[AndyTheBear]

I was wondering same thing. According to a "cost calculator" I found here, assuming the cost of electricity they provide, the cost of running a 100 watt bulb for 40 hours a week over a year is $127.02. While the cost of running a 12 watt bulb would be $15.24.

So roughly speaking, if the 12 watt bulb lasts 6 months its paid for itself..although this may vary depending on how much time you have it on in a week and much electricity costs for you.

[fireman15]

According to a “cost calculator” I found here, assuming the cost of electricity they provide, the cost of running a 100 watt bulb for 40 hours a week over a year is $127.02. While the cost of running a 12 watt bulb would be $15.24.

I used the same calculator. 40 hours a week comes out to 5.7 hours per day, I put in the national average of $.11 per kilowatt hour. Your cost calculator said that the cost to run a 100 watt light bulb for a year was $20. If you had your 100 watt light bulb running 24 hours a day for a year... the cost would still be only $96.36. What figures did you input?

http://www.citytrf.net/costs_calculator.htm

I am a big fan of LED flash lights, but I don't think that they make good sense yet for interior lighting. But if Comrade Obama gets his way and out rates "necessarily skyrocket" they may pencil out better in the future.

[jeffc]

.....the cost of running a 100 watt bulb for 40 hours a week over a year is $127.02.

I must be missing something somewhere (like brain cells, I'm told!). My kilowatt hour is 10.4 cents. A 100 watt bulb will burn a kilowatt in 10 hours. That's 10.4 cents (+ tax....). 40 hours a week would be 41.6 cents. Times 52 (for a year) would be $21.63. For a regular 100 watt incandescent bulb.

Did I calculate wrong? BTW, 75 watt is the brightest we use, except for porch lights. Normally, it's a 60 watter in each light fixture.

[1Old Pro]

It’s great for applications when you want constant on - 168 hours per week.

[1Old Pro]

It’s great for applications when you want constant on - 168 hours per week.