ᐅ Operating data of a 10 kWp system. Various data updates

Who here has installed a photovoltaic system with a capacity of 9-10 kWp in recent years and would be willing to share some operational data?

The following information would be of interest:
- Location (city or region)
- Roof orientation
- Annual electricity production in kWh
- Annual self-consumption in kWh or as a percentage

What is the difference compared to a 5kWp system? You can also scale that up to 10kWp.

The yield, however, should be similar everywhere if there is no specific shading. Every photovoltaic calculation program has more data than any collection available online.

And finally: Self-consumption is individual and not really comparable.

The annual electricity production in kWh for the 10 kWp system is exactly twice as high as that of the 5 kWp system. The self-consumption cannot be easily converted though.

I am asking about the annual electricity production because we have two offers: one calculated with 730 kWh/kWp, and the other with 890 kWh/kWp.

The self-consumption rate is calculated at 35% in one case and 43% in the other.

In my opinion, both energy consumption values are set too high, or is there additional storage included? What total consumption values for household and heating are being assumed?

Energy consumption values are not really comparable anyway, as they strongly depend on the base load, annual distribution, and daily distribution.

To reach 40% with a 10 kWp system, I believe you would need to operate an air conditioner, a pool, or a cold storage facility during the summer.

Yes, the figures for self-consumption also seem deliberately set too high to make the cost-effectiveness calculation look better (which is actually unnecessary). The self-consumption rate calculator by Volker Quaschning results in an average value of 20% for our configuration.

You can verify the yield forecast yourself using pvgis (Google).