Helion Energy, a nuclear fusion startup backed by OpenAI’s Sam Altman, still has to prove it can produce electricity to serve data centers and other customers. But investors seem confident it can ...

A nuclear fusion startup just hit a hot new milestone. Everett, Washington-based Helion Energy announced that its nuclear fusion prototype reactor achieved plasma temperatures of about 270 million ...

Fusion energy group Helion said the company has completed a $465-million Series G investment round, increasing the Everett, Washington-based group’s valuation to $15.5 billion. Helion is among dozens ...

Beyond the massive curtains of its Everett, Wash., R&D facility, Helion is betting that a downsized testbed can answer key ...

Helion raises $465 million in a Series G round, boosting its valuation to $15.5 billion as it advances commercial fusion ...

Nuclear fusion startup Helion announced it has begun work on the site of its first power plant, located in Chelan County, Washington. The company claims the plant it calls Orion could come online as ...

Nuclear fusion energy company Helion said on Thursday it raised $465 million in its latest funding round, led by Thrive ...

SAN FRANCISCO (Reuters) -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 ...

Artificial intelligence (AI) group OpenAI is reportedly discussing buying electricity from Helion Energy, the fusion startup company based in Everett, Washington. Sources told POWER that a deal would ...

Fusion energy developer Helion Energy announced it has begun initial earthwork and construction on the site of Orion power plant in Malaga, in the US state of Washington. The plant will provide ...