Never use an abrasive material to clean your solar panels. Doing so could cause them to become scratched and less useful than they were when they were installed. Your best bet is to have a gentle cleanser and cloth on hand to clean your panels so that you know that you have what you need when the time comes.
If you think you might need to replace your roof in the near future, hold off on installing solar panels. Solar panels can be difficult for some roof installers to contend with, and this means a more difficult and increasingly costly roof repair bill. If you can afford to wait on the panels and replace your roof first, this is the way to go.
by Dana Fowle Aired August 16, 2017.
Know that solar panels do not immediately mean free energy forever. You need to be mindful of the fact that solar installations often carry a large up-front price tag. However, you also need to balance that with how much energy you can save over the long run, government incentives and the possibility of selling your excess power into the grid.