Energy modelling for typical stadiums

It's been done. The best case I know of was a HOK project for a Ball Park that got silver. Water is often a issue as the playing field usually requires a lot of water to keep the grass from burning. Also, the SHGC of the glass from viewing boxes is problamatic. You can't go too dark or the view will be impeded. The window to wall ratio here is quite large. So when you compare here to a office, you compare badly. Also, process loads are huge (floodlighting, parking exhaust fans, etc.) and take away a large chunk from the pie which means making up savings in the remaining pie section is hard. Occupation profiles are often completely unknown and in my experience even less so from the architects. They are hard to establish and are event dependant. IMO the effort is large and the certification level limited. South Africa quickly aborted any greenbuilding certification of the FIFA stadiums whilst Brazil is still trying.