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§ Private Profile · Madison, WI, USA
Fusion energy technology for zero-carbon industrial heat and power.
Realta Fusion is a cutting-edge fusion energy company revolutionizing the way we decarbonize industrial process heat and electricity, developing economic, zero-carbon energy for global use.
Realta Fusion has raised $140.0M across 3 funding rounds.
Realta Fusion has raised $140.0M in total across 3 funding rounds.
Realta Fusion has raised $140.0M across 3 funding rounds. Most recently, it raised $95.0M Debt in February 2026.
| Date | Round | Lead Investors | Other Investors | Status |
|---|---|---|---|---|
| Feb 17, 2026 | $95M Debt Financing | Silicon Valley Bank | — | Announced |
| May 1, 2025 | $36M Series A | Future Ventures | Andreessen Horowitz, AngelList, Bascom Ventures, Breakthrough Energy Ventures, Buckley Ventures, ALI Tamaseb, Divergence Ventures, Founder Collective, Greylock, Helium 3 Ventures, Khosla Ventures, Liquid 2 Ventures, Quiet Capital, Rivet Ventures, Scale Asia Ventures, Solana Ventures, The Venture Reality Fund, TitletownTech, Unruly Capital, UpHonest Capital, Y Combinator, Ylem, Arash Ferdowsi, Aston Motes, Augusto Marietti, Dylan Field, Eden Chen, Howie LIU, Immad Akhund, Jack Smith, James Gwertzman, Matt Bellamy, Nate Mitchell, Paul McKellar, Sumon Sadhu, Fundo Avila, Gsbackers, Mayfield, Siteground, Warf Ventures | Announced |
| May 1, 2023 | $9M Seed | Khosla Ventures | Bascom Ventures, Future Ventures, TitletownTech, Warf Ventures | Announced |
Realta Fusion is a fusion energy startup developing compact, scalable, modular fusion systems called CoSMo™ for industrial heat and power, targeting decarbonization of hard-to-abate sectors like data centers, chemical plants, metal recycling, and remote mining.[1][3][4][7] Founded in 2022 as a University of Wisconsin-Madison spinoff, it uses advanced plasma confinement via magnetic mirror technology with high-temperature superconducting magnets and radio-frequency heating to produce zero-carbon energy at lower capital costs than traditional fusion approaches.[1][2][6] The company has raised $48M total, including an oversubscribed $36M Series A in May 2025 led by Future Ventures, achieving strong growth momentum with a demonstrated operating plasma and plans for commercial prototypes by 2028.[1][7]
Serving industrial customers needing 50-500 MW outputs, Realta solves the challenge of providing economic, on-site fusion energy to replace fossil fuels in emissions-intensive processes, addressing the 37 billion metric tons of annual CO2 from energy and industry.[3][4][6][7]
Realta Fusion emerged in 2022 from University of Wisconsin-Madison research, initially fueled by a $10M Department of Energy grant for fusion development.[3][5][6][7] CEO and co-founder Kieran Furlong, a Stanford MBA with experience in high-temperature catalysis and climate-tech investing (ICI, Johnson Matthey), led the spinoff alongside plasma physics experts: CSO Cary Forest, PhD; Jay Anderson, PhD (plasma heating); Ben Lindley, PhD (blanket design); Oliver Schmitz, PhD (plasma-facing components); and others like VP of R&D Derek Sutherland, PhD.[3][6][7]
The idea built on reviving the mature magnetic mirror concept with modern advances in superconducting materials, computing, and plasma physics for a simpler, lower-capex path to fusion.[6] Pivotal early traction came in July 2024 with the WHAM reactor achieving the highest-ever 17 Tesla magnetic field on stabilized plasma at high heat—demonstrating actual operating plasma, a rarity among fusion startups.[1][7] This milestone propelled their $36M Series A just months later.[1][7]
Realta stands out in the crowded fusion field through its pragmatic engineering focus:
Realta rides the fusion energy renaissance, fueled by climate urgency, AI/data center power demands, and breakthroughs in magnets/computing that make compact fusion feasible.[1][4][6] Timing is ideal: industrial decarbonization lags (37B tons CO2/year), and hyperscalers/mining seek zero-carbon baseload amid grid constraints—Realta's modular systems fit perfectly for "hard-to-abate" sites.[4][6][7]
Market tailwinds include falling superconductor costs, DOE grants, and VC surge (e.g., Future Ventures' Tesla/SpaceX backing).[1][6] Realta influences the ecosystem by validating magnetic mirrors as a credible alternative to tokamaks, accelerating private fusion toward 2030s commercialization and pressuring incumbents like General Fusion.[1]
Realta's near-term path centers on WHAM++ and Anvil prototypes for net energy (Q≥1) by 2028 at Realta Forge, targeting first commercial heat sales via energy/industrial partners.[6][7] Success hinges on plasma stability scaling, but their plasma demo and $48M war chest position them as leaders in modular fusion.[1][7]
Shaping trends: Surging industrial/AI power needs, policy incentives (e.g., IRA tax credits), and magnet tech advances favor Realta's cost edge. Influence could expand to grid power if Anvil hits milestones, humanizing fusion from sci-fi to factory reality—unlocking limitless zero-carbon energy as promised.[3][4]
Realta Fusion has raised $140.0M in total across 3 funding rounds.
Realta Fusion's investors include Silicon Valley Bank, Future Ventures, Andreessen Horowitz, AngelList, Bascom Ventures, Breakthrough Energy Ventures, Buckley Ventures, Ali Tamaseb, Divergence Ventures, Founder Collective, Greylock, Helium-3 Ventures.