
What Fusion Does to the Climate Scenarios (and When)
We use the SSPs constantly in my classes, and the energy story is almost always wind and solar. Fission comes up as a share that keeps shrinking, and fusion never comes up at all. That matches the data: nuclear supplied 9% of global electricity in 2024, the lowest share in more than 45 years even with output at a record, while solar was the largest source of new electricity for the third year running (Ember). ...