Porque no los dos?

Why shouldn't fusion not be good for consumer energy? If they find a way to produce electricity with it the grid doesn't care who uses it.

Why don't we use mirrors to heat water with sunlight and spin turbines with it? We do! But photovoltaic cells are more space efficient and have gotten really cheap. Also you can just plop them on almost any roof and call it a day. Also converting light to heat to electricity is kinda dumb when you can just convert it directly to electricity.

We also use the sun to make tap water warm.