Wall Street fell in volatile trading on Wednesday as weak Chinese and U.S. factory data hit material and industrial stocks.
Data showed U.S. manufacturing growth stayed at a two-year low in September, while Chinese factory activity shrank to a 6-1/2 year low in the month.
On the football stadium itself, there is a lot of debate and no clear answers. Stadiums use pretty efficient lighting, and certainly air conditioning is not likely to be an issue in the dead of winter. So using the low end of estimates, an average stadium might use 10MW of energy for five hours, or roughly 50 MWh for the game.