I’m using several 6 port PowerNodes from Greenwave, they work fine.
But there are some Compatibility issues, like reporting Watts on the ports. See http://forum.micasaverde.com/index.php/topic,9212.0.html
KWH reporting works fine.
I’m already using the NorthQ Watt Calculator with my NorthQ energy meter, which calculates Watts from KWH.
I created a second NorthQ Watt Calculator (Apps–>NorthQ Watt Calculator–>Create another) en pointed it to a port of the Greenwave Powernode.
After a few Polls it started to reporting Watts. Awesome!
Then created a NorthQ Watt Calculator for every port (17 total in use) of my powernodes and now I have als my devices connected to the powernodes reporting Watts which I can use in DataMine.
This is a workaround until the powernodes are fully supported by the Vera 3.
NorthQ Watt Calculator
http://forum.micasaverde.com/index.php/topic,12350.0.html
Haven’t tested Power Artihmetic.
Power Arithmetic
http://forum.micasaverde.com/index.php/topic,15840.0.html