Construction costs are currently skyrocketing

They're being re-uploaded on Truth Social right now because Musk no longer wanted them on Twitter (or substack), right?

The offer from the sister still included 19% VAT on the components and was probably still quite expensive "back then". However, component prices are currently plummeting (of course, if SMA is supposed to be on the inverter, expensive and waiting time, take Huawei instead).
1 kWh of storage capacity now costs around 250€, if a great name is attached, 500€. Don’t let yourself be fooled ... in case of doubt, I would actually postpone the construction of the system rather than jump on the gold rush now. But this discussion can be had with every trade, with the difference that photovoltaic or parts of it (storage) are also easily retrofittable.

I would not apply this only to a photovoltaic system, but to everything. Only place orders if it is urgent and absolutely necessary; otherwise, wait until next year! Prices will be lower then.

A first rough offer for the outdoor facilities:

1. 90.00 sqm rectangular paving anthracite 20x10 8cm thick, soil excavation 30cm, base layer 20cm made of concrete recycling
2. 44.00 sqm terrace execution as above (terrace slabs material price approx. 35.00 euros/sqm assumed)
3. estimated approx. 50.00 linear meters edging terrace and paving areas with lawn edging stone 6cm set in concrete
4. soil excavation estimated 50.00 cbm to be removed and disposed of

14,500 €