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Do you turn out the lights?
Posted by WT • 9/17/07 • Subscribe to this Discussion [RSS] • Report This Topic
I do, but have recently begun to wonder if it is as clear cut a choice as I thought. Read my questioning here if you like:
willtaft.com/energy-use/turn-out-the-lights-or-not/
After how much time do you think the cost savings of turning off lights surpass the added cost of shorter-lived light bulbs?
User Comments
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I am always chasing after my husband and children turning lights off whenever I see them on. This habit is ingrained from childhood and it feels wasteful to leave the lights burning when no one is in the room. I couldn't tell you how much is saved, but I know I burn a lot of calories running from the basement to the second floor and back down again turning off lights.
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Yes indeed, I do. Though at night in my entryway I have one small lamp I do keep on for most of the evening...
Since the cost of medical care after my falling down the steps would be HIGHER than the light bill. :-) -
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@urikalish: That is correct, but as I recently wrote on my site, even that is not as clear cut as I would like.
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From what I have read, modern incandescent bulbs are less prone to deterioration from being turned on and off as compard to bulbs from 20 years ago.
For the money savings, take a look at this:
What about the costs : According to the CEC initial cost of an incandescent light bulb is about $0.50. Recent prices comparisons conducted in the Sacramento and Los Angeles areas found that CFL light bulbs were generally under $3.00 per bulb. However, a new 20-watt compact fluorescent light bulb produces as much light as a traditional 75-watt incandescent bulb. The CFL also lasts up to 10 times longer than a traditional incandescent light bulb (an incandescent bulb has a lamp life of 1,000 hours while a CFL has a lamp life of 10,000 hours). Bases on and average California energy costs of $.105 per kWh the total energy cost of a incandescent light vs. a CFL over the life of a CFL is $78.75 vs. $23.25 or a $55.50 energy savings. Combine the energy savings with the fact that one $3.00 CLF will replace 10 $0.50 incandescent bulbs and the total savings per bulb is $57.50.
From: info.sen.ca.gov/pub/07-08/bill/asm/ab_0701-0750/ab_722_cfa_20070423_094447_...
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