en.Wedoany.com Reported - On June 15, the 100MW/400MWh independent energy storage station in Guantao County, Handan, Hebei, successfully completed acceptance and officially entered commercial operation. The project was jointly built by members of the Large Energy Storage Ecological Innovation Consortium led by Hunan Corun New Energy Co., Ltd. (hereinafter referred to as "Corun") and is one of the large-scale independent energy storage projects in Hebei Province.

After commissioning, the station will participate in diversified application scenarios such as grid peak shaving, capacity leasing, and electricity spot trading, enhancing the integration of new energy and supporting the construction of a new power system in the region. The project covers an area of approximately 23,000 square meters and deploys 64 energy storage cabinets, with a total storage capacity of 400MWh. Based on design operating conditions, the project is estimated to generate an annual discharge of about 182 million kWh and consume approximately 210 million kWh of new energy annually, effectively promoting regional new energy consumption and optimizing power resource allocation.

New Generation Large-Capacity Cells Achieve Large-Scale Application

In terms of core equipment, the project adopts a new generation of 392Ah large-capacity energy storage cells, achieving large-scale application. It is understood that the energy storage cabinets used in the Guantao station are independently supplied by Corun, featuring the 392Ah ultra-large-capacity energy storage cells. Compared to the industry mainstream 314Ah cells, this cell offers a 25% increase in single-cell capacity, an energy density exceeding 420Wh/L, and a DC-side energy conversion efficiency of over 94.5%. The large-scale application of 392Ah cells at the Guantao station marks the first large-scale deployment of this large-capacity cell in Corun's energy storage business layout. This is also the world's first large-scale application of 392Ah cells.

Leveraging the core SEI film self-repair technology, the 392Ah cell maintains an ultra-long cycle life while improving the overall energy efficiency of the energy storage system to 95%. This not only effectively increases energy density per unit space but also balances the core advantages of high safety, high energy efficiency, and low per-kWh cost. After applying this cell, the Guantao station uses a 6.25MWh liquid-cooled container system, reducing the footprint by 14.9% compared to traditional solutions. Combined with IP67-level PACK protection design, it ensures comprehensive operational safety while reducing the system's per-kWh cost by 15%. In terms of safety performance, the cell employs dual insulation technology to build a safety barrier and has successfully passed multiple national mandatory and recommended standards, including GB44240 and GB/T36276.

Smart EMS System Empowers Refined Energy Storage Operations

Beyond the large-capacity, high-efficiency hardware configuration, the project emphasizes intelligent operational capabilities. The station simultaneously builds a 110kV step-up substation and deploys a smart EMS energy management system. As the "smart hub" of the station's operation, the energy management system is based on a dual-network architecture of control network and data network, incorporating the Zero-Carbon Ark digital operation and maintenance platform to achieve functions such as equipment status sensing, operational monitoring, safety warnings, strategy optimization, and intelligent dispatch.

Relying on advanced data analysis and optimization algorithms, the system can dynamically optimize charging and discharging strategies based on grid load changes, new energy output fluctuations, and market price signals, achieving refined management and efficient operation of energy storage resources. While ensuring safe and stable station operation, the system further enhances the operational efficiency and market value of energy storage assets.

The project leader stated: "After the Guantao 400MWh independent energy storage station is commissioned, it will fully leverage the advantages of rapid response and flexible regulation of energy storage. Through the smart EMS system, it will achieve precise dispatch and efficient operation of energy storage resources, undertake tasks such as nearby new energy consumption and grid auxiliary services, and provide more reliable and flexible support for the safe and stable operation of the regional power system."

Corun's Energy Storage Strategy Accelerates Implementation

The completion and commissioning of the Guantao 400MWh independent energy storage station represents a concentrated implementation of the "large-capacity cells, efficient system integration, smart energy management" technical route. In terms of project progress, the Guantao station was successfully connected to the grid on April 27, innovatively applying 392Ah energy storage cells with an energy conversion efficiency exceeding 94.5%, achieving comprehensive breakthroughs in energy storage system safety, efficiency, and cost optimization.

In terms of funding, Guantao Xuneng signed a project financing loan contract with Industrial Bank for a loan amount of 352 million yuan, with a loan term of 11 years, for the construction of the Guantao County independent energy storage station project. Corun invests in the construction of energy storage stations through its equity-participated energy storage industry fund, responsible for producing energy storage cabinets and integrated systems during the construction phase, generating sales revenue and profits from energy storage products. Following the expansion of the Kaibo Energy Storage Industry Fund to 1.402 billion yuan in 2025, the company, in January 2026, jointly established a total 2 billion yuan energy storage fund with large state-owned enterprise Tianjin Binhai Construction Investment and its subsidiary Binhai New Energy, further strengthening the "resources-technology-project-product-operation-capital" ecological closed loop.

In terms of project layout, the company's energy storage reserves continue to expand, with reserves and independent energy storage projects under development in Shandong, Hebei, Henan, and other regions exceeding 10GWh, fully shaping a large-scale energy storage development pattern. From the company's overall performance, in the first quarter of 2026, Corun achieved operating revenue of 909 million yuan, a year-on-year increase of 2.50%; net profit attributable to the parent company was 38.7507 million yuan, a year-on-year increase of 4.88%, continuing the growth trend of the energy storage business. In 2025, Corun's energy storage product revenue reached 1.748 billion yuan, a substantial year-on-year increase of 1668.95%, accounting for 30.42% of total revenue, becoming the core engine driving performance growth.

Jointly Building a Green and Low-Carbon Future

Building on the leapfrog development achieved in 2025, Corun is accelerating the large-scale implementation of its energy storage business. Corun will join hands with consortium members, using energy storage projects like Guantao as key leverage points, to promote the deep integration of green energy and digital technology in areas such as new energy storage, zero-carbon parks, and computing-electricity synergy, forming more replicable and scalable green and low-carbon solutions, injecting new momentum into energy transition and high-quality development.

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