EVE unveils world’s largest BESS factory, focusing on 628Ah battery cell production

China’s EVE Energy has announced the official launch of the first phase of its 60 GWh battery energy storage factory in Jingmen City, Hubei Province. The facility unveiled on December 10 is considered the world’s largest BESS manufacturing plant. It is also the first factory to mass produce 600Ah+ high-capacity battery cells.

The newly operational production line, with an annual capacity of 17 GWh, will focus on manufacturing of 628Ah lithium iron phosphate (LFP) cells called MB56, each with a single-cell energy of 2.009 kWh and an energy efficiency exceeding 96% at 25°C.

EVE Energy’s journey toward high-capacity storage began in 2022 with the introduction of its 560 Ah cells. Over the past year, the company has achieved significant advancements in capacity, cost efficiency, energy density, safety, and integration.

The MB56’s development was underpinned by collaboration with Professor Yang Hanxi’s team from Wuhan University, leveraging an electrochemical current collector model to optimize design, enhance thermal management, and reduce cell resistance and overheating risks. The integration of “smart cell” technology enables real-time monitoring of lifecycle parameters such as temperature and gas levels, ensuring enhanced safety.

The factory incorporates more than 80 equipment technologies, enabling fully automated and highly efficient production. With a single-line capacity of 15 GWh, the facility can produce 1.5 cells per second, assemble four battery packs per minute, and manufacture up to 40 5 MWh containerized storage systems daily.

Jingmen’s industrial ecosystem and geographical advantages allow for optimized supply chain integration, improving logistical efficiency and reducing costs. Advanced quality management systems, aided by AI and digital monitoring, ensure defect rates remain at a billionth-level precision.

The MB56 cells cater to the growing global demand for long-duration energy storage, fueled by increasing renewable energy adoption and the rise of storage projects requiring extended performance. EVE Energy’s large-capacity cells promise to reduce system costs, improve integration simplicity, and enhance safety and energy density, supporting the industry’s shift toward greater efficiency.

EVE Energy’s BESS manufacturing capacity will stand at 50 GWh by the year’s end, alongside 81 GWh of EV battery production capacity. In 2025, the manufacturer aims for a cumulative production capacity of 220 GWh and a shipment target of 101 GWh in combined energy storage and EV batteries, with storage solutions accounting for over half.