Reply #27: It's going down.

[AZCat]

I just went to a seminar for Standard 90.1-2004, the commercial building energy standard adopted by many code jurisdictions in the US. The allowed Watts/sqft is down (on average) by about 25% from the previous version (Standard 90.1-2001) to around 1.2 W/sqft. Previously it was common to see 2-3 W/sqft installed in commercial buildings, especially retail. Unfortunately this only governs commercial new construction and renovation projects - buildings that aren't going to be modified can still use as much lighting as they have installed without restriction.