They’re misrepresenting (at least) the price of a kWh of electricity. I pay $.13 base price. But that goes up when you start using lots of electricity per month, which an electric car would certainly do in spades.
Tier1 - 477 kWh @ $0.13
Tier2 - 121 kWh @ $0.15
Tier3 - 139 kWh @ $0.23
Tier4 - 14 kWh @ $0.27
Tier5 - [the rest] kWh @ $0.30
And this is on my current bill after I’ve downsized. Last year in a large house and property they were gouging me at $0.54 on Tier 5. I was hitting >$700 per month electric bills in the summer.
And that’s just the generation cost! There are many riders based on usage!
That would depend on where you live and what plan you have.
My cost is actually fixed per kWH but varies with the cost of natural gas.
Interesting price chart you have there. The commerical electrical rates where are I work are the inverse of that. As your use goes up the rates go down on a scale like you described, just in much bigger incriments.
The irony of this is if you make energy saving upgrades it does not lower your bill in proprtion to your use. For example, your average cost/kwh might be $0.125 on 250,000 kwh. So you think a program or upgrade that saves you 20,000 kwh will save you $2,500. But in reality you'll only save $1,600 because the top tier that 20,000 kwh came from only costs $0.08 / kwh.
At that price it's cheaper to generate your own electricity. Natural gas, or whatever fuel is cheapest at the moment, could power a microturbine. The waste heat could be used to help heat the house in winter or drive compressors to cool it in summer. At a power plant typically half the energy is lost as waste heat.