This is a spinoff from the early days on the openenergymonitor forum where there is a thread by this name and some pretty clever adaptations of IoTaWatt hardware and firmware. It’s all open source, so the hackers are going at it. You may feel so inclined, or looking for something more than vanilla in your IoTaWatt. Post it here or look for it in the OEM site. Both great resources. The OEM site also has a wider scope and you can get a lot of information about monitoring many other aspects of energy use, as well as exposure to the Emoncms open source server.
Looking forward to seeing some branches sprout.