I'm not sure I follow. Why would all cars be drawing 350kW at the same time? Do all cars fill up their gas tanks at the same time? If most cars do 30-40 miles per day, that'd be like 10-15 kWh top up overnight. A clothes dryer does about that much and no one is worried about doing laundry, are they?
A dryer draws under 5kW, and a car upto 350kW. Assuming an average 2kW/capita power generation it takes about 0.5% of them charging to double the power consumption. Worse, most people prefer travelling and charging at day time, when the power consumption is already high.
Yeah, I'm still not following. I mean, not to get into a deep dive about household laundry habits, but most people do a load of colors and a separate load of whites and it takes like an hour for each one to dry. There's your 10kWh and no one frets about doing laundry.
What are the practical implications of using a lower or higher voltage for the battery?
Day time charging would actually be OK. As I understand it, the biggest power draw typically happens late in the afternoon in the summer when houses have cooked all day, the a/c’s are on, people are home from work doing laundry, etc. As opposed to the power draw at say 1:00 p.m.
My understanding is that back in 2017 when the program was still in the compliance car mindset, they opted to use more affordable and common ≤400v stuff.
