2025 Marks the First Year of Mass Production for Large Energy Storage Cells! 500Ah+ Mass Deliveries, ESIE 2026 Energy Storage Expo Invites Global Buyers to Explore New Opportunities

2025 marks a pivotal year for the energy storage industry. The large energy storage cells, which were once limited to “theoretical parameters”, will officially bid farewell to the technical competition phase and enter the practical testing stage of capacity release, yield improvement, and project implementation. Leading enterprises like CATL, EVE, Envision, HTHIUM, and SUNWODA have successively achieved mass production and delivery, and with the intensive landing of GWh-level strategic cooperation and accelerated expansion into overseas markets, this marks the transition of large-capacity cells from lab prototypes to commercial applications. The speed at which energy storage systems are evolving to higher energy density and lower cost has far exceeded industry expectations.

1. The Race for 500Ah+ Cell Mass Production Intensifies: Leading Enterprises Show Impressive Results

2025 is the “explosive year” for the mass production and delivery of large energy storage cells, with many battery companies accelerating capacity ramp-up, and products of 500Ah and above being extensively landed, demonstrating strong commercialization capabilities:

CATL: The 587Ah energy-specific storage cell began mass production in

June, with a daily output of over 220,000 units from its Jining base. By December, it had shipped 2GWh, with an expected annual output of 3GWh, taking the lead in entering into GWh-level commercial-scale applications;

EVE: The 628Ah cell, mass-produced at the end of 2024, achieved the production of 750,000 cells in 2025, and in September, it was successfully used in the world’s first 100MWh-level project--200MW/400MWh independent energy storage station in Ling Shou, Hebei with overseas shipments proceeding in parallel;

Envision: The 500+Ah cell, produced at its Cangzhou plant, has already been exported immediately after mass production, and next-generation 700Ah+ products are also in the mass production preparation phase;

HTHIUM: The world’s first 1,175Ah ∞Cell was launched and mass-produced, while the 587Ah cells were simultaneously delivered in  Xiamen base. In October, a 6.25MWh energy storage system, equipped with the 1,175Ah cells, was successfully shipped to Europe;

SUNWODA: The 684Ah stacked cell began mass production in September, and by the end of December, 1 million cells had been produced, highlighting its fast mass production capability.

Additionally, companies such as cornex, GREAT POWER, CALB, RJE, Narada, GOTION HIGH-TECH, REPT BATTERO, and AC New Energy have announced mass production schedules for 500Ah+ and 600Ah+ products. The competition in the large energy storage cell market is expected to fully intensify in 2026.

2. GWh-level strategic partnerships become the mainstream, supply chain synchronization trend emerges

As cell technology gradually converges, supply chain stability and cost control have become the core of market competition. The collaboration model between system integrators and battery companies is evolving toward long-term, large-scale, and deep integration. By the end of 2025, heavy GWh-level orders have emerged, reshaping the industry’s collaboration landscape:

CATL and HYPER STRONG signed a procurement agreement for no less than 200GWh from 2026 to 2028, with the 587Ah cell already being used in the 400MW/2400MWh energy storage project in Baotou;

HTHIUM and CRRC Zhuzhou Institute reached collaboration for 120GWh of energy storage products supply during the 15th Five-Year Plan period, covering the full range products from 314Ah to 1,175Ah;

EVE and Rochenergy signed a three-year 20GWh collaboration agreement, with 10GWh dedicated to the 628Ah/588Ah large-capacity cells;

Sungrow and Sunwoda have deepened their collaboration, with their Powertitan 3.0 energy storage system set to apply the 684Ah large-capacity cell.

These long-term strategic partnerships not only ensure mutual capacity demand but also drive early-stage collaborative development between systems and cells, becoming an industry trend, deeply integrating product performance and safety systems to reduce costs and improve efficiency for energy storage projects.

3. Accelerating overseas expansion! China’s large energy storage cells lead the global long-duration storage market

Leveraging the advantage of complete industry chain, China’s large energy storage cells are rapidly expanding globally. The results of overseas market expansion in 2025 are significant, evolving from single-product exports to system solutions and standards:

CATL’s 530Ah cells, coupled with a 4GWh energy storage system, will supply Vena Energy in Singapore.

