Coal and nuclear energy made up 40% of the overall energy mix in Germany. Meanwhile, renewables fell to 41% of the mix. Still, Germany is stuck on kicking its coal and nuclear habit—coal because it’s dirty, and nuclear because of Fukushima. The decision to retire the latter was made shortly after the Fukushima disaster, but since then, coal use has risen to fill in the gaps left by nuclear. This year, Germany plans to shut down the Grohnde, Gundremmingen C, and Brokdorf nuclear plants, which will leave Germany with just three. Those final three will be retired by the end...