LED bulbs have a reputation for being expensive. Just look at the prices in any store or on any website, to realize that LED bulbs are more expensive than their fluorescent or halogenated sisters. But, they are also presented as the illumination of the future because they are also the most economical to use. Let’s try to unravel the complex skein of the reality of the price of an LED bulb.
The Price Of A LED Bulb But Not That The Price …
To limit oneself to comparing only prices would be a mistake. It’s like comparing the rates of a fast food to those of a classic restaurant.The first is of course less expensive but the food and service are not the same as in the second!
For example, if you compare the life of the different bulbs, the LED will win any category of the competition:
Halogen incandescent bulb -> 2000 hours
Compact fluorescent bulb -> 5000 to 15,000 hours
LED bulb -> 20,000 to 50,000 hours
If you take 30,000 hours with an average usage of 4 hours per day, your LED bulb will keep you company for 20 years!
Similarly, for the consumption of electricity, the LED bulb easily obtains an A +++. For equal light output, it consumes 90% less than a halogen bulb and 60% less than a compact fluorescent bulb.Knowing that the LED lighting represents on average 15 to 20% of your annual electricity bill, the purchase of low consumption light bulb is to be considered as an investment.
How To Calculate The Profitability Of An LED Lamp?
In fact these are the savings you are going to make on your power consumption and the longevity of several years of the LED bulb which makes it interesting even if to buy it and more expensive. A simple calculation will allow you to calculate the profitability of your bulbs:
Watt consumption of the bulb
X by the number of hours of use per day
X by the number of days of use per year
= Number of Watt per year
Divide this number by 1000 to obtain the number of kilo Watt per hour (KWh)
X by your tariff EDF or other electricity supplier
= cost of your bulb per year
Let’s compare, for example, the annual cost of an LED bulb and a halogen bulb of the same brightness. The indication of their consumption appears on their respective packaging.
5W LED Bulb
X 5 hours of average use per day
X 365 days
= 9 125 Watt per year, that is 9.125 KWh
X 0.1372 € TTC ( EDF tariff on 01/02/2014 )
= 1.251 € per year
50 W halogen bulb
X 5 hours average use per day
X 365 days
= 91 250 Watt per year, that is
91.25 KWh X 0.1372 € TTC ( EDF tariff on 01/02/2014 )
= 12.52 € per year
For the same luminosity, you will save more than 11 € on your annual electricity bill. Depending on the purchase price of your LED bulb, in 1 or 2 years you will have profitable your acquisition.
The savings achieved by replacing a compact fluorescent bulb with an LED bulb is less because the former is already less greedy in energy.On the other hand, it is more polluting.
Attention : You may be tempted to take advantage of the qualities of LEDs without wanting to cover their cost. Beware of bulbs that are very inexpensive because longevity may not be at the rendezvous. The quality of an LED depends on the quality of its components. Under these robust airs, it also has its fragilities … and its zones of shadows.
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