The Sparc/Arc project in the US https://www.youtube.com/results?search_query=mit+sparc+dennis+whyte https://www.youtube.com/results?search_query=mit+sparc+denn

The Sparc/Arc project in the US https://www.youtube.com/results?search_query=mit+sparc+dennis+whyte https://www.youtube.com/results?search_query=mit+sparc+denni... https://en.wikipedia.org/wiki/SPARC_(tokamak) https://en.wikipedia.org/wiki/SPARC_(tokamak) and the STEP project in the UK https://en.wikipedia.org/wiki/Spherical_Tokamak_for_Energy_Production https://en.wikipedia.org/wiki/Spherical_Tokamak_for_Energy_P... Both are very promising, and unlike all previous experiments, if their core design goals are met they would quickly lead to commercialization, quite plausibly within 20 years.