News for hackers. Stuff that matters.

A comment on Why electric cars will take over sooner than you think. Parent comment

Re:Why electric cars will take over sooner than you think by tda on Tuesday June 01, 2021 @08:29AM (#27353444)
I wouldn't be so sure about that, but I tried to look up some numbers and couldn't find any for the capacity planning of last mile delivery. 10 kWH per day is about the average electricity use per home in the Netherlands, so the aggregated impact will definitely be huge. Especially as more an more homes are switching to electric heating and cooking (until recently pretty much all homes here used natural gas). So household electricity consumption will take a huge leap in the coming decade(s), and I would think this will also affect last mile.

Also take into account standard home chargers here are 16A@230V=3.7kW, but 3 phase chargers that can do 3x16A, 10kW are gaining popularity. Only if the chargers remain 'dumb' and all start pulling max current when everyone gets home at dinner time that will be an issue here for sure

[ Parent | on HN ]
Re:Why electric cars will take over sooner than you think by Retric on Thursday June 03, 2021 @08:25AM (#27380219)
Daily electricity is highly correlated. Consider, people rarely microwave anything at 3AM. This also means houses get wired to allow multiple loads at the same time as you might only turn on the Microwave for 5 minutes a day so that’s adding 0.083kWh to your daily total, but you don’t turn off the lights just because you want to use 1.2kW heat up some leftovers.

Further, several people in a neighborhood might all microwave something during the same commercial break. Unlike most things the grid is built for peak instantaneous demand. As such distribution needs to account for huge local demand spikes. EV’s increased demand will result in some new distribution infrastructure, but it’s mostly regional not last mile.

[ Parent | on HN ]
Re:Why electric cars will take over sooner than you think by Fronzie on Tuesday June 01, 2021 @09:50AM (#27354438)
On the other hand, solar panels on the roof are also taking off. That's probably not enough for heating, but might be for everything else.
[ Parent | on HN ]