another update to my energy monitor - for this I installed domoticz and zigbee2mqtt plugin as the MI power adaptor came it a couple days ago, it actually works quite well with the xiaomi Mi and you can control the switches quite easily and and sends all that usage data to domoticz every 10 seconds or so which I can then send to my infuxdb or use the domoticz
but anyways for those who wish to compile their own - energymonitor/homeautomation router - based on openwrt os. here a Howto I created on their forum
also once it is connected to domoticz you can scrap the mqtt zigbee2mqtt topic for info directly if you wish