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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 car

• solardev 1y ago
  Where do you see the carbon intensity? I just see a plane above a train with a single "250g" figure.
  • dcan 1y ago
    I see 15g CO2(eq)/km in the bottom left-hand corner
• ant6n 1y ago
  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. The 15g is a good estimate, see discussion here: https://back-on-track.eu/de/klimawirkung-von-nachtzuegen-neue-studie-ueberprueft-back-on-track-report-aus-2022/#:~:text=Die%2520Ramb%C3%B8ll%252DStudie%2520errechnet%2520demnach,den%2520IEA%252DWerten%2520von%25202019. https://back-on-track.eu/de/klimawirkung-von-nachtzuegen-neu...
  • bcye 1y ago
    To be fair, DB claims everywhere to be running there long-distance routes entirely on green energy
  • ViscountPenguin 1y ago
    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.