You get about 113 kWh per m2 solar panel per year where I live. For 8m2 that's 911 kWh. So at an average 2.5 kWh per day. I guess 6.3 kWh a summer day is not

You get about 113 kWh per m2 solar panel per year where I live. For 8m2 that's 911 kWh. So at an average 2.5 kWh per day. I guess 6.3 kWh a summer day is not unrealistic. (I thought your number was way too high but it seems to check out ...)