Electric Cars? What Are kWh/kW & How Do I Figure Out Charge Cost!?
ฝัง
- เผยแพร่เมื่อ 12 มิ.ย. 2024
- After a flurry of messages from people asking this very question, I thought I'd answer them. What are kW/kWh and how do you figure out how much it'll cost you to charge an electric car?
Tesla Referral: ts.la/andrew31112
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I am watching this video three years after it was uploaded, but I must express my gratitude for the clarity with which it explains this complex subject. I spent a considerable amount of time searching for a video that could elucidate the topic so effectively. Thank you for creating such an informative and well-structured video.
Shit happens. I watched all the way through even though it was basic info. Hope it keeps the algorithm going 👍
Excellent explanations with examples starting from the basic concepts. Most others have not done this topic well. Yours is the best I’ve seen. Thanks.
This is the only TH-camr that explain it well and only person that has posted this topic. Thank you so much for your work and time.
Funny, a quick vid you had to knock up and one of the most useful I've seen. Ta!
OMG I've watched so many videos trying to work this out and you've finally made sense to me. THANK YOU!!!!!
A video like this doesn't do any harm, since it does clarify things, especially to me :)
Love the vids. I wish you well this week, hope it all goes better.
Your humour in these situations cheers me up no end. 😁🥃👍
Cheers fella. As a new owner of a 30kWh Tekna Leaf, I've found this channel incredibly helpful.
Thank you for a clear and simple explanation of EV charging costs. I wish there were more videos like this.
Chin up lad! Sounds like you've had a similar week to me (and a lot of others too i suspect). great vid as always!
Thanks Bob. Useful knowledge to have on file. Have a great day.
Brilliant. I’m new to the EV world. Loving it though. Haven’t used a public charger yet. Your videos are really helpful. 👍
I think this is really a great video, because we don’t all have that knowledge, those that think we are stupid because we don’t, probably don’t have any of our expertise.
I really like your videos, your honesty and Yorkshire grit :)
Excellent video!! Keep up the good work. I enjoy your channel. Cheers!!
I needed this simple break down. Thanks!
Bloody Brilliant can't beat Good Yorkie, thanks a mill for the education of a Soft Southener!!
Thank you...straightforward and easy to understand.
Great video - straight forward and easy to understand.
You managed to get this tired old brain of mine to understand all that. (I had to run it 3 times though) great stuff keep it up.
Just what a newbie needs. Many thanks
Great video under pressure. Keep on keeping on!
Thanks new to ev and this has Really helped and made it simple for me.
Really good informative video.. Thank you 👍
4.06 "with real world examples"
You were doing just fine for my Hyundai Ioniq.
Good explanation, thank you
Good work , mate. Just starting to look into an EV. Very helpful, thanks.
Sooo helpful mate! Thank you 🙏🏽
Very worthwhile video
Its all about formulae every time. Pretty well explained. ⚡️⚡️👍
Watched it all and found it useful.
Probably simple to most but this helped me alot. New car coming in 2021 and itll be my first BEV
One of your best video,esp of late👍
Considering I threw it together in an hours desperation I’m not sure how to take that!
@@ElectricVehicleMan lol👍
No worries,I keep watching.
Not keen on hybrid vids
Very useful thanks
That really helped- thank you!
Thanks for a insightful video. Lots of confusion by many people around charging and it's associated costs. Hopefully you have helped to dispel any confusion people may have had.
To be honest I do all my charging for my 40Kwh Leaf at home on a granny charger and set the timer to begin charging at 11 pm through to 7 am. This is because my off-peak electricity tariff applies to those times (11pm-7am weekdays and ALL day Saturday and Sunday). During those times I am charged at 19 cents per Kilowatt Hour. Outside of those hours I am charged at 33 cents per Kilowatt Hour. So it is really a no brainer and the timer on the Leaf is a Godsend.
I also have 4 Kilowatts of Solar installed on the House but do not use the electricity from them to re-charge the car as the units produced are too valuable (60 cents per Kilowatt Hour) so they get sold onto the Utility Company or used by the house.
