For those who want to IoT-ify their washing machine, I've had great success with a power meter like a TP-Link HS110.
It's connected to a power strip with a switch so that it can be turned off when not in use (which BTW would also be a solution for the owner of the LG machine).
Due to the ability to read it out with Python it sends me an Email when the washing is done and I can also track the power consumption in Grafana. It also shows a "finished X minutes ago" message on some HA-like always-on tablet dashboard.
It's connected to a power strip with a switch so that it can be turned off when not in use (which BTW would also be a solution for the owner of the LG machine).
Due to the ability to read it out with Python it sends me an Email when the washing is done and I can also track the power consumption in Grafana. It also shows a "finished X minutes ago" message on some HA-like always-on tablet dashboard.