On June 22, 2026, General Fusion announced that its LM26 magnetized target fusion machine achieved compressional plasma heating, with the best results showing a 0.72 keV electron temperature and a modest ion temperature rise, but still far below fusion-relevant conditions.
The final 110-tonne module of the central solenoid, the world's largest pulsed superconducting electromagnet, was installed on June 23, marking a key milestone in the ITER project. The assembly of the magnet, which will weigh about 1,000 tonnes and reach a height of 18 meters, is now complete, with further work planned before it is transferred into the tokamak pit.
The Fusion Industry Association reported that fusion supply chain spending increased by 25% to USD 538 million in 2025, with ongoing concerns about access to specialist materials and fuel systems.
General Fusion has achieved plasma heating to approximately 8.4 million degrees Celsius (0.72 keV) using its LM26 Magnetized Target Fusion machine, marking progress toward its technical milestones. The results are submitted for peer review and demonstrate significant plasma compression and heating during the experiment.
General Fusion's LM26 machine demonstrated compressional heating of a deuterium plasma during experiments, resulting in more than a three-fold increase in electron temperature and a ten-fold increase in density across 11 compression shots.
Oxford Sigma joined the Steering Committee for the MatDB4Fusion platform, a global database for fusion materials data supported by CATF and OECD-NEA, to help guide its development and governance.
General Fusion's proposed business combination with Spring Valley Acquisition Corp. III was declared effective by the SEC on June 12, 2026, advancing the company's plans to become a publicly traded fusion energy company.
The U.S. Department of Energy released its finalized Fusion Science and Technology Roadmap on June 9, outlining a strategy to accelerate the deployment of commercial fusion energy in the United States, with the goal of delivering a fusion pilot power plant by the mid-2030s.
Over the last 36 hours, a vacuum vessel sector was inserted into the ITER tokamak assembly pit, with five of nine sectors now in place, marking progress in the construction of the plasma chamber. The installation involved a meticulous lifting process and was completed ahead of schedule.
General Fusion, a nuclear fusion company based in British Columbia and backed by Jeff Bezos and Tobias Lütke, is considering a dual listing on the TSX and Nasdaq stock exchanges.
Type One Energy, Tokamak Energy, and AECOM announced the formation of the UK Infinity Fusion Consortium to develop a private-sector-led fusion power plant project in the UK, aiming for commercial deployment using existing technologies.
The UK Infinity Fusion Consortium, comprising Type One Energy, Tokamak Energy, and AECOM, was announced to develop the UK's first private-sector fusion power plant, building on the US-based Infinity Two project with a target for commercial operation in 2034.
The US Department of Energy is seeking nominations for the Associate Director of the Fusion Energy Sciences Program, and CFS is in the process of permitting its first commercial fusion plant, the Fall Line Fusion Power Station, in the US. Europe’s fourth Vacuum Vessel sector for ITER has been completed and shipped.
The first phase of feeder assembly at ITER, involving the connection of superconducting busbar joints in the Tokamak Building galleries, has been completed, with 50 joints successfully installed. The next phase will occur inside the tokamak pit, where tighter spatial and schedule constraints apply.
Oxford Sigma published a peer-reviewed paper titled "Qualification Pathways for Fusion Structural Materials" in the Journal of Nuclear Engineering, discussing frameworks for demonstrating material performance in fusion environments and the importance of qualification evidence for fusion system deployment.
Pacific Fusion opened its fusion facility to external users through its Pacific Fusion Users Program, allowing access to its Demonstration System for research and development. The company also published a framework for evaluating progress toward commercial fusion.
Helion's Polaris device achieved measurable D-T fusion, reaching plasma temperatures of 150 million degrees Celsius and producing neutron signals ten times higher than D-D fusion, confirming successful D-T fusion operation.
Type One Energy and the Tennessee Valley Authority submitted an initial license application for Tennessee's first commercial fusion project at the Bull Run site, with the first phase scheduled for commissioning in 2029.
Tokamak Energy received the Institute of Physics Business Innovation Award in 2025 for its development of high-temperature superconducting technology, which is important for commercial fusion energy and other applications.
TVA and Type One Energy announced a Letter of Intent for the potential deployment of a 350-megawatt fusion power plant at TVA's former Bull Run Fossil site in Tennessee, using Type One Energy's stellarator fusion technology. The project aims to support reliable, on-demand, carbon-free power.
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General Fusion 
ITER Organization 
Fusion Industry Association 
Princeton Plasma Physics Laboratory 
United Kingdom Atomic Energy Authority 
Oxford Sigma 
Spring Valley Acquisition Corp. III 
Ontario Power Generation 
Savannah River National Laboratory 
United States Department of Energy 
Tokamak Energy 
Type One Energy 
Commonwealth Fusion Systems 
EUROfusion 
Institute of Plasma Physics of the Czech Academy of Sciences 
Pacific Fusion 
Helion Energy