You can’t replace petrochemicals with sunlight, let alone convert everything that runs on some form of oil product into eg. electric - not nearly enough rare earths in existence, and hydrogen is not the solution either for the majority for a variety of reasons (starting from ridiculously low energy density to being absolute ass to store)
I’m not sure Russia has been capable of producing any other kind of generations except “screwed” for quite some time now. Probably centuries.