--- title: Form Energy Iron-air Battery: The 200 Best Inventions of 2023 description: Find out why Form Energy Iron-air Battery is one of the best inventions of 2023 canonical: https://time.com/collections/best-inventions-2023/6326968/energy-form-energy-iron-air-battery/ article:content_tier: free article:published_time: 2023-10-24T11:00:35.000Z article:modified_time: 2026-03-31T05:11:52.960Z og:title: Form Energy Iron-air Battery: The 200 Best Inventions of 2023 og:description: Find out why Form Energy Iron-air Battery made this year's list og:url: https://time.com/collections/best-inventions-2023/6326968/energy-form-energy-iron-air-battery/ og:site_name: TIME og:image: https://static.time.com/v3/assets/bltea6093859af6183b/bltc22b9d6ccbc6f06c/698a419586f68e4d066f2e7b/best-inventions-2023-Form-Energy-iron-air-battery.jpg?branch=production&width=3840&quality=75&auto=webp&crop=16:9 og:image:width: 1200 og:image:height: 675 og:image:alt: Form Energy Iron-air Battery: The 200 Best Inventions of 2023 og:type: article twitter:card: summary_large_image twitter:title: Form Energy Iron-air Battery: The 200 Best Inventions of 2023 twitter:description: Find out why Form Energy Iron-air Battery made this year's list twitter:image: https://static.time.com/v3/assets/bltea6093859af6183b/bltc22b9d6ccbc6f06c/698a419586f68e4d066f2e7b/best-inventions-2023-Form-Energy-iron-air-battery.jpg?branch=production&width=3840&quality=75&auto=webp&crop=16:9 --- Oct 24, 2023 # Energy Innovation Form Energy Iron-air Battery by [Chris Stokel-Walker](/author/chris-stokel-walker/) ## Chris Stokel-Walker  When iron rusts, it swaps an electron for an oxygen molecule. Usually, that electron goes to waste. Form Energy’s batteries, which are the size of a washer-dryer set, take in oxygen to convert iron to rust, harnessing the resulting electrons and their energy. The devices can discharge power for about four straight days – lasting far longer than lithium-ion batteries, which, unlike Form Energy’s solution, require mining rare-earth minerals. “It’s like having a new tool in the tool chest,” says Mateo Jaramillo, co-founder and CEO of Form Energy. The company has five pilot projects in the works, including 10-megawatt power storage facilities in Minnesota and Colorado. ```json [{"@context":"https://schema.org","@type":"Article","@id":"https://time.com/collections/best-inventions-2023/6326968/energy-form-energy-iron-air-battery/","mainEntityOfPage":{"@type":"WebPage","@id":"https://time.com/collections/best-inventions-2023/6326968/energy-form-energy-iron-air-battery/"},"headline":"Energy Innovation","datePublished":"2023-10-24T11:00:35.000Z","dateModified":"2026-03-31T05:11:52.960Z","description":"","url":"https://time.com/collections/best-inventions-2023/6326968/energy-form-energy-iron-air-battery/","keywords":["list","franchise","ecommerce","Magazine","best inventions","Best Inventions 2023"],"thumbnailUrl":"https://static.time.com/v3/assets/bltea6093859af6183b/bltc22b9d6ccbc6f06c/698a419586f68e4d066f2e7b/best-inventions-2023-Form-Energy-iron-air-battery.jpg?branch=production&width=1200&quality=75&auto=webp&crop=1200:675&height=675","author":[{"@type":"Person","name":"Chris Stokel-Walker","jobTitle":null,"url":"https://time.com/author/chris-stokel-walker/"}],"creator":"Chris Stokel-Walker","articleSection":"","image":[{"@type":"ImageObject","url":"https://static.time.com/v3/assets/bltea6093859af6183b/bltc22b9d6ccbc6f06c/698a419586f68e4d066f2e7b/best-inventions-2023-Form-Energy-iron-air-battery.jpg?branch=production&width=1200&quality=75&auto=webp&crop=1200:675&height=675","width":1200,"height":675}],"publisher":{"@type":"Organization","name":"Time","url":"https://time.com/","logo":{"@type":"ImageObject","url":"https://time.com/images/logo.png","width":528,"height":156},"foundingDate":"March 3, 1923","sameAs":["https://www.facebook.com/time","https://www.instagram.com/time/?hl=en","https://twitter.com/time","https://www.pinterest.com/timemagazine"]}},{"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"item":{"@id":"https://time.com/collections/best-inventions-2023/6326968/energy-form-energy-iron-air-battery/","name":"Energy Innovation"}}]}] ```