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Tesla Super Charger Question - How can I tell how much electricty I have replenished my car with from a Super charger over time?

So if I car to the gas station and tell the guy to filler-up, I know that I just spent $50 to fill up my ICE car and how many gallons... etc.

So I've gone to the Super Charger a few times and it dawned on me, well I had to pay to gain access to the network of Superchargers, if I wanted to estimate how long before I see a return on my investment?

How can I tell the total sum either by individual visits or a report that illustrates all my visits and the amount in Kwtz or mileage have I consumed from the Super Charger network?

Right now I can only guess that it might be a few years before my breakeven point.

It's just another perk that I like to share with the folks that ask me how much free electricty will you get out of the Super Charger network.

Will Tesla provide us with a visual report on the dashboared that keeps this record, much like the tripometer calculates the total mileage/Kwtz used thus far?

No report so far, and no indication Tesla will in the future. You'd have to record it manually.

I'd be surprised if Tesla wasn't collecting that data for their own use. They might provide the data for your car if you ask.

Model S will meter how many kWhs it takes during a charging session. You have to go to Controls>Settings>Units & Format> and switch charging units to energy if it's currently set on distance. You then would have to manually log how many kWhs you received during each Supercharger session and do the math.

Or you could keep VisibleTesla running all the time.

Look at it this way... $2000 would buy roughly 500 gallons of gasoline. If your previous vehicle got, say... 25 miles per gallon on the highway... That means your break even point is 12,500 miles of driving on a Supercharger.

That works out to maybe six road trips for most people around here.

Me? I'd blow through that in less than four months. Especially knowing that it would be 'free' for every mile thereafter. Money well spent.

@ stevenmaifert: Thanks I will look to do this in the short term just to get an idea.

@ Red Sage:
My SUV was getting me ~ 18-20 MPG and I average ~32,000 miles per year just to give you an idea of my driving.

Although I do not visit the Supercharger statiosn in Hamilton NJ everyday, I make at least 2 visits per week and charge ~100 miles on those visits. It's taking about 30 - 40 min to charge which is why I don't go everyday and the other reason being that I have to pick up junior for karate classes and I'm running short on time. My daily round trip to and from work with a stop to drop off junior at school is ~130 miles DAILY!)

At this pace it will take me a couple years to see the ROI. That should change for the better when the Edison Supercharger station comes on line, it's closer to home.

Good thing I got my TOU (Time of Usage) meter from PSEG lower price off peak hours (~.08 per kilowatz) FREE !!!!

Don't forget to account for your time in your calculations. 30-40 minutes per 100 miles can eat into your ROI. Being reasonable, you can discount by some factor, excusing your time there as not totally a "waste" - shopping, eating, doing work in the car, whatever.

I know everyone says "....I paid $2000 for "free" use of the supercharger", but I look at it in a different way. If one spent $90K on a S-Class or 7 series, would MB and BMW give you a voucher for free gas, for life for all of your road trips.....? No.

@Red Sage I'm not sure your calculation is really valid.

The fact that you use electricity rather than gas to fuel the car is already priced in; it's true of all variants of the Model S irrespective of whether they have the supercharger option enabled.

Adding the supercharger feature doesn't enable you to switch from expensive gas to free electricity, it enables you to switch from cheap electricity to free electricity. How many miles do you have to travel on supercharger energy to recoup the cost of the offpeak electricity you're saving?

Of course it also makes journeys that would have been hard/impossible entirely practical, but that's a whole different value proposition that you wouldn't measure based on fuel costs - you'd be better measuring it in terms of not having to have a second car. $2000 to avoid having to keep an ICE for long journeys is a fantastic deal IMO.

Agree with mgboyes, the appropriate comparison is charging at home compared with supercharging, not gas. If Rolando is charging ~200miles per week at superchargers I would estimate that's about 70kwh of charge weekly, next step is heavily dependant on home state but using the national average of 11c/Kwh he is saving $7.70 per week and it will take 4.99 years for his supercharging to save him $2000 worth of home charging. If he is in California with 30c+/Kwh power then this may be as low as 18 months.

Oops just saw the follow up, if you are paying 0.08c/Kwh then you are saving $5.60 per week and it will take you 6.9 years to break even compared with simply charging at home.

mgboyes, excellent point. I never thought of it that way.

@docrob: Excellant point !!!

@Stevenmaifert: I tried your suggestion and was able to calculate the following

As I'm sitting in my car I'm seeing the kWh add up so I had started charging with 80 miles remaining.

As I reached 100 miles being added back into my car I gained 30 kWh

I ended up charging 150 miles for 45 kWh

so @ .08 cents per kWh = $3.60 and took about 40 min to charge, I started as the second car had just begun charging ahead of me, then a third Tesla, then a fourth. Mind you this is the exception, I normally only have time to charge ~ 100 miles which is 30kWh or $2.40

So even if I average $3.00 ( mid point of the two amounts above that's $6. so more like closer to 6 years.

The good news is the Menlo Park mall in Edison NJ I hear is coming online soon. therefore, I might be able to get 3 days a week at a minimum.

Perhaps, that Florida trip will bring down the time it takes me to break even, heck Boston is nice too for a long weekend...

Thanks everyone for your comments this Forum rocks...

@redstage: your spot on !


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