I finished the third row of supports last night, and today, we have dense clouds and heavy rain again.
Bank 2 had 54 panels last week, which showed it could charge even in cloudy conditions. This even included using the dryer on cloudy days. I moved 12 over to bank 3 as 12 panels could not keep up with basic loads with full sun. I always wondered what it would really take to have no worries on cloudy days. I figured that even at 54, it would still be difficult. At 135 panels, it's still quite short of that number per bank.