Due to the use of the off-peak power I have managed to shed 59% of my household power usage, including charging the car, onto the off-peak tariff thus ensuring good savings on power bills.
Can't recommend enough that people look into the different tariffs that the Power Companies offer these days.
Neil W.
Get's highlighted when one becomes an EV driver how little we know about electricity. Good to see different ways of presenting it. Thanks
Cheers. That was very helpful.
Wait TH-cam’s algorithms cut your money if you don’t upload weekly? That sucks.
Anyway, keep up the good work. Always enjoy your videos and will watch even if you take a week or two off.
Thanks for this, it looks like seaside towns, national trust etc could do their bit to encourage the switch to EV’s by installing domestic type chargers so folk with city range cars could recharge while they spend 4 or more hours recreation and have enough juice to get home! Amazing!
Nice simple explanation, have you ever done a review of home charger suppliers / energy companies? We found this week there's no suitable tariff from any supplier if you have a later BP pulse home charger (the grey smart one) as suppliers are a bit difficult on what smart charger you have with their cheaper tariffs.
Great video! I’ve been trying to wrap my head around kW and kWh for a while and you have the best explanation. I too have a Tesla M3 SR+ Could you please do a follow up video explaining how kWh translates to range? I do know that aerodynamic, weather, terrain, and driving style cause range to vary.
You may or may not know this but to translate wh/mi to miles per kW simply divide 1,000 by the wh/mi figure.
So 250 wh/mi = 1,000/250= 4 miles per kW
The 50 kWh would therefore give a range of 200 miles.(4x50=200)
Thanks for the clarification. Love the channel, sorry you are having a tech issue.
This is why the vloggers all want dual card slots in their cameras...
Thanks for the video, I'll add this to my 'EV Noobs' list. Very useful.
Cheers - simple but interesting
Watched it to the end. Ok enough in a pinch.
Sugestion, Next time you get a memory card crash, talk a bit about energy losses and real world charging. Thats the bit I would like som more information on.
Ta for that, most helpfull
Hi EVM, Sorry to hear about the memory cards. I’m a new subscriber and find your honest reviews and the channel really useful. I have a question about charging. I know most of us have single-phase electricity at home, but if we can get (or already have) 3-phase electricity, is it true that most EV’s (including Tesla Model 3’s) can’t use the full benefits of a home 3-phase charger ? I think model 3 can take 11kW (which is faster than 7kW single-phase) but not 22kW of a 3-phase. I hope this makes sense. Maybe it’s better for future proofing or when we have multiple EV’s in the future. I’m interested in your opinion. Thanks for all your efforts in educating us about EV’s. You’re definitely winning!
thank you
Looking forward to your Polestar review. I got one about 4 weeks ago and would be really interested to see how you do for efficiency out of it. I get no more than 2 miles per kWh on average which is considerably lower than what I was expecting. I only do about 120 miles per week and it's made up of 50 or so very short journeys so I was expecting poor figures but not this bad.
Good effort given the circumstances. I would have wanted to know that stuff before I purchased my ioniq.
Great video thanks. May well be boring but this is exactly why people new to evs buy the wrong ones based on sales speak or misunderstanding. If people understood this and linked the knowledge to lifetime true cost nobody would buy a Polestar for example.
How many times have I replied to the statement “ I can’t afford a Tesla” with “ can you afford not to!”
Well done for providing this information.
Congrats on doing this thrilling video, I'm sure I can speak for most of us that don't understand Kw and what is watt when I say...??? Lost it!
Have a nice day, where's my hammer....
*Watt 😁
Thanks, very well explained even this 70yr old Scotsman understood......toying with the idea of going electric with our 2nd car.
