@Infoseepage @cstross @nyrath It's easy to say that a power plant is a "highly specific resource" after the fact, but Ukraine has thousands of these "highly specific resources" spread across its vast area.
The bottom line is that Ukrainian defenses are successful. Russia continues to fail to produce crippling effects on Ukraine's energy infrastructure. A few limited temporary blackouts here and there is not anywhere close to producing a tangible benefit toward Russia's goals.