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Ukraine is making its infrastructure harder for Russia to destroy by building clean energy sources
(www.milwaukeeindependent.com)
This is a most excellent place for technology news and articles.
Geran-2 carries about 50 kg which can be a cluster munition up to 2000 km on the cheap. It is very effective when taking out large scale PV modules which are made from thermally prestressed glass.
Renewables can't keep a grid up without fossil backup, which is by now greatly reduced. And 750 kV transformers are also very vulnerable. Ukraine grid is now entirely reliant on electricity import from neighboring countries. These high voltage lines are few.
A Geran-2 is a mass produced 20-30 k$ item and can carry a 50 kg payload up to 2000 km which will destroy PV modules in a 200-300 m diameter with a cluster munitions payload. Such attacks are very cost effective and can be repeated, so rebuilding doesn't help you.