500MW/200MWh! JD Energy’s First GWh-Level Project Successfully Grid-Connected

In December 2025, the 500MW/2000MWh energy storage project was successfully grid-connected in Dengkou, Inner Mongolia. The energy storage station, standing proudly under the winter sun, is the first GWh-level project delivered by JD Energy. It not only set a new record for the scale of a single project but marked a significant milestone in the company’s development with its outstanding construction achievements.

01. 500MW/2000MWh: JD Energy enters the GWh-level project delivery

The 500MW/2000MWh energy storage project in Dengkou, Inner Mongolia, the first GWh-level project of JD Energy, utilized the company’s newly developed string-type prefabricated cabin, Galaxy-1. The project has an installed capacity of 500MW/2000MWh, deploying 400 units of Galaxy-1-4G and 100 units of eLink-HV35, a combined inverter and transformer.

In the harsh environment of sandstorms and cold temperatures, Galaxy-1 was used for the first time in a large-scale application on the grid-side. Despite the swirling yellow sands and biting winds, Galaxy-1 has laid a solid foundation for the new energy paradigm of Inner Mongolia with its exceptional environmental adaptability and operational stability.

02. Innovation empowerment: String-type prefabricated cabin Galaxy-1’s successful debut

The successful implementation of the 500MW/2000MWh energy storage project in Dengkou is driven by the flagship new product of JD Energy, the string-type prefabricated cabin Galaxy-1. This product adopts “All In One” design concept, integrating systems including 314Ah lithium iron phosphate (LiFePO4) batteries, BMS, string-type PCS, fire protection system, thermal management system, power distribution and communication system into a standard 20-foot container. It boasts key advantages of high efficiency, high safety and high integration. Through the successful practice of Dengkou project, Galaxy-1 made its debut on the grid-side, verifying its reliability and excellency in large-scale application.

With eMind-Trader as its core software system, JD Energy played a central role in supporting Dengkou power station’s operations from grid connection, market entry to autonomous participation in power trading, realizing a full value chain from system integration and project delivery to smart operation. This comprehensive technological advantage covering both hardware and software can not only significantly enhances the regional integration of new energy but also maximizes the project’s full lifecycle returns, achieving both stability and economic benefits.

03. Energizing the desert: green power driving regional development

At the turn of the year, Inner Mongolia has witnessed a surge in the grid connection of energy storage projects with energy constantly flowing. The successful grid connection of the 500MW/2000MWh energy storage project in Dengkou can effectively mitigate the fluctuations of intermittent renewable energy power generation of wind and solar power and significantly improve the grid’s adjustment capabilities and operational safety, providing more stable and higher-quality green electricity for Inner Mongolia and the North China region.

Meanwhile, the project will greatly increase the region’s ability to absorb renewable energy, reducing wind and solar curtailment. It will reinforce the energy transformation in Inner Mongolia and advance the national strategic goals of carbon peaking and carbon neutrality.

The successful grid connection of the 500MW/2000MWh energy storage project in Dengkou, Inner Mongolia marks JD Energy’s successful breakthrough in delivering a GWh-level single-project. It embodies the power of JD Energy with the debut of its flagship new product Galaxy-1. Moving forward, JD Energy will continue to innovate and explore energy storage sector, leaving a solid mark on the vast energy landscape while accelerating the progress of China’s energy revolution.

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JD Energy has confirmed its participation 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

RWE Starts Building Germany’s Largest BESS

Source: Energy Storage News

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RWE and stakeholders groundbreaking on its Gundremmingen BESS project, the largest in Germany. Image: RWE.

Power firm RWE has launched construction on a 400MW/700MWh BESS project in Bavaria, Germany, the largest being built in the country.

The Germany-headquartered firm announced the start of construction on the project yesterday (29 October), in a ceremony attended by Bavarian Minister-President Dr Markus Söder (pictured above, second from left).

The 1.75-hour duration battery energy storage system (BESS) project is being built alongside the Gundremmingen nuclear power plant, which is undergoing decommissioning, and will use the plant’s existing grid connection.

RWE is investing around €230 million (US$267 million) in the BESS, which will comprise 200 container units and 100 inverters, and is expected online in 2028. It will take the title of largest BESS online from Eco Stor’s 103.5MW/238MWh Bollingstedt, commissioned earlier this year, as well as Eco Stor’s pipeline of 300MW/600MWh projects.

Söder commented: “Gundremmingen remains a key location in the Bavarian energy supply. In addition to the new battery storage facility, a 55-hectare solar park and a gas-fired power station are also set to be built. With an output of 400 MWand a capacity of over 700MWh, the battery storage facility will stabilise the grid when there is no wind or sunlight.”

Germany has emerged in the past few years as one of Europe’s most attractive markets for large-scale BESS investment, with large opportunities in its wholesale energy market (Europe’s deepest) and helpful regulatory changes including an exemption from charge-discharge grid fees for BESS projects put into operation by 2029.

Those opportunities are set to grow as the country deploys more wind and solar, and solar trade body BSW-Solar recently called for 100GWh of BESS deployments by 2030.

We recently caught up with German BESS platform Terra One to discuss the market drivers, regulatory challenges and the trade-offs when opting for a merchant or toll-based strategy in the country.

(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

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