Google’s new 1.9GW clean energy deal includes massive 100-hour battery

Google will build its first Minnesota data center in Pine Island, powered by 1.9 gigawatts of clean energy including wind, solar, and a groundbreaking 300-megawatt battery from startup Form Energy. The iron-air battery can deliver power for 100 hours straight, making it the world's largest at 30 gigawatt-hours, though it's less efficient than lithium-ion alternatives. Form Energy's innovative technology stores energy by rusting and deoxidizing iron, costing just $20 per kilowatt-hour—three times cheaper than traditional batteries.