There are many low hanging-fruits when it comes to energy efficiency in buildings. The lowest hanging-fruit is implementing LED lighting retrofits. LEDs are replacing most types of lights whether they are fluorescent, high-intensity discharge or standard incandescent lamps. This paper presents the findings of a twenty-year tracking study of lighting savings and power density in the residential sector. In this paper, we share guidelines that will help you avoid common mistakes and capitalize on lessons learned. The paper presents an example of quantified benefits of energy efficient lighting, which is extremely important to inform the decision making of public policy makers, investors and building occupants.
According to the study findings 2 common mistakes with LEDs retrofits can be avoided:
#1: Test Sample Fixtures
LEDs have a higher efficacy (lumens/watt) than traditional lighting systems. You don’t need to match lumens to get the same lighting level within a room. In addition, LEDs are generally pointed down, giving them better targeting, i.e., increasing the coefficient of utilization. As a consequence, more of the lumens exiting the lamp will actually reach the target.
#2: Buy Quality Products
In recent years, LEDs have improved significantly however, in developing countries and in particular in the MENA region there are premature failures of LEDs due to inadequate quality of fixtures. Therefore, do not buy any LED that does not have at least a 5-year, non-prorated guarantee. Buy from a company/product line that is likely to be in existence 5 years from now. Look for the right credentials when buying LEDs. You need to be sure that the bulbs have passed some standardized performance tests.
Finally, it is highly likely that the LEDs you are installing now will be obsolete and unavailable in 10 years, due to the rapid pace of technology advancements. You may need to start over with a different lighting technology and a whole new project.
I hope these tips will help you avoid some mistakes. If you are interested to read the paper, you can find it on this link here.