this is a new build about 30 yards from where i live. 2 flat panels are being installed, recessed into the roof as with a rooflight.
looks like 4 square metres, in theory fit for a 4 person household, but won't give quite as long a solar hot water season as vacuum tubes. the panels, whilst facing south, are part shaded by both the big tree and the neighbouring two storey house (just outside the pic and to the right of the tree). the system should have been oversized (re panel area) to compensate for this - with the shading, the current setup is sized really only for a 2-3 person household.
they look like velux panels - I will check the brand with the builder next time i see him.
the house itself is being extremely well insulated. 150mm iso rigid board in the cavities, and something similar on the roof. well over current building control requirements.
i am hoping that is protective peel-off film visible on the panels. flat panels are reknowned for problems with condensation over time. the panels also look like they're installed slightly out of true, maybe it's my eyesight!