Reply To: Riversimple – Very efficient small hydrogen cars for subscription only

Aptera Community Solar EV Industry News Riversimple – Very efficient small hydrogen cars for subscription only Reply To: Riversimple – Very efficient small hydrogen cars for subscription only

Aptera Community Solar EV Industry News Riversimple – Very efficient small hydrogen cars for subscription only Reply To: Riversimple – Very efficient small hydrogen cars for subscription only

  • Joshua Rosen

    Member
    October 5, 2021 at 11:04 am

    It’s a scam to raise money. Hydrogen cars make absolutely no sense, the cost to fuel them is twice the cost to fuel a gas car using filthy reformed methane and much more than that if you use clean hydrogen because the process of electrolysis is inefficient. From windmill to wheels a hydrogen car uses a couple of times as much electricity as a battery car because you have big losses converting the electricity into hydrogen and then converting it back to electricity. You also have to take the transport and distribution costs into account. The volumetric efficiency of compressed hydrogen is awful, hydrogen may not weigh much but it takes a lot of space, so each truck can transport much less energy than a gasoline truck. The cost of hydrogen refueling stations is also much much higher than DC fast charging stations, the figure that I’ve seen in InsideEVs is something like $4M per station. Not only are the H2 stations expensive you need 10 times as many of them as DC charge stations because there is no such thing as home hydrogen fueling.

    To see how little sense a hydrogen car makes compare the Toyota Mirai side by side with a Tesla Model 3,

    Curb weight

    Mirai 4255-4335lbs

    Model 3 SR+ 3552lbs

    Model 3 AWD 4072lbs

    Luggage space

    Mirai 9.6 cu ft

    Model 3 15 cu ft

    0-60

    Mirai 9.2 seconds

    Model 3 SR+ 5.3 second

    Model 3 AWD 4.4 sec

    Model 3 Performance 3.1 sec

    Price

    Mirai $49,400-$66,000

    M3 SR+ $39,990

    M3 AWD $49,990

    M3 Performance $56,990

    The Mirai also has a much smaller backseat than the Model 3

    The hydrogen tanks are the reason that H2 cars have so little space, they are large and the form factor is constrained by the fact that they operate at 10,000 PSI. You can stuff batteries anywhere, usually it’s a skate board under the floor, that’s why BEVs can be so space efficient. Fuel cells also produce electricity at a lower rate than batteries, that’s why the Mirai is so dog slow.