i am actually planning to install a SMA Sunny Tripower Smart Energy solar inverter.
As i already own a smart meter from our local electricity provider and get the relevant data via mqtt into home assistant. I wondered if it is possible to run it without installing a Sunny Home Manager 2.0 or SMA Energy Meter. Additionally i would like to install a SMA Home Storage battery - SMA Home Storage battery | SMA Solar
My plan is to do all the automation in Home Assistant, like loading the battery. Loading my EV (honda e), unloading the battery in the night etc.
Has anyone an idea if this is possible without installing a Sunny Home Manager 2.0 or SMA Energy Meter?
I’m pretty sure that’s not possible, as the inverter actually communicates with the SHM or energy meter to know what the inverter should do, charge/discharge battery based on grid consumption or production
It ist possible using modbus. As Home Assistant works on 1 second time slots the charge and discharge regulation produces more overshoots than the 200ms SMA control. Results in somewhat higher regulation “losses”, aka discharge to the grid. Otherweise works fine for half a year now.
True but as written in my i inital post, i am already owning a smart meter from our local electricity provider, where i am able to read out all the relevant data.