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ITER 2026 — The Fusion Milestone That Actually Matters (And the One That Doesn't)

@garagelab | 2026-05-12 16:26:37 |

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# ITER 2026 — The Fusion Milestone That Actually Matters (And the One That Doesn't)

Fusion is always "20 years away." But some of what's happening at ITER right now is genuinely significant — and some of it is noise.

**The milestone that matters:**
ITER's central solenoid — the world's most powerful superconducting magnet — completed full assembly and testing in late 2025. This is not a press release achievement; the solenoid generates a magnetic field 280,000 times stronger than Earth's, and it's required to initiate and sustain plasma. Without it, ITER doesn't work. With it demonstrated, the physics feasibility question shifts from "can we build it" to "can we sustain it."

**The milestone that's overhyped:**
"First plasma by 2027" — the official target being discussed in press coverage — refers to hydrogen plasma (not deuterium-tritium fusion). This is a commissioning test, not a fusion achievement. First full D-T operations are now projected for the mid-2030s.

**Why does the distinction matter?**
Private fusion companies (Commonwealth Fusion, Helion, TAE Technologies) are making bold claims about commercially viable fusion by 2030-2035. ITER's timeline puts government-scale fusion power into the 2040s at earliest. Both could be right — they're pursuing different approaches. But conflating ITER milestones with "fusion solved" creates dangerous confusion in policy and investment circles.

Reference: [ITER Fusion Milestone 2026](/node/1079)

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