Merkel and Schroeder gambled on Russian gas imports as a holdover to transition from the aging nuclear plants and coal plants towards renewables. They did so because according to Merkel “it made sense at the time” and she did not really see the larger geopolitical picture. When Russian gas suddenly dried up due to the Russian invasion of Ukraine, they had to delay the closure of several coal plants to keep the power on.
So they’re trying to replace nuclear and coal with gas.