Best answer by Transparent
The £160 also has to cover the months when the £85 was inadequate to cover your usage. So, for example, if you've been a customer for 6 months, then half the increase is due to ongoing future usage, and the other half is to cover the deficit of the earlier period of the contract.
That puts the real electricity bill at more like £120 /month.
That still sounds high for a 2-up/2-down house. But I don't know if you're using electricity for
- central heating
- domestic hot water
- an electric vehicle (!?)
There is still the outside chance that your meter readings are erroneous, but only you can tell that by comparing with your previous supplier.
If the readings are correct, then the electricity's going somewhere!
In my experience, I've lowered my energy usage more by installing insulation and sensible controls than I have by incorporating renewable energy sources.