Inderstood. I have a Gen 1 Aeon HEM running with a special Hubitat Device Driver that was originally written by @mike.maxwell for SmartThings for monitoring a washer and dryer. While I am pretty sure it will not work for your newer HEM (which I believe is Gen5), it may give you some clues on things to change in the ST DTH when porting it over to Hubitat.
Here is my thread which has a link to my Github Repository. Again, this Driver is not for your device, but it may help with what changes are necessary.
Also, there is a WiKi thread describing some of the changes necessary when porting drivers and apps from ST to Hubitat. You've probably already seen it, but I thought it couldn't hurt to link it here just in case. Since it is a Wiki, please feel free to add to the first post with any additional findings you come across.
Finally, if all else fails, you should reach out to @mike.maxwell as he writes and maintains most of the Hubitat Drivers. He would know for sure which model of the 'Aeon Home Energy Meter' the built-in driver is designed to work with.
