The car will take about 6kw in an hour. my usually summer usage at that time is near zero but the cheapo tariff I'm on is only 9.3/8.16 for the two half hours involved.
And we have one load of washing to do. And I'll stick the immersion on, though that's not much of an earner when the sun is good (spare solar goes there). However I might make the bag of crisps!!
So maybe I'll save 6kWh
The other way of looking at it is it gives me a fairly free day as most days I only use 6 - 9 kWh tops at the moment (except when charging the car).
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