Strom-Cloud experiences vs. feed-in tariff?

I think a big drawback of the storage is currently still the lifespan. Our independent energy consultant as well as the photovoltaic installer advised against it for this reason. The thing will eventually have to be replaced expensively, and then the calculations probably won't add up anymore at the latest. Unless you manage to push an incredible amount of the photovoltaic system's electricity into the storage and then really consume it yourself. But that is likely to be difficult in our latitudes.

We have had everything prepared for a storage unit. If the technology is mature and cheaper, we can retrofit it at any time if needed.

I have just received an email from my contractor and at the same time a call from him. The photovoltaic installer has now created an offer for our house: Photovoltaic system + storage + preparation for cloud provider for a ridiculous €32,756...

My contractor then said he could not in good conscience offer this deal to any of his clients, and I will not have it installed either. Better to design the system, as already mentioned here, so that it is sufficient for the heat pump and feed the rest into the grid! The only advantage is that I now have some data such as roof area, sun angle, etc.

For how many kWp would that be? And how many kWh would the storage have?

That sounds incredibly (!!!) expensive. For that, I would expect at least a 20+ KWp system.

That sounds incredibly (!!!) expensive. I would expect at least a 20+ kWp system for that.

And then there are also monthly installments.

With approximately 81m2 of usable roof area, the photovoltaic system would have a rated output of 10.56 kWp Storage: 10 kWh (4x 2.5 kWh lithium-ion storage units with integrated inverter)