EVE Energy’s 628Ah cells successfully secured a 2.2GWh order from Australia’s EVO Power and signed a 1GWh energy storage system project with TSL Assembly.

The global expansion of China’s large energy storage cells not only opens up the long-duration storage market overseas but also enables Chinese energy storage technology standards and solutions to gain global recognition, showcasing China’s core competitiveness in global energy storage industry. Currently, while the 500Ah+ cells are still in a period of rapid development with diverse sizes and specifications, industry consensus is clear: 6MWh+ energy storage systems will accelerate the replacement of the previous 5MWh+ solutions, continuously driving down the cost per unit of energy storage. From mass production and deliveries and strategic partnerships to global project implementation, 2025 undoubtedly marks the “first practical year” for large energy storage cells transitioning from laboratory prototypes to station applications.

4. Focus on ESIE 2026! The vane of global energy storage industry , connecting professional buyers with core resources

As large-capacity cell technology rapidly evolves and global markets continues to expand, the industry urgently needs an efficient platform to connect cutting-edge technology, market dynamics, and supply chain resources. As a “vane” for the energy storage industry, the 14th Energy Storage International Conference & Expo (ESIE 2026) will be grandly held from March 31 to April 3, 2026, at the Capital International Exhibition & Convention Center Beijing China.

So far, leading industry enterprises including CATL, EVE, Envision, HTHIUM , SUNWODA, Cornex, GREAT POWER, CALB, RJE, Narada, GOTION HIGH-TECH, REPT BATTERO, and AC NewEnergy have confirmed their participation. This year’s exhibition will focus on key areas such as large energy storage cells, long-duration storage, energy storage system integration, and integrated solar+storage+charging solutions. It will serve as a high-end platform for new product launches, technical exchanges, and business negotiations, offering global energy storage professional buyers a precise matchmaking channel.

Whether seeking cutting-edge technology collaborations, exploring quality supply chain resources, or planning global energy storage projects, ESIE 2026 will be an unmissable annual event for industry professionals. We sincerely invite global energy storage professional buyers and upstream and downstream enterprises to gather in Beijing to explore new trends in the industry and seize new opportunities for industrial upgrading.

Address: Capital International Exhibition & ConventionCenter Beijing China

When: March 31 – April 3, 2026
Highlights: Leading enterprises gathering, new product launches, precise supply-demand matchmaking, authoritative trend interpretations
Exhibition and Visitor Inquiries: Mr. Cao: +86 135 5271 2189, Mr. Wang: +86 135 8188 5520, Mr. Li: +86 135 8174 1680, Mr. Zhao: +86 182 1018 8771, Ms. Bai: +86 180 3145 1007

Sungrow’s First Energy Storage Plant in the Middle East Launched，with an Annual Capacity of 10 GWh

According to foreign media reports, the Egyptian government recently announced that it has signed a series of agreements worth over 1.8 billion USD with Norwegian renewable energy developer Scatec and Chinese energy storage company Sungrow. These agreements aim to build large-scale solar+storage projects and promote local manufacturing of battery energy storage systems. This series of agreements is a key initiative for Egypt to expand its clean energy installed capacity and improve its new energy industry chain.

Scatec will develop the “Energy Valley” project in Minya, which will include the construction of a large-scale integrated solar power and energy storage plant. Meanwhile, Sungrow will build a battery energy storage system manufacturing plant in the Suez Canal Economic Zone (SCZONE) to support energy storage equipment for the project and the regional market.

Both projects are being advanced with the coordination of Egyptian Ministry of Electricity and Renewable Energy and the Suez Canal Economic Zone Authority. Egyptian Prime Minister Mostafa Madbouly stated that these projects highly align with the country’s strategy of localizing new energy industries, and that localizing energy storage and renewable energy manufacturing will be key pillars for enhancing Egypt’s energy security and driving its green transformation.

As part of the project arrangements, the Egyptian Electricity Transmission Company (EETC) has signed a Power Purchase Agreement (PPA) with Scatec, while the New and Renewable Energy Authority (NREA) has signed a land use agreement for the Energy Valley project. Additionally, Sungrow has secured the land use rights for building the battery energy storage manufacturing plant in the TEDA Industrial Zone in SCZONE.

