Re: How many
vern further to your concern about solar panels there is another benefit with them. We got them installed and the installer wanted to put metal frames on our roof to increase the angle of them. I refused as I could see them being prone to high winds. So had them installed with the same angle as the roof. Now the benefit we got from that is? Because they now have a gap between the panels and roof it acts as insulation when the current bun is beating down and reduces the temp in the house. Due to the fact that there is nearly always a breeze between them. One thing that does need attention is to make sure that you keep them clean as mildew or some other crap grows on them after a while rendering them not as affective as they should be. As an aside. Even if they become obsolete will keep them for there insulation
That's the way the mop flops.
My thanks to Brian for this site.