@stux@mstdn.social
As panels are getting cheap, the support structure becomes a serious part of the cost (and even of the embedded energy). You need a lot more steel and foundations for such elevated panels.
Not sure about now, but not too long ago parking lots were money-losing PR projects(look us being green), while the field ones were serious.
Once we have enough PV to saturate summer peaks, every next panel produces less useful power. So lower cost is critical