Shelly 3EM 3-phases Energy sensor - Configuration - Home Assistant

Try to reset your counters for energy and energy returned. Most likely is the energy that was counted before you fixed the wiring on the shelly (when you had readings of negative power the returned energy counter increased). Don’t know which loads you have but seems unlikely that you returned > 100 kWh in a day.

Shelly 3EM 3-phase Net Metering templates for Import, export and consumption - #35 by Stiffler0210 - Configuration - Home Assistant Community

Shelly 3EM 3-phases Energy sensor - Configuration - Home Assistant Community

Bi-directional,500A,Home Assistant,node red,openhab, smart energy meter, solar monitor,3 phase,split phase,energy meter WiFi

Shelly 3EM 3-phases Energy sensor - #77 by markpurcell - Configuration - Home Assistant Community

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Shelly 3EM, a photovoltaic system and HomeAssistant: Measuring electricity consumption correctly on a net basis

Shelly 3EM 3-phase Net Metering templates for Import, export and consumption - Configuration - Home Assistant Community

Shelly 3EM 3-phases Energy sensor - #139 by Nerdbenn - Configuration - Home Assistant Community

Shelly Pro 3EM as Grid Meter with Venus OS 3.0 and dbus-shelly - Victron Community

Shelly 3EM SmartMeter with VenusOS / Cerbo GX - Victron Community