10k mileage mark. What hauling-butt really costs - analyzed with pics

Awesome. Great info! That's quite a lot better than the $ 0.33 I pay per mile (the Netherlands though, we get ripped off everywhere)

One question though, what's the difference between the net usage and what the Model S gauges tell you. I'm assuming they don't account for charging losses and such

That sounds about right. I never "haul ass" and I'm getting around 3 cents per mile or slightly lower. I just tell people 3 cents per mile if they ask. Much less expensive than even the best ICE vehicle. Obviously depends on how you drive and what you pay for electric. I'm assuming some folks (like Jerry :wink might be significantly lower.

Yes, I'm on a flat rate of .09 cents (I believe), which equals 29.8 cents/mile in this scenario. And I've heard of others, who's overnight TOU rates are 3 cents/kWh... which would put this kind of scenario in the 10 cents / mile range. Epic!

Based on my TOU rates and if I drive like OP (388 Wh/mi), driving my usual 20,000 miles in a year will cost only $500 compared to over $1,300 to fuel my Prius with gas for the same number of miles. Considering that I almost always drive at or below the speed limit, I'm expecting my actual costs to be even lower. Since I'm saving about $1,200/yr with my solar PV system, I can fuel my vehicle completely and still save over $700/yr with my solar array versus without solar and paying my utility company.

Great info, but SOLAR IS NOT FREE. Sheesh. A typical solar installation solar costs around $.10 to $.12 per Kwh/hr in a sunny part of the country when you factor in the initial cost of the array amortized over the useful lifetime of the equipment. YMMV.

I talked with somebody who had very low electricity rates like the ones the OP has, and he calculated he spent more on tires per mile (on the order of 2-3x) than on electricity.

I, on the other hand, pay roughly $0.30 per Kwh so the calculations are closer to that of a hybrid car like a Prius. But so much nicer than one. :biggrin:

AmpedRealtor: Do not assume you will drive below the speed limit after receiving your Model S. I drove my Prius below the speed limit. My lifetime average is 356 Wh/mi with the Model S and I rarely drive the speed limit. It's a different animal all together. I have 11,500 miles at this point and it's just fun to drive.

Cosmacelf said:

Great info, but SOLAR IS NOT FREE. Sheesh. A typical solar installation solar costs around $.10 to $.12 per Kwh/hr in a sunny part of the country when you factor in the initial cost of the array amortized over the useful lifetime of the equipment. YMMV.

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My solar lease sure feels "free" to me - it costs me $2,040 per year in lease payments to chop $3,200 off my annual electricity bill. That is a net savings of $1,200 annually after factoring in the solar lease payment, and with no up front cost for the equipment. I don't see any down side to this as long you are offsetting more in electricity charges than the amount of the lease payment. I save approximately 1.5x the solar lease payment in electricity charges due to my TOU PV plan. As a business person, if someone told you that spending X dollars per month in advertising would pay you back 1.5X in business, it would be a no-brainer right?

jaysquyres said:

There may be a slight difference from when the car isn't moving (Cooling off car with AC or battery cooling.) The numbers should still be correct because the meters are within 1 ft. of the High Powered Wall Chargers, and nothing else is attached. Total electrical usage from meters divided by Tesla reported mileage = actual electrical usage per mile.

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I'd estimate that over the five months you've owned the car, you've also used an additional 3.5 kwh per day as a vampire loss for a total of 120*3.5 = 525 kwh.

In addition, there are charging losses that are not accounted for on the Tesla screen. These are probably around 7% or 8% of the total that the screen indicates, for a total of about .075 * 3859 = 290 kwh.

Totaling vampire losses and charging losses, 525 + 290 = 815 kwh, I'd guess you actually must have used 544 + 815 = 1359 at the free stations.