Top 7 5MWh+ energy storage systems in China in 2023
Top 7 5MWh+ energy storage systems in China in 2023
SYL
Relying on the advantages of energy storage battery technology, SYL provides a complete set of energy storage system solutions for auxiliary renewable energy grid connection, power frequency and peak regulation, micro-grid, emergency backup, peak shaving and valley filling, black start, etc.
The company’s products cover ternary lithium battery, modules, industrial and commercial and large-scale energy storage, and its customers cover China, the United States, the United Kingdom and many other countries.
5MWh Containerized Energy Storage Products:
Product features:
● Stand-alone 5MWh liquid-cooled energy storage system is based on 314Ah battery integrated products.
● The energy density per unit area of the product is 275.5kWh/m², which is 20% higher than the traditional 229.3kWh/m², effectively saving land occupation.
● Integrated prefabricated cabin design, higher efficiency in transportation, installation and commissioning.
● Highly integrated design and intelligent cluster-level management technology, the auxiliary power consumption is reduced by 6.6%, which can effectively improve the system online rate.
● Combined with mixed cooling technology, single-stack independent temperature control, high heat dissipation efficiency, uniform heat dissipation and four-in-one fire protection, to achieve higher life-cycle benefits and safety guarantees.
Product parameters:
| Model | SU2132U1000K |
| Maximum power | 1000kW |
| Batteries | LFP |
| Capacity | 280Ah |
| Configuration | 340S7P |
| Rated voltage | 1,088V |
| Voltage range | 952 ~ 1,224V |
| Degree of protection | NEMA 3R / IP54 |
| Noise emission | ≤75dB @1m |
| Operating temperature range | -22°F ~ 113°F / -30°C ~ 45°C |
| Relative humidity | 0~95% (no condensation) |
| Dimensions (W*H*D) | 20*9.5*8 / 6,058*2,896*2,438mm |
| Weight (with/without battery) | 58,700lbs & 18,800lbs / 26.6t & 8.5t |
| Cooling method | HVAC（HVAC system） |
| Fire extinguishing system | FM200 (Novec 1230 optional) |
| Protocol | Modbus TCP/IP |
| Certified | UL1973, UL9540A | IEC62619, IEC61000 |
KELONG
KELONG is a leader in the energy storage industry. The company’s several large-scale energy storage projects have been implemented successively.
The application scenarios cover innovative applications such as independent energy storage, renewable energy matching, thermal power frequency regulation, black start, and networked energy storage.
KELONG Data Energy’s industrial and commercial optical storage solutions have been widely used around the world and have been well received by the market.
5.1MWh energy storage system:
Product features:
● Innovative liquid cooling technology, integrating the three core advantages of active safety (SAFE), intelligence and efficiency (SMART), and simplicity and flexibility (SIMPLE)
● Highly integrated design and intelligent cluster-level manager technology can also effectively reduce operating energy consumption and floor space, and increase battery cycle life by more than 16%.
● The safety design of “three-level fire protection + three-level explosion-proof + triple insulation” realizes long-term high reliability and high stability
Product parameters:
| Product model | S-R10-P8-48S1P-L280-B (energy storage integrated system) |
| Standard charge and discharge rate | 0.5C |
| Combination method | 10P384S |
| Rated energy | 3 4 4 0 kW h |
| Nominal voltage | 1228.8V |
| Thermal management method | liquid cooling |
| IP rating | IP54 (battery compartment) |
| Communication method | CAN/RS485/Ethernet |
| Battery charging/discharging working temperature | 0℃ ~55℃ /-20℃ ~55℃ |
| Storage temperature | -20℃~45℃ |
| Dimensions (width × height × depth) | 6058×2896×2438mm |
| Weight | ＜3 3 T |
| Storage humidity | < 90% ,no condensation |
| Maximum working altitude | 3000m |
TWS
Founded in 1998, TWS is a custom lithium battery manufacturers, which can turn a single cell into a lithium battery solution for various applications in one stop.
TWS has been committed to the research and development and application of energy storage technology, launching a full range of products from module-pack-rack-container complete system, and constantly innovating and upgrading. 
The products have been successfully applied to many global benchmark projects of leading energy storage companies, realizing the full application scenario coverage of the power supply side, grid side and user side.
5MWh liquid-cooled energy storage container:
Product features:
● The system realizes package-level detection and package-level fire protection, with high reliability, stability and safety
● High energy density, a single 20-foot container with a capacity of 5MWh can greatly reduce the land cost and construction cost of the energy storage system
● High integration, the total system cost can be reduced by more than 10%, greatly improving the economy
Product parameters:
| Model | TWS-ESS-1278kWh-500kW |
| Cell capacity | 3.2v/280ah@0.5C |
| System battery configuration | 238S6P |
| Battery rated capacity | 1278kWh |
| Battery voltage range | 660.40~856.80V |
| Degree of protection | IP54 |
| Operating temperature range | -30°~50° |
| Operating humidity range | 0°~95% |
| Dimensions (w*h*d) | 6058*2896*2438mm |
CHINT
Chint mainly provides complete photovoltaic inverters and energy storage system products and solutions for the renewable energy and power industries.
