The spot price for electricity varies wildly through the day, depending on the amount produced and demand, production depends on the weather. All of which together mean that Octopus can offer at 7.5p/kwh through the night and at times, during the day.
I wonder how long it will be before roadside chargers will reflect this variation.
Filled up the ICE this week, for the first time ever the self service pump cut out at £99.00 before the tank was full. Petrol may be expensive, but at least the price per litre is a relatively known quantity.