Fusion startup Helion is developing new semiconductors that could double output of its power plants |

Fusion startup Helion has been awarded $175 million in federal funding to research, develop, and manufacture advanced semiconductors and power electronics for its fusion power…

Helion, the Sam Altman-backed fusion startup, raises $465M to build a power plant for Microsoft |

Helion, the fusion startup backed by Sam Altman, announced on Thursday that it had raised $465 million in a new funding round that values the…

Sam Altman-backed fusion startup Helion in talks to sell power to OpenAI |

OpenAI CEO Sam Altman is stepping down as board chair of the Helion — the fusion startup he backs — amid reported talks between the…

Fusion startup Helion hits blistering temps as it races toward 2028 deadline |

Fusion energy startup Helion announced Friday that it has hit a key milestone in its quest for fusion power. Plasmas inside the company’s Polaris prototype…