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What are you paying for electricity (price per kWh)?

Discussion in 'Prime Fuel Economy & EV Range' started by Clark_Kent, Aug 16, 2019.

  1. iplug

    iplug Senior Member

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    Very hard to calculate on my end as beyond net zero with solar, but cost opportunities should always be included against what the local utility rates are. This is further complicated that many come up with different cost opportunity numbers, so a lot of fuzziness by that variable alone. If cost opportunity is ignored (should not be), system paid for itself in about 4 years.

    We are currently on PG&E TOU Rate plan E-6. Depending on time of use and tier could "pay" as little as $0.191/kWh or as much as $0.467/kWh. We use as much as we can move into the cheapest TOU window of ~$0.19-0.20/kWh then feed the grid robustly during the most expensive ~$0.38-0.47/kWh windows.

    Our rate plan details:

    Time Of Use.png TOU Rates.png
     
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  2. mr88cet

    mr88cet Senior Member

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    6.5 miles/KWh?! I’m sitting at 4.6.
     
  3. El Dobro

    El Dobro A Member

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    Sparkie. Taking it easy, my best commute was 8.2mi/kWh.
    IMG_20181117_142339803_HDR.jpg
     
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  4. mr88cet

    mr88cet Senior Member

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    Ah. Even with a small EV, that’s still more impressive than I’d have expected!
     
  5. El Dobro

    El Dobro A Member

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    Besides that, the car is a hoot to drive. :D
     
  6. Prius from Dad

    Prius from Dad Senior Member

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    My current charge is $0.146. That is total charges for the month divided by total kWh used. So a full charge for me is about $0.99.
     
  7. Clark_Kent

    Clark_Kent Member

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    I appreciate the information. It's interesting to see the tremendous swings in pricing from state-to-state or provider-to-provider. I signed up for a TOU plan with Georgia Power days after I started this thread with the goal of reducing charging costs (and all other energy use in my home).
     
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  8. Arctic_White

    Arctic_White Member

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    Here in Alberta, our historical average cost (inclusive of all taxes, delivery charges, and other fees) is $0.15/KW. Some months it has been higher and some months lower. This suggests that our marginal rate may be less than $0.15 as the cost goes down the more energy we consume.

    I'm hoping to use up no more than 15kwh/100 kms resulting in an expected cost of $2.25 CAD to drive 100 kms in EV mode.

    Gas is $0.99 per litre. Our Prius Primes are rated at 4.3 Litre per 100 kms. So it would cost $4.25 to drive the same 100 kms in gas mode.

    This is a saving of $2 per 100 kms. Expected driving is 30K kms per year, so $600 savings per year. We plan on keeping the car for 10 years, so savings would be $6K provided that the gas price and electricity cost ratio remain the same.

    Our current daily driver consumes 8 litre per 100 kms, so actual cost savings for us is over $1,700 per year $17K over 10 years (!).

    We are looking forward to the cost savings, and of course to see how the EV mode feels as we move on to a full BEV in the next 10 years.
     
  9. William Redoubt

    William Redoubt Senior Member

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    $0.189. Gas $2.69 gal.
     
  10. Tideland Prius

    Tideland Prius Moderator of the North
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    In the summer it will be below 15kWh/100km (~11) but it’ll be closer to 17-19 in the winter, unless you run the engine instead and blend hybrid mode with a charged battery. That’s possible too. I mean it’s still cheaper to run in electricity as much as possible but the temperature will require the engine to run to provide heat. Not a bad thing since it needs to run occasionally and of course you have to switch fuel blends twice a year.
     
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  11. William Redoubt

    William Redoubt Senior Member

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    I did the calcs for a Prime, thinking I would trade in my 2016 with 98,000 miles on it, and the operating costs just don't pencil out.

    I have a 25-mile one-way commute daily. So I burn about 1 gallon of gas each day. Total cost per day: $2.69. I think I figured I would get 3.75 miles per kwh. So, the 25 mile range of a prime would cost me about $1.26 in power (that's on Tier 1 pricing) at a minimum, but more likely I would be into Tier 2 pricing at $0.24 kwh, which is going to raise my cost for the 25 miles to $1.60. That would mean that petrol would have to be at least $3.20 per gallon to make plug-in charging economical. And I can only assume that as electric cars take hold, the cost of electric power will increase (supply and demand) and the cost of petrol will decrease (supply and demand).

    In the end, the only way I will save cash on commuting would be to car pool. it is cheaper (and more enjoyable) to drive the pure hybrid than riding the bus, van pool (even with employer subsidy) or getting a plugin.
     
  12. jb in NE

    jb in NE Senior Member

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    The fuel distributors change blends with seasons, but this does not compel the vehicle owner to do so.
     
  13. jb in NE

    jb in NE Senior Member

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    That seems quite low for an annual average. How did you arrive at this number?
     
  14. KP7

    KP7 Member

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    I'm at around .24/kWh but have a small solar pv system that offsets about 75% of my annual use. If the production estimates play out over the next 25 years, it should produce at a rate of .10-.12/kWh. So my effective rate is around .15/kWh.

    I also just signed up for community solar for the remaining portion of my bill which will be at a variable rate = utility rate × 85%.
     
  15. Raytheeagle

    Raytheeagle Senior Member

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    I think he just did 25 miles / 6.6 kWh and arrived at 3.75 (that’s what I got when I reversed calculated it);).

    Agree it’s low (much lower than my 5.2 miles / kWh average) but if you’re basing the decision purely on the economics and gas prices, some employers allow free charging (mine does), which helps with that equation. If that’s the case, you’ll not need gas for your commute:).

    Worth investigating if considering a Prime and doing it only on the gas savings(y).
     
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  16. Salamander_King

    Salamander_King Senior Member

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    Yap, at that high rate of electricity you are better off with gas. If you already drive Gen4, switching to PRIME is not going to save you any money even if you can get PRIME at a lower price than regular Prius with rebate and incentives.

    I have learned this long time ago when the gas price hit $4/gal mark back in 2011. Yes carpooling is the best way to commute not only for saving individual fuel cost but also reducing traffic on the road ultimately costing less for the road maintenance. The first share is the biggest saving at 50% reduction. I have been carpooling close to 10 years now. Eve the gas price lower now at $2.50/gal, I have saved at least $3,000 on fuel cost for my commuting.
     
    #36 Salamander_King, Aug 24, 2019
    Last edited: Aug 24, 2019
  17. allenbrown

    allenbrown New Member

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    Currently $0.195/kWh including everything (fees, taxes, surcharges, etc.) With grocery gas points applied....
     
  18. Marine Ray

    Marine Ray Senior Member

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    5 cents/kWh from 10pm-8am using my energy providers time of use program. So, about 30 cents per charge and 1 penny per mile.
     
  19. ziggy29

    ziggy29 Member

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    On my most recent bill, it comes to 12.2 cents per kWh. That includes 1.05 cents for opting into clean renewable power. We don't have any tiered pricing based on time of day, though I usually do charge overnight anyway.
     
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  20. TJD24

    TJD24 Junior Member

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    $0.1029 from Clearview Energy + $0.059147 Delivery from Jersey Central Power & Light = $0.15437 per KWH -- 24/7, no off-peak. Clearview would provide free weekend charging with ChargePoint L2 Home unit (not using as retired so no need for the 2 hour charge time on L2).