Last updated Nov 29, 2025
techscience
By roughly 200 years from 2022 (around the year 2222), if fusion development continues, plasma fusion reactors will be miniaturized enough that many or most individual electrical devices could contain their own small fusion power source instead of relying on batteries or centralized grids.
So I do think that in 200 years, if plasma fusion systems work, there's nothing about the laws of physics that says they're limited in scale to only being large. They theoretically could be reduced down to there's no limit to the size they could drop down to. And so there could be a world 200 years from now where plasma fusion reactors exist in every component that needs electricity.View on YouTube
Explanation

The prediction is explicitly about technological developments around 200 years after 2022 (i.e., roughly the year 2222). As of today (November 30, 2025), we are only a few years past the prediction date, so there is no way to determine whether the long‑term scenario—miniaturized plasma fusion reactors embedded in individual devices—will occur. It is far too early to evaluate, so the accuracy of this prediction cannot yet be assessed.