This might be relevant at one point. Nuclear power plants.
Ukraine has four (plus one):
- Zaporozhya (occupied by Russia now)
- South Ukraine close to Moldova
- Khmelnitsky in Western Ukraine
- Rivne also in Western Ukraine closer to Polan
+1 Chernobyl.
The largest by far is Zaporozhia, probably larger than the rest combined.

Russia has Kursk NPP relatively close to Ukraine. It's a large power plant, with 3 working reactors (2-4). They built a 5th, but stopped before finishing. There is a plan for a Kursk II, but I dunno how that stands.

In one of the latest WillyOAM video, he cites Ukrainian source that suggest they might be capable of gaining ground in Russia proper, and use the gains as a bargaining chip to get clay back. He expressed his doubts stating the Western weapons came with restrictions, they mustn't be used in Russia proper.
Could Ukros mean, they perhaps has a plan to capture Kursk, with the nearby NPP (it's at a village west from the city) and use that as a leverage?
Also NPPs could come up in different topics related to the war.