[interloxia]

Not quite as I understand it. At the low end, a couple of panels, yes. Beyond 960W of panels you will still need an an electrician rather than just the Schuko plug.

It's not clear to me why, for example, 2kW of panels which are also limited to 800W need need the special plug.

Hopefully I'm wrong!

"With a standard Schuko plug, a maximum of 960 watts peak is allowed on the DC side, regulated by DIN VDE V 0126-95. With the Wieland connector, a special feed-in socket, the limit increases to 2,000 watts peak. Anyone wanting to operate a system with up to 7,000 watts of module power will need a permanently installed feed-in socket, thus entering a range that is technically possible but also more complex to implement."

https://xpert.digital/en/balcony-solar-up-to-7-000-watts/