Amazing
A brilliant video for those that don’t know about working out costs for running EVs. If your in the Oakworth area (slippery ford) with E2008 or polestar or Tycan give me a shout for a social distance lockdown drag race against my MG ZS EV with turbo fitted lol
1:21 of pointless blither on the front. Well done for getting the basics right (I've seen people try to explain this and just make people more confused). And even people who do understand are really slapdash about using the right units. It might have been helpful to explain that the units match up: so kW times hours gives result in kWh. Once people understand that it gets easier to check: do the units match the calculation?.
Very useful. Now how about figuing the efficiency of a PHEV aggregating the KwH value of a gallon and adding actual KwH used from the charger?
Well I can agree it has definitely been one of those weeks.....
Looking forward to the Polestar.
This leads to two future videos..
1) comparing costs at different public charging points. It is easy with an ICE to see the price per litre with petrol..how do I shop around with an ev whilst out on the road
2) insurance costs..is there one provider that is coming out best value.
That wouldn't be a long video. 20p per kwh is less than 35p. Find the one with the lowest number 🤣
@@enyaq_gorm sadly not all the same. Some charge for an hour with no mention of amount of charge, different networks have different tarrifs and faster chargers are more expensive. As with motorway services expect to pay more for fuel than at a local supermarket. As far as I can tell the EV route planners do not take that into account.
It's notable that fossil fuel stations display their prices in big numbers, which can be read from down the road, but EV charging points are far less extrovert with their pricing. You have a really salient point there.
Great video understood that
I’m unfortunately new to EVs and hate them lol but it’s a work vehicle so no choice.
Hi there. Brilliant videos. I’m thinking of getting a Skoda enyaq 60 iv car and my energy tariff is 0.32p per kWh. How much would this cost.
Off topic but you fancy reviewing the smart forfour? i need a small city runaround for 30miles a day and im quite intruiged by the little thing.
bless Ur ❤ Bro, U v been gr8 help , & all best of wishes in world , thnx 🙏👌.
How about going through the calculation of Number of 24V Li storage batteries are needed to charge a LEAF which requires 6.6 KWh per day to recharge. And then how many Solar panels are needed to charge these batteries assuming it is sunny every day on a dedicated system of panels just used for the car.
For all those in the UK that are still struggling! Go to smarthomecharge.co.uk it does all the math for you!! Example. Merc C350E (hybrid)5kWh battery on OctopusEnergy economy tariff,costs just £69 a year for 5200 miles !!! Just fill in your car your energy provider and your mileage a week , and it get the latest tariff rates job done!!!
Can’t be easier to see if it worth going electric or hybrid what ever you fancy.
Keep up the fantastic work on TH-cam 😃
Thanks David, glad you found our tool helpful. We deliberately kept it simple and kept the calculations simple to give people a rough idea of costs. Obviously depends how and when people charge in the real world.
Direct link to energy tariff comparison tool is here:
www.smarthomecharge.co.uk/guides/energy-tariffs-how-to-keep-ev-charging-costs-low
Interesting information.
Can you indicate the size in kW of the electric motors in a range of cars from LEAF to Tesla and their battery capacity.
Can you do a tabulation of km per kWh, for electric vehicles, which in the fossil fuel world is fuel consumption as litres per 100km or in a fossilised system is called miles per gallon.
Hi am I understanding correctly. I just ordered a Y. Based off google I think it has a 70 KWH Battery
Home charger is 11.5 KW
(The new home charger 2021/2022)
If its at 50% - Half Charged 35KWH
It would take a little over 3 hours to charge? and closer to 0% charge would be about 6 hours? from 0-100%. I know my Tesla won't go to 0% and that I should only charge to 80% but this is just to make sure I am doing the math right.
Hi
Not sure if you are able to assist but I’m needing to replace a type 2 plug for my charging cable, I unfortunately dropped it and do not seem to be able to find anyone who is able to replace and fit a new one, I paid extra for a extended cable to enable charging at a longer distance.
I did send it back to the suppliers, however they stated they were unable to assist and just sent it back, stating I could purchas a new cable if I wished, knowing that the only problem was the plug that fits into the car.
