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TeslaFi "Gas Saving" for the UK

Discussion in 'The UK and Ireland' started by Compuguide, Sep 22, 2019.

  1. Compuguide

    Compuguide Member

    Joined:
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    Location:
    London
    Our peculiar system of Miles for Road distance measurement but Litres at the petrol pumps complicates things when trying to set up TeslaFi's "Gas Saving" feature.
    For the uninitiated this is a TeslaFi statistic that is designed to show how much cheaper the cost of electricity is compared to what you were consuming on your old I.C.E
    Now, in my case my previous car was a 16 year old Nisan Micra Tempest.
    It was pretty inefficient, at about 35 miles per gallon
    So here are my sums:-
    miles per gallon 35
    miles per litre 7.698924 [35/4.54609 (litres per imperial gallon)]
    Kilometers per litre 12.39019 [7.698924*1.60934 (Kilometres per mile)]
    Have I got this right?

    Below are the numbers I have plugged into TeslaFi. (The "kWh Gas Equivalency" number of 9.7 for a litre of petrol I got from Google)
    The "Gas Cost" of £1.25 per litre is from the forecourt of the garage I used to use
    Gas Savings.png

    I'd be interested in anyone else's numbers.
    Thanks
     
    • Like x 1
  2. WannabeOwner

    WannabeOwner Well-Known Member

    Joined:
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    Messages:
    5,758
    Location:
    Suffolk, UK
    As an alternative route (which might validate the route you went?)

    35MPG Nisan Micra Tempest

    Petrol £1.25 a litre

    1.25 * 4.546 = £5.6825 per (Imperial) gallon

    35 Miles for £5.6825 = 16.24p per mile
    35 miles is 56.32704 kilometres, 56.32704 km for £5.6825 = 10.09p per km

    I think converting refined petrol to kWh of electricity is fraught ... I can grasp setting light to some petrol and releasing some energy :), but what about well-head-to-wheels? or even from prospecting-to-wheels? vs. Dogger-bank-Wind-prospecting-to-wheels ...
     
  3. Fullerene

    Fullerene Member

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    Dorset, UK
    • Informative x 1
  4. Yev000

    Yev000 Active Member

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    Knaphill
    PMG.JPG

    This is what I got mine set as.

    According to TeslaFi I already saved £2 from my pottering around last 2 days. We'll see what a weeks commute will be like

    drives.JPG
     
  5. Compuguide

    Compuguide Member

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  6. Yev000

    Yev000 Active Member

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    Neither am I.

    My old BMW had 27 MPG so I'm trying to compare to that. The fuel is in £ not pennies? so 1.25 is correct?

    Then "imperial gallon of gasoline contains 28.0611 KWh"
     
  7. Compuguide

    Compuguide Member

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    Yes, I think 1.25 is correct but the black art of TeslaFi's underpinnings evade my simple brain (whada I know?)
     
  8. Mr Miserable

    Mr Miserable Supporting Member

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    I'm not sure putting 1.25 is correct when everything else refers to gallons.
    I think you should put 5.675 in that box (1.25*4.54) ie cost per imperial gallon.
     
    • Like x 2
    • Informative x 1
  9. Yev000

    Yev000 Active Member

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    Thank makes sense, thanks.

    drives.JPG

    That looks much better now.
     

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