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I happen to have 22kW at home (3x32A) but my TM3LR is only capable of 11kW (3x16A) but this means that no matter what my car can always be charged during the ti
by jnsaff2 4y ago
I happen to have 22kW at home (3x32A) but my TM3LR is only capable of 11kW (3x16A) but this means that no matter what my car can always be charged during the time I sleep. Most of the time in practice however I only charge during the hours electricity is really cheap as it's not too often I come in with a completely empty battery and need to drive full battery capacity next day (two days of ~500km each in a row).
I find fast charging is only needed for road trips and quite possibly for fleet operations (taxis, delivery vans etc). For a private car 11kW is plenty and less could be doable as well.
As for grid .. our grid here in Estonia has the opposite problems, most people want to start selling to the grid with solar panels. And grid people being really inflexible (in a charitable interpretation) or greedy (by wanting to people pay for all the work needed to modernize the aging grid) also want to charge ridiculous fees for any increases in capacity.
With lots of EV's I kinda understand that the grid may have more problems but with local generation the load on the grid goes down (as electricity needs to be transported much shorter distances, think: your neighbors). So my trust that 3x32A installation cost of $20k is justified is very low (unless this is a rural farm or something that really is far from nearest transformer).
Just last week someone was quoted 4 million euros to upgrade an existing connection to support a 15kW PV installation (rural, but most of the cost came apparently from needing to upgrade a 330kV transformer station).