How much does it cost to light two 100 watt bulbs for five hours a night for 30 days?

7 Answers

Relevance
  • 1 month ago

    whatever you pay for 30 kilowatts.

    • Login to reply the answers
  • JetDoc
    Lv 7
    1 month ago

    That would depend on what your local electric utility company charges for power.

    • Login to reply the answers
  • Dimo
    Lv 5
    1 month ago

    2 bulbs x 100 watts x 5 hours x 30 days = 2 x 100 x 5 x 30 watt-hours.

    Which equals to 30000 watt-hours.  Which is 30 KWH. 

    Where I am, power is 15.2 cents/KWH, so it would cost me $4.56

    • Login to reply the answers
  • 1 month ago

    Electricity costs vary everywhere. What my utility charges per kilowatt hour may not be the same as what is charged anywhere else. You would use one kilowatt hour per day if those are incandescent bulbs. At an average cost of 12 cents per kilowatt hour, it would cost $3.60.

    Energy efficient bulbs would obviously cost less.

    • Login to reply the answers
  • How do you think about the answers? You can sign in to vote the answer.
  • Scott
    Lv 6
    1 month ago

    It depends on what your electric utility charges per kilowatt hour.

    • Login to reply the answers
  • Dan
    Lv 4
    1 month ago

    About $3.50 - depending where you live. If you used LED equivalent bulbs the cost would be about 35 cents.

    • Login to reply the answers
  • Anonymous
    1 month ago

    Depends on power costs.  200 W = 0.2 kW

    Multiply 0.2 kW by the number of hours the lights are on.  Multiply by power costs in $/kWh 

    • Login to reply the answers
Still have questions? Get your answers by asking now.