How much does your EV costs to charge?

How much does your EV costs to charge?

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martynr

Original Poster:

1,111 posts

175 months

Tuesday 21st December 2021
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Jonny_ said:
Being an engineer by trade and something of a nerd by character, not to mention possessed of the tight-fisted nature inherent to all Yorkshiremen, I do keep quite a close eye on the running costs for my E-Niro...

I'm managing to do the vast majority of my car charging during the 4 hour off-peak window on Octopus Go - 5p/kWh off peak and 13.3p peak rate (for now...). My average efficiency thus far, over about 11000 miles, works out to around 3.9 mi/kWh including charging losses. A 4 hour charge typically consumes 28.6kWh, so that amounts to £1.43 worth of electrical energy to travel 106 miles, giving an average cost of 1.36p/mile. This probably covers 95% of my usage; very rarely do I need to charge outside of the off peak window.

On one occasion a decent motorway round trip came (a little uncomfortably) close to fully discharging the battery. It took 66.3kWh to fully recharge ready for much the same trip the following day (again this is measured at the charging point, so that figure includes charging losses, the actual usable battery capacity is quoted as 64kWh), which necessitated 37.7kWh of peak rate charging on top of the 28.6kWh on the cheap rate. Total cost £6.44 for the 246-mile journey, so 2.6p/mile overall.

Note that I am positively dreading the end of this Octopus contract at the end of March! The 5p off peak rate stays the same but peak rate for anyone signing up now is an eye-watering 23.4p/kWh eek
Well, you'll have to drive less or find a local Tesco and read a book while being charged biggrin
I remember watching a Ukrainian guy on YT who has a Tesla garage. He went to the seaside in his TS driving there for hours otherwise he would not make it. His cruising speed was around 70kmh-80kmh(45-50mph). I think it took him 8hours to reach the destination. When he got there he kept it charging as he would not make it back as no charging was available en route and only charging from a socket. That is torture imho.

Thank you for input, folks. It is much appreciated.