After keeping my Hoymiles inverter and the Home Assistant integration turned off for about a week, I turned it back on. Shortly after reconnecting (between 9:00 AM and 10:00 AM on April 28th), the integration caused a massive negative spike in the Home Assistant Energy Dashboard.
The entity Hoymiles Gateway solarH_1953200_today_eq_Wh reported a negative production of -831.86 kWh in a single hour block.
Looking at the history graph for this entity (attached), the sensor itself seemed to track the daily generation correctly right after coming back online, and it reset correctly at midnight. The issue seems to be strictly related to how the statistics/delta were calculated right at the moment of reconnection after a long downtime.
Home Assistant Version: 2026.4.1
HoyMiles Solar Gateway stable Addon Version: 1.4.9
After keeping my Hoymiles inverter and the Home Assistant integration turned off for about a week, I turned it back on. Shortly after reconnecting (between 9:00 AM and 10:00 AM on April 28th), the integration caused a massive negative spike in the Home Assistant Energy Dashboard.
The entity Hoymiles Gateway solarH_1953200_today_eq_Wh reported a negative production of -831.86 kWh in a single hour block.
Looking at the history graph for this entity (attached), the sensor itself seemed to track the daily generation correctly right after coming back online, and it reset correctly at midnight. The issue seems to be strictly related to how the statistics/delta were calculated right at the moment of reconnection after a long downtime.
Home Assistant Version: 2026.4.1
HoyMiles Solar Gateway stable Addon Version: 1.4.9