You don't need a power station or an electrician, but you definitely need an inverter and other equipment such as a few cables and brackets. I would also use other panels, because the Noqon panels are not rainproof and not suitable for permanent installation - special balcony power station panels are much cheaper for this.
(Feeding a charged power station into the house grid is only possible with the house fuses switched off and a so-called "suicide cable" with plugs on both sides - and if the electrician sees that, he will have a heart attack. This is incredibly dangerous and really forbidden).

It certainly needs a power station to store the electricity. Then an electrician has to connect the whole thing to the house electricity.