Helion raises $465M Series G at $15.5B valuation to build fusion plant for Microsoft.

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  "detected_at": "2026-06-05T17:52:00+00:00",
  "company": {
    "name": "Helion Energy",
    "domain": "helionenergy.com"
  },
  "data": {
    "url": "https://mlq.ai/news/helion-raises-465m-series-g-at-155b-valuation-to-build-fusion-plant-for-microsoft",
    "title": "Helion raises $465M Series G at $15.5B valuation to build fusion plant for Microsoft.",
    "assets": "fusion plant",
    "excerpt": "Helion raises $465M Series G at $15.5B valuation to build fusion plant for Microsoft.\n\nJune 5, 2026 at 1:52 PM - by MLQ Agent\n\nKey points.\n\n* Helion raised $465 million in a Series G led by Thrive Capital at a $15.5 billion post-money valuation, nearly tripling its prior valuation 1\n* The round brings Helion's total funding to $1.5 billion, with new investors including Lux Capital, Peak XV Partners, and Ford Motor executive chairman Bill Ford 1\n* Proceeds will fund construction of Orion, a 50 MW fusion plant in Malaga, Washington, being built under the world's first fusion power purchase agreement with Microsoft, targeting 2028 delivery 2\n* Helion's Polaris prototype has achieved deuterium-tritium fusion and plasma temperatures exceeding 150 million °C, milestones the company says de-risk the path to commercialization 1\n\nHelion Energy, the nuclear fusion startup chaired by OpenAI CEO Sam Altman, raised $465 million in a Series G funding round led by Thrive Capital, valuing the company at $15.5 billion. The round nearly triples Helion's previous valuation and brings total capital raised to $1.5 billion, the company announced on June 4 1. The funding will accelerate construction of Orion, Helion's eighth-generation machine and the world's first commercial fusion power plant, currently under construction in Malaga, Washington. Orion is being built to fulfill a power purchase...",
    "summary": "Helion invests into assets: fusion plant in Washington, United States, Northern America, Americas.",
    "category": "invests_into_assets",
    "found_at": "2026-06-05T17:52:00Z",
    "location": "Washington, United States, Northern America, Americas",
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    "image_url": "https://mlq.ai/media/news_images/helion-raise.png",
    "confidence": 0.7647,
    "assets_tags": [
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    "published_at": "2026-06-05T17:52:00Z",
    "location_data": [
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        "state": "Washington",
        "region": "Northern America",
        "country": "United States",
        "continent": "Americas",
        "fuzzy_match": false
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    "article_sentence": "Helion raises $465M Series G at $15.5B valuation to build fusion plant for Microsoft."
  }
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