There is actually a pretty strong case to made to say nuclear is renewable [1]. Basically, there's enough uranium dissolved in seawater that is replenished through runoff and plate tectonics faster than we could ever burn it as a civilization for billions of years. Methods for extracting it economically are very close. See this entire journal issue about the technology [2].

[1] https://en.wikipedia.org/wiki/Nuclear_power_proposed_as_rene...

[2] http://pubs.acs.org/toc/iecred/55/15