope with extreme conditions such as peaks and troughs, and ensure the smooth operation of the grid. Its economic and social benefits are remarkable, and it has become one of the main modes of energy storage development.

Up to now, more than 80 shared energy storage projects have been filed or announced, with a total scale of over 1,200 kW/2,400 kW. Looking at many projects, Gaogong Energy Storage found that the scale of a single shared power station is getting bigger and bigger, and its power requirements are getting higher and higher.

In addition, the integration of “source, network, load and storage” has become the development trend of the industry, which, to a large extent, has forced energy storage power stations to continuously increase the capacity scale and move towards the GWh era.

Facing the already opened energy storage market window, new and old players including Ningde Times, Guoxuan Hi-Tech, Yiwei Lithium Energy, LG, Samsung SDI, China Southern Power Grid, Guodian Nanzi, Sungrow Power, Narada Power, Shanghai Electric, and Suoying Electric have entered.

It is foreseeable that in the increasingly fierce competition, with the continuous change of technology and the compression of large-scale costs, the single capacity of energy storage power stations will continue to jump.

Shared energy storage is in the ascendant, forcing capacity increase

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