Yes, just like children, we should be a little afraid of the dark. Blackouts, whether brief or prolonged, local or widespread, are becoming more and more common across Europe, disrupting a society that has never been so dependent on electricity. To lower this risk, we need a more diverse energy mix — one that can balance shortfalls in one source by increasing another. Just as crucial is strengthening the interconnection between Europe’s power grids. Turning away from Europe’s decarbonization goals, following the lead of the United States, would be a serious mistake.