The South Korean artificial sun, which goes by the name KSTAR (Korea Superconducting Tokamak Advanced Research), has made an important scientific discovery concerning nuclear fusion by being able to sustain plasma in high-confinement mode for a period of 102 seconds while simultaneously managing to keep plasma temperature at 100 million degrees centigrade for 48 seconds. This development by the Korea Institute of Fusion Energy (KFE) is another move towards achieving clean fusion energy, whose ability to generate unlimited amounts of electricity with little to no carbon emission is promising.
A single solar panel is basically useless. You need a huge field of them per small city, and by the time you do have your huge fields of wind and solar, you then need giant grid batteries, and you still often fall short, which means that to be safe you need to double or triple your solar and wind build out.
Which is why most solar and wind projects are backed up with methane burning generators.
Nuclear on the other hand, takes up a tiny fraction of the space and outputs orders of magnitude more power, safer and cleaner than any other form of energy.
South Korea doesn’t have a lot of land mass for solar, they do however have competent engineers and scientists.
Fun fact, most of the fearmongering around nuclear has been paid for by oil companies, starting with Hermann J. Muller working for the Rockefeller Foundation, to Robert O. Anderson, CEO of ARCO giving $200K to a man to start an anti-nuclear environmentalist organization called Friends of the Earth. The Rockefeller Foundation directly funded Greenpeace up until just a few years ago.
As for Fusion, yeah, we can sustain a reaction by feeding energy in, and sometimes, we can observe more energy out than in, but we have absolutely zero ways to capture that energy.
Solar actually overtook nuclear as least-killy-per-gigawatt about a year (maybe even two, now) ago, although obviously killing people isn’t the only bad thing a system of power generation can do.
It’s not hard to overtake nuclear when we’re shutting nuclear down. Thankfully that trend is reversing, because if we had a full nuclear build out, we wouldn’t really need anything else.
Especially SMRs, those are quite amazing, well, amazing for something that just heats water to make steam to drive a turbine.
Water+heat = steam = power