With the present volatility of the cost of energy and the number of energy sellers who have got their fingers or worse burned, Its ultimately very difficult to predict how much you will end up being charged for the energy you actually use.
Its of course also complicated by the fact that there is a significant variability in the amount of energy you will need, as that is affected by weather and many other factors. With the pandemic more people stayed at home which probably increased their home heating usage, and people have tended to buy more gadgets becasue they are at home increasing electrical usage.
All this is compounding the situation for many, so yes there will be bigger bills, because you have used more, and that will be additionally compounded by the increases in the cost per unit.