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1 min Reading time In systems with an SMA Sunny Boy Smart Energy, if you want to reserve a portion of the battery power for emergency situations, this is currently only possible with a workaround. We use the "Peak Load Reduction" function to keep a percentage of the battery charged. This step-by-step guide explains how you can configure this yourself via the "Sunny Portal powered by ennexOS" monitoring portal.
Click on ‘configuration’ and then on ‘energy management’
Click on the pencilicon next to ‘Peak Load Shaving’. Now you can modify this setting
Shift the slider to the right
Enter the threshold for peak load reduction here. This must be higher than the maximum power consumption in the home. For most homes, a value of at least 15 kW is sufficient, but if you use a lot of power simultaneously, set it higher, to 20 or 25 kW. An explanation is provided below the image.
The peak load reduction threshold is the limit above which the battery will kick in to meet power demand. The peak load reduction function is actually intended to limit peak power demand: for example, if you don't want to draw more than 15 kW (kilowatts) from the grid, the battery will kick in when your home's power demand exceeds that limit. When your power demand is below the threshold, the battery will recharge to ensure sufficient energy is always available. We use this function to maintain a high battery level. For this, we set a high threshold, which is never reached in practice.
Set the percentage. Slide the slider to the right to the percentage you want to maintain in the battery. The battery will now always remain charged at that level unless the public grid fails and you use the battery charge for emergency power.
Set the percentage. Slide the slider to the right to the percentage you want to maintain in the battery. The battery will now always remain charged at that level unless the public grid fails and you use the battery charge for emergency power.