Furthermore, Scatec and Sungrow Energy have signed a battery supply contract, under which Sungrow Energy will provide the battery energy storage systems for the Energy Valley project in Minya.

According to the introduction, the Energy Valley project is positioned as one of the largest integrated clean energy projects in the world, and the first solar+storage project in the region capable of providing stable power supply around the clock. The project will build a 1.7 GW (AC) solar photovoltaic capacity, along with a total of 4 GWh of battery storage systems, distributed across Minya, Qena, and Alexandria. The project will also build new substations and dedicated transmission lines to provide clean electricity to the Wadi El-Sereiriya Industrial Zone in Minya.

On the manufacturing side, Sungrow Energy’s factory in Egypt will become the first battery energy storage system manufacturing base in the Middle East and Africa. Located in the TEDA-Egypt Industrial Zone in Ain Sokhna, the factory will cover an area of about 50,000 square meters and is expected to create around 150 direct jobs. Once operational, the factory will have an annual capacity of 10 GWh, with production expected to begin in April 2027.

Regarding financing, the Egyptian Prime Minister also witnessed the signing of preliminary financing agreements for the Energy Valley project between Scatec and the European Investment Bank (EIB), the European Bank for Reconstruction and Development (EBRD), and the African Development Bank (AfDB), marking the project’s support from multilateral development financial institutions.

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Sungrow Energy has confirmed its sponsorship of the 14th Energy Storage International Conference and Expo (ESIE 2026), register now to attend Asia’s Largest Energy Storage Trade Show for free:

What: The 14th Energy Storage International Conference & Expo

When: Conferences: March 31 - April 2, 2026

  Exhibitions: April 1-3, 2026

Where: CIECC Beijing, China

Address: No. 55 Yudong road, Shunyi District, Beijing China

4.8 GWh Installed: Beijing KeRui Supports the Grid Connection of Two Major Grid-Side Energy Storage Projects in Inner Mongolia, Chi

In December 2025, two large-scale grid-side independent energy storage projects supported by Beijing KeRui were successfully connected to the grid in Inner Mongolia and put into operation: the 500 MW / 2,000 MWh Gushanliang project in Ordos and the 400 MW / 2,400 MWh Bu’erhantu project in Baotou.

Leveraging outstanding engineering execution capabilities, Beijing KeRui’s service team completed the entire process from installation to power delivery in just 50 days—an industry miracle that provided strong assurance for the high-quality and rapid commissioning of both projects. With a combined capacity of 4.8 GWh, the two projects set a new benchmark for the development of China’s independent energy storage sector in terms of large scale, high quality, and accelerated delivery. They inject strong momentum into regional energy structure transformation and provide critical support for building a stable and reliable new-type power system.

In these two flagship projects, Beijing KeRui’s integrated energy storage power conversion and step-up units served as the primary AC-side equipment and played a central role in successful commissioning. Several innovative technologies proved critical to project delivery:

Energy-Efficiency-Oriented Intelligent Thermal Management
The system adopts an innovative multi-tier thermal management strategy centered on “on-demand activation and load matching.” By dynamically aligning transformer cooling requirements with fan operating conditions, the design achieves optimal coordination between auxiliary power consumption and heat dissipation efficiency, significantly reducing unnecessary energy use. In addition, an intelligent heat-exchange buffering design adjusts fresh-air temperature seasonally—mitigating cold shock in winter to protect equipment and pre-cooling intake air in summer to enhance heat dissipation—thereby ensuring long-term stable operation while further refining overall energy efficiency.

Reinforced Structural Design with Integrated Drainage
Through optimization of the converter platform layout, the system enhances overall structural strength while naturally forming efficient drainage channels. This eliminates the need for additional drainage components, achieving dual functionality within a single structure and balancing structural safety with environmental adaptability. The design reflects a philosophy of simplicity, reliability, and efficiency.

Verified Transport Reliability
The equipment underwent rigorous transportation testing, including over 3,000 kilometers of highway transport and 450 kilometers of reinforced standard-condition road testing. These trials fully validated the system’s ability to withstand complex overland transportation challenges, ensuring structural integrity and stable performance throughout delivery and meeting the stringent requirements of real-world engineering logistics.

