Ive got the mihome (Energinie) hub and whole house monitor. There is a smart app to hook that into smartthings.
Hub will also give you other connected device and swicth capability…
https://www.amazon.co.uk/Energenie-MIHO001-Gateway/dp/B00V52HTXS/ref=sr_1_1?ie=UTF8&qid=1493204239&sr=8-1&keywords=mihome+hub
and here is the monitor
http://www.screwfix.com/p/energenie-mihome-whole-house-energy-monitor/4648H?kpid=4648H&gclid=Cj0KEQjwioHIBRCes6nP56Ti1IsBEiQAxxb5G0qpImGEJRvgotV6KgC0T9PKbyYwzdpTyFGFXHgw6yYaAivQ8P8HAQ&gclsrc=aw.ds&dclid=CNaW0bz7wdMCFSYT0wod1isOZQ
for smart app…