I watched the video and saw the bit about raising them 150m off the roof. I guess this is mostly to make room for actuators in the future but you did mention it also allowing some light into the roof lights. Just wondered how much gets in?
Phil, those bifacial Solar Panels could be handy in that kind of situation possibly as they allow some light to pass through with the intention to bounce back on the undersurface for extra harvesting.For the roof lights on the side quite a bit, for the center one not so much. But I can open them to the first notch and let air in the van.