We are designing an open aircraft hangar in southern Alabama that will not have any HVAC equipment.  How would we go about pursuing Optimize Energy Performance credits?

My initial thought is to create a whole building simulation model in Trace 700 modeling software as we typically do, model all the lighting and miscellaneous loads, then assign the hangar space to a heating only HVAC system with a schedule set so that it never operates (a system is required in Trace in order to run an energy analysis). 

The only energy usage difference between our building and the 90.1-2010 baseline building will be lighting (since the building is naturally ventilated and will not be mechanically cooled or heated).

Alternatively, would USGBC allow energy usage to be calculated in a spreadsheet since constant lighting and miscellaneous loads will account for all energy loads?