Replace your metal halide lighting with more efficient and easier to control fluorescent fixtures which will save you nearly half on your energy use. Replace T12 (1.5" diameter) fluorescent tubes and magnetic ballasts with T8 (1" diameter) fluorescent tubes and electronic ballasts to reduce lighting energy use by 35 to 45 percent
Install occupancy sensors and timers in areas that are used sporadically such as break rooms, restrooms and storage areas. This way lights are only on when someone is in the room, reducing energy use by up to 40 percent.
Install light emitting diode (LED) exit signs. They use 80 percent less energy and last 10 years, compared to 12 months or less for incandescent.
Make sure indoor lights are turned off overnight and on weekends. And make sure outdoor lights are turned off during the day.
Clean bulbs, light fixtures and lamps regularly. By removing dust and dirt you may increase the output of your lights. Proper selection of F-bays can improve fixture cleaning cycles
To prevent glare, eyestrain and headaches, do not “over light.” Too much light can produce poor visual quality and costs more. The key to a successful lighting project is to pick the correct lamps, including number of lamps per fixture, reflectors, control strategy, wiring and switch schemes to best meet your needs.
Recycle fluorescent light tubes and high intensity discharge (HID) lamps due to mercury and trace amounts of other metals.