A major part of WW2 strategy was Allied raids targeting Axis power plants, since electricity was a critical component for military factories (i.e., energy-intensive steelmaking). There was a mini-arms race around hydroelectric dam tactics—defensive nets to entangle bombs, vs. "bouncing bombs" that skipped across the surface of the water, circumventing the nets.

https://en.wikipedia.org/wiki/Operation_Chastise

The dam bombings in Norway, at Telemark, were extra special: that was a critical component of Hitler's semi-serious nuclear weapons program. Vast amounts of electricity were being secretly used to separate deuterium from water, on the understanding that was necessary to produce working nuclear fission reactors for the purpose of creating plutonium. (This was an error; the US correctly figured out that ordinary graphite was sufficient, for this type of nuclear reactor).

https://en.wikipedia.org/wiki/Norwegian_heavy_water_sabotage

(No implied commentary on the OP story).