I’m wishing to get this sorted now as thinking of getting a Polestar 2, especially after seeing your programme, informative and amusing, having a test drive in a couple of weeks.
Keep going, great programmes.
Richard
Screwfix sell new cables.
Good video, Octopus Agile or Go? 1 x 38 kW Hyundai Ioniq, 1 x Vauxhall Ampera
you're the fkn best!
good plug for Octopus, but very informative nonetheless
Just to complicate things further; a 30kwh battery doesn't have 30kwh of usable capacity. But I get it, it's about keeping it simple. FYI, love seeing the white board back in use. Honestly M8, this may end up being really popular as folks might tend to type this sort of thing into search engines
I have a problem with calculating the true cost of power consumption. I have installed a dedicated K.watt hour meter and power factor meter ahead of the charger. We have found that the vehicles onboard computer computes the vehicles consumption from the battery. Not the true input power into the battery. I have found a good 10 - 14 % efficiency losses. Therefore the true cost on an average is 12% more.
Also, I’ve just checked and Ionity (part publicly funded infrastructure across Europe and a JV between various auto makers) are charging 89 cents per kWh as standard, unless you drive a car made by them in which case it costs 29 cents. At today’s currency exchange rates, this makes the charge 86pence per kWh.
Basic but useful anyway. It would be good to add on a conversation about kWh/mile as that makes a difference when comparing models as its not just about the battery. I think Teslas go further than most.
Ok so I am still confused and really could do with help please. I'm thinking of buying a 2013 Leaf with 24 kWh battery. I would need to charge at home overnight using a granny cable plugged in to normal home socket. Someone told me to work out cost you take your electricity cost per kWh x battery size (24 kWh)....my electricity at home per kWh is 0.59 cent (Ireland). If I did 0.59c X 24 it works out that my Fiat Punto 1.2 is actually cheaper to run per KM than the Leaf.
On a related issue, what do you think the standard should be when talking "energy consumption"? Distance per kWh eg 2 miles per kWh or KwH per 100 miles or km eg 5.7kWh per 100km. Sort of like the old MPG has become # of lites per 100km when talking ICE vehicles.
Miles per kwh. Tesla shows wh/m which I always have to convert
Just had my electricity bill for October. 194kWh of nighttime use (Octopus Go), which gave me around 600-700 miles depending on weather/how I drive etc, and cost less than a tenner. How mush dinosaur juice would that buy, and how far would that take me? 100 miles maybe
Hey - one video/analysis I'd like to see would be how much would a EV car cost for someone who *can't* have home charging (ie - no off street parking). Is it viable yet to have an EV and purely depend on public chargers for everything and how much of a hassle and how expensive would that be compared to ICE cars? (maybe have tesla vs non telsa details as well...)
so is that daily charging ? that would convert to in USD as 12dollars a day rounded up from 11.99 or 84 dollars a week
thanks for the info.
I was wondering the future savings for when I get around to buying an EV.
By my rough math (in Canada with Ontario, Canada prices)
to fill the gasoline car I currently drive (Toyota Matrix) from near empty is approximately $40
to "fill" the EV I want (Kia Soul with the 64 kWh battery) will be between $4.16 and $8.58 (depending on Off, Mid, or High Peak rates)
Now all I need to do is more to a apartment/house where I am capable of charging at home, and save enough to buy the EV.
The missing part of your thesis is the distance the $40 takes you in the Matrix, versus the approximately 400 km (summertime) the charge in the Soul will take you.
@@davidbutt406 I did that calculation after posting.
Approx $8/100km matrix
Approx $1-$2 /100km Soul EV (summer)
Thanks for this, as newbie EV owners we found it very informative. We bought it after going to fullycharged live 2019 and watching you and your fellow EV TH-camrs during Lockdown I. We decided to ditch our two cars and get one EV (40kWh Leaf) and we've not looked back since! We wanted to get a Smart Meter so we could benefit from the better EV tarrifs (Octopus Go/Agile etc) but we can't get one as we have a domestic 3-phase supply and our supplier (EDF) and others don't seem to fit them - any ideas?
