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Great Dane
Member
Ok here are the July numbers with a twist
My electric bill including the car was $160. car usage $44 973 miles
lifetime 291 climbing because of heat without tint
now coming back down because I got Photo sync 35 percent all round
I want to be at least top 10 in FL
It is a fun game to see how efficient you can drive
My electric bill including the car was $160. car usage $44 973 miles
lifetime 291 climbing because of heat without tint
now coming back down because I got Photo sync 35 percent all round
I want to be at least top 10 in FL
It is a fun game to see how efficient you can drive
callmesam
Member
Lower Wh/mi means less electricity used. You purchase Wh by the kWh from your electric company so 1000 Wh = 1 kWh. If your electricity rate is 10 cents per kWh and you drive at 300 Wh/mi it costs about three cents to drive a mile.
Rated range measures how far you can go on what's left of your current charge.
Neither is more important than the other, they measure different things.
Things will be much clearer if you think in terms of fundamental concepts, and how they are measured. The battery stores energy. Power is a rate of consumption of energy per unit time.
The standard unit of power is the Watt (W). (Thankfully this is agreed by everyone on the planet.) A kilowatt (kW) is 1000 Watts. (The metric prefix "kilo" means 1000).
A power of 1 kW for one hour represents 1 kWh of energy. Energy = Power * time. So, likewise a power of 2 kW for half an hour would be 1 kWh of energy. Again, the "k" means 1000, so 1 kWh is 1000 Wh.
People are generally more interested in measuring how much energy is used over a given distance, rather than a given time. So if you measure energy in Wh, you could measure your energy use per mile as Wh/mi. A smaller number would mean less energy usage per mile. That is definitely what you want if you want to go further!
"Rated miles" is a measurement of energy, expressed assuming a certain efficiency (somewhere around 300 Wh/mi - ask Tesla what the exact figure they use is). It can be a misleading number, as what's in the battery is energy, not distance. You can use that energy to run the climate control for days, without moving the car, in which case your "rated miles" goes down but your actual miles traveled is zero.
So, in short "rated miles" is a measure of energy, "Wh/mi" is a measure of energy per unit distance. There is no concept of one being "more important" than the other.
AC1K
Member
fluxemag
Member
320Wh/mi after 17k miles. I drive it like I stole it since I get free electricity, so that's pretty good. Having just moved to Oregon in Feb, it will be interesting to see what a full winter does to that number. I will be pre-heating a lot for comfort reasons.
RichardC
Cdn Sig & Solar Supporter
199 Wh/km at 30,000 km from December 2012 to today - year round driving
167 Wh/km at 9,000 km from April 2014 to today - warm weather driving
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Amazing efficiency!
You are getting the same range from a 60 as most of us are getting from the 85s.
167 Wh/km at 9,000 km from April 2014 to today - warm weather driving
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Summerconsumption since last part of May:
158 Wh\km aka 255 Wh\mile
Lifetime 194 Wh\km due to 224 Wh\km-winterconsumption.
Thanks to Jerry33 for some ecodriving-hints
Amazing efficiency!
You are getting the same range from a 60 as most of us are getting from the 85s.
How are you getting free electricity? Other than SC stations the only options I have are solar and the power company, both of which are far from free.
paco3791
TMC OG
If they are anything like me I can charge at work for "free" every day. Free to me anyway.
dirkhh
Middle-aged Member
Welcome to Portland. Have you joined the local PDXTesla group, yet?
The winter here is more of a joke. What kills the Wh/mile is the rain and the rotten roads.
I've managed to sort out my information and I'm now keeping track better. My P85 is, oddly, running on PS2 tires in the back and Contis in the front. And I've figured out that short trips in the Florida heat with A/C on full blast, or precooling the car, are a large part of what makes my overall energy use much higer. But anyway, for whatever it's worth:
Format: total miles, miles this period, watt-hours per mile
Notice the first line covers about 13 months, with monthly data from then on.
Is this monthly tracking useful, or is the only useful data the lifetime average? If only the total is useful, that's 8166 miles @ 365 Wh/mile.
Format: total miles, miles this period, watt-hours per mile
- 130329-140430: 7275, 000, 366
- 140501-140531: 7775, 500, 366
- 140601-140630: 8026, 251, 339
- 140701-140731: 8166, 140, 347
Notice the first line covers about 13 months, with monthly data from then on.
Is this monthly tracking useful, or is the only useful data the lifetime average? If only the total is useful, that's 8166 miles @ 365 Wh/mile.
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