One notable highlight of the projects is the application of HyperStrong’s flagship large-capacity liquid-cooled energy storage system, representing the latest advancements in electrochemical energy storage technology. HyperStrong’s independently developed second-generation power conversion system (PCS) features advanced technology with fully independent and controllable core technologies. It can accurately respond to grid dispatch requirements and, through customized design, adapts effectively to complex operating conditions to ensure safe and stable year-round operation. This PCS has been successfully integrated into Beijing KeRui’s integrated unit solution.

Another key highlight is the adoption of CATL’s advanced 587 Ah energy storage cells, which achieve an energy density of 434 Wh/L, a cycle efficiency of up to 96.5%, and further optimized cycle life and degradation performance. This marks the first time Beijing KeRui’s integrated power conversion and step-up system has been deployed in combination with this cell model, demonstrating the company’s rapid response capability in adopting cutting-edge technologies and integrating high-performance components. Beijing KeRui’s integrated design deeply combines core modules—including the power conversion system, step-up transformer, power distribution switchgear, intelligent control, fire protection and security, and thermal management—into a single solution. Through optimized structural topology and layered spatial design, the capacity of a single box-type dry transformer can be increased to over 8,250 kVA, unlocking substantial energy output within limited space. This approach reduces land-use costs while enabling flexible deployment across diverse application scenarios.

The commissioning of the two energy storage power stations will significantly enhance the Inner Mongolia power grid’s ability to accommodate variable renewable energy sources such as wind and photovoltaic power. The projects will effectively smooth peak–valley load differences, improve grid flexibility, and strengthen overall system security and stability. Looking ahead, leveraging the comprehensive advantages of its integrated energy storage power conversion and step-up units—spanning energy efficiency, structural optimization, reliability, and adaptability—Beijing KeRui will continue to provide high-performance, high-reliability energy storage system solutions. The company aims to help customers achieve lower operating costs, higher full life-cycle discharge returns, and improved investment performance.

As an active participant and key driver in the development of new-type power systems, Beijing KeRui remains committed to advancing clean and low-carbon energy transition through technological innovation and superior service, contributing to a safer, more efficient, and greener modern energy system.

Register now to attend Asia’s Largest Energy Storage Trade Show for free:

What: The 14th Energy Storage International Conference & Expo

When: Conferences: March 31 - April 2, 2026

      Exhibitions: April 1-3, 2026

Where: CIECC Beijing, China

Address: No. 55 Yudong road, Shunyi District, Beijing China

China Mingyang Longyuan’s First 100MW/400MWh High-Voltage Cascade Independent Energy Storage Project Achieves Full-Capacity Grid Connection

On December 28, Mingyang Longyuan’s first 100MW/400MWh high-voltage cascade independent energy storage project, the Yashitu  Power Station, successfully achieved full-capacity grid connection at the Gushanliang site in Ordos, China. The project also passed the “three charge and three discharge” test of the West Inner Mongolia Power Grid and has officially entered commercial operation.

As an optimal solution for large-scale energy storage power stations, Mingyang Longyuan’s high-voltage cascade energy storage system demonstrates significant advantages, including large unit capacity, high energy conversion efficiency, enhanced safety performance, lower overall system cost, simplified coordinated control, and extended battery lifespan. The system also provides strong grid-support capabilities, enabling reliable performance under complex conditions such as extreme temperature variations and high humidity, while effectively supporting peak shaving, frequency regulation, and large-scale integration of renewable energy.

The project has achieved a long-duration cycle efficiency exceeding 90 percent, marking a substantial breakthrough in key performance indicators. This achievement reflects the sustained efforts of Mingyang Longyuan’s R&D and service teams. Despite harsh construction conditions characterized by strong winds, heavy snowfall, and extremely low temperatures in Ordos, the team overcame multiple technical challenges through continuous on-site work, ensuring the project’s timely commissioning. The experience gained has further strengthened the company’s capabilities in operating energy storage systems under extreme environmental conditions, laying a solid foundation for long-term stable and reliable performance.

