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A comment on Why Does the U.S. Have Three Electrical Grids?.

Re:Why Does the U.S. Have Three Electrical Grids? by rob74 on Wednesday October 21, 2020 @05:12AM (#24846064)
Always interesting to learn such details about infrastructure "hidden in plain sight". One more I can add is the separate traction power network in Germany, Austria in Switzerland, which is necessary because the railways here use a frequency of 16,7 Hz. It is fed in part by dedicated power plants (or dedicated generators in shared power plants), in part by converters.

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

https://de.wikipedia.org/wiki/Bahnstromnetz#/media/Datei:Bah...

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Re:Why Does the U.S. Have Three Electrical Grids? by ssda2211 on Wednesday October 21, 2020 @08:40AM (#24847193)
There is a wonderful YouTube channel called practical engineering. You might like that. It's primarily about hidden in plain plain infrastructure and the engineering behind it.
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