Yes I plug in on a timer most nights for the 4 hours. If you have used more than 28kw then just set it to keep charging after 04.30 which will be at the normal rate of 13 odd pence.
Yes roughly £1.40 for 85 miles.
New customer credit of £100 just been announced. The deal is available for 8 days only.
Octopus Go is 5pKW 00.30 - 04.30.
4000 miles has cost me £63 in electricity cost.
In the UK the predicted residual value of the Performance Battery Plus version is higher by pretty much the cost of the bigger battery so a no brainer to get the bigger battery.
I do get where you're coming from though but Porsche UK website does show small performance increases in most...
0-60 is the same due to extra weight of bigger battery.
Slight performance difference will be more apparent 0-100, 0-125, 30-70, 50-70 etc.
click on technical specs.