Gen1 hybrid: full export behaviour

Hi all

I've had a 2021 Gen1 chugging away merrily for over three years now. I rarely if ever have any issues with it so I don't tend to swing by here very often, although I have one observation I'm curious about.

When the system is set to full export mode, I always see a whopping 300W-ish overheard on the power delivery to the house, before the rest is netted off for export.

For example, if the house load is 600W, the inverter will be supplying 900-950W to the house and around 1500W will be exported. This seems way over what you'd expect for regular conversion losses and I wondered what causes this. It doesn't seem to scale very much with house load either, so if the load is closer to 1kW, then then GivTCP will say 1.3kW is being supplied to the house and the remaining 1.1kW exported.

Just curious if this behaviour has been observed with inverters of a similar vintage to mine.

23 model gen 1 does pretty much exactly that. Just not very efficient

My 2022 gen1 is pretty similar. I use the excellent Android monitor app which shows the inverter load separate to the house load and when the inverter is in full swing, it can consume 400W easily.

Yeah I am genuinely curious as to what's behind this as the overhead for supplying house demand from the battery in a non-export scenario is around 5-10% of the load and obviously scales with the load.

Put your hand on it and you will soon find out where the power goes!