You may have lighted parking lots, signs, entrances, walls, and landscaping
that could be turned off at times, or used fewer hours, or with lower wattage
lamps. Use only necessary safety and security lighting.
At night and when areas are unoccupied, make sure the only lights left on are
those needed for safety, security, or some other specific purpose. In the
daytime, make sure that aesthetic and security lights are off.