Flow batteries
Compared to water and sand batteries, flow batteries are a more technically complicated renewable energy storage solution.
They consist of two tanks of liquid electrolyte solution. In one tank, the solution is positively charged, and in the other, it is negatively charged. These solutions are pumped into a cell, where they remain separated by a membrane.
Ferro-Alloy Resources Limited (LON:FAR) is developing the giant Balasausqandiq vanadium deposit in Kyzylordinskaya oblast of southern Kazakhstan. The ore at this deposit is unlike that of nearly all other primary vanadium deposits and is capable of being treated by a much lower cost process.