Keep in mind that solar, kind of like electric cars, has much of its costs front loaded. Roughly speaking, you spend $20k more on an electric car, and then save

Keep in mind that solar, kind of like electric cars, has much of its costs front loaded. Roughly speaking, you spend $20k more on an electric car, and then save $15k on fuel because its cheaper to run off electricity than gasoline. But that $20K is today and the $15k savings is over 15 years. Similarly w/ solar panels. Return of investment is a few years. whereas marginal coal is probably very profitable, that is coal from an existing operating mine.