The successful commissioning of the Gushanliang energy storage power station in Ordos underscores Mingyang Longyuan’s technical strength and product reliability, representing an important milestone in the company’s continued expansion in the energy storage sector. Looking ahead, Mingyang Longyuan will remain driven by technological innovation, advancing the upgrading of the energy storage industry and contributing to the development of a clean, low-carbon, safe, and efficient energy system.

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Register now to attend Asia's Largest Energy Storage Trade Show for free:

What: The 14th Energy Storage International Conference & Expo

When: Conferences: March 31 - April 2, 2026

              Exhibitions: April 1-3, 2026

Where: CIECC Beijing, China

Address: No. 55 Yudong road, Shunyi District, Beijing China

12.8 GWh Energy Storage Cluster Connected to the Grid AI-Powered Energy Storage Reshapes the Future of New Power Systems

Recently, the world’s largest single-site electrochemical energy storage power station—the Envision Jingyi Chagan Hada Energy Storage Power Station—was successfully connected to the grid. With a total capacity of 4 GWh, the project is fully equipped with Envision’s AI-powered energy storage system. This milestone marks the completion and grid connection of Envision’s 12.8 GWh energy storage cluster deployed across Bayannur, Ordos, Hohhot, Ulanqab, Xilingol League, and Alxa League. To date, Envision-led energy storage projects in Inner Mongolia exceed 14 GWh in total capacity.

The project passed grid verification at rated power through “three charge and three discharge” and a 72-hour continuous trial operation at one time, becoming the largest energy storage project in China to complete such testing. This achievement not only sets new global records for energy storage cluster scale and grid-connection speed, but also demonstrates Envision’s capabilities in ultra-large-scale system integration, extreme-environment adaptability, deep grid interaction, and large-scale project delivery.

Notably, the project’s grid connection coincided with the release of China’s Guidelines on Promoting High-Quality Power Grid Development by the National Development and Reform Commission (NDRC) and the National Energy Administration (NEA), highlighting strong alignment between national policy direction and industrial practice. Together, they signal that AI-centered energy storage technologies are reshaping the future of new power system from technological, market, and application perspectives.

Technology: From “Optional” to “Essential”

The Guidelines clearly state that power system regulation capabilities should be upgraded toward greater diversity and massive-scale coordination. They call for accelerated development of regulation capabilities for new grid-connected entities, including distributed renewable energy and new-type energy storage, to enable the coordinated and optimized dispatch of diverse and large-scale resources. The Guidelines also emphasize strengthening R&D in critical power grid technologies, targeting application scenarios such as deserts, Gobi and barren regions, integrated wind–solar–hydro systems, high-altitude areas, and deep and far-offshore environments. They propose piloting long-distance transmission from large-scale 100% renewable energy bases, and accelerating the engineering validation and deployment of grid-forming technologies.

It is said that Envision’s AI energy storage system deployed in Inner Mongolia integrates advanced capabilities from “grid-following” to “grid-forming”, enabled by a full-time-scale simulation platform and a three-layer grid-forming architecture spanning equipment, system, and site levels. This allows GW-scale stations to connect to the grid immediately upon energization, significantly reducing commissioning time, mitigating oscillation risks, and enhancing system support strength. As a result, energy storage evolves from a “grid follower” to a “grid builder,” providing a solid technical foundation for power systems with high shares of renewable energy.

Market: From Grid Connection to Market Participation

The Guidelines emphasize deep integration between market mechanisms and dispatch systems, and encourage exploration of new pricing mechanisms. This creates clear and predictable revenue pathways for AI-powered energy storage through participation in electricity spot markets, provision of ancillary services such as frequency and peak regulation, and access to capacity compensation and price arbitrage.

The 12.8 GWh energy storage cluster will be fully integrated into the electricity spot market. Leveraging Envision’s AI system—where trading agents and grid-forming agents operate in coordination—the project enables a closed-loop lifecycle operation covering forecasting, dispatch, trading, and self-learning. This approach not only enhances the intelligence, efficiency, and execution of power trading decisions, but also provides a replicable and scalable model for the large-scale participation of new-type energy storage in electricity markets. At the same time, it significantly improves regional renewable energy consumption and strengthens the operational resilience of the power grid. In previous deployments, Envision’s AI energy storage system has ranked first in trading forecast accuracy at several sites in Inner Mongolia for consecutive months. Based on measured operational data, the project is expected to increase total lifecycle returns by more than 20%.

