Helion is one of three developers to amass $1 billion in investments, according to the 2025 annual report by the Fusion Industry Association. The company is aiming to build the first U.S. power plant to harness fusion energy for the grid at a site in Malaga, Washington, which is roughly halfway between Seattle and Spokane.

Helion Energy, a startup backed by OpenAI's Sam Altman and SoftBank's venture capital arm, has started construction on a site for a planned nuclear fusion power plant that will supply power to Microsoft data centers by 2028,

Helion Energy announced today that it has broken ground on what it hopes will be the world’s first commercial fusion energy plant, designed to harness the same nuclear reactions that fuel the sun and stars.