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The link below is an article talking about the cost of LED light bulbs and the push to get them lower - around $22 apiece.
http://www.foxnews.com/scitech/2011...ht-bulbs-led-replacements-cost-50/?test=faces
The article says: “However, 60-watt bulbs are the big prize, since they're the most common. There are 425 million incandescent light bulbs in the 60-watt range in use in the U.S. today, said Zia Eftekhar, the head of Philips' North American lighting division. The energy savings that could be realized by replacing them with 10-watt LED bulbs is staggering.”
So, I decided to find out what “staggering” meant.
The difference between a 60 watt bulb and a 10 watt LED bulb is 50 watts (duh).
If you burned that bulb for 1 hour it would be 50 watts per hour saved; pretty simple.
For my comparisons below I am assuming that the bulbs will be burning 24 hours a day.
So, looking at the big picture I multiplied 50 watts x 425 million = 21, 250,000,000 watts saved per hour in the U.S.
To determine how many kilowatts that is I divided it by 1,000 = 21,250,000 kilowatts saved per hour in the U.S.
The average U.S. cost of 1 kilowatt of energy per hour is $.095 or, 9 ½ cents.
Multiply $.095 x 21,250,000 kilowatts = $2,018,750 in energy cost saved every hour.
Multiply that by 24 for a full day = $48,450,000 saved per day.
Multiply that by 365 for a full year = $17,684,250,000 – that’s $17.5 trillion dollars in energy cost saved in the U.S. in a year.
To figure out how much that will save the average household, the average household in the U.S. uses 10,656 kilowatt hours of electricity per year.
At $.095 cost per kilowatt, that means the average household pays $1,012.32 for electricity a year.
If 1 bulb saves 50 watts, and there are 8,760 hours in a year, that equates to 438,000 watts, or 438 kilowatts a year less power used.
$.095 x 438 = $41.61 saved in energy cost per year, per bulb.
So, replacing each 60-watt bulb will pay for itself in 1 year.
An LED light bulb will last between 25 and 30 years.
Over the entire life of the bulb, conservatively estimated at 24 years (minus the first year to recoup the cost), you will save $1,000 per bulb in energy costs - total.
That means the money saved over the lifespan of 1 bulb would pay for 1 year of electricity bills.
Now, go and figure out how many light bulbs you have in your house.
The average household has 45 light bulbs.
45 x $41.61 = $1,872.45 in savings a year if all the bulbs were replaced with LED bulbs.
That means that light bulbs account for 18% of your yearly energy bill.
That also means it will cost $1,800 to replace all of the light bulbs in your house with LED bulbs. Ahhhhhhhh!
One other interesting piece of knowledge; central air conditioning and refrigerators account for 15% of the yearly energy usage per home. That goes up when you have more than 1 refrigerator. So, if you wanted to save even more money on your energy bills; get rid of one of your refrigerators and cut back on the AC.
Want to piss off the electric company? Use the money you save, go buy some solar panels, and screw the electric company!
Want to piss off the Arabs? Trade in that Ford Escalade and buy a Hyundai Elantra. Imported oil is our biggest deficit item.
Want to piss off a liberal? Have a job and earn a paycheck.
http://www.foxnews.com/scitech/2011...ht-bulbs-led-replacements-cost-50/?test=faces
The article says: “However, 60-watt bulbs are the big prize, since they're the most common. There are 425 million incandescent light bulbs in the 60-watt range in use in the U.S. today, said Zia Eftekhar, the head of Philips' North American lighting division. The energy savings that could be realized by replacing them with 10-watt LED bulbs is staggering.”
So, I decided to find out what “staggering” meant.
The difference between a 60 watt bulb and a 10 watt LED bulb is 50 watts (duh).
If you burned that bulb for 1 hour it would be 50 watts per hour saved; pretty simple.
For my comparisons below I am assuming that the bulbs will be burning 24 hours a day.
So, looking at the big picture I multiplied 50 watts x 425 million = 21, 250,000,000 watts saved per hour in the U.S.
To determine how many kilowatts that is I divided it by 1,000 = 21,250,000 kilowatts saved per hour in the U.S.
The average U.S. cost of 1 kilowatt of energy per hour is $.095 or, 9 ½ cents.
Multiply $.095 x 21,250,000 kilowatts = $2,018,750 in energy cost saved every hour.
Multiply that by 24 for a full day = $48,450,000 saved per day.
Multiply that by 365 for a full year = $17,684,250,000 – that’s $17.5 trillion dollars in energy cost saved in the U.S. in a year.
To figure out how much that will save the average household, the average household in the U.S. uses 10,656 kilowatt hours of electricity per year.
At $.095 cost per kilowatt, that means the average household pays $1,012.32 for electricity a year.
If 1 bulb saves 50 watts, and there are 8,760 hours in a year, that equates to 438,000 watts, or 438 kilowatts a year less power used.
$.095 x 438 = $41.61 saved in energy cost per year, per bulb.
So, replacing each 60-watt bulb will pay for itself in 1 year.
An LED light bulb will last between 25 and 30 years.
Over the entire life of the bulb, conservatively estimated at 24 years (minus the first year to recoup the cost), you will save $1,000 per bulb in energy costs - total.
That means the money saved over the lifespan of 1 bulb would pay for 1 year of electricity bills.
Now, go and figure out how many light bulbs you have in your house.
The average household has 45 light bulbs.
45 x $41.61 = $1,872.45 in savings a year if all the bulbs were replaced with LED bulbs.
That means that light bulbs account for 18% of your yearly energy bill.
That also means it will cost $1,800 to replace all of the light bulbs in your house with LED bulbs. Ahhhhhhhh!
One other interesting piece of knowledge; central air conditioning and refrigerators account for 15% of the yearly energy usage per home. That goes up when you have more than 1 refrigerator. So, if you wanted to save even more money on your energy bills; get rid of one of your refrigerators and cut back on the AC.
Want to piss off the electric company? Use the money you save, go buy some solar panels, and screw the electric company!
Want to piss off the Arabs? Trade in that Ford Escalade and buy a Hyundai Elantra. Imported oil is our biggest deficit item.
Want to piss off a liberal? Have a job and earn a paycheck.