I won't claim the engineering knowledge that Altaskier apparently does. Nor do I suppose that there currently exists a ready-made option for fitting commercial, passenger aircraft with solar panels. But my nose registers, at a sensitivity of 1 ppm, any whiff of snowing with figures, AKA BS by numbers. So, 1) Batteries? No-one would suggest solar as anything but an auxiliary power source for large aircraft; the power produced would be immediately fed in to replace the usage of some liquid fuel - no storage (incidentally, when parked, the plane could be plugged in and supplying power to the airport), 2) solar panels designed to cover roofs and solar arrays would, yes, be too heavy, too inflexible, too destructive of laminar air flow, to be fitted on an aircraft's wings... but who says only those kinds of panels could be used. Why not design panels for aircraft wings? As it is, there is already a wide variety of panels in production, and much more in the lab. There is talk of spray-on panels. It's fair enough to say there is nothing good to go right now. To say there never can be is drawing a long bow. 3) 1.4 watts/m2...Was that the figure? All I know is, I can't imagine that insolation at 10,000+metres isn't going to be far higher than at any terrestrial location, and the capacity factor should be higher - there is still the limitation by angle of incidence, but almost none of the usual diminution due to the sun slanting through a great slab of morning and evening atmosphere.
BTW, why only the wings? The fuselage is not tiny, and would present less of a flexibility problem.