Node-RED DESS implementation issues with 15 minute pricing

[UpCycleElectric (Jan)]

@UpCycleElectric

Fun fact: tomorrow prices are 0ct (before taxes) all day long. With no official VRM-DESS settings to ensure such an opportunity is being seized upon to charge all our batteries to the brim automatically when such an opportunity presents itself.

I wasn’t the only one noticing:

DESS algoritme not logical when the whole day the price is zero

Tomorrow (4-10-2025) the energy price is the whole day around zero euro. (24H) I should expect that the battery will be charged during the day because the energy is for free. But this is not the case. The SOC stays the whole day at 20%. See picture below Even the energy of my solarpanels (forecast about 30kWh) will not be stored in the battery but send to the grid, but the price is zero. Can some one from Victron have a look to this. The behaviour of the DESS algoritm is not logical to me. I…