Building Lighting Systems
A major portion of your electric consumption is from electric lighting.  Lighting technology has advanced to the point that every building owner should evaluate the lighting systems within their properties.  Fluorescent lighting has gone through several changes, from styles of T-12 to T-8 and now to T-5's, with each version being more efficient.  Ceiling can lights now have high efficeincy replacement bulbs and even exit signs have long life LED bulbs that outlast most every other type of bulb formerly used for this purpose.  The next step will be all LED lighting, reducing the cost to operate your building and these lights will have several times the life of current lighting systems.