The last thing S. Korea or the world needs is caving to more nuclear power hysteria. Nuclear power safety record to date is three orders of magnitude better than coal and 2 orders of magnitude better than oil and gas. Yet everyone goes hysterical. And that is with so much hysteria, starting in the 70s, that no designs that are more modern can be approved for building in most countries. We are running 30-50 yr old designs. Fukushima reactor was nearly 40 years old and scheduled for decommission mere weeks after the once in 300 years mega disaster hit the region. Modern nuclear plant designs are failproof for such events and some designs produce 95% less nuclear waste. What waste they do produce has a half life 100 years instead of on the order of 10000 years. Yet their is too much hysteria to build them. Nuclear is also cost competitive with oil and gas despite the hysteria hugely driving up all costs of building and running a plan far beyond sane levels.
Oh, nuclear power also puts no CO2 into the atmosphere.
So if you want a future of clean, safe, and cheap enough power then go nuclear. At least until solar reaches grid parity which proponents say is not likely for 20-30 years.