As other comments have stated, there are good, beneficial reasons to having solar panels in fields, at least in some number of circumstances. And the car park solar panels fortunately are happening more often. Several of the hospitals and their outlying healthcare offices in my area have done this over their parking lots, and so has the community college. In the latter case it was more of a cynical ploy to get more local libs to vote yes on a measure to give more money for construction on the school even though most of it went straight to raises for the administration, all while they laid off adjunct faculty and cut community programs like the theater arts program and planetarium and tore down the dorms that had been giving students a cheap place to live just to increase the parking spaces - but hey they put solar panels over those parking spaces so stop complaining! There may have been similar shitty motives for the hospitals too that I just don't know about. But yes, more solar panels over concrete especially when providing a secondary benefit for people (sadly even when it is car-brain adjacent) is good and should be done more.