With the rapid development of the global energy storage market, the industrial and commercial energy storage market has also attracted three major changes, mainly focusing on three aspects: products, materials and technology. This article will describe these three aspects.
1. Current status of industrial and commercial energy storage market in 2023
2023 is recognized by the global energy storage industry as a year of dramatic growth for the industrial and commercial energy storage market. It is predicted that industrial and commercial energy storage shipments will exceed 8GWh this year.
2. Current status of industrial and commercial energy storage converters in 2023
With the rapid development of the industrial and commercial energy storage industry, the entire industry chain of the energy storage industry has also ushered in changes. Among them, industrial and commercial energy storage converters have ushered in a climax of development and product release.
Since they have the same origin as photovoltaic energy storage inverters, many inverter manufacturers are accelerating their competition for market share in industrial and commercial energy storage and are developing industrial and commercial energy storage converters accordingly. Sungrow, GoodWe, Growatt, etc. have all released industrial and commercial energy storage systems. Judging from a series of industry data, at an exhibition this year, 90% of the participating PCS companies deployed industrial and commercial energy storage and launched industrial and commercial energy storage related products.
Among the new producers in the market, the most typical ones are looking for new growth points outside the sluggish household energy storage market and the large storage market. It has been observed that at some energy storage exhibitions this year, at least more than one-third of the manufacturers have extended their global household energy storage PCS products to industrial and commercial energy storage PCS product development; there are also many companies in the large storage business extending from large storage PCS to Industrial and commercial energy storage PCS business.
Many companies with different backgrounds are constantly expanding their product influence. Based on the rapid industrial competition period, industrial and commercial energy storage converters will also continue to iteratively upgrade in terms of products, materials, and technologies in 2023, forming an important aspect of industrial and commercial energy storage converters in 2023.
If you are interested in the energy storage manufacturers mentioned above, you can check out Top 10 energy storage battery manufacturers in the world.
3. New product changes: full penetration of modular converters
From the system side, the current mainstream solutions in the industrial and commercial energy storage market are still dominated by energy storage integrated cabinets such as 100KW/215kWh, 100kW/200kWh, 100KW/233KWh, 186KW/372KWh, etc., and corresponding 100KW–200KW energy storage converters have become The most common rules.
However, in order to further cater to industrial and commercial energy storage usage scenarios, currently, industrial and commercial converter manufacturers such as Goodwe have released modular PCS for industrial and commercial energy storage scenarios.
Industrial and commercial energy storage is a track with diverse needs, flexible technical paths, and comprehensive product layout. In order to meet this differentiation, modular design can increase flexibility, safety, and efficiency while meeting the power needs of different users. To reduce losses, it can also be optimized and monitored in real time based on the project’s scale and power conditions to ensure the implementation of real “smart energy storage”.
In the grid-connected three-phase four-wire working mode, the independently designed module can accurately control single-phase power to meet the three-phase unbalanced output and solve the problem of three-phase load imbalance in Taiwan and factory areas.
The low-order harmonics in the factory area are controlled through software algorithms, and the module has a DC source function. It can also be applied to flexible-direct interconnection scenarios in Taiwan areas.
In the first half of this year, the shipment volume of modular energy storage converters for a Chinese energy storage industrial and commercial company continued to rise. According to company data, the company’s industrial and commercial PCS shipments have reached 300MW, with a market share of about 20%.
The financial report shows that in the first half of this year, the company’s micro-network business achieved operating income of 389 million yuan, a year-on-year increase of 380.73%.
4. New changes in materials: Silicon carbide may solve the problem of "IGBT"
In terms of material system, the world’s first silicon carbide version of modular industrial and commercial energy storage converter PWS1-125KW is a symbol, and the third generation of semiconductor power devices has achieved a technological breakthrough. This is also a major breakthrough in the field of energy storage converters.
In China, due to the lack of IGBT-related technical talents, weak technological foundation and late start of corporate industrialization, the IGBT market has long been monopolized by large multinational companies. The release of the silicon carbide version of the power device of the energy storage converter marks the gradual resolution of the above problems to a certain extent.
It is reported that equipped with silicon carbide 125KW PCS, the integrated cabinet is directly upgraded to 125kW/250kWh, achieving an increase in charge capacity under the same volume.
More importantly, the change of material system has also led to continuous breakthroughs in product performance: under rated power conditions, the average efficiency of this PCS has increased by 1%, and the overall module power density has increased by 25%.
5. New technological changes: Power grid capacity has become an important reserve
Faced with the diversity of demands in industrial and commercial energy storage scenarios, PCS modularity can meet the flexible operation needs of future industrial and commercial operations; in addition, modular PCS can better cope with potential expansion scenarios, especially in electric vehicle fast charging and 4C overcharging. After the battery becomes more popular, the capacity can be expanded at any time by adjusting the number of modules to facilitate later management.
In the short term, industrial and commercial energy storage PCS has relatively single functions and is more adaptable; it is based on bidirectional current conversion, is compact, can be flexibly expanded according to its own needs, and is easier to integrate with the battery system; it has 150-750V ultra-wide The voltage range can meet the series and parallel requirements of a variety of batteries; one-way charging and discharging can adapt to various types of photovoltaic inverters.
In the long run, in addition to the basic functions of the converter, the corresponding industrial and commercial energy storage converters also need to have grid support functions, such as primary frequency regulation, source-grid-load rapid dispatching functions, etc. The grid has strong adaptability and can achieve rapid power response. wait.
At present, industry and commerce are still in the first stage of development, and peak-valley price differences have become the most important way to make profits. Therefore, emergency power backup and peak-valley arbitrage in industrial parks are still the main functions.
When industrial and commercial energy storage enters the second and third stages of development, the functions of energy storage converters connected to the grid will also be upgraded accordingly.
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