Here's the route I went:
https://www.amazon.com/Elgato-Energy-HomeKit-Technology-Bluetooth/dp/B01M3PK5WH/ref=sr_1_fkmr1_1?ie=UTF8&qid=1489902199&sr=8-1-fkmr1&keywords=eve+energy+220v

So on my iPhone I can see how much each rig is using, how much in $ it has cost since the last time it was reset, can remotely turn them on and off, etc.

I can do all of this from anywhere in the world.

Supports 240v.