September is the month the forecast stops being generous.
Clear one day, heavy cloud the next, and the gap on the roof is wider than the gap out the window.
Worth logging actual against forecast now, before the winter dip sets in.
Do you track yours?
#SolarPanels
ALT Sun Hours generation calendar for September 2026, a grid of day tiles coloured from blue for low output to orange for high, with the first four days marked as metered, today ringed in orange, and a summary reading 4 days metered, 48 kWh, forecasts 96% accurate, shown in the app's blue daytime palette.