How can I sum the wattages from several power meters?

[anon47916022]

Use my app:

[No Longer Maintained] Sensor Groups+

This has been picked up by @thebearmay and his thread is here: Whelp...I decided to stop mooching and to take a stab at writing an app. This will hopefully be both a beneficial learning experience for me and a benefit to the community. My intent is to grow this app over time to include more sensors. What is this? A, hopefully, lightweight app that will allow the user to group together sensors. What's special about that? This app will update the created virtual device with aggregate counts …