New Powerwall 2 owner here. System was turned on a couple of days ago. Time-based (cost savings) option was set with peak time from 4pm to 9pm as this is what my installer recommended.
During the day yesterday the PW reached 100% charge. When I checked the app yesterday at 4:10pm, it was showing solar production at 4.2kW and house consumption of 0.5kW. However, instead of the house being powered by solar, the PW was being discharged to power the house, and 100% of the solar production was being fed to the grid.
Is this expected behavior? I would have thought that the PW would be left in Standby, and solar would continue to feed the house as it had all day.