Through continuous technological innovation, Chint’s products have obtained certifications from developed countries such as UL, CSA, and ETL, and are sold to 25 countries and regions around the world, including the United States, Japan, Germany, South Korea, and Brazil.
5.1MWh energy storage system:
Product features:
● Chint’s energy storage system adopts the patented borderless liquid cold plate pack-level solution, and the group efficiency is increased by 6%+
● The design is compatible with the mainstream 280~320Ah square shell batteries on the market, and the pack-level specific energy can be increased by 14%+
● A standard 20-foot container can accommodate 5.1MWh, and the specific energy of the system is increased by 37%+.
● The transportation cost of the system is reduced by 20%, the project area is reduced by 30%, and the construction period is shortened by 15%.
Product parameters:
| Model | CPS ES-2.5MW/5MWh |
| Rated voltage | 729.6Vdc |
| Battery voltage range | 638.4-809.4Vdc |
| Nominal battery capacity | 5600kWh |
| Protection class | IP54 |
| Cooling method | Battery: air conditioner PCS: forced air cooling |
| Operating temperature | -20-40°C |
| Operating humidity | 0-95%,non-condensing |
| Operating altitude | ≤ 2000 meters |
| Communication | RS485Ethernet |
| Dimensions (WxHxD) (mm) | battery container: 12196x2896x2438 |
| Weight (t) | Battery container: 30 PCS container: 13 |
WOLONG
Wolong has been in the renewable energy industry for a long time. In terms of the layout of the energy storage industry chain, Wolong has formed pack, pcs, bms, and ems for self-development.
Among them, in the field of pcs, Wolong has created different types of products such as liquid cooling and air cooling based on the advantages of Wolong Group’s self-supplied converter equipment, and currently has full-stack research and development capabilities for energy storage systems.
5.97MWh energy storage system:
Product features:
● The liquid-cooled heat management system is adopted to precisely control the temperature difference to less than 3°C.
● One-cluster-one-control, eliminate inter-cluster circulation, and realize SOC active balance;
● The system supports 300Ah+ large batteries with a capacity of up to 5.97MWh.
● The integrated design of PCS and battery is convenient for debugging and transportation; it greatly improves the safety and energy conversion efficiency of the energy storage system.
CORUN
In 2009, CORUN established the advanced energy storage materials engineering research center, engaged in the R&D and innovation of energy storage materials and energy storage technologies.
In 2011, it took the lead in launching the distributed micro-grid energy storage system in China. As the company continues to make efforts in the field of lithium batteries, the energy storage business has also ushered in a broader room for growth.
The company’s energy storage system is highly praised by customers for its high safety, high efficiency, modularization, intelligence and other product advantages.
6.6.6MWh energy storage system:
Product features:
● The entire system uses a 40-foot standard container, and the storage capacity of a single container is as high as 6.6MWh
● 300Ah lithium iron phosphate battery
● The protection level has reached IP67
WINCLE
As a rising star in the field of energy storage, WINCLE focuses on basic energy projects such as wind, solar, storage, and charging. It is a high-tech enterprise that provides energy storage solutions.
With the energy storage application technology as the core, the company provides integrated energy storage services for investment, construction and operation of power supply guarantee and peak-valley arbitrage for customers on the power generation side, grid side and user side.
The main products include container-type energy storage systems, prefabricated cabin-type energy storage systems, distributed energy storage systems, optical storage and charging smart micro-grids, mobile power vehicles, smart home storage systems, portable power supplies, etc.
7.5MWh container energy storage system:
Product features:
● All use Thornton new energy “golden brick” large-capacity square aluminum shell batteries,
● This series of batteries can cycle up to 12,000 times, and the system can cycle more than 10,000 times.
● It has the basis of high capacity and long life.
● The battery system, battery management system, monitoring system, and auxiliary system are integrated inside, which has the advantages of high capacity, high flexibility, cost-effectiveness, safety and reliability.
Product parameters:
| Rated capacity | 5.7MWh/5MWh |
| Rated power | 2.5MW |
| Nominal voltage | 1280V |
| Voltage range | 1000V ~ 1460V |
| SOC estimation accuracy | ≤5% |
| Self-discharge rate/month | ≤3% |
| IP protection grade | IP54 |
| Weight (kg) | 55000 |
| Cooling method | air cooling |
| Noise | <65 dB (at 1 m from the system) |
| Communication protocol | Modbus tcp |
In the future, in addition to the top 7 5MWh+ energy storage systems in China in 2023 mentioned in this article. Larger-capacity energy storage containers will better meet the needs of large-scale energy projects, such as renewable energy and grid storage.
What’s more, as technology advances, these containers will become more intelligent, with higher energy density, longer life and lower cost.
At the same time, energy storage containers will also be more widely used in various application scenarios.
English 
Spanish