This Twitter thread gives you some information and pictures about the Dalian 200 MW / 800 MWh Rongke Power Vanadium Redox Flow Battery.
The biggest Battery in the world
Flow battery systems and their future in stationary energy storage – Policy brief
On 9th July 2021, at the Summer Symposium of the International Flow Battery Forum, the FLORES Network of Flow-Battery Research Initiatives held a workshop to identify research
needs, barriers, potential markets and impacts of flow batteries. The outcomes, including resulting policy recommendations, are provided here.