ELI5: In regions that are "100% powered by renewable energy", what happens to the traditional power plants?

Let me tell you about my Wikipedia knowledge about nuclear waste in the US. So, there is a park I enjoy and it turns out it is an old nuclear plant and was destroyed maybe 15 years ago. They removed the buildings, the reactors, the cooling tower, all of that. But in one area of the park is a fenced area and security guards. That is due to the spent nuclear waste. Why is it still here?

Remember they were tunneling into a mountain in Nevada and that is where all the old US nuclear waste was going to be stored—- forever? Yeah, that’s not gonna happen. The researchers came back with 3 suggested sites to store this stuff. Well, two of the states didn’t want our crap, so they encouraged people to vote for the remaining site- in Nevada. Well, eventually Nevada decided they might like the jobs, but they don’t want our trash, so they fought it. This brings us to 2017 and our “President” has business in Nevada and he pretty much put a stop to discussions permanently. So all these nuclear sites are required to keep their own junk on site. New Mexico may eventually get some of it- they want it. Currently, they are accepting low level radioactive garbage- think things not like fuel rods, but the gloves and suits people wear when handling the stuff.

Pro nuclear or not (I am more or less Pro)- do you really want to be driving through Illinois and see a trailer with nuclear symbols on it passing you on its way to New Mexico? Maybe they do it at night and close the roads, okay. What if they break down? What if they crash into a phone pole? Anyway, if you live in a state with either open or closed nuclear sites- there is waste sitting there- been there for years and years. Cool.

/r/explainlikeimfive Thread