Only if ignoring all externalities. If the panels could be manufactured in space, or on the moon, via some ultrasmall in-situ-utilizer bootstrap gizmothingy, wh

Only if ignoring all externalities. If the panels could be manufactured in space, or on the moon, via some ultrasmall in-situ-utilizer bootstrap gizmothingy, which would then use material from the moon, or asteroids, we'd save much mining and manufacturing here on earth. Which has its own costs. As we all should know, meanwhile?