Fusion will never make energy "free". Currently fuel only takes up about a third of the cost of electricity, the remaining two thirds spread between the cost of

Fusion will never make energy "free". Currently fuel only takes up about a third of the cost of electricity, the remaining two thirds spread between the cost of maintaining a grid, and running/building a power station. So best case you will save about 30% on your bill. A fusion power station is probably going to be more expensive however, so you will be more likely to save less than 30% on bills.