Does anyone know what the average power draw is for a 3kWh (GIV-AC3.0) inverter and a Gen 2 9.5kWh battery?
I’m trying to create some Home Assistant dashboards to work out what’s using power in the house and as I can’t monitor their usage directly I was planning on estimating a steady state for them.
I had it in my head that combined they both pull about 80W, though I’m not sure where that came from originally!
I don’t know what the inverter and battery consumption is, maybe it’s in the product datasheets? 80W sounds about right, I think the newer AIO’s its about 200W, but I don’t know for sure.
Do look at using the Energy dashboard in HA, its perfect for displaying this kind of stuff, in, out, solar, appliance usage, etc
I have a combination of inverter and battery data via givtcp, shelly EM energy monitors for some specific circuits, mylocalbytes smart plugs for appliances and a couple of shelly smart relays. TBH I have never bothered considering the inverter/battery consumption, its part of the overall bucket of energy and conversion losses that occur
This is my calculated inverter losses (5kWh gen 3)
Through charge and discharge it’s higher than just idle
Thanks. The energy flow and individual device usage are essentially what I’m after.
I’ve got about half the usage in the house accounted for using smart plugs (no shelly relays unfortunately) with the total usage coming from GivTCP and PredBat.
I’ve added a steady 80W draw for the battery + inverter, though I realise this will probably fluctuate quite a bit depending on usage. @wrighar what does the average work out to from that graph? By eye it looks to be in the 80W ballpark.
its worth distinguishing between energy draw (power over time, eg kWh) and instantaneous power draw (kW or W)
The HA Energy dashboard uses long term statistics which are captured every hour to graph energy usage/generation over time day/week/month etc.
Separately you might want to produce power graphs of what is happening at that point in time. I use bar graphs to show this, e.g.
