Comment by Kon5ole

You may be right about the ROI in a strict sense, I just question why it matters.

A communal solar farm is not the same product as personal home solar anyway. When someone with surplus money decides to pay for their own solar it might be suboptimal ROI for them, but the rest of us get a little bit of solar benefits for 0 money.

And more importantly, solar starts replacing fossil fuels rightaway. No waiting for a communal, optimal ROI initiative to get started.

But of course, we should do those as well.