Combined private and public fusion investment reached by September 2025 — a historic milestone
Fusion startups worldwide, with five planning to switch on test reactors before 2030 — Fusion Industry Association
Multiple teams have now achieved net energy gain — NIF led the breakthrough, validated multiple times since 2022
The IEA's State of Energy Innovation 2026 report features fusion alongside renewables and fission as a near-term energy contender. Commonwealth Fusion Systems has raised nearly $3 billion and expects to switch on its SPARC demonstration device in 2026, with Google having signed an agreement to purchase 200 MW from a commercial plant targeted for the early 2030s. High-temperature superconducting magnets are the materials breakthrough enabling compact reactor designs — and AI-driven material discovery is dramatically compressing the timeline from scientific insight to commercial application.
→"Commercial fusion by 2030" often compresses three very different milestones: physics demo, engineering pilot, and replicable commercial product. Which is actually in reach?
→The tritium supply chain crisis: fusion needs tritium to burn, but current global supply is severely limited. How does this affect commercial timelines?
→If fusion makes energy near-free, what happens to compute economics, desalination, and industrial decarbonization? The "energy singularity" thesis.