I bought a EmonPi back in 2017 with one CT clamp and used it to monitor household usage. When we moved I never reconnected it (cables by the meter were a pain to get to and no power for the EmonPi), so it’s been gathering dust ever since. I’ve now had Solar PV (Solis) and battery (Pylontech) installed and wanted to get the EMonPi running again as the available stats are poor in the Solis portal.
I was wondering what I need to get, I assume another CT clamp for the current EmonPi and connect as per the type 2 example in the SolarPV docs and connect these by the meter.
The inverter and battery are a long way from the meter so what should I do about battery monitoring and is there any addition monitoring I can do at the inverter end? Looking at the portal at the moment what I am missing is when is the battery charging/discharging I’m assuming there is nothing I can do see the charge % of the battery except on the portal. The other thing is I have panels on 2 aspects and would be interested in seeing the power generation of each but as this is DC I assume this isn’t possible. The portal is showing 227V at 6.6A on one array and 139V 0.7A on the other and that is interesting to see that balance and if the second array was worth installing.
So what hardware/software do I need to achieve this? I’ve upgraded the old EmonPi, I assume the HW is good enough even being 3 year old?