So I have a SigEnergy with 16kW batteries + SolarEdge. Was looking at “self-consumption” and “self-sufficiency” and had a weird realization. Take the below screenshot.
“self-consumption” is defined as “used by the home, instead of returned to the grid”. Most solar seems to have gone into the battery and the house was powered mostly by Grid (3/4), ~1/4 from battery, and a tiny bit of direct self-consumption.
So clearly storing it for later use, and then “exchanging it with the grid”, doesn’t fall under self-consumption - especially because the system preferred using from the grid when it’s cheap and and returning when it’s expensive.
What I’m seeing is that self-consumption is the yellow part of the “home” ring (16%), where I would at the very least expect it to represent the yellow + green part (battery).
Then self-sufficiency is at 0% - even though 26.4 kWh was pulled from the grid - but at the same time 26.7 was put back into the grid. So I guess because 26.4 was pulled into the home, (blue circle, biggest), the system is determined to be “not at all” self-sufficient, which feels a bit weird to me.
Assuming I’d set the Sigen to prioritize self-consumption, the stored 16kWh + the direct consumption comes quite close to the total house consumption, let’s say we’d be at 80-95% self-sufficiency doing that - while trying to do trading by definition will result in a low self-sufficiency, even if in/out match.
