wiltshire
2025-07-11 11:13:13
- #1
That cannot happen because the modules are connected to the storage and the storage is connected to the inverter.
That makes sense if the battery unit has the trackers.
This gives you a maximum charging power determined by the modules and a maximum discharging power determined by the inverter, allowing you to sensibly influence the number of cycles and thus the profitability, since the modules themselves are "cheap". That seems reasonable.
I assume you, like us, have a large system on the roof.
Larger than a balcony: yes, roof: yes, large with 9.99 kWp: no.
If you regularly come home only in the evening and fully deplete the fully charged storage again, the number of cycles would increase accordingly.
Here, recharge demand and storage dimensioning count. If the car empties the battery and then electricity has to be bought for the base load, nothing is gained.
Specifically for us: we have an 8 kWh storage with 8 kW charging-discharging power. Without a connected car, a full battery in summer is sufficient for the yield-free period between the last and first sun rays. Anything more needed in this period must be purchased. Whether I buy the electricity for the car or the house makes no difference here, since overnight it remains one cycle. I could consider expanding the storage.
It just depends on when charging can take place.
For us: it depends on when charging actually happens. That may seem dialectical at first glance, but it is a rather fundamental difference. I will not start educating others to save a few euros on electricity.