Preparation for future photovoltaic?

How much does a photovoltaic module actually weigh? So what is the average load per m²? I have read between 15 and 25 kg. It’s not irrelevant, the roof has to withstand the additional load and still be able to cope with snow and wind.

How much does a photovoltaic module actually weigh?

My future modules (1740x1030x32mm) weigh 19.9kg including frame. That is 1.8sqm, so 11kg per sqm plus substructure.

I have attached the offer for you, maybe you can say something about it. I look forward to your opinion. Basically, your recommendation is to do without the memory for now? I hope it is readable, the scan from the supplier was already terrible.

Well, the offer is complete and the components are fine. For 70% hard, a 6kVA inverter would also be sufficient, but it’s not much cheaper. €1290 net per kWp I find borderline, actually too expensive. How fast can he set up?