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-phases Energy sensor - Configuration - Home Assistant Community

Problem with new Energy dashboard (Home Assistant 2021.8) - Configuration - Home Assistant Community

Shelly EM Wi-Fi Energy Meter - SmartHome

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

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

Shelly 3EM

Shelly EM3 and Home Assistant

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

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

Self-consumed solar energy, calculating per phase, but needs balanced - Configuration - Home Assistant Community