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Your hunch is correct. At-home charging tends to be the cheapest while supercharging is going to command the highest premium. I live in SoCal which has high EV

Your hunch is correct. At-home charging tends to be the cheapest while supercharging is going to command the highest premium. I live in SoCal which has high EV adoption with loads of chargers everywhere and off the top of my head. Off-peak home charging costs about 7 cents / KWh. My car's battery has about a 71KWh capacity so that's about $5 for a full charge. Super charging prices vary on the time of day and region, but let's pick the worse time. You'll see about a 20-40 cents charge / KWh. That will cost me about $15-30. You can see those prices go down if you're charging at good hours though. Tesla will have morning incentives for instance. Supercharging costs are higher because: * Supercharging stations (for Tesla) cost about 300-400k USD per unit. * Electricity providers charge a premium for higher amps/volt service. As far as I know, Tesla doesn't try to make a profit with chargers. They keep it close to cost.

vel0city 5y ago
> Electricity providers charge a premium for higher amps/volt service. This can somewhat vary and can depend on your time horizon and usage. Energy providers like reliable usage, they don't usually like massive swings in usage. If you're able to reliably tell the energy providers how much energy you're going to be using at which times, you can sometimes get your per-kWh price cheaper than the regular wholesale rates even though you're pulling a large amount of energy. Then if you're timescale is long enough the higher upfront cost of the equipment to deliver the power really isn't crazy expensive compared to the full cost of all the energy you've pulled through it over a decade. Obviously this varies quite a bit even in the US, there's lots of variations between the states and even then there can be some variation within a state. I can definitely say though that the datacenters down the street from me pay waaaaay less per kWh than I do. I know because I know the retail prices they charge, which is still way less than my residential service meanwhile they've got redundant grid connections, generators, and giant batteries to pay for as well.

vel0city 5y ago

> Electricity providers charge a premium for higher amps/volt service. This can somewhat vary and can depend on your time horizon and usage. Energy providers like reliable usage, they don't usually like massive swings in usage. If you're able to reliably tell the energy providers how much energy you're going to be using at which times, you can sometimes get your per-kWh price cheaper than the regular wholesale rates even though you're pulling a large amount of energy. Then if you're timescale is long enough the higher upfront cost of the equipment to deliver the power really isn't crazy expensive compared to the full cost of all the energy you've pulled through it over a decade. Obviously this varies quite a bit even in the US, there's lots of variations between the states and even then there can be some variation within a state. I can definitely say though that the datacenters down the street from me pay waaaaay less per kWh than I do. I know because I know the retail prices they charge, which is still way less than my residential service meanwhile they've got redundant grid connections, generators, and giant batteries to pay for as well.