Form Energy’s first commercial product is a rechargeable iron-air battery capable of delivering electricity for 100 hours at system costs competitive with conventional power plants and at less than 1/10th the cost of lithium-ion. Made from iron, a safe, cheap and abundant mineral, this front-of-the-meter battery can be used continuously over a multi-day period and will enable a reliable, secure, and fully renewable electric grid year-roundhttps://solarbuildermag.com/energy-storage/form-energy-says-its-iron-air-battery-is-a-multi-day-energy-storage-system/