Drive around any city during daylight hours and you will see poles and building exteriors with their lights on.  This is costing the businesses in a couple of ways.  It will wear out the bulb and internal components twice as fast so they will be paying double for repairs and new parts.  They are also paying twice as much for their electricity bill on wasted light.

Most common causes of lights being on during the day is a problem with the photo cell or if it is on a timer it could be as simple as resetting or adjusting it.  Lighting does have an impact on a businesses bottom line, make sure that you are not spending money on exterior lighting that is not needed in the daylight!