It's usually done on a project-by-project basis when there is an interest on the part of the department to proceed with some kind of evaluation. Recognizing that they have some money to pay us, then we will take a look at a particular facility.
We have a mechanical engineering section as well, and one of the things we will do is to take a look at related mechanical opportunities. For example, if a chiller is in rough shape or is under capacity for a given situation, then obviously there is an opportunity for a reduction in the lighting load to extend the life of the chiller rather than replacing it. Obviously, any cooling requirement is directly related to the amount of lighting in the building.