Photovoltaic + Battery - Which System - Experiences?

Good morning dear builders and homeowners! My name is Artjom and I am new here in the forum. B Briefly about my concern. We are building in Hannover and it will be a passive house with kfw40. We also plan to install a photovoltaic SYSTEM, and possibly connect it to the smart home. The battery storage should also arrive soon. We have read that Tesla, for example, will offer the Powerwall in Germany. With 7 and 10 kW and that is comparatively cheaper than the current providers. Has anyone already dealt with this intensively? Which inverter would be suitable and are there any restrictions in the selection of the photovoltaic system? We would appreciate your helpful answers. Best regards

Should the photovoltaic storage ultimately be economically viable? Somehow, I don't believe that yet. How high are the electricity generation costs per kWh?

Electricity generation costs should be around 20 cents per kilowatt-hour.

However, there is apparently a company from Leipzig that is supposed to surpass the Tesla battery, both technically and in terms of price. Both are supposed to come onto the market this year.

What amount of photovoltaic is sensible for a house with 190 sqm? Are there often problems with inverters and what causes them? Does anyone have a high-voltage socket in the garage where they charge their electric car or plug-in hybrid car? Can such a car be used as a battery storage?

Hello Artjom,

I have "removed" your link .... please observe the forum rules. Thank you very much!

There is apparently a company from Leipzig that is supposed to top the Tesla battery, both technically and in terms of price. Both are supposed to come to market this year.

With all price indications, you must consider that the pure storage does not help you; it has to be integrated into the existing system, connected to the modules on the roof. In this respect, the pure storage prices are always only half the truth.

Rhenish regards

Oh, sorry for the link. I will do better.
Yep. Definitely understandable that everything should fit together.

In the current situation, I wonder if one really should wait with the battery storage.
The kfw275 program is being adjusted. The feed-in prices to the public power grid are 12 cents.
The trend is clear, though – electricity prices are rising, the feed-in tariff is falling to about 6 cents by 2019.
The question is, from when does the battery storage really pay off?
At least with the specifically designed photovoltaic modules and the inverter, I want to be prepared...

But which ones are best suited for this point in time?

Only which ones are best suited for this at this time?

Just simply install a preparation for the later installation of a photovoltaic system; usually a clad shaft with empty conduits. When the time comes for you to have a system installed along with storage, you won’t have any mess in the house, but the prerequisites for connection will be in place. Rhineland greetings