Form Energy
Form Energy is a Long-Duration Storage company founded in 2017 and based in Somerville, USA. It has raised $1.5B in total funding, most recently a Series G in 2026.
Form Energy was founded in 2017 and is headquartered in Somerville, USA. The company develops and manufactures iron-air battery systems designed for grid-scale deployment, storing electricity for durations exceeding 100 hours using iron, water, and air with a target cost below $20/kWh. The company operates Form Factory 1 in Weirton, West Virginia. Revenue generation is derived from deployment contracts; Form has secured 14+ GWh of planned deployments, including a 300 MW / 30 GWh deal with Xcel Energy for a Google data-center project in Minnesota. As of August 2026, Form Energy has raised $1.516 billion across multiple funding rounds, including a Series G round of $750 million announced on 19 August 2026.
Long-duration energy storage is critical infrastructure for grid decarbonization and data-center electrification at scale. Form Energy's iron-air chemistry addresses a fundamental supply constraint in lithium-ion batteries by eliminating dependence on cobalt and lithium while targeting sub-$20/kWh economics—a cost target required for economical seasonal storage. The $750 million Series G raise and 14+ GWh of utility-scale deployment commitments demonstrate market validation at scale and underscore investor confidence in non-lithium storage pathways amid rising battery demand and grid bottlenecks.
formenergy.com ↗·Long-Duration Storage·USA·private 
