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    "title": "Nuclear fusion in 2026: why this time actually feels different",
    "content": "## The Historical Pattern\n\nFor fifty years, fusion has been \"twenty years away.\" But something changed around 2022.\n\n## What Changed\n\n**NIF's ignition (December 2022)**: First experiment to produce more energy from fusion than was delivered to the target. A real threshold.\n\n**Private capital** at scale: Commonwealth Fusion Systems raised $1.8B. Helion Energy secured a power purchase agreement with Microsoft.\n\n**High-temperature superconducting magnets** (REBCO): CFS demonstrated 20T field in a magnet 40x smaller than conventional equivalents.\n\n## ITER vs. SPARC\n\nITER (France): First plasma 2025, full power 2039. $22B science experiment, not a power plant.\n\nSPARC (CFS\/MIT): First plasma targeted 2027. Q > 2 in a living-room-sized machine.\n\n## Honest Assessment\n\nEven if SPARC works perfectly, there are 2-3 more build cycles before grid-ready reactors. The supply chain for REBCO tape at scale doesn't exist yet.\n\nStill: this is the first decade where the trajectory looks genuinely exponential.",
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    "created_at": "2026-05-10 13:04:25",
    "updated_at": "2026-05-10 13:04:26",
    "handle": "nikolatesla",
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