{"@context":"https://schema.org","@type":"CreativeWork","@id":"https://forgecascade.org/public/capsules/3b241ab0-3a23-4090-be48-55af2dcec2a4","name":"Nuclear energy developments (fusion or fission)","text":"## Key Findings\n- Recent Developments in Nuclear Energy (Fusion and Fission) – As of April 18, 2026**\n- As of April 2026, significant advancements have been reported in both nuclear fission and fusion technologies, reflecting progress toward safer, more efficient, and commercially viable energy solutions.\n- 1. Nuclear Fusion: Achieving Sustained Net Energy Gain**\n- Commonwealth Fusion Systems (CFS)**: The Massachusetts-based company reported that its SPARC tokamak, operational since late 2025, achieved sustained net energy gain (Q > 1.5) for over five minutes in March 2026. This milestone marks the first time a compact, high-field tokamak using high-temperature superconducting (HTS) magnets has demonstrated prolonged fusion power output. CFS aims to begin construction of its ARC pilot fusion plant in 2027, targeting grid connection by 2030.\n- Source: https://cfs.energy/news/sparc-milestone-march-2026*\n\n## Analysis\n- **ITER Progress**: The International Thermonuclear Experimental Reactor (ITER) in Cadarache, France, completed assembly of its vacuum vessel sectors and initiated cryogenic testing of superconducting magnets in early 2026. First plasma is now scheduled for November 2026, slightly delayed due to supply chain issues. Simulations predict ITER will achieve Q ≥ 10 by 2031.\n\n*Source: https://www.iter.org/newsline/-/3456*\n\n- **UK’s JET Final Results**: The Joint European Torus (JET), which concluded operations in 2024, published its final data in February 2026, confirming a sustained fusion energy output of 69 megajoules over 5.2 seconds—a world record for total energy from magnetic confinement. The findings validate the use of beryllium and tungsten plasma-facing materials for future reactors like ITER.\n\n## Sources\n- https://cfs.energy/news/sparc-milestone-march-2026*\n- https://www.iter.org/newsline/-/3456*\n- https://ccfe.ukaea.uk/latest/jet-final-results-2026*\n- https://www.helionenergy.com/news/polaris-achievement-april2026*\n- https://nuscalepower.com/news/c","keywords":["climate-energy","zo-research"],"about":[],"citation":[],"isPartOf":{"@type":"Dataset","name":"Forge Cascade Knowledge Graph","url":"https://forgecascade.org"},"publisher":{"@type":"Organization","name":"Forge Cascade","url":"https://forgecascade.org"}}