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I suspect your Kwh figure of 142.9 might be a bit high? for a long steady drive, but at 40MPG I suppose you have a point, however unpopular it is in an EV forum. In a cold climate it would even be more pronounced. But how many ICE are 40MPG these days, and I hear the gas price pendulum is expected to swing higher soon, so there is that.
I still think this is a needed change for the better good, but I don't think it will do anything to curb all the local charging currently going on. If anything it might even get worse now that folks with existing cars know just how much it would cost if they didn't have unlimited SC.
Do the credits roll over year to year?
Answer: they do not
Thank you, MP3Mike & FlatSix 911.
Regarding the sentence, "If the car transfers ownership, credits are reset on the date of the transfer", does this mean the second owner automatically gets a free 400 kWh during his first year of ownership, or would there be some type of proration adjustment based on the fraction of a year and kWh usage by the first owner?
Most people aren't driving 40 mpg cars. And most people don't want to drive a diesel.
Also most people should be starting from home with a full battery.
The Tesla figure is 2.5 miles per kwh (400kwh-1,0000 miles) so I was being more generous than Tesla. The Idaho National Laboratory testing shows AC Consumption 340 Wh/mi at 70mph which is 2.94 Mkwh so I took a number of 2.8 Mkwh figuring typical AC load, speeds higher than 70mph etc.
I ran the numbers and I was surprised myself at the results.
10 Best Gas and Diesel Cars That Get 40 MPG on the Highway | Edmunds
So, basically a high performance luxury car (Tesla S) saves about 10-12.5% compared to minimum performance cars.
Well, if you are going to use personal anecdotes: I've had solar panels for many years and pay nothing for electricity. My Model S has free Supercharging so I pay nothing for electricity. I think it is fair to say that if I started driving an ICEV again it would cost me more than zero to fuel, even at 62 mpg.Currently, I'm driving a lifetime 62mpg car. At ~$2.50/gal and roughly 37mpg, and $0.17 for residential electricity, my electric miles currently cost within a penny per mile of gas miles, and Supercharging at $.21 would flip that.
Granted, that's externalizing the cost of pollution from the ICE, but that's not likely to get wrapped into the price of gas under the next administration.
Nevertheless, the current Teslas are expensive cars — even the bottom-of-the-line one that I purchased used. If cost is the criterion these are not the cars to own. Quibbling about small differences in fuel costs between a Tesla and an ICEV strikes me as silly. Even the Model 3 won't be all that inexpensive to purchase or own until one can pick up used ones a few years after they are introduced. If TCO is the goal, pick up a gas-sipping used ICE car. Meanwhile I will continue to enjoy driving my Tesla, with the free fuel being just a nice bonus, not a reason to own one.
It would be interesting to know what the average Tesla actually uses per year at a supercharger
We carefully considered current Supercharger usage and found that 400 kWh covers the annual long-distance driving needs of the majority of our owners.
.20/kWh in CA. Not bad at all.
Higher than local home charging, but still cheaper than gas (I think)
If they are on a TOU plan, yes. Those let you charge at .13 to .14/kWh. If you are on a Tiered plan for whatever reason, no. Then your rate could be into the .30s once you hit Tier 4
Heavy energy users in California will likely benefit from a TOU plan. As Az_Rael mentioned the best off peak rate we get from SCE is .14 in winter, .13 in summer. Long before we got a Tesla, we got the TOU plan, and we've probably saved money every month since we converted.In NoCA with PG&E I am on a EV-A TOU plan (and have solar). From 11 pm to 6 am I pay $0.11/kw, so about $1.10 for 30 miles of driving. For sure I would rather pay that at home than twice that on the road. But of you need to charge during the day on my plan, it's $0.35-$0.40/kw.
I'm curious if the unused credits will roll over annually?
I believe the published policy says no, the annual "allotment" resets on every delivery anniversary
I figured that would be the case.