# Forums

## Model S 1 year kWh consumption

Hi folks,

for whose you possess a model S for more than one year:
With all the recharges at home (or elsewhere) and driving around 22-25k km a year, do you have any figures regarding your total consumption of kWh with the model S (precise your model) for charging ?

Thanks.

jordanrichard | 25. heinäkuu 2014

I am not quite at 13,200 miles (22k km), but I am almost at half that, 6894 miles and have used 2240 kWh. So you can double my total kWh usage.

Are you looking to calculate costs of charging? If so, that will be tricky based on mine and others total usage. Some of those 6,894 miles were from energy I got from the SCs which was free. I am only now starting to track how many miles I am getting from the super chargers.

I have a S85.

mrdaniel | 25. heinäkuu 2014

Well, for an all season environment with hills and a mix of highway and city driving, my one year average was in the 340-350 Wh range. So, multiplying 25,000 miles yields 8625 kWh of total used energy by my S85.

robert | 25. heinäkuu 2014

P85 Sig. from Oct 4, 2013

Am at 10'034 km = 6'236 miles, incl a full Swedish Winter with double-studded Nokia R8 Winter tyres.

Lifetime energy consumption: 1'615 kWh = 259 Wh/mile

Summer tyre consumption: 249 wh/mile so far, but going down as I learn.

Robert

CQN | 25. heinäkuu 2014

27,500 miles since 4/1/2013. 295wh/mile. Mamainly flat surface driving in Southern California.

jai9001 | 25. heinäkuu 2014

My one year stats were:

11,500 miles

.327kwh/mile

Total kWH = 3761

ramrod | 25. heinäkuu 2014

I live in the Chicago area and I have a 60 kwh battery.

At one year, I had about 12,000 miles and averaged 303 kwh/mile. That was an extremely harsh winter, though, so this might be as bad as it gets.

Ph03n1x | 25. heinäkuu 2014

Thank you guys,

this give me indeed some indications on the cost.
I do not have a SC near my place, so I would have to rely on my household electricity for charging.

I just wanted to have an idea of an annual average electricity cost if I had to drive a model S for about 22k km a year.
That's very incredible in term of economy regarding fuel.

My avg electricity cost here is 0,07\$/kWh and the more expensive gaz around 1.50\$/L ! (canadian dollars)

all in all, it would cost me a bit more than 600\$ of electricy per year charging my model S, comparing to the 2 300\$ of gaz per year I pay... Another argument for the home council :P

hfcolvin | 25. heinäkuu 2014

My one year numbers from this past March - 14941 miles, 4816 kWh, 322 wH/mile. I was averaging about 305 wH/mi until the very hard winter drove that up.

In the first year ballpark estimate of about 1500 miles of free electricity from superchargers and other public chargers. A precise calculation of the total energy cost would require adding in the vampire loss, which for the first 8-9 months I had this car would be 2 or 3 kWh per day. That has significantly dropped now with the sleep mode, however and is maybe about about 1/3 kWh (1 mile range) per day.

My electricity bill went up about \$50 per month, but that also includes some charging of our plug in Prius.

balabanshik | 25. heinäkuu 2014

One thing to consider is that many new owners report a marked increase in driving distances with Model S... be warned.

Ph03n1x | 25. heinäkuu 2014

I used mrdaniel numbers to get a little margin on consumption as I do not planned to get a s85.

nickjhowe | 26. heinäkuu 2014

Check out Tim Sexton's latest post over at TMC of his Plug In America survey results, the PDF shows Wh/m figures for hundreds of Model S - they range from c.250 to over 450.

You can also look at the table on the plugin America site - it lists data for every car.

Sorry don't have the URLs to hand.

PaceyWhitter | 27. heinäkuu 2014

One thing to note is that people have been listing energy used. That will have to be increased slightly (5-10%?) to get energy consumed due to charging inefficiencies and vampire loss.

