Home battery weirdness
Hi All - recently had a solar and home battery install commissioned. For what it's worth its a 50kw battery, topped with a 15kw inverter, 3-phase. It's working pretty well but with one frustrating issue - We're finding that the system is splitting the load from the house between the battery and the grid when the battery has plenty of spare capacity. This seems to happen regardless of load from the house ... i.e. with the battery topped up to a respectable level, the house can be drawing 2kw or 8kw and the load will be split 1/3 to the grid and 2/3 to the battery. The system software is set to "Self-consumption" so my novice understanding says that all the load should come from the battery (and PV, during the day) until I hit a SOC protection limit. Installer has been silent to date ... has organised a firmware update but no change. Am feeling a bit lost and not sure where to look for clues before calling in a professional (would rather the installer resolve it, obviously). Any suggestions for what to look for or potential causes that might result in this sort of behavior? Thanks.