FUSION FUNDING
Helion Raises $465 million in Latest Funding Round
Helion Energy closed a $465 million Series G led by Thrive Capital at a $15.5 billion post-money valuation, the largest fusion VC round of 2026. The raise brings Helion’s lifetime private funding to $1.5 billion and makes it the second most funded fusion company after Commonwealth Fusion Systems. The capital will expand U.S. manufacturing capacity and support deployment of Orion, the company’s first power plant, now under construction in Malaga, Washington.
Top Fusion Companies by Funding – October 2025
Fusion energy continues to attract record-setting investment. Updated for October 2025, The Fusion Report’s newest ranking of the top fusion companies based on total funding offers a data-driven look at the industry’s key players and financial landscape.
Fusion’s Funding Surge: A September Snapshot of Capital and Confidence
September 2025 has delivered a major jolt of momentum for the fusion sector. With over $900M in private raises, strategic tritium investments, and a €5.4B EU commitment, fusion energy is attracting capital across the full stack from plasma physics to fuel cycles. The commercial era is coming into focus.
The Trump Administration Green-Lights SMRs, and CFS Raises Nearly $1 Billion in New Cash
Commonwealth Fusion Systems secures $863 million in new funding, bringing its total to nearly $3 billion. Meanwhile, the U.S. Department of Energy selects 10 advanced nuclear startups to fast-track small modular reactor (SMR) deployment. Fusion and fission now share the spotlight as the world races to meet exponential electricity demand through next-gen energy sources.
General Fusion: Are They Back In The Game?
General Fusion just closed an oversubscribed $22M funding round. Their Magnetized Target Fusion approach is advancing steadily, with plans to reach scientific break-even by 2026. It’s a meaningful step forward, but commercial fusion is still a long road ahead.
Who Is Investing in Fusion Energy Development Today? You Might be Surprised…
Who’s betting on fusion? The answer may surprise you. From billionaires like Bill Gates to climate-minded funds like Footprint Coalition, fusion’s backers share a long-term vision for impact. We break down the players, funding rounds, and what 2025’s investment climate says about the future of fusion energy.
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