How about [1] "Power-line Networking". It's basically the act of using A/C power-lines for a computer network. They work okay in home networks, but due to the

How about [1] "Power-line Networking". It's basically the act of using A/C power-lines for a computer network. They work okay in home networks, but due to the noise of the active A/C power-line they don't scale that far. Perhaps they could work in long distances at low bit-rates with high redundancy error-correction to account for the noise. Sending email and text messages... [1] https://en.wikipedia.org/wiki/Power-line_communication https://en.wikipedia.org/wiki/Power-line_communication