Low sun angle in the winter vs summer means a bit more thought needs to go in to making the decision of whether net retention or net reflection is preferable. M

Low sun angle in the winter vs summer means a bit more thought needs to go in to making the decision of whether net retention or net reflection is preferable. My strategy is to cover the entire roof in solar panels and to try to find useful things to do with the electricity. Sadly that does not send much power back into space, and my panels are only 22% efficient. Plus, in practice, you'll want a ton of insulation between the interior space and the roof anyway. So if you've done a good job there it's kind of a moot point wrt/interior comfort. But sending that power back into space rather than absorbing it can reduce thermal cycle stress on the roof and keep the outdoor space nearby cooler.