Though Germany has invested heavily in renewables, it nevertheless has had to burn massive amounts of coal since 2011 to keep its economy running. Absent nuclear, Germany also depends more on Russian natural gas, a deep geopolitical vulnerability that gives leverage to Russia’s authoritarian government.

True, the German government has committed to phasing out coal — but not until 2038. Even on this long time frame, eliminating coal without help from nuclear power plants will be perilous for Europe’s largest economy. Analysts warn that Germany’s supply margin — how much electrical generation capacity the country has in reserve — could plummet in the next couple of years, risking blackouts in times of grid stress.