[Dave W]

Evening all,

I had made a cost to charge calculator for my Tesla site, but got lots of good feedback about it, I thought I'd extend it out to all UK EV's, including the brilliant Kia range (didn't realise just how good they were until I watched one of the Carwow range test videos!). The energy suppliers are limited to the most 'EV friendly' (did lots of checking and asking people on who they'd recommend), but there is a free form entry section where you can put a custom supplier in, so maybe your current one or just another I haven't included.

Hopefully it's helpful for you, covers the Niro (both battery sizes) and the Soul

UK EV Cost to charge calculator - Witchalls.com

Find out how much it will cost to charge an EV in the UK with this simple calculator. This will show the cheapest prices for EV and home use.

www.witchalls.com

Let me know what you think.

Dave.

 

[Dave W]

Apologies, this wasn’t working when I shared it, had a local caching issue :/

All fixed now

 

[DragonQ]

Interesting but these kinds of comparisons are only vaguely useful. They don't take into account how often the user is actually charging, e.g. Octopus Go would work out insanely cheap for someone doing 3 full charges a week. It would not be when charging once a month (e.g. during lockdown). Also, knowing the "pence per mile" cost for charging the car is interesting but changing tariffs doesn't just affect that value. You should really be comparing the total electricity cost of all of your usage. For example, getting 2p/mile in the car sounds great, but it's bad if at the same time you're paying 50% more for all of your other electricity use.

 

[prawlin]

@DragonQ but in my case, in my area (I recently switched to Octopus Go) even the GO daytime tariff is quite reasonable and is usefully less than I was paying previously. So even if I had not had an EV it would have still been cheaper for me. Also, I see it is fixed for one year so it won’t go up.....
Octopus Go rates

Period	Price (inc. VAT)
00:30 - 04:30	5.00
04:30 - 00:30	13.31

 

[Dave W]

Interesting but these kinds of comparisons are only vaguely useful. They don't take into account how often the user is actually charging, e.g. Octopus Go would work out insanely cheap for someone doing 3 full charges a week. It would not be when charging once a month (e.g. during lockdown). Also, knowing the "pence per mile" cost for charging the car is interesting but changing tariffs doesn't just affect that value. You should really be comparing the total electricity cost of all of your usage. For example, getting 2p/mile in the car sounds great, but it's bad if at the same time you're paying 50% more for all of your other electricity use.

I do put as much in the text on the site, charging costs are a small part of it.

Home usage is included too, so you can see if the cheapest to charge is reasonable for your normal usage (and the combined one). As @prawlin says, Go is fairly cheap in day anyway, if you were to schedule things like your washing machine and dishwasher overnight you can also take advantage of the cheap rate and save money.

 

[DragonQ]

Home usage is included too, so you can see if the cheapest to charge is reasonable for your normal usage (and the combined one).

True but the numbers in the table just don't mean much by themselves. It'd be a much more useful comparison tool if you asked for annual kWh consumption sans EV, annual mileage, and percentage of charging done at home.

 

[Dave W]

True but the numbers in the table just don't mean much by themselves. It'd be a much more useful comparison tool if you asked for annual kWh consumption sans EV, annual mileage, and percentage of charging done at home.

I have given that some thought, but the more complicated it gets, the less it's used (first version in Google Sheets had a lot more info and got comments about being complicated). Worth pointing out that a lot of people without going through some paperwork (me included at the minute thanks to a Bulb knackering my smart meter) don't know their daily / annual usage in kWh.

This should at least show you the differing prices for household use, if you can see per day it would be £1 cheaper for just home usage, you can work get a feel for potential money to be saved, especially if you fill in the current prices you are paying in the custom section.