But I have a feeling that the more wind we build, the more "problems" will happen at our nukes and in the power lines, so the need for German/Danish gas/coal plants will never go away. If that happened, power prices would fall which would erode the profits of the power companies, not to mention the power tax revenues of the state. And we can't have that, can we?

Peak oil is not an energy crisis. It is a liquid fuel crisis.