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Dear Mark, Thank you for your message. We confirm that you have correctly configured the battery system. For LFP batteries, please define the charging strategy as follows: The values within the green box are not relevant in this case (for LFP batteries) and will not be taken into account. However, in the red box, the DOD (Depth of Discharge) is defined in percentage terms. If the system allows for a full 100% DOD, leave this value at 0%; otherwise, enter the difference here (100 – DOD in %)—for example, for a 90% DOD, please enter 10% here. The usable capacity is calculated based on this value.

Dear Mark, Thank you for your inquiry. You can watch our webinar recording. The financial analysis is explained starting at 01:00. Further information can be found in our online help section.

Thanks. I have created one already as per below. Just check below if all settings correct please. Is there a place where you can set the DOD?  

Dear Mark, Thank you for your inquiry. We confirm that you have selected the correct system type (Grid-connected PV System with Electrical Appliances and Battery System) and the correct battery system (featuring DC intermediate circuit coupling, in accordance with the circuit diagram). Although your preferred battery system (Deye 20K inverter with 5.12 kWh battery) is not currently available in our database, the Deye 20K inverter with 20.5 kWh battery system is available. You can copy this battery system and reduce the number of batteries per string from 4 to 1.

Dear Mark, Thank you for your inquiry. Roughly speaking, daily consumption amounts to 100 kWh. The PV system generates 43,247 kWh per year. Assuming an even distribution of solar radiation throughout the year, this would correspond to a daily production of 118 kWh. However, since the distribution varies significantly by season, it can be assumed that less than 100 kWh will be produced during the winter months. The energy storage system compensates only for daily (not seasonal) fluctuations; therefore, it is likely that energy will be drawn from the grid during the winter months. You can use the Diagram Editor to view the specific times at which energy is drawn from the grid (red line). If you wish, please feel free to send us the project file (*.pvprj) at hotline@valentin-software.com, and we will take a look at it.