EVE Energy commissions 400 MWh storage project using 628Ah cells
Author: PPD Team Date: February 12, 2026
EVE Energy Co. has commenced operations at a 400 MWh energy storage facility in Hebei province, China, deploying its 628Ah ultra-large battery cells at grid scale for the first time. The project marks the transition of the technology from pilot testing to commercial application.
The facility forms part of the Ruite New Energy Lingshou 200MW/400MWh independent energy storage project. It comprises 80 units of the company’s Mr. Giant 5 MWh direct-current energy storage systems integrating the 628Ah cells, along with 40 integrated power conversion cabins.
EVE Energy stated that cumulative production of its 628Ah cells has exceeded 1 million units, indicating manufacturing scale-up and readiness for utility applications. The system uses a stacking process and high-toughness separators, which the company said are intended to enhance safety, operational efficiency and lifecycle performance while reducing the levelized cost of storage.
At the commissioning ceremony, EVE Energy signed a strategic cooperation agreement with Beijing Guowang Power Technology Co. covering 10 GWh of large battery systems for future deployment. EVE Energy stated that the agreement reflects a shift from project-specific delivery to a longer-term cooperation framework. The company indicated that it will continue development of its large-format battery technology while expanding manufacturing and service capabilities for global energy storage markets.
Photo source: EVE Energy