Technology

I wanted to research it myself since I didn't know how Redbox flow batteries operate. It is two giant tanks of liquid energy. When there's extra electricity from wind or solar, pumps move special vanadium-based liquids through a stack of cells, storing that energy as a chemical change. When electricity is needed later, the process runs in reverse and the liquids generate power for the grid. Unlike lithium batteries, the energy is stored in the liquid tanks, so making the battery bigger is mostly a matter of building larger tanks. The Swiss project will store about 2.1 GWh of energy—enough to help balance renewable power on a massive scale—and was chosen partly because redox-flow batteries are non-flammable, long-lasting, and can be cycled tens of thousands of times with little degradation