" As far as the costs of chasing the CO2 bogeyman goes, I have no idea "
Weren't you the one arguing that investment in renewables was a waste of money and hadn't achieved anything ? Now you're saying " you have no idea " ?
Sounds like you've put your foot in your mouth there.
What does Germany importing power from France have to do with anything ?
The point is, Germany is getting 30% of it's power from renewables and that number is increasing. To put it another way, it's 30% less power that is coming from more polluting sources.
https://www.cleanenergywire.org/factsheets/germanys-energy-consumption-and-power-mix-charts