Lee, actually my statement was:
France is somewhat unique. All the trains are electric and 70% of the
electricity is derived from nuclear power plants.
Add to that 25% renewable and France does a good job at limiting carbon.
And as you said, Bahn trains in Germany apparently do run on renewable energy. But even that is a shell game as renewable, or coal produced, it all ends up in the same bucket (unless Germany runs a seperate distribution network for their trains - maybe? What do i know?). If its like the US, you pay extra for the electricity for the privilege of saying you bought the renewable juice running in the wires as the coal produced juice.
Germany does claim 46% renewable, but there is also some French nuclear power running through the German lines. Its all interesting if you are an environmentally conscious travel consumer.
Oh, I wouldnt fly a 3 hour train ride either. 5 hour, yes, plane every time. I have a 16+ hour train ride planned in June and sure not looking forward to it; but no options.