For those who want realtime data collection on their Kasa power/energy sensing plugs (HS110, HS300, KP115), you can try the Java-based utilities Duane cooked up here - CollectKasa.jar. You just need to make sure the computer running the utility is on the same subnet as your Kasa devices. Get use instructions by running the .jar:
> java -jar CollectKasa.jar
Duane also includes a sample control file, Kasa.inp, that samples every second and averages across 5 samples. I use to monitor a couple of my suspect devices, like my Washer HS110.
