1) Solar panel hardware costs are typically in the ballpark of 20-40% of solar farm costs. 2) You've assumed the panel costs double, which is likely false. 3)

1) Solar panel hardware costs are typically in the ballpark of 20-40% of solar farm costs. 2) You've assumed the panel costs double, which is likely false. 3) solar generation costs have been falling exponentially and upgrades are incorporated into various installations and new developments all the time.