Hydrogen versus EV

  1. 6,620 Posts.
    According to this a hydrogen fueled vehicle is only 25% - 33% as efficient as an EV.
    The last thing we need is to choose a system that throws away up to 3/4 of the source energy.

    "Any effective hydrogen economy would require an infrastructure that could use zero-carbon power to electrolyze water into hydrogen, convey this highly diffuse gas long distances, and pump it at high pressure into the car -– all for the purpose of converting the hydrogen back to electricity in a fuel cell to drive electric motor.
    The entire process of electrolysis, transportation, pumping and fuel-cell conversion would leave only about 20 to 25 percent of the original zero-carbon electricity to drive the motor. In a plug-in hybrid, the process of electricity transmission, charging an onboard battery and discharging the battery would leave 75 to 80 percent of the original electricity to drive the motor. Thus, a plug-in should be able to travel three to four times farther on a kilowatt-hour of renewable electricity than a hydrogen fuel-cell vehicle could."


    http://thinkprogress.org/climate/2014/08/05/3467115/tesla-toyota-hydrogen-cars-batteries/
 
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