Authored by Haley Zaremba via OilPrice.com,
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Global VC funding for nuclear fission and fusion startups has already topped $4.5 billion across 81 companies in 2026, on pace to beat 2025's $6.2 billion record.
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Big Tech figures including Sam Altman and Bill Gates are pouring money into fusion to keep up with AI's ballooning electricity demand.
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Critics warn the startup boom is skipping voluntary safety guardrails and pulling attention from proven large-scale reactor technology.
Venture capitalists are taking a major interest in nuclear energy start ups. Funding is surging for both nuclear fusion and fission firms as the technology becomes an increasingly essential part of a feasible pathway toward sustainable energy security in the face of the artificial intelligence boom.
According to reporting by Axios, global investment in both fission and fusion has topped USD $4.5 billion across 81 companies in 2026 so far. At this pace, by year’s end, this year will shatter 2025’s previous record of $6.2 billion for 93 companies.
Data center hyperscalers are driving up energy demand projections to previously unthinkable levels that will require an all-of-the-above approach to energy development that is likely to prominently feature nuclear energy as a round-the-clock source of zero-emissions electricity. In the United States, t
