The first thing you have to do is find out how much you are being charged per kWh from the utility company. 40 watts is .040 kW. If the bulb was left on for an hour.040 kWh times what you are charged from the utility company and you will have your answer.
Now that you have read a simple answer, lets add reality. A 40W T-8/T-10/T-12 fluorescent bulb requires a specialized fixture for it to function. As part of that fixture a starter and ballast are included that also must be powered at nominal 80% efficiency and add cost to the user.
The next factor that must be considered has to do with environmental costs. each method of illumination does so via creation of heat. The heat must be dissipated and offset. The nominal temperature at the exciter of a 40W fluorescent tube is 110 degrees F with 70 degree F ambient environment. The nominal temperature of a fast start ballast (starter included) is 130 degrees F in the same ambient environment.
This stated, the cost to run a single 40W fluorescent tube one hour will be the sum of the 40W consumed by the bulb plus the cost to run the fixture plus the cost to offset the additional heat produced. Therefore expect to use your cost per KWh times .048 plus environmental cost.
Remember that even in incandescent lighting the environmental factors also play.
Assuming an electricity rate of $0.12 per kilowatt-hour, running a 70-watt light bulb for 1 hour would cost $0.0084 or 0.84 cents. This calculation is done by converting watts to kilowatts (70W = 0.07 kW) and then multiplying by the cost per kilowatt-hour.
The cost of electricity varies from country to country and between suppliers. Consumers can also have different tariffs so that it is cheaper to use electricity at times when others are not using it. There is, therefore, no simple answer.
Yes, a 160 watt solar panel can power a 200 watt bulb, but only during optimal conditions. You may not get continuous power output if there are factors like shade or weather conditions affecting the panel's efficiency. It's recommended to use a battery to store excess energy for use when the sun is not shining.
Energy suppliers of electricity and natural gas will give you a cost per kilowatthour, and your usage is metered. With coal you buy it by the ton, so you need to know how many BTU that grade of coal will give per ton. With oil, the energy content of that type of petroleum product should be available from the supplier, per gallon or 100 gallons probably. You would have to keep a check on how much you are using over a period.
its goin to run you bout 2000
$40.00 a year
ahm...depends on the cost per watt charged by your local provider... how much is it?
isang milyon
To calculate the cost of running a 15 watt bulb non-stop for a year, you first need to determine the cost of electricity per kilowatt-hour (kWh) in your area. Once you have that information, you can use the formula (Wattage/1000) x Hours Used x Days in a Year x Cost per kWh to find the annual cost. If the cost of electricity is $0.12 per kWh, running a 15 watt bulb non-stop for a year would cost approximately $15.79.
That bulb is 100 watts or 0.1 kilowatts so it uses 0.1 kilowatt-hour of energy each hour, which costs about £0.015
In 100 hours it will use 6 kilowatt-hours (units) of electrical energywhich would cost around £1 or $1.
The average for america is about 18 cents per kilo-watt hour, 0.18, multiplied by the 9 watts it consumes, 0.009 because we are using KILO-watt hours, to give you a grand total of: 0.162 Cents per hour to run
Approximately 5 kilowatt hours. Check your electric bill to see what you are charged per kilowatt hour.
About 7 cents an hour.
No, it is not recommended to run a 50 watt halide bulb on a 100 watt halide ballast. The ballast should match the wattage of the bulb to ensure proper operation and to avoid potential damage to the bulb and ballast. It is best to use a ballast that is rated for the wattage of the bulb being used.
The cost to run a 1000 watt light bulb for 24 hours is dependent on your electricity rate. Assuming an average rate of $0.12 per kilowatt-hour, it would cost $12 to run the light for 24 hours (1000 watts = 1 kilowatt).
Yes, it would cost more to run four 25-watt bulbs than one 100-watt bulb. The total wattage for four 25-watt bulbs is 100 watts, the same as one 100-watt bulb. However, the four bulbs would consume more energy overall due to the increased electrical resistance and potential inefficiencies of multiple bulbs.