Chris

Intelligent GO is cheap rate (7.0p per kW/h) every night from 11.30pm until 5.30am. There may also be other unspecified cheap blocks of time at any other time of day but they don’t tell you if or when they might arise. They are controlling my charger via an API to its manufacturer and I no longer have any control over when scheduled charges will occur (but I can push a button to start one manually at any time, at the prevailing rate).

So I can’t say what’s cheapest because I don’t know how cheap agile goes and I don’t know the extent to which Octopus might decide to do a sudden bonus charge at some other time of day.