Bighorn | 27. heinäkuu 2014

@pacey
CW says 15 % charging loss

bevguy | 27. heinäkuu 2014

I don't know the exact charging loss but it must be substantial. My whole garage heats up when my Tesla is charging, even at the low 26 Watt charge level I use.
Whatever, it still will be a lot cheaper than buying gasoline
. Considering the rotten fuel economy I might expect with an ICE car of even vaguely similar performance levels, my Tesla "fueling" costs about 1/4 the cost of an ICE car. If you drive your Tesla carefully you can easily get 270 or so. Most of my miles are non urban.

mrspaghetti | 28. heinäkuu 2014

@balabanshik +1

You'll be looking for reasons to drive it :)

CraigW | 28. heinäkuu 2014

I think this is kind of a crazy question. If you drive a Tesla, you will drive more trip miles, therefore you will use the SC and all cost analysis will be bogus.

I have owned a 60 since January 2013. I have solar panels and have tracked usage since I put them in. Since I brought home the Tesla I have used an average of 9.8kWh more per day than previously. If I were paying for all kWh usage, i.e. no solar panels, I would be paying at the rate of \$.183/kWh. This equals \$1.79/day. At 365 days I would spend \$655/year on fuel energy.

At \$2300/yr for gas you are about 28% the cost + maintenance.

P.S. In that time I have put 31,100 miles on the car, much of it on long distance trips, as I average about 42 mi/day when not traveling.

johncrab | 28. heinäkuu 2014

Just from a bit of spot checking here based on the numbers owners are posting, it seems that 103 mpg equivalent is rather common in the Model S based on 33.56kwh/gallon energy content of summer gasoline. I really like this number. :)

Volleyguy | 28. heinäkuu 2014

I will throw some numbers to stir things up. Our Fusion Energi uses less watts per km or mile than posted here even then the MS with the 60kwh battery.

I am not sure if it is due to less h.p or something else maybe lower weight as our small battery is less than 8 kwh.

Or is it something else?

I am talking when in all electric mode of course not counting when the gas kicks in!

johncrab | 28. heinäkuu 2014

It's lower weight. To move it less work (in the engineering sense) is being done. It's like the difference in mileage between a Fiesta and an Escalade. The Model III will be smaller and lighter so it will get better "mpg" than the Model S, but it's an apples to oranges comparison. I just find it nice that a big, heavy, roomy car like the MS can get the equivalent of 103mpg when the closest car near its class gets about 20. This speaks to the grotesque inefficiencies of burning oil on a small scale to turn it into motion.

andex23 | 28. heinäkuu 2014

36k miles on P85, average energy usage is 327kwh/mi. With my solar system installed, I get paid 50 dollars a month to drive the car! Can't beat that.

Volleyguy | 28. heinäkuu 2014

Thanks johncrab

No argument on the "grotesque inefficiencies" of burning oil. One thing that shocked me getting electric was around town 25% regen braking. I would not have guessed so high and of course all of the idling now not happening.

What I was wondering about is there also something to do with my 12 Volt battery does what other cars do and the lithium battery is for just driving, does Tesla not do everything from the big battery? (therefore needing more electricity)

Since we only have 100 hp electric we do not get the chance to use 300-400 like you guys do! (must use some more)

jordanrichard | 28. heinäkuu 2014

The main battery is for driving. The 12V in our cars runs the rest of the car.

AndyO | 28. heinäkuu 2014

My understanding is that the HVAC runs on the main battery. I'm not sure about the power steering and brake vacuum boost but they're probably 12V. I'm sure another pro on this list will know.

jman | 23. elokuu 2016

CraigW, or anybody else for that matter.....When you plug in is only for a couple of hours? Is it every other day?

I plug in every other day for a couple of hours at a time. We have solar panels. I am trying to figure out how much I actually spend KwH wise and cost wise on the this, using my solar. I am working with my town to figure what my meter should really be reading. I have a 70D and don't drive more than 50-60 miles in one day.