The OpenAI leader and SoftBank, who are leading the mammoth Stargate effort, have poured hundreds of millions into Helion.

Helion, whose board is chaired by OpenAI CEO Sam Altman, announced an "oversubscribed and upsized" Series F funding round yesterday. With the addition of $425 million to its coffers, the startup ...

Helion, a startup working to generate electricity from nuclear fusion, on Tuesday said it has raised $425 million in venture ...

US-based Helion Energy recently unveiled its latest prototype in Everett, Washington, before announcing a $425 million funding round this week. Among the investors was Mr Altman, who has ...

The firm's latest Series F round brings the total investment into Helion over the $1 billion line, and it's aiming to begin delivering power from a single fusion 50-MW plant to Microsoft by 2028.

Few fusion startups have been as closely watched as Helion. The 12-year-old company is backed by Sam Altman, rumored to be in talks with OpenAI, and has a deal to supply Microsoft with electricity ...

Helion’s facility in Everett, Wash. (Helion Photo) Helion Energy announced a $425 million funding round that will help the Seattle-area fusion company chase the “Holy Grail” of clean energy.

Fusion energy company Helion has secured a substantial $425m in series F funding, aimed at accelerating the commercialisation of its fusion technology. The funding round saw contributions from a ...

Helion Energy Inc., a startup working to develop commercial fusion reactors, today announced that it has closed a $425 million late-stage funding round. The Series F deal included the ...