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

> **Platform:** [SPIDITS AI](https://spidits.com/) — Real-Time AI News & Market Intelligence  
> **Published:** 2026-06-04T18:54:08.000Z  
> **Category:** FUNDING  
> **Impact Score:** 180/100  
> **Primary Source:** [TechCrunch Venture](https://techcrunch.com/2026/06/05/reid-hoffman-is-leaving-microsofts-board-to-go-founder-mode-with-startup-manus)  
> **Canonical Citation:** [https://spidits.com/timeline/helion-the-sam-altman-backed-fusion-startup-raises-465m-to-build-a-power-plant-for-microsoft](https://spidits.com/timeline/helion-the-sam-altman-backed-fusion-startup-raises-465m-to-build-a-power-plant-for-microsoft)

## Executive Summary
Fusion startup Helion is racing to complete a power plant for Microsoft by 2028. A fresh infusion of cash should help with that.

## Key Entities & Companies
- **Microsoft AI**

## Referenced Coverage & Sources
- **[TechCrunch Venture](https://techcrunch.com/2026/06/05/reid-hoffman-is-leaving-microsofts-board-to-go-founder-mode-with-startup-manus)**: Reid Hoffman is leaving Microsoft's board to go 'founder mode' with startup Manas — _After a very profitable decade on Microsoft's board, Reid Hoffman is stepping down to focus on his AI drug discovery startup Manus._

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*Synthesized by SPIDITS AI Market Intelligence Desk. Track live AI news, model releases, and funding: [https://spidits.com](https://spidits.com)*