Lighting
 
Xavier utilizes a variety of energy-efficient light fixtures throughout campus.
 
The outdoor light poles feature LED (Light Emitting Diode) lights that reduce energy consumption, minimize light trespass (casting light where it is not wanted, such as in a window when it is meant to only light up the street), and reduce glare.
 
There are also many CFL (Compact Fluorescent Lights) around campus, such as in the entranceway to Smith. CFLs are four times as efficient as incandescent light bulbs and last ten times longer. While incandescent light bulbs tend to cost more than their initial cost through usage, CFLs quickly pay for themselves in addition to saving hundreds of kWh (kilowatts per hour) over their lifetimes and preventing several tons of CO2 from being emitted from power stations.
 
Finally, we utilize T5 lights in many buildings, which put us ahead of the current accepted standard of T8 lights. Though the T8 is more efficient than the T12 (previously the standard light), the T5 surpasses the T8 in energy efficiency, producing more light with less wattage and emitting maximum light output for almost its entire lifetime.