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

Fusion Startup Helion Nearly Triples Valuation to $15.5 Billion in Thrive-led Round

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 deliver. The Everett,…