Ideas & help in a voltronic project

Hello everyone, so I have decided to take on a challenging project to build an external power management system that can communicate with Voltronic inverters and manage external load, load shedding, schedules, etc...I appreciate your ideas, input. 

Problem/Scenario:

- In my country we have 2 sources of grid power, let's call them G1 and G2 (G1 = goverment Grid, G2 = Neighbourhood Common generator), both have load shedding schedules covering about 16 hours of the 24hr day. 

- Most installs never utilize their PV production potential

- Charging batteries on G2 is more expensive than G1, so charging needs to be prioritized, based on availability, time of day and battery charge status. 

- As far as load, besides general household loads, I would like to dedicate 2 loads to a special handling system, that uses excess PV power throughout the day and divert it to those 2 loads in priority (P1 = Water heater, P2 = Home heating). 

- PV System priorities would be to power current loads, charge batteries, use excess to power G1 until a certain temp is reached with the excess PV power, then taper that and introduce G2. 

Since I want this setup to be a universal solution to replicate with different models and later custom produce it for commercial use, it's best to assume the we will be talking to the inverter via it's communication port, and not tapping into any hardware modifications.  I am thinking about creating a board with different microprocessors for the different tasks at hand and have it communicate with the inverter by command parameters then processing those parameters to  various elements based on feedback received back to the inverter. 

Any implementation ideas?

What would be a practical solution to always get the maximum PV output from inverter, externally? and this has to have a feedback to taper off and re-prioritize based on PV irradiance fluctuations (clouds, weather inclements and time of day). 

Edited March 9, 20233 yr by mafiose13