OK so my Octopus Go tariff went live on Monday this week so I scheduled both my car and house battery to charge on the 7.5p KWh during the period 12:30 - 4:30
Tuesday morning my 11.2KWh Battery was on 95% this let me run off grid all day through to bedtime getting slightly offset by my Solar Panels which did not generate a lot due to the grey and rainy day we had however I went to bed with the battery only needing topped up by 5-6KWh about 50p
My car has a 77KWh battery and within 2 nights it is fully charged in the 4hr period using my 7.2KW charger (7.6KWh in real world test). I had put just over 60KWh in the car which equates to £4.50 and now wont need charging for at least 10 days.
My thinking now is maybe drop an oil filled radiator at the bottom of the stairs which ill schedule to come on an hour before bedtime, this along with the small one in my pin room to utilise any spare in my house battery before the top up period starts and turn off at the end of the cheap period 4:30.
I have also asked my plumber to price up a pressurised water tank along side my Combi to heat the water during this period so cheap hot shower in the morning and any excess solar can divert there during the day saving on gas. My house is going to glow during winter and im sure ill look like the weed grower above.
got to say big thanks to
@Calimori for all his advise and the time he took out to chat to me about all this selling those couple of pins back then to fund was the best move ever as I even get to play my pins now FOC so win win.