Applications: From Single Use to Broad Scenarios

The Guidelines elevate smart microgrids as a key component of new-type power systems, unlocking vast opportunities for AI energy storage in industrial parks, zero-carbon parks, and remote areas. In these scenarios, AI-powered energy storage functions as a local energy brain, optimizing the coordination of generation, grid, load, and storage to maximize renewable self-consumption, enhance supply reliability, and enable higher-level grid interaction.

As power systems become increasingly clean and market-oriented, simple equipment aggregation is no longer sufficient. In high-renewable scenarios, AI-driven energy storage that balances grid stability with revenue optimization has become indispensable. The successful grid connection of the Inner Mongolia cluster underscores Envision’s leadership in physical AI and AI-enabled renewable energy solutions.

Envision has established a full industrial chain in Inner Mongolia, from battery cells and system integration to project delivery and intelligent operation. Leveraging its integrated capabilities, the project drives industrial clustering, injects new momentum into the local economy, supports the development of a new-type power system, and underpins the region’s efforts to accelerate the construction of a nationally important energy and strategic resources base.

This milestone delivery marks a successful conclusion to Envision’s energy storage business expansion in 2025. Empowered by physical artificial intelligence, Envision has secured a series of major contracts both at home and abroad this year. Building on its established global footprint, the company has successfully expanded into ten strategic overseas markets, including Australia, Chile, Italy, and Poland. Looking ahead, Envision will continue to strengthen the foundational support for next-generation power systems through innovative products and world-class project execution, accelerating the global transition toward zero-carbon and driving a new era of shared prosperity powered by Chinese renewable energy technologies.

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Envision Energy Storage has confirmed its participation in the 14th Energy Storage International Conference and Expo (ESIE 2026). Register now to attend Asia's Largest Energy Storage Trade Show for free:

What: The 14th Energy Storage International Conference & Expo

When: Conferences: March 31 - April 2, 2026

              Exhibitions: April 1-3, 2026

Where: CIECC Beijing, China

Address: No. 55 Yudong road, Shunyi District, Beijing China

‘Rapid Growth but Disorderly Competiton’: Longi Enters Energy Storage Industry with PotisEdge Deal

Source: Energy Storage News

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Longi PotisEdge Presidents agreeing marking the new partnership with a ceremony in London. Image: Longi.

PotisEdge manufactures BESS and all its components (except cells) from its facilities in Suzhou, and soon Georgia, US. Here, battery modules are being sorted and assembled into packs, prior to BESS assembly. Image: PotisEdge.

We caught up with the president of system integrator PotisEdge following news of its acquisition by Longi, which marks the Chinese solar PV giant’s move into the energy storage industry.

News of Longi’s acquisition of PotisEdge first emerged on 13 November, with a public notice on the Shaanxi Provincial Administration for Market Regulation website. It revealed that Longi Green Energy Technology has agreed to acquire c.62% of PotisEdge via an equity acquisition, capital increase and voting rights, giving it sole control of the firm. Prior to the deal, PotisEdge was 44.79% held by individuals.

Longi and PotisEdge are characterising the deal as a partnership via which Longi will launch its ‘Energy Storage One-Stop Solution’, as it now covers solar, hydrogen and energy storage. Longi said its energy storage solution will be deployed first in key markets such as the UK, Germany, Italy, and Spain.

Longi VP Dennis She said in the announcement: “The current development stage of the energy storage industry is very similar to the early days of solar — confidence-driven rapid growth, but also bringing disorderly competition. The future dimension of competition in energy storage has evolved from ‘having the technology’ to ‘value reliability.”

 

PotisEdge president: Combination will offer opportunities

Speaking to Energy-Storage.news at an event in London marking the deal, PotisEdge founder and president Minjie Shi said: “Longi will bring the strong brand name and a big market to PotisEdge, and the combination of the two companies offers big opportunities to the market.”

“We are a technology company that designs and manufactures all the key components with the exception of the battery cells. We’re highly integrated, and that’s allowed us to gain a good reputation and solve market challenges,” Shi said.

