With a 50-year simulation, after incentives and since we'd be "locking in" on inflation (so this is in "May, 2015 dollars") - $.0124/kWh in the first set-up (cheap poly panels), $.0125/kWh in the second set-up (presumably more long-lasting mono-si panels and different inverter setup), $.0201/kWh in the third set-up (expensive mono panels with passive sun-tracking mounts). This also assumes the panels can be resold after fifty years for 20% of their original value, which I'm unsure of, and assumes nothing breaks (which I'd price in if I thought I could do reasonably).

The biggest difference compared to how this'd be set up in a residential setting would probably be the loan rate, but some states may have very generous rates for solar projects.