Really curious how a smart power grid works is it all connected via wifi or cell service. How it can know what part of the grid is down an how it communicates this info.
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> is it all connected via wifi or cell service
There are a varity of ways things could be connected. How it’s done would depend on things like cost, bandwidth, and reliability requirements.
Modern setups might include a fiber optic cable to carry information. Older or cheaper setups may just use the power lines themselves.
[Communication directly on the power lines](https://en.wikipedia.org/wiki/Power-line_communication) has been around for a while, and is how the “Smart meters” work to communicate usage information back to the provider.
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