My electric cost if I take my total electric bill and divide by my usage is .18 per kwh. Using my info below what is my cost per kwh? The info below is my total for the mileage of 2245. I did not reset meter. In that number 765.5 is gas miles and 1,479.5 is electric miles. My gas mpg was mostly on highway traveling 60 to 70 miles. My electric miles were mostly local with probably 10% highway. The gas Mpg I calculated for the 1st 10 gallons was 40 and for the next 8.5 gallon fill up was 43. I am not sure why I did better on the 2nd calculation, it was the same route, same traffic, and same kind of gas. Hopefully this is the normal mpg, but both were good considering on highways near Boston. I was using AC for all highway miles, but not for all electric. Actually it was probably warmer during 1st 10 gallons, so the AC was probably working harder.
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Calculating cost per kwh
Robin2
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yup my system has a 20 year warranty . had it for 10 years will pay for itself in 2-3 years from now . thats @ 11-12 cents a kwh living up north . some folks do have some misconceptions . they think that in 20-25 years when the panels are at 80% of original production they blow up or something and destroy all the other infrastructure with it or something like that requiring a whole new system .
fact of the matter a 20% smaller system isnt that bad if its free. even if you wanted to switch out the panels they are only a small part of the cost and if you are able to get on a roof use a ratchet and have the ability to unplug and plug in connectors you can do it yourself for cheep .
another strange thing everyone seems to only consider payback time they never seem to wonder how long to double or triple the investment .
sure its not doing what stocks do but the risk is a lot smaller and you are doing at least some good .
all else being equal if i lived farther south i think id be doing better .
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So, I have more information on this.
Yesterday, I drove about 45-49 miles on a full charge and then went into HV mode. I plugged into a Chargepoint terminal and got 15.082 kWh supplied. At home, my cost per kWh is 23.119 cents. So, a full charge at full electric rates would be $3.486. If I take a low end of 45 miles, the cost would be 7.7 cents per mile when in EV mode.
For comparison, It is also getting about 42 MPG on gas. If we take $4.50 for a gallon, that is 10.7 per mile in hybrid mode.
That means I get a 28% savings in EV mode over hybrid mode.
I live in a semi-rural area. So most miles are on two-lane hilly roads. Very little mileage on the interstate.
Yesterday, I drove about 45-49 miles on a full charge and then went into HV mode. I plugged into a Chargepoint terminal and got 15.082 kWh supplied. At home, my cost per kWh is 23.119 cents. So, a full charge at full electric rates would be $3.486. If I take a low end of 45 miles, the cost would be 7.7 cents per mile when in EV mode.
For comparison, It is also getting about 42 MPG on gas. If we take $4.50 for a gallon, that is 10.7 per mile in hybrid mode.
That means I get a 28% savings in EV mode over hybrid mode.
I live in a semi-rural area. So most miles are on two-lane hilly roads. Very little mileage on the interstate.
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My charging rates are quite a bit different 6.6kwh that is almost 1/2 your calculations.
You are confusing the vehicle charging rate (how fast the traction battery can be charged from the EVSE)with calculating cost per KWh . Or at least that is what I am guessing you mean. The post you reference stated the owner was getting 3.9 miles/KWh, a measure of how far he could travel on one K/Wh of energy. Not how fast he could charge the battery, regardless of cost.
As numerous forum posts have documented, electricity costs vary tremendously across the US and abroad. Some owners evidently live in areas where using municipal electricity might not save much over using the prime as a pure hybrid. However, setting aside cost/mile, EV operation using electricity not derived from a coal fired power plant is generally better for the environment than using the ICE. And it’s quieter.
It's pretty simple. ~15kw times your cost/kw, mine is .11 cents is $1.65 to fully charge. My .11 cents/kw is all in, since I am on a TOU/Demand rate, I actually cost .07/kw to charge, hence $1.05. That does not equal the cost of a gallon here which is currently $3.45/gal. Cost per KWH is really a meaningless number.
2022 Rav4 Prime SE, 2016 Leaf with upgraded 40kwh battery, 2014 Prius, 1965 F100 Inline 6
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Try this on for cost per Kwh. My solar panels over produce several months a year and in Missouri, our grid tie rules say that if I over produce, they pay me $0.019 -- 1.9 cents per Kwh, which is the "wholesale rate". Part of the reason I bought my electric vehicles was to boost my need for electricity!
Sometimes I get 15 kwh for my Prime for 28.5 cents!
Before any of you armchair economists remind me, I already know. I am NOT amortizing the cost of the solar panels in this little example. Doing that would throw the calculations off quite a bit!!!
But those panels are "sunk costs" so I think by some accounting methods I am still hoyle...I was with you up until that last sentence. For most of us, it’s a a meaningful number. Where I live, as a KWh runs about $0.12, it translates to <4 cents a mile, running at my “drive normally” 3.1 miles/KWh. That’s a real deal compared with feeding the ICE, and better for air quality, too.
