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Tuesday, October 27, 2026
Proxima Fusion — Technical Profile & Analysis
Deep-dive assessment of the Stellarator architecture, fuel path, and market positioning.
Technology Assessment & Commercial Milestones
Latest coverage — Proxima Fusion
- FundingSep 20, 2026Proxima Fusion
Proxima Fusion: €130 Million Series A Raised For Energy Platform
Proxima Fusion, a spin-out from the Max Planck Institute for Plasma Physics, has secured €130 million in a Series A financing round to advance its quasi-isodynamic stellarator development.
- IndustrySep 16, 2026Proxima Fusion
Proxima announces plan for German HTS production facility
Proxima Fusion and the State of Lower Saxony have signed an MoU to establish Europe's first large-scale production facility for fusion-grade high-temperature superconducting wire, aiming to secure the supply chain for advanced stellarators.
- IndustrySep 16, 2026Proxima Fusion
Proxima Fusion and Lower Saxony sign MoU to build Europe’s first large-scale fusion-grade HTS tape facility
Proxima Fusion and the German state of Lower Saxony have signed a Memorandum of Understanding to establish Europe's first large-scale manufacturing facility for fusion-grade high-temperature superconducting tapes.
- PolicySep 15, 2026ITER
South Korea's ITER cost quadruples to 3 trillion won
South Korea's Ministry of Science and ICT has approved a revised budget for its contribution to the ITER project, increasing its total commitment to approximately 3.09 trillion won ($2.24 billion).
- FundingAug 26, 2026General Fusion
BC energy company General Fusion aims to go public via a $1B SPAC deal
Vancouver-based General Fusion has announced a definitive agreement for a business combination with a special purpose acquisition company (SPAC), valuing the combined entity at approximately $1 billion.
- FundingAug 26, 2026Commonwealth Fusion Systems
Fusion Firm Gets Major Monetary Boost
Commonwealth Fusion Systems has secured approximately $4 billion in new capital, representing nearly a third of all private investment in the fusion sector to date.
- M&AAug 20, 2026General Fusion
Struggling fusion power company General Fusion to go public via $1B reverse merger
Magnetized Target Fusion developer General Fusion will go public through a reverse merger with Keyarch Acquisition Corp., valuing the combined company at approximately $1 billion.
- FundingAug 19, 2026Proxima Fusion
Proxima Fusion joins the club of well-funded nuclear contenders with €130M Series A
Proxima Fusion, a spinoff from the Max Planck Institute for Plasma Physics, has secured €130 million in a Series A funding round to advance its quasi-isodynamic stellarator designs for commercial fusion power.
Stellarator Renaissance
3D-shaped external coils generate the entire confining field. No plasma current, no disruptions, native steady-state operation.
Reactor design
Magnetic / Stellarator (W7-X lineage)
Core tech focus
3D HTS REBCO magnets
Key milestones
€185M Series A (2025). 2026 RWE/Bavaria siting agreement.
The class's clearest commercial trajectory. IPP spin-out with a signed RWE/Bavaria agreement to site 'Stellaris' on a former fission site — the only stellarator with a confirmed utility partner and physical pilot location.
Inherits the Wendelstein 7-X operational dataset. Eliminates internal plasma current entirely, immunising the reactor against the catastrophic disruption events that threaten every tokamak. Targets the same D-T triple-product envelope (~3×10²¹ keV·s·m⁻³) but with continuous, not pulsed, confinement.
- Non-planar coil geometry historically required sub-millimetre manufacturing precision — the dominant cost driver.
- Heat exhaust in non-axisymmetric 3D geometry produces localised thermal peaking that threatens divertor plasma-facing components.
- Same tritium breeding and neutron-damage constraints as the D-T tokamak class.
- Coil manufacturing precision determines unit cost — simplified-geometry approaches (Thea, Renaissance) target order-of-magnitude reductions.
- Higher capacity factor than tokamaks (no disruption downtime) materially improves LCOE.
- Liquid-metal blankets (Helical, Renaissance) double as first-wall, breeding blanket, and heat exchanger — collapsing three subsystems into one.
Core IP originates from national labs (IPP, UW-Madison, Princeton). Proxima exhibits the clearest commercial trajectory — utility partnership with RWE and a physical site secured. The fundamental engineering divergence is coil manufacturability: Type One accepts complex 3D coils via AI-optimised manufacturing; Thea uses arrays of simple planar HTS coils tuned dynamically; Renaissance laser-etches custom coil shapes directly into HTS sheets.
Sourced from the 2026 Global Fusion Energy Comparison — triple-product physics, DEC architecture, and LCOE framework.
Who built Proxima Fusion
Proxima Fusion is the first official spin-out from the world-renowned Max Planck Institute for Plasma Physics (IPP). This elite founding team of next-generation researchers worked directly on the Wendelstein 7-X, the most advanced stellarator on Earth. Blending the intense academic rigor of MIT's plasma program (Sciortino and Milanese) with the stellarator-engineering mastery of the Max Planck Institute (Lion and Schilling), and paired with precision manufacturing expert Martin Kubie, the founders are deploying advanced computational optimization and HTS magnets to transform the stellarator into an economically viable, continuously operating baseload power plant.
Francesco Sciortino
PhD in Plasma Physics, MIT; MSc, EPFL
Lucio Milanese
PhD in Plasma Physics, MIT; BSc, University of Padua
Jorrit Lion
PhD in Physics, Max Planck Institute for Plasma Physics
Jonathan Schilling
PhD in Engineering/Computer Science, Max Planck Institute
Martin Kubie
MSc in Mechanical Engineering, Technical University of Munich
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