Why change at all?
Most commercial lighting systems today utilize outdated, inefficient old technology lighting (such as T12, T8 and T5 fluorescent bulbs, HID, etc.). These old technology systems produce poor light and are very wasteful, in terms of energy consumption and maintenance expense. In addition, mandates from the U.S. Department of Energy have already prohibited the manufacture of certain inefficient lighting options. These old technology systems are also hard on the environment, driving up greenhouse gasses (CO2) and hazardous waste (mercury, etc.). Leaving these systems in place is simply wasting money.