1483€ per kWp | CanadianSolar 11.48 kWp and SMA inverters

274 full cycles, with which use case do you want to achieve that?

Your system is already quite large, but how do you want to drain the battery again at night during summer? I don’t even consume 12-13 kWh at -5° in winter with a heat pump and ventilation system at night.

We now have an average consumption of 20kWh per day (Winter). When we are not at home, e.g. away for the weekend, it is about 16kWh.

In summer, the whole thing increases a bit because, for example, air conditioning and the pool are added. Tending to be even more because we will remove the ST and heat the hot water during the day with surplus in summer. Oh yes, we have no heat pump and no electric car.

Even with our already very high consumption, a storage system is not worthwhile unless it becomes half as expensive or the electricity price rises sharply.

P.S. with a 7.7kWh storage, we are even over 300 full cycles.

yes, according to some calculator. Unfortunately, reality looks a bit different.

You will, even with your large system, have many days from mid-November to the end of February/early March where you will be glad if you get a total of 4-5kWh per day from the roof.

It should be like this for 5.6 years. For 10k€ it is 10.1 years. The indicated cycles are from my planned system with about 29kWh. But the biggest factor is the price and/or the electricity price.
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12.8kWh for 5000€, where is that?
You can’t even get the materials for that, then you still need the inverter and connection, ...
Then 274 full cycles, how do you want to manage that?
Heating water at night with a heating rod is not a sensible use case for storing electricity. ;-)

yes, according to some calculator. Unfortunately, reality looks somewhat different there.

You will have many days, even with your large system, from mid-November to the end of February/beginning of March, where you will be glad if you get a total of 4-5kWh per day from the roof at all.

That is nonsense. I myself generated 300kwh in December with my 10kwp system. So on average 10kwh per day. There were even several days when the system generated over 30kwh. You can then figure out what that would mean if I had a system 2 and a half times as large.

That is nonsense. I myself generated 300 kWh in December with my 10 kWp system. So on average 10 kWh per day. There were even several days when the system generated over 30 kWh. You can then calculate what it would mean if I had a system 2 1/2 times as big.

Average values do not apply here. I also generated just under 300 kWh in December. However, only on 6 days. On the remaining 25 days, rarely more than 5 kWh was generated and of course it was consumed directly without going through the storage! Check that properly with you again. ;)