China's flow battery sector has received a significant policy upgrade. Seven government departments have issued the New Battery Industry Development 15th Five-Year Plan, which for the first time lists flow batteries alongside lithium-ion and sodium-ion batteries as part of the same industrial framework. According to Zhonghe Energy Storage (z-henergy), the plan moves flow batteries from the 'demonstration' category into the 'industry' category.
From supplementary technology to synergistic industry
The shift is more than semantic. Previous energy storage plans often treated flow batteries as a supplementary option for specific applications. The new plan describes them as a 'synergistic industry' — a technology family that can scale alongside mainstream battery chemistries. The article argues this is a turning point for long-duration energy storage (LDES) in China.
Technical targets set by the plan
The plan sets direction for several performance and cost goals: raising stack current density, lowering electrolyte costs, and developing multiple flow chemistry routes. It explicitly names all-vanadium, iron-based, zinc-based and organic flow batteries as technology pathways to pursue.
'Flow batteries were written into the industry section for the first time, not the demonstration section.' — Zhonghe Energy Storage
Why it matters for LDES
Flow batteries are among the most mature LDES options for multi-hour storage, but high costs and limited manufacturing scale have constrained deployment. A national industrial plan can support supply-chain investment, standardisation and cost reduction. The plan does not by itself fund projects, but it signals that flow batteries are now part of China's long-term battery industrial strategy rather than a niche research topic.
For global LDES observers, the plan is a marker of China's intent to compete across multiple storage chemistries. It also reinforces the view that the flow battery market may be entering a scale-up phase, with policy attention shifting from pilot projects to industrial capability.
This article was assisted by AI analysis. Please refer to the original source for official information.