As in the other thread. Just take great care with split tariffs because a small battery PHEV usually can't take enough 'cheap overnight ' energy to overcome the increase in 'higher priced day' energy. A large battery BEV used by someone driving a large daily mileage can benefit, as they draw a large number of overnight cheap units and can see savings. Many also put timers on white goods to run overnight. But a PHEV, even with an empty battery at the start of every overnight cheap session, usually just causes the day use to be more expensive, without the night savings even making a dent in that.
Octopus may still supply and fit a wallbox of course. And install the smart meter, which is required for any split tariff systems. As others have said, all of this would be fairly essential for a BEV that drives 12,000 electric miles pa. But a PHEV driving 2000 electric miles pa is a different thing. And often the expense of setting it up as if for a BEV would instead pay for electricity for it from a standard 13 amp plug on a standard tariff for the next twenty years.
