In fact there is very little difference between plugging the AC side of a single panel into a socket and connecting a set 'the proper way' to your distribution

In fact there is very little difference between plugging the AC side of a single panel into a socket and connecting a set 'the proper way' to your distribution panel. The only difference is overcurrent protection and maybe cable section size. But for single panels this could be a non-issue. Source: i installed a set of solar panels myself.