A commercial nuclear fusion plant supplies electricity to a public power grid before 2036.

Question

Six frontier AI models put this at 12% by 14 Sept 2036. Full reasoning from every model.

WillHappen.ai · Accepted Answer

12% — the median of 6 frontier models, resolving by 2036-09-14.

Answer

Gemini (Google): 12% — Grid-scale fusion by 2036 requires solving major engineering hurdles, securing NRC licensing, and building plants in under a decade. Pilot plants like CFS SPARC or Helion Polaris must first demonstrate high Qnet, with grid-tied successors needing 6+ years to build. Nuclear infrastructure faces multi-year NRC or equivalent regulatory approvals and supply-chain limits in tritium and HTS wire. A working net-electricity demonstration delivering metered power to the grid by 2030 would push the probability past 40%.

Answer

Claude (Anthropic): 4% — No fusion plant has achieved sustained net electric output, let alone grid-connected commercial sales within a decade. Commercial fusion requires solving sustained ignition, tritium breeding, materials durability, and cost-competitive engineering, none demonstrated at scale yet. Leading startups like Commonwealth Fusion and Helion target demo plants in early 2030s, but demos to commercial grid sales historically slip 10-20 years. A surprise breakthrough with rapid ITER or private success and fast regulatory approval could shift this, but no current project timeline supports pre-2036 commercial…

Answer

GPT (OpenAI): 23% — The bottleneck is turning a net-energy experiment into a licensed, maintainable power plant with bankable grid delivery. A developer must demonstrate sustained net-electric output, secure financing and permits, then build and commission by September 2036. No fusion project has yet produced grid electricity; first-of-a-kind nuclear plants commonly overrun optimistic schedules by years. Odds rise sharply if CFS, Helion, or a state program proves repeatable net-electric operation before 2030.

Answer

Grok (xAI): 18% — A private firm must convert a net-gain demo into a licensed, grid-tied plant inside one decade. Helion, CFS or a peer must show continuous net electricity then complete construction plus NRC-style licensing by 2035. Fusion programs historically slip 5–15 years and no FOAK fusion plant exists, placing this well below typical first-of-kind energy timelines. SPARC Q>1 in 2027 or a Helion 50 MWe unit online by 2028 would raise the odds sharply.

Answer

DeepSeek (DeepSeek): 12% — No fusion device has yet produced net energy, and the first commercial plant must clear physics, licensing, and financing inside nine years. NIF's December 2022 ignition produced 3.15 MJ from 2.05 MJ of laser energy, but that gain ignores ~300 MJ drawn from the grid to fire the lasers. Commonwealth Fusion Systems targets SPARC net energy around 2027 and ARC commercial power 'in the early 2030s', but ARC has no NRC construction license and no site… The NRC has no operating license pathway for a fusion power plant; its 2023 rulemaking treats fusion under byproduct materials rules, leaving grid-interconnection and…

Answer

Qwen (Alibaba): 3% — No fusion startup or national lab has cleared Q>10 in a sustained reactor; commercial grid sale by 2036 requires miracles stacked on miracles. The most advanced private efforts (Commonwealth Fusion Systems, Helion) target first plasma or demo power around 2027-2028, not grid sale; even their own timelines put… Historically, the gap between first net-energy demo and first commercial plant has been decades (fission: 1942 demo → 1957 Shippingport grid connection = 15 years)… A development that would raise this above 10%: a sustained Q>10 burn with clear path to electricity conversion demonstrated before 2028, which no current program has…

A commercial nuclear fusion plant supplies electricity to a public power grid before 2036.

Saudi Arabia reopens its shut export pipeline.

The UK government announces its decision on the North Sea gasfield after the Holborn and St Pancras byelection.

The Michigan coal plant remains closed following the federal court ruling invalidating the federal order to keep it open.

The US EPA finalizes the repeal of carbon standards for gas and coal power plants.