Ton - Miles / kwH Metric

[Owner]

I have been calculating metrics on electric car efficiency on my blog. Ton - Miles / kwH seems like a good metric to judge the engineering efficiency of the car. It isn't as practical as a day to day MPGe or Miles / kwH, which I prefer. But it does provide an insight into the engineering built into the car.

Thoughts?

 

[jdh]

Don't you think the 60KWh version will be lighter than the 85KWh, at least partially accounting for the increase in MPGe?

If you were to assume the same Ton-Miles/KWh for both models, then the 60KWh should weigh 4280lbs (367lbs lighter).

I guess we'll see when Tesla publishes the curb weight for the 60KWh model, or someone takes delivery of one and takes it to the scales.

 

[Owner]

I agree the weight of the 60kwH will be lighter. But I haven't seen an official number. Where did you get your 367 lb number?

 

[jdh]

My 367lb number was based on your table assuming equivalent efficiency at Ton-Miles/KWh for both models. I just solved for X where Ton-Miles/KWh = 6.11 and KWh/100 Miles = 35

 

[ItsNotAboutTheMoney]

My 367lb number was based on your table assuming equivalent efficiency at Ton-Miles/KWh for both models. I just solved for X where Ton-Miles/KWh = 6.11 and KWh/100 Miles = 35

Ton-miles really isn't a good measure when you include the car. What matters are passenger-miles or cargo-miles. Or maybe fun-miles.

 

[jerry33]

Ton-miles really isn't a good measure when you include the car. What matters are passenger-miles or cargo-miles. Or maybe fun-miles.

Aren't fun-miles 90%+ ?

 

[Owner]

Ah, reverse engineering based upon the Mpge numbers in effect. I'll wait to update the table when the actual numbers are released, and they will probably be very close!