In 2023, Helion announced the world’s first power purchase agreement (PPA) that will provide energy from the plant to Microsoft by 2028, with Constellation Energy serving as power marketer. With site work now underway, Helion remains on track to meet that goal, according to a press release.

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,

Nuclear fusion energy is one step closer to becoming a reality after Helion Energy broke ground Wednesday on what could become the world's first commercial fusion power plant. Construction in Washington state comes after Helion raised $1 billion for its nuclear fusion plant and signed an agreement to provide electricity to Microsoft by 2028.