This is the core technology that they planned to create. They now have to mass produce it at ten times lower cost and assemble it into a net energy gain system by 2025. They have $1.8 billion in recent funding from Bill Gates, Jack Ma, Richard Branson and many other funds and investors. They previously had gotten over $200 million so they now have total funding over $2 billion. The 20-Tesla magnets will make the Commonwealth Fusion reactor 40 times smaller than the ITER tokamak reactor which will use 11-tesla magnets.

The 20 Tesla magnets will be used in SPARC. The SPARC demo unit began construction in 2021 and they hop eto demonstrate net energy gain for the first time in history by 2025.

Daniel Jassby, a retired physicist from the Princeton Plasma Physics Laboratory (PPPL), says PPPL's Tokamak Fusion Test Reactor and the UK's Joint European Torus, the only two fusion reactors in the world to have used tritium, took 10 years of experimenting with hydrogen and deuterium alone. If the warm-up period could be halved, SPARC's tritium operation wouldn't be likely to occur before 2032. The SPARC net gain demo reactor with construction completion targeted for 2025 will target 10 seconds bursts of power. Jassby is saying it will take years to get the system up to full operation and power levels. It would not be practical or reasonable to start work on the ten times larger commercial reactor before they learn if things are really working with the demo reactor.