China is seeing a wave of new battery production projects that could shape the EV supply chain over the next few years. On November 27, a proposal for a 1 GWh solid-state battery plant in Jiangxi entered the public approval process, according to Sina. At the same time, other provinces announced large-scale cathode and cell production plans, including a 40,000‑ton lithium-iron/manganese phosphate (LMFP) cathode project in Ya’an and a 3 GWh high-energy-density cylindrical cell line in Shandong, highlighting expanding capacity across multiple battery technologies.

A subsidiary of Pure Lithium New Energy leads the Jiangxi 1 GWh project. The facility would occupy more than 68,000 square meters in a high‑tech park in Huko County and produce 1 GWh of solid-state storage batteries annually once completed. Public documents indicate that the firm plans to develop these solid-state cells for EV use, with small-scale testing in 2026 and potential vehicle integration trials in 2027. If successful, this could become one of the earliest full-solid-state battery applications in Chinese electric vehicles.

In parallel, Sanwei Battery (Shaanxi) is advancing a separate solid-state battery initiative in Jiangxi’s Yugan High-Tech Zone. According to reports, the project plans to build a solid-state battery R&D centre, a modern smart manufacturing base, and supporting infrastructure. The total investment is 17 billion yuan (approximately 2.43 billion USD), and once fully operational, the plant will achieve 2 GWh of annual solid-state battery production, targeting EV applications, according to Ofweek. Sanwei Battery, established in December 2024, specialises in battery manufacturing, sales, energy storage services, and electronic/energy materials, including solid-state lithium batteries. The company is jointly held by Guorui Supply Chain Company (70%) and Sanwei Guoheng (Shaanxi) Battery Energy Technology Partnership (30%), investment entities in the battery sector. Despite operating in the EV battery supply chain, these companies are independent suppliers, not directly affiliated with automakers.

Sanwei Battery is expanding across multiple locations. In Zhangjiakou, Hebei, the Sanwei Solid-State Speciality Battery Production Base Project is underway within an automotive industrial park, producing 1 GWh of solid-state lithium batteries. Another subsidiary, Sanwei (Longyan) Battery Technology Co., Ltd., has received environmental approval for a 1 GWh solid-state lithium battery project, further supporting EV applications.

These developments, combined with the Jiangxi Pure Lithium project, underscore China’s growing focus on solid-state battery technology for electric vehicles. Alongside ongoing LMFP cathode material and cylindrical cell expansions in other provinces, they reflect a broader strategy to build EV-grade battery capacity across multiple technologies. While Sanwei Battery and Pure Lithium New Energy operate independently of automakers, their projects are designed to feed the EV supply chain once testing and integration are completed.