Actually it says daytime temperatures above the solar farms are 2C cooler and at night time the temperatures are unchanged. If you can't understand what this means and that this measurement takes everything into account, I can't help you. That makes you as dumb as EMH.MEASURED lower temperatures at the solar farms says the effect of solar farms is a net cooling
It only says that it's easier to move heat away from the panels than from the bare ground.
Not that the panels cool the planet.