Comment by pfdietz

You're utterly wrong there. The optimum, cost minimizing solution can involved overprovisioning of renewables.

Indeed, we already see this internally in PV installations. It's best to overprovision the modules beyond what the inverters can handle and just clip some of their output at times of peak insolation. That's because inverters that could handle the peak would hardly ever operate at top power and could be downsized without losing much overall output.