I already have Scottish power with smart meter and the ev tariff includes a rate of 4.7p/kWh midnight to 5am. Which is why it sounds tempting. They need half hourly readings to know the power pulled during the off peak 5 hours. Hence the smart meter.
I’m just about to take delivery of a 4HS. Wanted a 5 but when the dealer went to place the order they were told Colt Cars had run out of Pioneer sound systems and won’t be getting anymore. Shame, but it’s save me £4K!