Prime electric bill cost to operate

Discussion in 'Prime Plug-in Charging' started by PriusPrimeOwner, Jan 17, 2017.

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  1. PriusPrimeOwner

    PriusPrimeOwner New Member

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    First month with 2017 Prius Prime premium model added $69.00 to my current electric bill. It equals to about $2.30 per day. Granted, I did not charge it everyday. In December average MPG is 80.4 and Currently in January MPG is 72. If anyone is curious.

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    #1 PriusPrimeOwner, Jan 17, 2017
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  2. bisco

    bisco cookie crumbler

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    well done! how much gas saved?
     
    #2 bisco, Jan 17, 2017
  3. PriusPrimeOwner

    PriusPrimeOwner New Member

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    I did not really keep track. A drive to work and back. I can do on almost one charge about two miles beyond what it will do on one change.

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    #3 PriusPrimeOwner, Jan 17, 2017
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  4. Prius Maximus

    Prius Maximus Senior Member

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    good info, thanks!

    What do you pay per kwh?
     
    #4 Prius Maximus, Jan 17, 2017
  5. PriusPrimeOwner

    PriusPrimeOwner New Member

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    Well month to month it varies. Last electric bill was .11 per kwh

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    #5 PriusPrimeOwner, Jan 17, 2017
  6. priuscatprimeguy

    priuscatprimeguy Senior Member

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    My landlord charges me $15.00/mo. Since I'm in a 15 story apartment the electricity is commercial so my landlord pays .9 cents/KW.
     
    #6 priuscatprimeguy, Jan 17, 2017
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  7. Samprocat

    Samprocat Active Member

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    I want to have your landlord

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    #7 Samprocat, Jan 18, 2017
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  8. EV-ish

    EV-ish Active Member

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    OP, if you are using one full charge once a day, that works out to about 200 kWh a month extra. At 11 cents a kWh the bill should have increased about $22 from the EV.
     
    #8 EV-ish, Jan 18, 2017
    Last edited: Jan 18, 2017
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  9. EV-ish

    EV-ish Active Member

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    Actually, you want my landlord. He has agreed to let me install PV. I am going to pay about two cents a kWh over the lifetime of the array.

    If I move he'll keep my labor invested in the installation and the electrician bill will be a sunk cost. I'll take my panels and inverter to the new place, or sell him the array at cost.
     
    #9 EV-ish, Jan 18, 2017
    Last edited: Jan 18, 2017
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  10. bwilson4web

    bwilson4web BMW i3 and Model 3

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    We often see two battery capacities: (1) maximum electrical capacity, and (2) operational capacity with the high and low buffers taken away.
    • $69 / $.11 ~= 627 kWh # bill and kWh rate
    • 627 kWh / 25 kWh / 100 mi ~= 2,500 mi # EPA 25 kWh / 100 mi
    • 627 kWh / 8.8 kWh ~= 71 charge sessions (+2 per day?)
    The number of charge sessions seems a little high ... not impossible. This is the problem of trying to use a variable, monthly bill as a meter for a specific load.

    I'm going to suggest you might consider an electrical power meter (i.e., kill-a-watt or equivalent) for the outlet used to charge the car. This will provide a more accurate view of the electrical costs isolated from normal variations. If you do, get one that 'holds the metrics' versus one like the kill-a-watt that loses it in a power outage.

    I am using an instrumented, Emotorwerks EVSE that records each charge session. They exist but cost hundreds of dollars. Still, I like to know.

    GOOD LUCK!
    Bob Wilson
     
    #10 bwilson4web, Jan 18, 2017
  11. PriusPrimeOwner

    PriusPrimeOwner New Member

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    Well you buy the meter for me then. I am not your science project.

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    #11 PriusPrimeOwner, Jan 18, 2017
  12. giora

    giora Senior Member

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    The Prime's usable charge is about 6.3 kWh (at the wall) not 8.8, so ~100 charge sessions?
    (EPA: 33.7/133*25=6.33 kWh @ the wall)
     
    #12 giora, Jan 18, 2017
    Last edited: Jan 18, 2017
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  13. kevin54

    kevin54 Member

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    The cost increase seems rather high - you imply that you didn't charge more than once a day, and sometimes not every day? If that's the case I would think your costs for charging the Prime would be about a third of what your increase shows. Does your electric bill kWh USAGE vary widely from month to month for other reasons?
     
    #13 kevin54, Jan 18, 2017
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  14. bwilson4web

    bwilson4web BMW i3 and Model 3

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    No problem as I bought my own Prime and drive it home Friday.

    Bob Wilson
     
    #14 bwilson4web, Jan 18, 2017
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  15. Zythryn

    Zythryn Senior Member

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    I'm guessing the OP is attributing the entire increase to the Prime which does not seem to match up.
    I am guessing colder weather, more days in the billing month, or other factors explain most of the increase.

    At 11 cents/kWh the Prime should only increase his bill $15-$20/month.
     
    #15 Zythryn, Jan 18, 2017
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  16. EV-ish

    EV-ish Active Member

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    Yep. Or perhaps his entire bill was $69 ? Or he paid a lot more than 11 cents a kWh for the car charging.

    Only thing for certain is that an error or mis-attribution is lurking somewhere.
     
    #16 EV-ish, Jan 18, 2017
  17. PriusPrimeOwner

    PriusPrimeOwner New Member

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    Well I am not going to bother sharing on this lame forum. Since people want to pick everything apart like a scientist and there obviously just regular people. What a joke. Of course there are other factors to consider since I did not have a meter running off the one outlet it runs off. People need to stop picking everything apart.

    Posted via the PriusChat mobile app.
     
    #17 PriusPrimeOwner, Jan 18, 2017
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  18. PriusPrimeOwner

    PriusPrimeOwner New Member

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    Oh really. Thanks for the advice. Scientist Giora

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    #18 PriusPrimeOwner, Jan 18, 2017
  19. PriusPrimeOwner

    PriusPrimeOwner New Member

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    Did you know a battery need to have a maintenance charge even just sitting. So it still takes power. That's why they sell trickle chargers. So if a battery is not in use it will loose a charge. So what is the loss of a battery of 8.8 kWh loose per day sitting?

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    #19 PriusPrimeOwner, Jan 18, 2017
  20. Samprocat

    Samprocat Active Member

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    Plugged fully charged...will consume from 0.4-0.7 amps......i will not go so deep how and why.....and this is measured by Fluke meter

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    #20 Samprocat, Jan 18, 2017
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