M564038 wrote:So yes,
You are going at it the wrong way and using the wrong numbers.
I drive a bit more than average, but my car also use a bit less than an average EV per km, and the meter show it has consumed 2503.55kWh over the last year. (Including transmission loss)
In addition, to find the actual draw on the grid, you need to subtract the savings in gasoline refinement which, according to those in the know is about about 1kWh/10km.
Combining these numbers with average driving distances, you’ll find that an average draw over 24hours for a EV is 125Wh.
To point you to where your numbers is off:
A car has 2 kW ratings:
1/The engine size: Maximum theoretical power output, just as an fossil car, where it was traditionally measured in Horse Power. You never actually reach even a fraction of this number. This is not an interesting number in measuring consumption.
2/The battery size, measured in kWh.
The most popular size for newer mid range EVs (Polestar, Tesla 3, Ioniq 5 etc) seems to be around 70kWh. This will get you around 400Km in real life. Upwards of 500Km in an M3 on a summers day.
Completely in line with what I measure myself of my owns car’s consumption, and what I see from the numbers I have access to from our housing area’s garage charging stations where we have closer to 200EVs with individual stations to measure.Aquila3 wrote:M564038 wrote:Sorry, but you are making things up.
Electrification of road transport barely makes a dent in electricity consumption. We are already well under way over here, and it doesn't register on the total grid usage. Full electrification would be around 1-2%
The average draw for a car, would be in the range of changing 2 incadescent bulbs to LEDs in your home.
And even if it did take a small nuclear plant in each city, so be it. Bring it on!
Sorry but I would love to see your numbers. I really hope you show me wrong like you easyly did by words. Really.
Here are mine, in a simplified example. I do not pretend to be accurate, just an example.
A normal small car would have a 50KW engine. Commuting to work 1 hour a day, shopping, etc and using it at average 50% of power I will burn 25Kwh a day. Like 2 Kg of the good old gas, not bad. I will have to charge it practically every day, though.
In my household I consume about 10Kwh a day for light, apparates, etc. I have no AC, like many (were) in Central EU and I heat with gas, ooops.
Nevertheless my car would consume 2.5 times the electric energy of my household.
Or using your numbers + 250%
And like everybody I will connecting it to the grid when I arrive home, around 6 pm. No significant sun at that time, year around. Wind, maybe.
The peak power will probably be even worse, so , since the infrastructure must be dimensioned for peak it will need probably to be quadrupled. It means that the copper wires of my mains line that are now 2.5 sq mm will go to 10 sq mm, and at the same rate all the way along until where there is some significant energy accumulation (that today there is almost none) . I hope it will be always a windy night, (like almost never in places like Milan metropolitan area, 4 M people and cars). Otherwise I will have to draw that energy from some far away place, most probaly a French nuclear plant, losing some 30% of it along the way.
Where we are? +330% electric?
So we will have to dig all our roads and install all that copper (that is so... carbon neutral to refine) and build trice monster high voltage lines on towers and poles.. Then think to densely populated areas, where peple lives in blocks and has no own park place. Entire district of our old cities are like that. I wonder where they will charge their e-cars. No , the populace will have to take the bike, at best an e-bike, that they can charge in their small bedroom.
Does this look insignificant to you? Do you really think that there is a solution by 2036? Or that we come close by 2030?
Ah, Greta will not let you build any new Nukes that, BTW takes an average of 20 years to build if all goes well and no NIMBYs show up. I can understand her.
No, I think your numbers are out of a couple of orders of magnitude.
125 Wh? That is the consumtion of a small kitchen tool for one hour, like a mixer or a coffe grinder. Not for moving around a one ton or more vehicle. A small Nissan Leaf has a WLTP consuption of about 20kWh, for 100 Km. If it does 60 Km in such hour, it will take about 12kWh, 100 times more of your 125 Wh.
Your same car at 2500/365 takes about 7kWh a day in average, that, even if fantastic, is 50 times more than your 125 Wh.