The article talks about allowing more light into greenhouses, but the material also cools a room. One of the biggest reasons for greenhouses is to trap warmth for plants during cold periods. This might be fine for actively heated greenhouses, but I doubt it's the right choice for passive systems.
Greenhouses frequently get so hot they need to open their windows. I imagine that there is a sweet spot where a little less heating is worth it for the additional light hitting the leaves. It may be climate and season dependent.
