Nuclear energy, to start with, is ultimately not safe, and the Germans have always been particularly uneasy with it. After the nuclear accident at the Fukushima nuclear plant in Japan in 2011, Chancellor Angela Merkel ordered the “Atomausstieg,” the exit from nuclear energy once and for all. Why? Because, as Ms. Merkel put it back then: “The residual risk of nuclear energy can be accepted only if one is convinced that — as far as it is humanly possible to judge — it won’t come to pass.” After Fukushima, Ms. Merkel, a trained physicist, was no longer able to believe that a nuclear disaster would not occur. That there was a catastrophe even in a high-tech country like Japan made her change her mind.

But what about the near-certain catastrophic consequences of the second evil, climate change enhanced by coal-fired plants? Ms. Merkel recognized recently that “climate change is happening faster than we had thought a couple of years ago.” At the same time, she had to admit that Germany was struggling to fulfill the promises of the Paris climate accord: Despite new hopeful figures, the targeted 40 percent reduction of carbon emissions by the end of 2020 may not be met. One could argue that knowledge about the severity of climate change has deepened since 2011 and that countries should do everything they can to shift away from fossil fuels — yet there’s no sign that Ms. Merkel might change her mind about scrapping nuclear. //

The tragedy about Germany’s energy experiment is that the country’s almost religious antinuclear attitude doesn’t leave room for advances in technology. Scientists in America, Russia and China believe that it is possible to run nuclear power plants on radioactive waste — which might solve the problem of how to store used fuel elements, one of the core arguments against nuclear. Certainly, these so-called fast breeder reactors have their dangers too. But as we transition to a completely renewable energy supply, wouldn’t they be a better alternative to coal and gas plants? //

By shutting down its entire nuclear sector in a rush, Germany loses more opportunities than dangers. It forfeits the capacity to connect to a technology that might prove the safest and most climate-friendly mankind has yet seen. At the very least, using Germany’s existing nuclear plants would make an expeditious move away from fossil fuels possible.

Is it irrational not to do so? Maybe, maybe not. But letting this chance slip away could turn out to be one of the gravest mistakes of the Merkel era.