Nuclear Power . Russia knows best

 Well, One must believe Russia that Ukraine is shelling its own power plants. 

Advantage : any direct and destructive hit would kill more Russians eventually .

                  : if the wind is in the correct direction, radioactive fallout could end up in Russia [ bypassing the HIMAR US restrictions on hitting Russia directly. 

                   : Ukraine knows that Russia will keeps it liberated lands, so its best to make them uninhabitable for a few 1000 years. 

    You just have to have faith in the Russian news and a slight scepticism against other nations' media