Please read again. Energy demand was lower because it was a holiday, nothing to do with air conditioners.

Thanks. I didnt get that fully, because i saw that reply as phrased as a critic to my statement, whereas it supports my point (which was, that high demand/low availabality because of the summer is unlikely in that scenario). Or not, but it is not a real critic on my statement.

Of course such scenarios happen, especially the situation you described.

It was an addendum, not a rebuttal ;)

PV cells are actually more efficient at lower temperatures. The lost production comes entirely from decreases in the amount of sunlight.