Self-Consumption

The Self-Consumption mode maximizes the utilization of PV output and battery energy to power the loads, thus minimizing grid energy consumption. Users can configure specific time periods for Allow Discharging and Force Charging based on electricity rates to optimize energy costs.

Function Logic

  • When the PV output power is sufficient, the energy will be first supplied to the loads, with the excess stored in the battery. Any remaining energy beyond battery capacity will be fed into the grid.
  • If the PV output power is insufficient to meet the load demand, the system discharges the battery to compensate. If the battery capacity is insufficient, the system draws power from the grid to meet the load demand.

Procedure

  1. Navigate to the Energy Management page and select the Self-Consumption mode.
  2. Set the Threshold on Power Purchase (Demand Control) and Threshold on Power Feed-in (Demand Control).
    • Threshold on Power Purchase (Demand Control): When the power imported from the grid exceeds the set threshold, the battery will cover the excess demand.
    • Threshold on Power Feed-in (Demand Control): When the power fed into the grid exceeds the set threshold, the excess will be used to charge the battery.
  3. Enable Custom Month Span. For details, see Custom Month Span.
    Note: If Custom Month Span is disabled, the battery is allowed to discharge all day (0-24h) without charging.
  4. Click Apply Settings.