How to design system from Load?

[M0GLI]

Suppose A house needs 2160Wh/day load. From this info How can I calculate and decide all the model of battery, panel and rating and parameters of PVsyst ?

[André Mermoud]

You can establish the main system sizing using the option "Preliminary Design" / "Stand Alone".

You have to choose the location and the plane orientation.

Then you define your load, the desired autonomy and the acceptable time during which you accept a lack of energy ("PLOL: Probability of Loss of Load").

And PVsyst will propose a battery pack and a PV array size.

The detailed study and full simulation of your system (with specified PV module, batteries, controller, etc) will be done in the "Project Design" part.

[M0GLI]

thanks for your reply brother :)