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> Road transport represents ~26% of global energy use Does that 26% include the energy that's involved to ship the fuel in tankers? Something like 50% of mari

• SECProto 9mo ago
  > Something like 50% of marine fuel usage is shipping fossil fuels around the world Note that marine shipping is extraordinarily fuel efficient (from a gCO2/(t*km) basis), so I doubt that it adds a lot on a per ton of fuel basis. We just ship a lot of fossil fuels. This [1] graph looks to be in the right ballpark from what i remember in school 15 years ago, i didn't verify it in depth but +- an order of magnitude better than the next best method is roughly right https://image2.slideserve.com/4166134/gco-2-t-km-of-freight-transport-modes-l.jpg https://image2.slideserve.com/4166134/gco-2-t-km-of-freight-...
  • lambdaone 9mo ago
    Even though petroleum product shipping accounts for almost 40% of shipping, the surprising efficiency of ocean transport still means that it's not that big an energy cost; a single-digit percentage of the energy content of the shipped oil/gasoline. But even that is still worth saving - it's a few percent more benefit for electrification.
• jijijijij 9mo ago
  Marine transport is stupidly efficient and probably won’t influence those numbers much. For the same reasons it’s absolutely okay to eat avocados from overseas. I believe the processing of oil to gas is quite energy intense tho.
• adrianN 9mo ago
  You also need to extract and refine the oil before you can put it into a car.