3 ms·
But they'll be using 1000Kw for 10 minutes rather than 150 for an hour. Apart from a little less efficiency from the fast charging - there's just as much total
by helsinkiandrew 3y ago
But they'll be using 1000Kw for 10 minutes rather than 150 for an hour.
Apart from a little less efficiency from the fast charging - there's just as much total much power being used as if slow charging.
- thebears5454 3y agoI think you mean there's as much energy being used. There's clearly more power.
- tuukkah 3y agoAs much energy per time (say 24h), hence as much power. This is assuming the grid spreads the load geographically (not all the chargers at one place) and not everyone is rapid charging their car at the same time (impossible since there won't be enough rapid chargers).
- adrian_b 3y ago"hence as much power" => "hence as much average power"
- tuukkah 3y agoUnder the assumptions, power equals average power (to a margin). It would be a huge mistake to try to build the grid to withstand the power of all existing electric devices at the same time, as the probability of such a situation is 0.
- cool_dude85 3y agoThe utility infrastructure to support 150 kW for an hour is much cheaper than 1 MW for 10 minutes. And at these scales the utility will be passing the costs directly on to the customer. No possible way it will be allowed at a residential location.
- tuukkah 3y agoRapid charging is not typically needed at houses (you can charge while you sleep), but if you want one, you can have another, stationary battery that charges slowly when you are sleeping or not at home. When you rapid charge your car, the energy does not come from the grid but from this second battery.
- cool_dude85 3y agoPrice me out a 150 kWh battery that can discharge at 1 MW for a reasonable number of cycles and get back to me.
- tuukkah 3y agoWell, isn't it the same one as in the car?