But how can you call solar power 'renewable'? It's powered by fusion reactions in the sun, which are finite; it's going to run out. Only partly tongue-in-cheek

But how can you call solar power 'renewable'? It's powered by fusion reactions in the sun, which are finite; it's going to run out. Only partly tongue-in-cheek. Fission power will also last hundreds of millions of years, so although it is "non-renewable", it shouldn't carry the same connotations of "will therefore run out".