Given that 25 per cent of Germany's electricity is now coming from renewable sources, the country's energy transition (Energiewende) has entered its adolescence. Like most teenagers it sometimes behaves very impolitely towards its neighbours, it annoys its grandparents and prompts its parents to discuss how to raise this child to become an agreeable member of society. On the other hand, teenagers are easily misunderstood, and, in fact, if one is prepared to listen, one can learn a lot.