House Consumption shows 0 W after adding Huawei SUN2000 to Victron ESS

Perhaps you could search this Community for answers.

I did a bit of googling and found this discussion: https://community.victronenergy.com/t/support-of-sunspec-inverters-via-modbus-rtu-and-extended-sunspec-support/34855/19

Some of those questions should be answered by the manufacturer, distributor or installer.