Energy conservation can be as simple as changing a light bulb. UMD is phasing in usage of long-lasting, low-energy compact fluorescent bulbs in its facilities. Dormitory light fixtures use one 32-watt bulb, replacing two 40-watt bulbs. Energy-friendly lighting is not limited to campus buildings, however. Lighting upgrades across UMD work to reduce electric consumption; motion sensors turn lights off and timers on parking lot lamps keep light where it's wanted.