markfickett t1_j6gb0qo wrote on January 30, 2023 at 2:57 AM

Reply to comment by sammnz in Scientists lower price of lithium's best competition - flow batteries - by 20%. Makes the battery effectively equal to or cheaper than lithium ion when spread over 30 years (flow battery lifetimes are effectively infinite with light repowering efforts). by PorkyPigDid911

Right, iron-air are designed for multi day grid storage. For example, when it's cloudy for a week, these batteries discharge previous excess solar back into the grid. More about Form Energy's batteries if that's what you were thinking of.