Life spans of reactors can cause instability. Nuclear requires unstable mines for unstable materials which are unstably finite. Controlled by unstable governments and where by a nuclear explosion causes a very unstable aftermath. I see nothing stable about nuclear.
Unless, you mean renewable being "unstable" in the sense of no wind, no sun equates to no power. Then yes, but only until the fuel is spent.
However, renewables are stable when resources are available, stable in providing consistent clean fuel and stable in cost on upkeep than say one of a nuclear reactor.
Which is why you combine all three.
> Show me any place, anywhere, which is using renewable for baseline energy production 24x7.
El Hierro, the smallest of the Canary Islands, holds a unique distinction as the only island to operate solely on wind and waterpower for 28 consecutive days.
The facility ingeniously combines wind generation with pumped storage hydroelectric generation. Now that's cool.
https://www.renewableinstitute.org/el-hierro-a-renewable-ene...
