EVE Energy Delivers World’s First 400MWh Energy Storage Project with 628Ah Ultra-Large Cells

EVE Energy has achieved a historic breakthrough in the energy storage industry by completing the world’s first 400MWh project powered by 628Ah ultra-large cells. The project, part of Phase II of the Ruite New Energy initiative in Lingshou, Hebei Province, demonstrates the scalability, reliability, and global potential of large-cell technology.

Breaking New Ground in Large-Cell Energy Storage

As the demand for clean and reliable energy accelerates, cells exceeding 600Ah are emerging as a critical enabler of higher energy density, improved safety, and reduced lifecycle costs. On September 8, the 200MW/400MWh standalone energy storage project—jointly developed by EVE Energy and State Grid Power Technology—was successfully energized, marking the first-ever large-scale deployment of 628Ah cells at a 100MWh-level facility.

Rapid Deployment and Reliable Operation

EVE Energy demonstrated exceptional execution by delivering 80 Mr.Giant energy storage systems and 40 integrated converter cabins within just one week. From stringent quality control to commissioning and operational support, the project highlights the maturity and feasibility of ultra-large battery systems.

Supporting the Grid and Green Transition

The project enhances grid peak-shaving, frequency regulation, and renewable energy integration in Hebei Province, significantly improving power supply reliability. It also provides valuable practical experience for scaling large-cell solutions, supporting China’s carbon-reduction and energy transition goals.

Global Expansion of “Mr.Giant”

Beyond China, EVE Energy’s Mr.Giant storage systems, equipped with 628Ah cells, began overseas shipments to Australia and Europe on September 10. Known for their minimalist design, efficiency, low noise (≤65dB), and suitability for long-duration (4+ hour) storage, these systems are gaining international recognition.

Future Outlook

By successfully realizing both domestic deployment and global delivery of 628Ah-based systems, EVE Energy has propelled the energy storage sector into a new phase of efficiency, reliability, and scalability. Moving forward, the company will continue advancing big-battery technology and partnering worldwide to accelerate the green energy transition.

Source: EVE Energy