On 8 September, the world's first 400MWh energy storage power station based on 628Ah large energy storage batteries achieved successful one-time power delivery.
Located in Lingxiu County, Shijiazhuang, east of the Taihang Mountains, the 200MW/400MWh stand-alone energy storage station has officially begun operation. This marks the world's first large-scale deployment of a 600Ah+ large energy storage battery in a 100MWh project, signifying that the energy storage industry has entered the era of “2 kWh per battery cell”.
Storage project at Hebei, with EVE 628Ah+ Cell
Large batteries are widely regarded as the key pathway to reducing the levelized cost of storage (LCOS). By increasing single-cell capacity and reducing system integration complexity, these batteries can significantly lower the total lifecycle cost of energy storage systems. In 2024, global energy storage shipments surpassed 300 GWh, marking the final sprint before the industry enters the TWh era. As policy subsidies gradually phase out, market competition now increasingly depends on technological strength and product performance.
EVE Energy has achieved three major technological leaps in the large energy storage battery sector - from concept unveiling to mass production and pioneering engineering applications - driving the industry into a new phase of high-quality development fueled by innovation. In October 2022, the company introduced the LF560K concept large energy storage battery, ushering in the “500Ah+” era. In January 2024, it globally premiered the 628Ah “Mr. Big” large energy storage battery, achieving a single-cell energy capacity exceeding 2 kWh. By September 2025, EVE commissioned the world’s first 400MWh-scale power station using these batteries, transitioning from lab to grid in just 20 months.
The value of large energy storage batteries is backed by solid data. Operational data from the Jingmen demonstration project in Hubei Province showed system energy efficiency consistently above 95.5%, while maintenance components were reduced by 50% and operational costs lowered by 30%. In July 2025, EVE’s 600Ah+ battery became the world’s first to be fully certified under China's new national standards. The following month, the company secured a 154MWh order from China Electrical Equipment Group - the world’s first commercial order for 600Ah+ large energy storage batteries.
Behind this technological leadership lies EVE’s philosophy of “long-termism”. Chairman Liu Jincheng emphasizes, “A battery is a living entity. We approach each one with reverence, ensuring every cell is crafted to perfection.” This reverence for technology is reflected in the company's sustained R&D investment: the company’s sustained R&D commitment is reflected in its team of over 6,000 researchers, cumulative R&D investment exceeding RMB 10 billion since 2020, more than 10,000 patents, and involvement in 25 national-level projects. At its 60GWh super factory in Jingmen, extreme manufacturing principles enable production of 1.5 batteries per second with defect rates controlled at the PPB level, ensuring exceptional consistency and reliability.
With production bases advancing in Malaysia and Hungary, EVE Energy continues to optimize its global capacity layout. The company aims to reach 328GWh production capacity by 2027, supporting the worldwide energy transition. It has established deep partnerships with leading enterprises such as State Grid, China Southern Power Grid, Huaneng, Huawei, and Sungrow, while also making breakthroughs in overseas markets including Australia.
Industry analysis indicates that the first half of 2026 will witness a concentrated release of 500Ah+ batteries. Through its Lingshou project, EVE Energy demonstrates that large batteries are not a future concept but an ongoing reality. The deployment of this world-first 600Ah+ energy storage power station is not only a technological milestone but also an industry signal: the era of large batteries for energy storage has arrived.