It's crazy to think through the ramifications of fusion power. A Sahara irrigated with desalinated water. Mining trash to get the metals out. Sequestering CO2. Turning the entire globe into a climate-controlled mall.
The day/night cycle isn't a problem for desalination because fresh water is easy to store, and the places that most need water tend not to be cloudy.
I think the killer app for fusion is large vehicles: cargo ships, spacecraft, helicopter islands, etc.
Awesome utopia.