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seifrob · 10-01-2017, 07:06 PM

Hi,

I just had a sudden thought (inspired by this Spiegel article - sorry, in German, see translated version here)

So here is my question:

My country has currently about 6 millions cars. Imagine that half of them are EVs, so we have 3 millions EV cars. Lets say nominal distance on full charge is 400 km, with speed 50 km/h (reasonable for central Europe) it takes 8 hours to cover the distance. Than it takes another eight hours to charge their 22 kWh packs (assume 230 Volts, 12 amps, roughly 3 kW, which is what most of my country infrastructure can handle). So 1.5 million of cars will be tied to grid at any moment, drawing 4.5 GigaWatts of electricity. Our biggest nuke power plant has around 2 GigaWatts output, whole country produces around 16 GigaWatts. Wieving it from this angle, "bright EV future" looks kinda scary.

Where are my assumptions wrong?

10-01-2017, 07:06 PM	#1 (permalink)
seifrob Permanent Lurker Join Date: May 2011 Location: Czechoslovakia (sort of), Europe Posts: 348 Dáčenka - '10 Dacia / Renault Logan MCV 1.5 dCi (X90 k9k) 90 day: 47.08 mpg (US) Thanks: 129 Thanked 198 Times in 92 Posts	a bit of EV scepticism?? Hi, I just had a sudden thought (inspired by this Spiegel article - sorry, in German, see translated version here) So here is my question: My country has currently about 6 millions cars. Imagine that half of them are EVs, so we have 3 millions EV cars. Lets say nominal distance on full charge is 400 km, with speed 50 km/h (reasonable for central Europe) it takes 8 hours to cover the distance. Than it takes another eight hours to charge their 22 kWh packs (assume 230 Volts, 12 amps, roughly 3 kW, which is what most of my country infrastructure can handle). So 1.5 million of cars will be tied to grid at any moment, drawing 4.5 GigaWatts of electricity. Our biggest nuke power plant has around 2 GigaWatts output, whole country produces around 16 GigaWatts. Wieving it from this angle, "bright EV future" looks kinda scary. Where are my assumptions wrong?