Frankly, given the absurd (to me) price of new vehicles, I doubt I will ever financially justify buying the Prime (or any new efficient vehicle) based on ultimately “saving” anything, but I am enjoying it, anyway. Just won’t live that long.
Here in northwest Oregon we pay 11 cents per KWH, (that is all costs included / i.e. sur charges/taxes/ delivery fees etc.)
calculated by total bill, divided by KWH's.
When I was on the Volt forum some would calculate KWH"s prices by just the price stated for the KWH's on their bill which did not include all the other fees associated with the total bill.
Pacific Power is our electric supplier and the more electricity you use the higher the price per KWH. Just the opposite on
the way the rest of the world operates. Usually if you purchase more of an item you get a lower price.
calculated by total bill, divided by KWH's.
When I was on the Volt forum some would calculate KWH"s prices by just the price stated for the KWH's on their bill which did not include all the other fees associated with the total bill.
Pacific Power is our electric supplier and the more electricity you use the higher the price per KWH. Just the opposite on
the way the rest of the world operates. Usually if you purchase more of an item you get a lower price.
2022 Rav4 Prime SE, 2016 Leaf with upgraded 40kwh battery, 2014 Prius, 1965 F100 Inline 6
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Strictly speaking, your kwh cost is usually NOT just the total bill divided by the hours. Most places have a fixed meter fee. Evergy here in Missouri is like $14.70. You pay this regardless. Its not really something you can choose and it does not vary. Use zero kwh its still there.
For the most accurate kwh cost, subtract the fixed meter fee out. But yes, if there are other fees that are calculated based on the number of hours you use, then those need to remain in the calculation.
FWIW, my statement of $/kwh included all fees. I do anticipate it going up some soon based on natural gas costs, which generates most of our municipal power.
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I live in Ca. gas is $4.59 a gal. elect with TOU is .24 KW charging at home. my electric cost to charge my 2023 Rav4 was $2.3184 @ 9.66 KW and i got 46 miles of electric until it switched. i am getting about 40-43 mpg (In traffic) average on gas. my math tells me my cost to drive per mile is .05 per mile and gas is costing me .10- .11 a mile. So the answer for CA is electric is 1/2 the price of gas.
BTW the 2023 has more trip information, and an a phone app that tells you how much elect you are putting into your batteries. mine has been telling me that when i am at 0 miles useable and charge that Toyota has 30-33% left in the charge, and when am at 100% it only takes 9.66kw from the 30% to 100%. doing that math it tells me the Rav4 only uses 53.37% of the stated 18.1kw for the 40-50miles i have obtained in elect. only. That result explains (2) things: 1. you do not need to do like the full electric cars and drive between 20-80% for best battery life (Because Toyota does it for you, and... 2. The reason why Toyota gives a 150,000 mile 120month warrantee on the rav4 Battery is because you are only using 53.37% when new, and when the batteries degrade they will allow a higher % of use to still provide the stated 42 mile range. you will just be filling the battery more KWs as it gets older.
The actual electricity used is about 50% higher than the app indicates. My app shows 9.66 kWh but my EVSE shows 14.6 kWh. The EVSE is measured use while the app uses a calculated value based on battery percentage, which has an error in the assumptions that were used to make the calculation. At $4.59 per gallon, you are still saving money with electric though.
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Here in MA gas is $3.14/gal (filled up this morning) and electricity is $0.32/kWh (wher I live). Average cost of electricity in CA is $0.30/kWh and gas is $4.41/gal according to internet, you are somewhat lucky if you get $0.24/kWh
So for me in MA it would cost to drive Rav4 prime:
on electricity: 36 kWh/100mi = $11.52/100mi
on gas: 38mpg = 2.63 gallons / 100mi = $8.23/100mi (x1.4 times cheaper)
In CA using the "average" data it is x1.07 cheaper to run it on electricity. All because CA taxes gasoline so heavily. Even if I use the non-typical prices you quote then it is becomes 1.4x cheaper - nowhere close to 2x cheaper.
The mpg data is taken from fueleconomy.gov
So for me in MA it would cost to drive Rav4 prime:
on electricity: 36 kWh/100mi = $11.52/100mi
on gas: 38mpg = 2.63 gallons / 100mi = $8.23/100mi (x1.4 times cheaper)
In CA using the "average" data it is x1.07 cheaper to run it on electricity. All because CA taxes gasoline so heavily. Even if I use the non-typical prices you quote then it is becomes 1.4x cheaper - nowhere close to 2x cheaper.
The mpg data is taken from fueleconomy.gov
am I reading this post right that you are only getting 100mi/36kWh = 2.7 miles/kwh? is that highway? I've only had my prime a couple of days but my average is currently at 3.2 miles/kwh and I've been just driving without too much thought to being really eco friendly.
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is that from the guessometer or from knowing what you put into the car? I think the guessometer is accurate, but only in that it tells you what is coming out of the battery. It does not account for the losses incurred in charging.
it certainly is. are you measuring at your wall outlet or something?
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