Solar system with storage in the garage, possible?

What I just thought of: Garages are often located on the boundary as boundary buildings. I believe that a solar system on top is not so easily possible then, because it might get too high?

The NRW state building code, for example, prescribes a distance of 1.25m from the boundary due to fire protection!! But in fact, a (counterflow) elevated photovoltaic system on the flat garage roof is often quite easy to implement. Just plan for an additional MPP at the inverter (have the inverter appropriately sized) and have them install it directly. Every kWp counts

Now that Bookstar has an electric car, he is even more pro photovoltaic and storage

A battery in the photovoltaic system usually has nothing to do with an electric car. The discharge power of most systems provides barely 20 km of range per hour, and with 10 kW from a typical battery you might drive about 60 km. The idea is widespread but quite nonsense. Feeding surplus electricity from the photovoltaic system into the car is worthwhile. Photovoltaics on the garage is no problem. A battery in the garage is thermally stressed, which it does not like very much, so better put it in the heated envelope of the house.

Please build without battery/storage, unless it is subsidized so that it costs almost nothing. It is never worthwhile, as the kWh from the storage is well over 30 cents.

Please install without battery/storage, unless it is subsidized in such a way that it costs almost nothing. It is never worthwhile because the kWh from the storage comes at well over 30 cents.

I have an offer for 5kWh for 3000 euros net. (SUBSIDY 700 already deducted) That could already be worthwhile, right?

4x Pylontech US2000 batteries cost about 4000 euros and have a capacity of 9.6 kWh.