For me, KNX would not be convincing in terms of cost-benefit ratio.
KNX is not the topic here.
And I think I need more than just one socket at the window.
Well, rather outside and not inside at the window.
What do you generally think of the idea of placing a socket outside under the roof,
I now have three in the roof overhang. So I find that quite useful... if you don’t need kilometers of cables and also no multiple adapters at the few outdoor sockets.
Isn’t the cooktop actually more important?
Only if both are separated from each other. Because usually, the oven and the stove are above each other... then you only have one connection for both.