CALCULATION OF MERCHANTABILITY LED-EL-01



Comparative approximate calculation of the payback period of office lightings based on LEDs and fluorescent lamps


        LED lighting LED-EL-01, an analogue of recessed fluorescent lamp for illumination of public buildings 4x18, 595h595 (consumption 28W)
Number of years count (pcs.) yearly consumption(24 hours/ day),kW price for 1 kW, UAH. (yearly +10% ) consumption bill, UAH price of a lighting+ bulbs UAH cost of bulbs replacement LED-EL-01 
 1     1,00     245,28     1,05     257,54     1 866,00     -     2 123,54   
 2     1,00     245,28     1,16     283,30     -     -     2 406,84   
 3     1,00     245,28     1,27     311,63     -     -     2 718,47   
 4     1,00     245,28     1,40     342,79     -     -     3 061,26   
 5     1,00     245,28     1,54     377,07     -     -     3 438,33   
 6     1,00     245,28     1,69     414,78     -     -     3 853,11   
 7     1,00     245,28     1,86     456,25     -     -     4 309,36   
 8     1,00     245,28     2,05     501,88     -     -     4 811,24   
 9     1,00     245,28     2,25     552,07     -     -     5 363,31   
 10     1,00     245,28     2,48     607,28     -     -     5 970,59   


Fluorescent lighting of raster type recessed fluorescent lamp for illumination of public buildings 4x18, 595h595 (consumption 85,4W)
Number of years count (pcs.) yearly consumption(24 hours/ day),kW price for 1 kW, UAH. (yearly +10% ) consumption bill, UAH price of a lighting+ bulbs UAH cost of bulbs replacement FL 4х18
 1     1,00     748,11     1,05     785,52     280,00       1 065,52   
 2     1,00     748,11     1,16     864,07         1 929,58   
 3     1,00     748,11     1,27     950,47     80,00       2 960,06   
 4     1,00     748,11     1,40     1 045,52         4 005,58   
 5     1,00     748,11     1,54     1 150,07     80,00       5 235,65   
 6     1,00     748,11     1,69     1 265,08         6 500,73   
 7     1,00     748,11     1,86     1 391,59     80,00       7 972,32   
 8     1,00     748,11     2,05     1 530,75         9 503,07   
 9     1,00     748,11     2,25     1 683,82     80,00       11 266,89   
 10     1,00     748,11     2,48     1 852,20         13 119,09   
 

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     This simplified calculation shows that the payback period of the LED lighting LED-EL-01 compared to the same lamp-based FL (fluorescent lamps) is up to up to 2.5 years. The calculation does not take into account the average cost of the f lamp replacement, it also does not considered the possibility of using a smaller cross-section of the cable and therefore cost of savings.