The other half of the plant Corus set up is looking at insulated...

The other half of the plant Corus set up is looking at insulated steel. Whether they intend to combine the two has not been stated yet, but Corus are in both markets from the same facility, so easy to see it happening if there is demand.

My understanding of the panels is that they are not 100% solar coated, I think it runs in strips. Not certain, just from what I have seen.
This gives you areas to cut it up and screw it down without affecting the solar coating.
To be honest I have no idea what the method of getting the electricity out is, though one of the advantages of this being a co-opt project with Corus is that they will have addressed this early, they know their market. Had it been lab coats all the way until now, it is easy to see them having not thought of the builders.