Ask Greg CEO of octopus on twitter.
@@ElectricVehicleMan Thanks - I will do that
Great explainer, I have another question why do EVs need a 12v battery and why can't be charged by the main battery pack.
It's seems odd when your sitting in your EV with 50% charge and the radio and heating goes off after 20 mins to protect the battery.
I have a e-Corsa which does this. Thanks great channel.
Most EVs do charge the 12v from the battery from the main traction battery. The 20 min thing is just to prevent accidentally leaving it on I'd guess.
Love your stuff. In basic terms is just watt I need (pun intended) to make a decision. Your reviews are mostly why I'm collecting my MG ZS EV tomorrow! Still slightly aprehensive about long trips and using KERS etc. I have a business trip to make in a week or so which is 164 miles, the MG will do 163 apparently. So I'm assuming with KERS, a non motorway trip, I should be able to make it there and back... Also, with the daily charge I worked out the MG ZS EV, to full charge, will cost me £6.96p.
So many thanks!
Note to self: Look for a new electricity provider with an off peak tariff...!!
th-cam.com/video/m8dnEZtLOnw/w-d-xo.html
My question is how much energy would you get out of a 28kwh battery pack?
Hello electric leaf Man
I have just insured my Toyota RAV4 diesel with Toyota insurance .. I asked for a price for a Hyundai Ionic electric .... They do not insure any full electric cars .... They would insure me for a Toyota RAV4 hybrid.
Can you please do a video on car insurance for full electric vehicles ...
Thanks for all the videos you make 🤩
Something important to remember: inversion loss. When using an AC charging point, you'll lose 10-15% of the power as it's converted to DC for the battery, so 7kW for 4 hours may only give you ~24kWh.
Brought up in Manchester. Love to hear that northern accent!
I’m from Yorkshire! Not a Manc!
i thought you might be. But after 40 years in Canada and 10 years in Florida that northern accent is warm and friendly.
I do have one scenario that i wanted to ask. If you arrived at a charger with 20% and you charged up to 80%, could you give me some advice on working out that please, thanks
If 7kW charger to four hours to charger 28kWh. Then how in the case of tesla Model 3 he says that a 7kW charger running for exactly one hour gives 32kWh please explain
It's taken me a long time to fully realise that charging up an electric car could cost as little as £5.00 - which is staggering compared to how much it costs to refuel a petrol or diesel car.
Well, it's an important point to make. And sometimes the obvious things need to be said.
🙄
You'll have covered this before but I'm gonna ask anyway: what's the range of your model 3 before you have to recharge? How far down is the battery at that point? And would you normally charge to 80% or 100% or some other number?
It's widely known that cold weather shortens the range of an EV and it takes as long to charge from 80% to 100% as it does from 0%-80%.
In the middle of January 175 miles would take you down to about 16%
32 minutes later you'd be driving away from the Supercharger with 85% at a cost of £8.51
Don't apologise, many will have found this interesting. You were right to use simple examples to illustrate the principles. Just out of interest I've always wondered what is the typical efficiency of the charger? So for each 1kW from the mains how much goes into the battery?
dont forget that there is resistance loss so 7kw charger requires a bit more than 7kw to charge at 7kw. low resistance batteries will hellp
Hi, 😄😄😄😄 TV star. I'm very happy with your channel. I subscribed today, I ordered an EV because of you, I switched to Octopus Energy and purchased an Ohme EV charger yesterday. But, please do not work as a teacher.... Accountant is better job for you 😄😄😄. Regards, Dan.
Thank you for some great content. I’m considering buying a phev which has a 24 kWh battery but charges in 7 hours. Will the electricity cost be 7 x 24 x tariff, or 7 x 7 x 24 x tariff, as the car maker only allows for slow charging.
Just 7kWh x whatever you pay per kWh.
@@ElectricVehicleMan Many thanks