Question-and-Answer Resource for the Building Energy Modeling Community
 | 1 | initial version |
The major changes we have seen with 90.1-2010 is in the lighting and daylighting side of things. LPDs are lower, and daylighting is required by code in many space types. Daylighting in itself is very complicated, with a calculation being applied to each zone to first see if it needs daylighting, and then to find the controlled fraction of lights in the zone. Another interesting thing is that depending on the building/space types, the 2010 baseline might be only slightly better then 2007, and in other cases it is 30% or more.
