What's up with the super high carbon intensity estimate of your trains? Is it because they're running at night and can't use solar? Does it include embedded carbon in the train? Or is Germany's grid just that dirty?
15g/km is very low. The number is dominated by energy mix and infrastructure. Deutsche Bahn publishes lower number, but they only look at operation (not infrastructure), and assume „green energy“ rather than the energy mix of the country.
I'm not sure I'd consider 15g/km particularly low, for a rail system at least, but thanks for the source. Definitely interesting to see the disparity between night and day energy mixes in those numbers.
Here in Australia, we're lucky enough to have incredibly cheap solar during the day. But iirc, our energy is even dirtier (in most non-SA/Tasmanian states) during the night due to the use of brown coal.
