I agree on the technical side, you have two EV, one charging faster than the other, so in theory it is consuming more energy faster and ends up paying the same price. So put it in perspective, you have new Leaf+ and a new Tesla Model 3, for the sake of argument, both are using a QC next to each other from the same company. The Leaf is charging at 50 kW, the Model 3 at 250 kW. First, which is creating a greater demand on the grid, well the Model 3. Which one will finish first, well let's say for the sake of argument, both are going to charge for 15 minutes and go about their business, neither owner is in the middle of a road trip. After 15 minutes, the Leaf owner consumed (15/60 * 50,000) 12.5 kWh of power. The Model 3 owner consumed (15/60 * 250,000) 62.5 kWh of power. They both nod to each other, wish each other a good day and drive off. They both get a text message with the bill for the time. They both were only charged a session time of 15 minutes for the same price, so basically the Model 3 got 5x more power for the same price as the Leaf+. Now take those numbers and plug them into utility bill for a consumer and they will ask "why did 5x more power cost the same when the only difference was the vehicle it was being fed into?" and that's where consumers get the rub.alozzy wrote: ↑Thu Oct 28, 2021 7:47 pmI find it really annoying that a newer EV owner can charge at a 100 kW rate, while my LEAF charges at a much lower rate and then drops even lower as my 24 kWh tops off, yet we both pay the same amount ($0.21 per minute is typical). In winter, I pay even more as the LEAF charges even slower...
Now, on the flip side, let's be the charge station provider. I build an EV QC station with 5 stations. I want to maximize profit because we ain't doing this out of the goodness of our hearts. The power company won't give me a discount for using "less power", I only get the lower rates the higher I go. So someone charging at 50 kW is going to cost me more than someone charging at 250 kW. The next issue is that I will probably have more people charging at the lower rates than at the higher rates. I also don't want someone having an EV plugged in for hours charging at a low rate and trying to hit 100% SOC also taking up a spot for another customer that could be charging and paying. That's where all those session fees come in, to make up the difference. When then the root of the problem is the power company is only giving discounts for using more power, not less.
So, from my own experience, this is what I've noticed.
To charge my Leaf, Electrify America is the cheapest as it's charging mainly for the power and not the time so much. I can put 200 miles of range on my Leaf for less than $7 most of the time if the battery is low enough and the temperature is good.
Using Blink QC stations, they charge by the minute. That same session to get 200 miles of range ends up costing $32 because of the time needed.
EVGo is a hybrid model with a small charge for kWh consumed, but still a hefty session time charge, so that 200 miles of range ends up costing about $18
These stations are all right next to each other where I live but the price difference is insane, no wonder consumers are confused by all of this.
Imagine if all the gas stations in your town had prices that varied from $2/gallon to $10/gallon for the same gas and not knowing that you are paying too much at one station when you could have driven to another one for cheaper. That's the rub that I think a lot of new EV owners feel when they find this out and for those of us with the technical skills to know what the power consumption of the vehicle means, it seems like some networks are being sensible with pricing and the others are just price gouging the others that don't know any better until they find out from the friend and get angry.
That is only for those that have that choice like where I am, imagine if your only QC network in town was Blink and you are stuck with those high prices all the time...