Even though I find the way you implement the super beautiful project and that you did your research incredibly impressive, unfortunately you are mistaken with your photovoltaic system or you were badly advised...
No more modules will be added. The system has 9.920 kWp.
Even though it’s not cost-effective, we have a system with storage. The offer was very good...
If you go over 10 kWp, it only makes sense if you exceed it significantly. Since distances to the parapet, etc. must also be maintained, we couldn’t put much more than the current modules on.
We will operate the system with dynamic active power reduction. Since we always have a high base load, the system can run at 100%. So at least there won’t be the hard 70% cut-off because self-consumption is taken into account.
We could definitely use more photovoltaic electricity.
Our other roof areas are too small, partially shaded, greened, used otherwise, etc.
You have a roof on which, even with ample side clearance, at least 15-20 kWp can fit. Your modules are probably mounted with an east/west orientation. This usually helps to achieve a high self-consumption (even without storage) over the day. With your system you will never reach significantly over 70% of your module peak power. One could even seriously consider a hard 70% limit here.
If you have storage, all modules would need to face south for maximum yield. Otherwise, without storage, east/west and the often-quoted “full roof.”
Even if it probably won’t bother you much if the photovoltaic system is not ideally matched or profitable, more could have been gotten out of it here.