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The global energy storage market is in a growth stage, with the proportion of electrochemical energy storage increasing year by year. Lithium ion batteries have superior comprehensive performance, with high energy storage density, high charging and discharging efficiency, and fast response speed. They are currently the fastest developing new energy storage technology and the mainstream route of electrochemical energy storage.
This article summarizes several core development trends of energy storage products in 2025 based on reports from research institutions, in order to provide consumers with more information on energy storage.
Further upgrading of thermal management efficiency
Liquid cooling technology has become a standard configuration for most large storage products. More than half of the over 100 energy storage systems surveyed by EESA adopt liquid cooling or liquid cooling/direct cooling composite solutions. Compared with traditional air-cooled systems, liquid cooling has significant advantages in thermal management accuracy, energy consumption control, and service life.
For example, the Kehua Digital Energy S ³ - E-Station intelligent liquid cooled energy storage system reduces battery decay rate by 10% to 15% through a global liquid cooling design, and achieves a cabin level battery cell temperature difference of less than 2.5 ℃; The Jinko Solar Blue Whale liquid cooling system uses non-uniform flow channel design to control the PACK temperature difference within 2 ℃ and reduce auxiliary power consumption by 20%.
In 2025, BYD Energy Storage also released its new product MC Cube-T Pro ESS, which adopts cell stack manufacturing technology and CTS super integration technology, and is equipped with a liquid cooling system to further improve the overall performance of the energy storage system and the economic benefits of the energy storage power station.
The application of liquid cooling technology has laid the foundation for high energy density design and is the core support for large-scale energy storage systems. In the future, its technological deepening directions include dynamic thermal matching, intelligent liquid cooling, etc. Effectively reduce auxiliary power consumption by about 20%; The EnPower system from Envision combines intelligent liquid cooling temperature control with cluster level management, resulting in an 8% increase in lifecycle discharge capacity.
In addition, with the development of artificial intelligence technology, AI's empowerment of the energy storage industry will further reflect the upgrading of liquid cooling technology. For example, the Sungrow PowerTitan 2.0 adopts full liquid cooling heat dissipation and is equipped with AI biomimetic thermal balance technology which is used in battery thermal management. It has three temperature control modes: rapid cooling, micro cooling, and heating, ensuring that the cell temperature is stable at around 25 ℃ and the discharge capacity is increased by 8%.
High single cabin capacity
High energy density has become the focus of competition. In the past year, the 20 foot 5MWh energy storage container has been downgraded from a new "benchmark" to a "baseline", and leading companies have launched products with a capacity of over 6MWh.
CATL 6.25MWh Tianheng System achieves a breakthrough in single cabin capacity through 430Wh/L ultra-high energy density battery cells; The 6.9MWh short blade system of SVOLT Energy adopts CTR streamlined design, which increases space utilization by 38%; The Gotion 7MWh energy storage system adopts a modular design with large capacity and high safety, paired with 650Ah high-capacity energy storage cells; The Far East Energy Storage 8MWh+system broke the industry record with a unit area energy density of 541kWh/㎡, and the initial installation cost was reduced by 15% compared to the 5MWh system.
From a technical perspective, the accelerated application, structural optimization, and integrated technological innovation of large capacity battery cells provide support for the continuous upgrading of energy density in energy storage systems.
In terms of battery cells, 314Ah battery cells have become the mainstream configuration of recent new products, and the battery cell capacity is still continuously breaking through. Some companies, such as REPT BATTERO, have launched 564Ah top of the line battery cells to help single cabin capacity exceed 7MWh; SVOLT Energy's 770Ah "Big Knife" series battery cells have an energy density of 435Wh/L; The EVE Power EnerGalactinc-6700 system uses 720Ah ultra large battery cells, reducing electrical connection components by 50%. In terms of product design, modular design and compact layout have further compressed the equipment volume.
Complete security design and intelligent security technology
Multi level security system builds industry barriers. From intrinsic safety to active safety and then to passive safety, the enterprise has established a full process safety plan of "prevention suppression fire protection". For example, the REPT BATTERO 6.9MWh battery compartment achieves module level thermal runaway control through passive suppression with "three compartments and one row" and active detection with "five layers". Some products, such as the Haichen Energy Storage Desert Scene System, are also customized with high-level protection for extreme environments to ensure safe and reliable operation of equipment in environments such as sandstorms, extreme high temperatures, and extreme cold.
In addition, intelligent security technology has become a new highlight. The new generation CES-4.0 system of CRRC Zhuzhou Institute realizes one cell one chip management, achieving full cell temperature detection, hundred ms level cell explosion detection, and faster and more accurate thermal runaway detection, with a thermal runaway false detection rate close to zero.
Diversified technological routes and emerging long-term energy storage
Lithium batteries dominate, with breakthroughs in technologies such as sodium batteries, liquid flow flywheels, and hydrogen energy storage. Although lithium-ion batteries still dominate in bidding and project operation (over 85%), non lithium technology companies and their products have significantly increased their appearance frequency at recent exhibitions, especially in long-term energy storage technologies dominated by flow batteries. Since 2024, multiple new non lithium technology products have been exhibited.
In terms of sodium battery energy storage, BYD's MC Cube SIB ESS sodium battery system adopts long blade batteries with CTS super integrated design. It is the world's first high-performance sodium ion battery energy storage system, with ultra-high energy density, excellent safety standards, and flexible module design.
In terms of flywheel energy storage, multiple companies such as Honghui Energy, Candela, and Gaofu Flywheel Energy have launched new flywheel energy storage products, opening up new tracks in high-power response demand scenarios.
In terms of liquid flow battery energy storage, Huantai Energy's 500kW/2MWh all vanadium liquid flow system achieves 20000 cycles and a lifespan of 25 years; The 250kW all vanadium liquid flow unit of Linyuan Group can serve as a basic module for MW level systems, suitable for peak shaving and frequency regulation scenarios; The Tianfu Energy Storage 125kW/625kWh all vanadium flow battery module energy storage product has the characteristics of ultra long cycle life, inherent safety, small footprint, and low initial installation cost, and is widely used in photovoltaic distribution and microgrid scenarios.
Conclusion
The energy storage industry is evolving from "scale expansion" to "value creation". The product changes in the past year indicate that after intense price competition in 2024, energy storage products are shifting from simply pursuing low prices and high capacity to value optimization throughout their entire lifecycle. The means of cost reduction and efficiency improvement are shifting from "extensive" to "full chain optimization". Enterprises are optimizing logistics cost optimization system through multi-dimensional methods such as material innovation, process upgrading, and intelligent operation and maintenance.
In addition, the deep integration of liquid cooling technology, high energy density, intelligence, and safety systems is reshaping the new paradigm of energy storage systems. The development of artificial intelligence will also deeply empower the industry, achieving new leaps in technology and product applications. In addition, with the increasing penetration rate of new energy and the improvement of the electricity market mechanism in the future, large storage products will further evolve towards the direction of "high safety, high return, and high adaptability", becoming the core pillar of the new power system.
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