I find between April and October we hardly take any power from the grid for the house and the 6.5kWh solar with the Tesla Powerwall handles everything including the hot water using an iboost.
The ev Mini Cooper is sometimes charged from the grid between April and Oct on cloudy days. The bonus is that having an ev lets us use Octopus Go which is 9p per kWh between 0030 and 0430hrs so any grid use is limited to then.
Our annual electricity bill is around £400.00 including running a car. I estimate payback for the solar/batt system is less than 10years at current rates and I personally believe we are all going to see even higher energy charges in the future so the overall payback period is going to be reducing.
Our heating is split between a gas boiler and an electric storage cooker.
Before interest rates bounced back this looked by far the best investment we could make with a bit of spare cash and now even with the higher interest rates it still feels right.
