Lighting

• Reduce excessive illumination levels to standard levels using switching, delamping, etc. (Know the electrical effects before doing delamping.)
• Aggressively control lighting with clock timers, delay timers, photocells, and/or occupancy
sensors.
• Install efficient alternatives to incandescent lighting, mercury vapor lighting, etc. Efficiency
(lumens/watt) of various technologies range from best to worst approximately as follows: low
pressure sodium, high pressure sodium, metal halide, fluorescent, mercury vapor, incandescent.
• Select ballasts and lamps carefully with high power factor and long-term efficiency in mind.
• Upgrade obsolete fluorescent systems to Compact fluorescents and electronic ballasts
• Consider lowering the fixtures to enable using less of them.
• Consider daylighting, skylights, etc.
• Consider painting the walls a lighter color and using less lighting fixtures or lower wattages.
• Use task lighting and reduce background illumination.
• Re-evaluate exterior lighting strategy, type, and control. Control it aggressively.
• Change exit signs from incandescent to LED.