Technology and knowledge
Savings generated on lighting replacement
Thanks to low energy consumption, LED lighting generates very large savings, which we often do not realize. LED technology is the most financially efficient light source, because a small LED generates lights with power corresponding to the very strong light bulbs of old type. Therefore in practice, LED bulb 3.5W shines as brightly as the classic light bulb 50W. Energy consumption is more than 10 times smaller, consequently, charges for electricity could decrease by up to 80%! Below we have presented how the replacement of LED lighting reduces electricity bills in our homes or businesses. The table below shows a sample calculation of savings when replacing 50W halogen bulbs for Greenie 3.5W LEDs, assuming that energy rate is PLN 0.55 It is also worth noting that the Greenie products are subject to a minimum 2-year warranty, and their purchase generates return on investment already during the warranty period.LED bulbs give in a few years savings counted in thousands PLN
| Tradycyjna żarówka halogenowa 50W | Greenie żarówka LED 3.5W | |
| Moc, pobór prądu | 50W | 3.5W |
| Koszt zakupu 1 szt. | 1,50zł | 13,63zł |
| Średni dzienny czas świecenia | 5 godzin | |
| Roczny czas świecenia | 5h x 365 dni = 1825 godzin | |
| Roczne zużycie energii przez 1 żarówkę | 1825h x 50W = 91,25kWh | 1825h x 4W = 6,3875kWh |
| Roczny koszt zużytej energii | 50,18zł | 3,51zł |
| Roczna oszczędność z wymiany JEDNEJ żarówki (różnica w zużyciu żarówki tradycyjnej oraz LED) | 50,18zł – 3,51zł = 46,67zł | |
| Zwrot kosztów zakupu | 13,63zł/46,67zł = 0,29 roku = 3.5 miesiąca | |
| Gwarancja: | – | 2 lata |
When it comes to industrial or street lighting – the situation is as in the following table. In this case the energy savings are very large, because Greenie LED lights requires no ballast, reactors and other power consuming devices of this type for proper operation. The calculations also assumed prices for energy at the level of PLN 0.55.
| Żarówka sodowa 250W | Greenie LED żarówka AluCorn 86W | |
| Moc, pobór prądu | 250W + 50W balast = 300W | 86W |
| Koszt zakupu 1 szt. | 70zł | 750zł |
| Średni dzienny czas świecenia | 12 godzin | |
| Roczny czas świecenia | 12h x 365 dni = 4380 godzin | |
| Roczne zużycie energii przez 1 żarówkę | 4380h x 300W = 1314kWh | 4380h x 86W = 376,68kWh |
| Roczny koszt zużytej energii | 722,70zł | 207,17zł |
| Roczna oszczędność z wymiany JEDNEJ żarówki (różnica w zużyciu żarówki tradycyjnej oraz LED) | 722,70zł – 207,17zł = 515,53zł | |
| Zwrot kosztów zakupu | 750zł/515,53zł = 1,45 = 17 miesięcy | |
| Gwarancja: | 2 lata | 3 lata |
As you can see from the above, purely mathematical calculation, the savings generated on using LED bulbs are very high. Please also note that these calculations concern one bulb – when replacing the entire lighting at home or office, savings will be much greater. For example, in case of replacing 10 pieces of industrial sodium bulbs to LEDs we receive annual savings of PLN 5,155.30
Writing about profits, it should be mentioned that it is not just about economics – it’s also about using better and cheaper technology that positively affects the environment. LED lamps – due to low demand for electricity – contribute to reducing the production of this energy, which directly affects the reduction of the emission of environmentally harmful carbon dioxide. LED lamps – contrary to traditional light sources – are completely free from substances harmful to life and health such as mercury, they do not emit UV and IR. LED technology is thus leading direction of energy development in the field of energy consumption reduction.
