[twanvl]

I don't expect building a fusion power plant to become cheaper than a gas power plant. Both need steam turbines, cooling pipes, a big building, etc.. So that would be a lower bound on the construction cost.

If solar+batteries can outcompete fossil fuel plants (while ignoring fuel costs), then fusion likely wouldn't be viable commercially. And if you look at [the data](https://en.wikipedia.org/wiki/Cost_of_electricity_by_source#...), we are already close to this point.