I ordered a 2.56kWh storage expansion today. €585 gross per kWh. The money has to go somewhere. Based on the graphic, I then have a ratio of 1.19 for the storage and 1.15 for the photovoltaic (see X and Y coordinates), assuming a total household consumption of 7500kWh.
Perhaps interesting for one or the other ( ). Unfortunately, I am not allowed to link it. Just search for the name of the figure if you are interested in details.
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