This is very light on the details of their batteries, unfortunately.
Iron-air batteries have been known for awhile now, the challenge is making them commercially viable. If I recall, their efficiency is awful for one. There's a company called Form Energy in West Virginia that is supposedly nearly done with a factory to build them for grid storage.
Iron-air batteries have been known for awhile now, the challenge is making them commercially viable. If I recall, their efficiency is awful for one. There's a company called Form Energy in West Virginia that is supposedly nearly done with a factory to build them for grid storage.