[dragonwriter]

> But here’s my question: If its financially advantageous to install solar on your roof, wouldn’t it be greatly more financially advantageous (given the main cost for solar installation is the labor) for energy companies to install solar at scale?

No, because the law in many markets requires energy companies to buy the net product of customer-premises solar at retail price whether or not they need it, so building more production capacity with the same basic output profile as the rooftop solar that has been deployed because of government subsidies, customer environmental concerns, and expectations of future retail price moves (and soon government mandates) would be counterproductive.