Light emitting diode ( LEDs ) light bulbs have become required in recent years, but do they
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Light emitting diode LEDs light bulbs have become required in recent years, but do they make financial sense? Suppose a typical watt incandescent light bulb costs $ and lasts for hours. A watt LED, which provides the same light, costs $ and lasts for hours. A kilowatt hour of electricity costs $ A kilowatthour is watts for hour. However, electricity costs actually vary quite a bit depending on location and user type. An industrial user in West Virginia might pay $ per kilowatthour whereas a residential user in Hawaii might pay $ You require a return of percent and use a light fixture hours per year. What is the breakeven cost per kilowatthour? Do not round intermediate calculations and round your answer to decimal places, eg
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