Financial benefits resulting from the use of LED high-bay industrial lamps

Financial benefits resulting from the use of LED high-bay industrial lamps

Replacing traditional warehouse lighting with LEDs is not an easy financial undertaking with a certain risk. The key factor affecting the assessment of the exchange profitability is the payback time of the investment and the potential subsequent profit resulting from the reduced consumption of electricity for lighting. A well-documented study carried out by the American energy company PG & E, summarized in a comprehensive report, showed that the replacement of traditional metal halogen lamps with high-bay LED lamps resulted in 50% energy savings.
In addition, the use of a control system that uses motion sensors and light intensity sensors has enabled - with the most "aggressive" lighting control - an additional saving of 43%. As a result, 93 percent energy savings were achieved and the calculated return on investment was 3.5 years.
There are a few things to look out for. The said report was created in 2013. Considering the significant drop in the prices of LED light sources and LED lighting fixtures that took place in the last three years with a simultaneous increase in their energy efficiency, it should be assumed that today the return on investment time would be much shorter. Its amount, however, requires separate calculations. An additional energy saving of 43% was obtained using "aggressive" control, i.e. the times were minimized, after which the light weakened or turned off in the absence of a signal from the motion sensor. With aggressive control in some "unused" zones, the light was switched off completely. Not every warehouse and the nature of the work done in it allows "aggressive" control of the lighting. It is assumed, however, that even in a very mobile warehouse, the use of less aggressive control leads to an additional 20-25% energy savings, i.e. a total saving (in conjunction with savings resulting from the use of LED lamps) can reach 70-75%.

The risk associated with the replacement of lighting on LED high bay

The cited report refers to the reality of the American market, which is more developed than the Polish market. There are skillfully developed systemic mechanisms for controlling the quality of lighting fixtures. Products placed on the market (including those imported from China) pass through a dense sieve of government-stimulated programs to study the quality of lighting products (a good example of this is the Energy Lighting Facts program of the Department of Energy). The research laboratories participating in these programs issue widely recognized and recognized certificates to those products that meet the relevant quality requirements. This situation is conducive to fair competition, contributing to the elimination of companies introducing LED lighting with overstated parameters and low quality to trade. Customers gain from it, The Polish lighting market has not yet developed similar mechanisms. In addition to several reputable brands (which offer at least good quality of their products), the customer is basically not able to assess the quality of luminaires offered and their comparisons - which is of great importance when planning expensive replacement investment for high-bay LED lighting fixtures. On the Polish market, there is a large number of weak - as well as fatal - products whose light quality, electrical parameters and service life leave much to be desired. Such luminaires can emit nuisance, shimmering light with a low color rendering index. Along with the use of "no-name" LED chips, power supplies of the simplest design are used without the appropriate protection and low power factor, which means that the luminaire will generate significant reactive power. As a result, our electricity charges may rise paradox. So far, the basic principle that should be guided by the potential buyer of high-bay LED luminaires of unknown brand, in addition to controlling the basic parameters (power, luminous flux, power factor), is having a warranty period of at least as long as reliably calculated return time of the investment. Otherwise, it is not even worth considering buying such products - there is a good chance that the investment instead of saving will bring losses. Another potential effect will be the abandonment to technology, which can be a skillfully applied element that differentiates effective and innovative enterprises from ineffective ones due to the inability to use new technologies to reduce the costs of their operations.

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