Their data centers for artificial intelligence require a lot of energy, which is in short supply. So these companies are on ...

Opportunities to invest in commercial nuclear fusion are limited for now, but these companies stand to benefit from their ...

OpenAI CEO Sam Altman is stepping down as board chair of the Helion — the fusion startup he backs — amid reported talks between the two companies. If the figures in Axios’ report prove to be accurate, ...

Helion, a Washington-based fusion energy company, announced that its Polaris prototype has set new fusion industry benchmarks, becoming the first privately developed fusion energy machine to ...

Learn about fusion energy and some of the top companies investing in this potentially limitless clean power source.

Nuclear fusion may be closer to commercialization than previously thought, with private firms targeting operational reactors ...

Sam Altman recently asked OpenAI to lead a funding round for Helion after the nuclear-fusion startup began to run short on cash. Altman is one of Helion’s largest investors. Ahead of OpenAI's planned ...

Zap Energy says its ultimate goal is safe, clean energy from fusion. To help get there, it’s starting to build fission ...

Ahead of a planned IPO, Altman’s personal investments remain opaque, making it hard to spot any conflicts.

Polaris becomes first privately funded fusion energy machine to operate with deuterium-tritium fuel, sets record with plasma temperatures of 150 million degrees Celsius Helion, a Washington-based ...