Very nice, was curious as to what yours would be.total for May 1526.2 kWh
My predicted generation for May with the new panels would be 2091, but that was using last years May figure (I've yet to do PVGIS calculations for my current panels), even if we use this Mays figure it puts me in the region of 1750 kWh. Also the new panels would give about 60% more, so 1047 x 1.6 = 1675 kWh