# Optimize Self-Consumption -> Hold min SOC Initial State: `Optimize Self-Consumption` Target State: `Hold min SOC` ## Test Procedure 1. The system is brought to the `Optimize Self-Consumption` state by setting `Min SOC` lower than the current SOC (min. 5% lower) 2. `Min SOC` should not be lower than 10% 3. A production deficit is simulated by setting `Grid setpoint` to a negative value (-2000W) 4. Wait until the `SOC` stabilizes slightly above `Min SOC` ## Expected Outcome - The system first discharges the battery with 2000W. - Somewhere between `Min SOC + 1%` and `Min SOC + 4%` the system changes into the `Hold min SOC` state. - Once in this state, discharging is continuously throttled until it reaches 0W somewhere between `Min SOC + 0.1 %` and `Min SOC + 0.5 %` - The system then starts to charge with low power (<300W) in order to compensate for thermal energy loss. - The `SOC` stabilizes between `Min SOC` and `Min SOC + 0.5 %` - The `SOC` does not fluctuate by more than 0.1% once it has stabilized - Charging power does not fluctuate by more than 250W once it has stabilized ## Tested Outcome The system reacted as expected and switched to `Hold min SOC` state once the SOC reached `Min SOC + 4%`. Once the state changed to `Hold min SOC`, the discharging power is throttled for around 40 minutes, where it then reached 0W at `Min SOC + 1 %`. When stabilized the system charges with low power (<75W) to compensate thermal losses. The fluctuations are within +/-50W range.