How Many Hours Must Bulbs Burn to Save $73 Million Annually?

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SUMMARY

The discussion centers on calculating the number of hours per day that a 60W incandescent bulb and a 13W fluorescent bulb must be used to achieve a total annual electricity savings of $73 million for Canadian households. With 13.3 million residential households in Canada and an average electricity cost of 8.0 cents per kW-hr, the goal is to determine the average daily usage required for the lower wattage bulb to result in significant savings compared to the higher wattage bulb. The inquiry emphasizes the need for clarity on the conditions under which these savings are realized.

PREREQUISITES
  • Understanding of basic electrical power calculations
  • Familiarity with wattage and energy consumption
  • Knowledge of cost per kilowatt-hour (kW-hr)
  • Basic arithmetic and algebra skills for solving equations
NEXT STEPS
  • Calculate the annual energy consumption for both 60W and 13W bulbs
  • Research the impact of switching to energy-efficient lighting on household electricity bills
  • Explore the environmental benefits of using fluorescent bulbs over incandescent bulbs
  • Investigate government incentives for energy-efficient home upgrades in Canada
USEFUL FOR

Homeowners, energy efficiency advocates, electrical engineers, and anyone interested in reducing household energy costs and understanding the financial implications of lighting choices.

theone
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Homework Statement


An advertisement claims a total annual savings in electricity worth 73 million dollars for each Canadian household replacing one 60W incandescent bulb with an equivalent 13W fluorescent bulb. If the typical total cost of electricity (averaged across Canada) is 8.0 cents per kW-hr, how many hours per day must the replacement and original light bulb be left switched on (on average over the year)?Use the following assumptions: there are 13.3 million residential households in Canada

Homework Equations

The Attempt at a Solution


I need some help understanding the question:
"how many hours per day must the replacement and original light bulb be left switched on (on average over the year)?" ... in order to achieve what?
 
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theone said:

Homework Statement


An advertisement claims a total annual savings in electricity worth 73 million dollars for each Canadian household replacing one 60W incandescent bulb with an equivalent 13W fluorescent bulb. If the typical total cost of electricity (averaged across Canada) is 8.0 cents per kW-hr, how many hours per day must the replacement and original light bulb be left switched on (on average over the year)?Use the following assumptions: there are 13.3 million residential households in Canada

Homework Equations

The Attempt at a Solution


I need some help understanding the question:
"how many hours per day must the replacement and original light bulb be left switched on (on average over the year)?" ... in order to achieve what?
In order that powering the lower wattage bulb will cost $73mil less than for powering the higher wattage bulb----for the same number of hours.
 
Thread temporarily closed to further help, being a homework question with no working.

theone should PM me if there is more to be added to this thread
 

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