New to Energy Monitors - do I want one?

Energy Monitors
#1

Have a 5yo enPhase system with Envoy (consumption and PV monitoring) that I send to PVoutput and 10kWpv. Supply is 3 phase.

Am currently (no pun intended) looking at what power I’m consuning in the middle of the night. enlighten data is suggesting I’m sucking ~2500-2800W/hr.

From messing around with TP-Link energy monitors on my GPO’s, I calculate it should be closer to 380W.

Am considering additional energy monitoring to the circuit level, in the hopes of tracking down the additional energy use, or proving that the enPhase data is plain wrong.

Should I be looking at a standalone monitor to add (suggestions on what to get), or are there options to expand the envoy monitoring? I’m also considering a home battery, and an EV is in my future. I would prefer a standalone monitor with web or app stats with pvOutput access (don’t want to spend time rolling my own with a RPi etc)

#2

form my own experience most of the web/app based units rely on cloud services which add a HUGE delay. They will look pretty and give an idea but if your looking into your data seriously a locally hosted system is in my opinion essential.

I rolled my own based on parts of the OPEN ENERGY MONITOR system which you can buy as a compete unit. Effergy are another unit with a reasonable response time but rather basic in their data presentation.

I have recently had a sungrow system installed with battery and have been extracting data directly from the inverter with a python script as the sungrow App is around 15mis delayed and only gives a snap shot at that point in time. (ie you turn the Jug on and it runs fro 2 minutes, the sungrow app will show the power consumed for up to 15 minutes) I have considered re installig my own system but I would still need to interrogate the inverter to obatain the battery status.