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AI in Climate / Energy2 articles
Latest news, updates, and announcements from Helion.
FundingJun 23, 2026
Helion raises $465M Series G at $15.5B valuation to commercialize fusion energy for AI data centers.
Helion, a fusion energy developer, announced a $465 million Series G round led by Thrive Capital, bringing its post-money valuation to $15.5 billion. New investors include Alta Park Capital, Anti Fund...
FundingJun 5, 2026
Helion raises $465M at $15.5B valuation as AI data-center power demand fuels fusion race
Nuclear fusion startup Helion has raised $465 million in a Series G round led by Thrive Capital, nearly tripling its valuation to $15.5 billion from $5.4 billion in January 2025. The round includes pa...