If it helps, consider the cost of getting the charger installed as you like it over the savings you gain from much cheaper fuel. If you’ve a smart meter, Octopus Go costs 7p per kWh. Taking into account most cars return 3.5 miles per kWh (more in the summer potentially less in winter) then it costs 2p per mile. If you estimate petrol costs £6 per gallon and you get 40miles from that gallon that’s 15p per mile. If your install costs £700 and you’re saving 13p for every mile you drive, the charger install is paid for in 53,846 miles. Thats, 4years? Less if petrol costs much more than £6 per gallon.
The OG rate offered will vary by region
Thats something to consider as OG may suit some but wont suit all imo
The daily OG rate for my area is 23.71p / kWh which is 2p dearer than my standard BG tariff
Point being your homes family size and mileage pa should first be considered before deciding jumping to opt for an off peak EV Tariff
As a family of 4 and driving only 6000 miles or less pa it dosent pay me to swap just yet