“Battery cell manufacturing and system integration are totally different. Battery cells are a chemistry process, system integration is about controls, software, hardware and intelligent systems.”

 

Core technology offering

The firm’s offering is built around the five ‘S’s: BMS (battery management system), EMS (energy management system), PCS (power conversion system), TMS (thermal management system) and its proprietary ICCS (intelligent cell contact system) technology for predicting thermal runaway.

In September, the firm launched a 6.25MWh AC BESS product with string inverters and its ICCS technology for fire safety. The tech is designed for monitoring and protection of battery cells, to prevent thermal runaway and ensure safe operation of the system. It provides early warnings, predictions and an immediate response to potential cell malfunctions.

Before the AC launch, its grid-scale products were DC products. “Amongst the 12GWh of deployments, that has mainly been DC products, especially the 5MWh unit. Now we are shipping the all-in-one AC solution,” Shi said, adding that all regions are showing demand for both DC and AC products.

He added that the PotisEdge brand would remain for the foreseeable future, as it had over a decade of experience in the BESS industry with 12GWh deployed. It has mainly been active in the grid-scale segment, with deployments to date primarily in China, but also in North America, Europe and Australia.

 

Markets

“Europe is an important market for us, we’ve already delivered for a few sites here like Italy,” he said.

It has 31GWh manufacturing capacity from its facility in Suzhou, China, and a 4-6GWh one in Atlanta, Georgia, US, set to start manufacturing next year. The Atlanta facility will produce the same products as its Suzhou facility, but will be more automated, with only 100 employees needed, Shi said.

“For the US market, the main thing is to localise production, and we’ve focused on solving this for the last two years. All companies are facing that same challenge.”

PotisEdge is also working on a modular BESS solution, as many other system integrators and BESS manufacturers have done in response to transportation issues with ever more energy-dense and heavy 20-foot containers.

As part of its expansion into storage with PotisEdge, Longi will establish a Solar-Storage Technology Innovation Center Center of Excellence in Europe, it said.

Chinese solar PV companies have steadily moved into energy storage, seeking to capitalise on its growth opportunities but also to offset falling profits in their core market as the sector suffers from over-supply. See all coverage of Longi by our sister site PV Tech here.

PotisEdge president Minjie Shi and Energy-Storage.news reporter Cameron Murray.

(By Cameron Murray)

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CENSA Upcoming Events:

1. Dec.4-5 | 2025 China Energy Storage CEO Summit | Xiamen, Fujian

Register Now to attend

Read more: http://en.cnesa.org/new-events-1/2025/12/4/dec4-5-2025-china-energy-storage-ceo-summit

2. Apr. 1-3, 2026 | The 14th Energy Storage International Conference & Expo

Register Now to attend, free before Oct 31, 2025.

Read more: https://en.cnesa.org/new-events-1/2026/4/1/apr-1-apr3-the-14th-energy-storage-international-exhibition-amp-expo

TUV Rheinland Joins CNESA

We're happy to welcome TUV Rheinland Greater China to CNESA!

About TUV Rheinland

TÜV Rheinland Greater China is a leading provider of independent testing, certification and evaluation services worldwide.  TÜV Rheinland was founded over 140 years ago and has 19,000 employees in 69 countries.  With manufacturers’ products distributed all over the world, its name has long been synonymous with safety and quality.

TÜV Rheinland Greater China established its first branch office in Taiwan in 1986 and now has more than 30 service locations in Mainland China, Hong Kong and Taiwan with nearly 3,600 employees providing professional testing and certification services for manufacturers on product safety and quality management. In addition to certification services, TÜV Rheinland Greater China provides a number of professional seminars in different fields each year to help businesses train their personnel and improve their competitiveness.

Guided by a corporate mission of achieving a balance between man, technology and the environment as well as the international trend towards environmental protection, TÜV Rheinland Greater China has been a strong proponent of green solutions in recent years. By continuing to invest and assist with the development of environment-related products, services and management systems, TUV Rheinland Greater China strives to support businesses realize their commitment to environmentally-friendly and sustainable development.

To learn more about TUV Rheinland Greater China, visit: http://www.tuv.com/en/greater_china