Energy Rate (¢/kWh)
Cost of Bulb Replacement
Minutes to replace a bulb
The average lifespan of halogen bulb: 2000~2500 hours.
The average lifespan of incandescent bulb: 750~1250 hours
The average retail price of electricity in the United States in 2011 was 10.94¢/kWh.
The average prices by type of utility customer were: Residential: 11.76¢/kWh,
Transportation: 9.7¢/kWh, Commercial: 11.22¢/kWh, Industrial: 8.88¢/kWh