June 10, 2026 – Recently, the Shengde Erdengtu hydrogen energy storage station in Huade County, Ulanqab City, 90MW/360MWh electrochemical energy storage unit was successfully connected to the grid and put into operation, marking the official entry of China’s first grid-side “electrochemical energy storage + hydrogen energy storage” independent demonstration project into the commercial operation phase. The project was jointly developed by China Hydrogen Energy Group Co., Ltd. and Shanghai Xinran Compressor Co., Ltd., leveraging domestic core hydrogen energy equipment to empower the construction of long duration energy storage (LDES) systems, supporting Inner Mongolia in building a safe and efficient new-type power system model project.
According to the project planning scheme, the ESS power station has an overall total installed capacity of 100MW/400MWh, adopting a phased commissioning mode. Currently, the 90MW/360MWh electrochemical energy storage section has been connected to the grid for power generation first, while the remaining 10MW/40MWh hydrogen energy storage system has entered the final stage of equipment integrated commissioning. Among them, the full set of domestic core equipment including hydrogen compressors supplied by Shanghai Xinran has been fully installed, laying a solid hardware foundation for the project to achieve long-cycle, large-capacity green hydrogen energy storage operation.
As a national-level key demonstration project for energy transition, the project innovatively created a short-duration electrochemical energy storage + long-duration hydrogen energy storage complementary operation mode, establishing a multi-level and multi-dimensional energy storage system featuring “second-level response, hour-level regulation, and cross-day and cross-seasonal storage,” effectively addressing industry pain points such as the intermittency, fluctuations, and difficulty in absorbing new energy generation. Among them, the electrochemical ESS can achieve millisecond-level fast frequency regulation, leveling out fluctuations in wind and solar power output in real time, ensuring instantaneous grid stability; the hydrogen ESS relies on the core equipment of the Xinran XR-3.8/(10-15)-29 hydrogen compressor to convert surplus new energy electricity from the grid into green hydrogen storage, with cross-seasonal and long-cycle energy dispatch capabilities, making up for the application shortcomings of conventional short-duration energy storage.
Located in Huade County, Ulanqab City, Inner Mongolia, the project benefits from abundant local wind and PV resources, providing high-quality clean energy support for large-scale green hydrogen production. On-site, the integrated commissioning of Xinran hydrogen compressors, hydrogen storage tanks, electrolyzers, and other core equipment has been completed, opening up the entire closed-loop industry chain of hydrogen production, compression, storage, and power generation . To cope with Inner Mongolia’s extreme conditions of severe cold and sandstorms, both parties jointly optimized and iterated equipment performance, achieving 100% independent and controllable core components and completely eliminating reliance on imports of similar equipment. The equipment can operate stably in -30°C extremely cold environments , setting a benchmark for the localisation of hydrogen energy equipment and its adaptation to extreme operating conditions.
In terms of environmental protection and industrial benefits, the project boasts prominent advantages. After full-scale commercial operation, it can absorb over 500 million kWh of new energy electricity annually, reducing standard coal consumption by roughly 150,000 mt and CO2 emissions by 400,000 mt, achieving remarkable ecological emission reduction results. Meanwhile, the high-quality green hydrogen produced can be widely used as industrial raw materials, transportation fuel, and district heating, spurring the cluster development of green chemical industries such as green ammonia and green methanol, and helping Inner Mongolia build a national demonstration base for new energy equipment manufacturing and green hydrogen production and application.
The successful grid connection of this electricity-hydrogen hybrid energy storage project fully verifies the feasibility and practicality of the electricity-hydrogen coupling energy storage technology route, offering a replicable and scalable practical model for the construction of new-type power systems nationwide. The industry chain synergy model between China Hydrogen Energy Group and Shanghai Xinran Compressor also provides an excellent case for industry-university-research-application collaboration and upstream-downstream integrated innovation in the hydrogen ESS sector. With the subsequent official operation of the hydrogen energy storage system, the project will be upgraded into a comprehensive energy hub integrating grid peak shaving and frequency regulation, LDES, and green hydrogen production, continuously delivering the mature "Inner Mongolia Solution" for new energy consumption and green transformation of the energy structure.
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