I think the rule of thumb is between about 3 - 4 miles per kWh. Some will consistently hit better figures but often, to me, seem obsessive about their "mpg", though if you are public charging at the rates you mention I suppose I'd be more careful. It is quite variable depending on outside temp, driving style, usage of accessories - but then I think maybe IC cars are but people are less obsessive about what it costs to put the lights on :-)
In the 70p's is about the mark for most public chargers these days AFAIK (I don't use them much myself). I paid 79p in a hotel in Chester a week or so back, which I felt was a bit extortionate as they were only slow chargers. One of the companies put theirs up to 90 something but they have dropped again now. Sometimes in towns you can find public chargers in the 35 - 50 p bracket.
I am currently on an Octopus tariff which gives me 4 hours per night at 7.5p, so a "tankful" (approx 60 kw, say a bit over 200 miles) costs me about £4.50, though my non cheap rate is a bit more expensive than most regular tariffs. The 4 hrs is about enough for me to do 45% charge. Given I don't do that many miles I only charge when it gets ot about 60%, unless I know I need it.
My average whole-house electricity cost over the last month was about 12p a unit for all my electricity, but I did travel a fair bit so lots of cheaper charging. It's usually more like 18p. I obviously do some load shifting into the overnight period (dishwasher, washing machine and tumble dryer primarily).
My tariff comes to an end on a week or so and I'm looking at either Intelligent Octopus (retaining the 7.5p overnight, but for 6 hours, and with a more expensive day rate - which is mitigated at this time of year by my solar panels) - ) or the Tracker tariff which today is about 19 a unit. I'm tempted to have a punt on the tracker as I think prices will carry on falling for a bit yet. If it goes horribly wrong I can come off with 2 weeks notice, but I can't get back on it for 9 months if I do that.
I've been on Gast tracker since jan - I came off a tariff which was 10.8p and tracker has been as low as 3.5p but is currently around 4.4p, although I am now hardly using any. (Hot water mostly satisfied by diverting excess solar to immersion heater).
Youi did ask... :-)
Last edited by: smokie on Mon 19 Jun 23 at 13:35
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