Carl, I’m on Octopus Agile (Blame that Brydo fella & the other EV enthusiasts on here, if you decide to make the switch please use one of our codes).
Now, Octopus Go is the tariff for 4 hours of 5p/kWh overnight 00:30 to 04:30 I think, although there are other tariffs that run at different times of the night such as Octopus Go Faster etc.
Using Octopus Go you could set up a timer system on the car to charge at the specific time, or possible at the charger end depending how much control you get with the charger.
The normal rate of Octopus Go will be around 14p/kWh for the rest of the time which is reasonable.
Then there’s the other beta product that they do, Octopus Agile, the price varies continuously depending upon the spot rate for electricity on the open market, the only protection being that it is capped at 35p/kWh which often happens between 4pm & 7pm in the evening when the grid is very dirty. If you can cease using electricity between these times then Octopus Agile may work out for you. Rates very occasionally even dip into the negative for a half hour slot in the middle of the night so you’d be paid to use electricity but don’t count on this happening often, just like my rates dipping to zero tonight, it’s a weekend night & it’s windy, there’s a lot of cheap electricity around from the turbines.
With Octopus Agile you’ll need a very smart charger & a SMETS2 electric meter to record usage in 1/2 hour slots. I use the OHME smart charger which you can get at a discounted rate as an Octopus customer. What this smart charger does is take the amount of charge you need (I have to type that in as it doesn’t currently pick up the Peugeot’s data) and you tell it the maximum price you’re willing to pay, hence mine is set to not pay more than 0.01p/kW hour for tonight… then it will only charge in the half hour slots tonight where the cost is zero, hence a free charge, but I only need 50 miles worth to top it to full.
You can also set the OHME charger to use the greenest electricity if you so wish, so it picks up the data from Octopus as to the 1/2 hour slots when it’s all wind power for instance & uses that.
If you use Octopus Agile during 4pm-7pm you’ll be paying a lot for electricity, this tariff isn’t for people who use lots of electricity at that time, it’s for those who can be more flexible & use electricity when it’s not needed elsewhere.
Also, you can find overnight electricity costing around 12p/kWh when there’s no wind and power in the afternoon can be around that during winter afternoons when there’s not much solar being produced.
There’s no leaving penalty with Octopus so if it doesn’t work for you you can leave for another supplier at any time, or, change your tariff within Octopus (many use Octopus Go in Winter & Octopus Agile in Summer).