I was asked today for information to enable the scaffolder to plan the frame, so sent them 3 photos. This one is good as an illustration of the roof BEFORE the PV installation goes up.
I was also asked what sort of display I want eg a panel in the kitchen/utility to show current and accumulated amps/kW/kWh output. I would also like to know the amount used by appliances in our house, and the amount exported to the Grid. Perhaps that should be visible from the OfGen meter.