I have two solutions currently. The old, original one is using an Aeon v1 HEM Z-Wave, using the following driver that I ported over from SmartThings.
That solution actually has the driver issuing Button Pushed events, which RM picks up and sends notifications. I am working on phasing this solution out of my setup.
In parallel, I am using an IoTaWatt device to monitor numerous circuits in my house. It's a great device. To integrate it with Hubitat, I am using the following driver that I wrote, along with the RM rule I posted above (one rule for the dryer, and another for the washer.)
