It is a mistake to suppose that a more efficient lighting leads to a lower consumption.
According to data consultant IHS Market, LEDs use much less energy per lumen produced. LED lighting uses an average of 40% less energy than fluorescent lamps, and 80% less than incandescent lamps to produce the same amount of light.
“The use of LEDs to illuminate buildings and outdoor spaces reduced total carbon dioxide (CO2) emissions from lighting by an estimated 570 million tons in 2017. This reduction is approximately equivalent to the closure of 162 coal-fired power plants”, explains the consultant in a statement, explaining that they tracked the market share of all LED companies, suggesting that each LED sold is a direct substitute for an older and less efficient light.
Creating an elastic OLED
“The efficiency of LED lighting is essentially what makes it environmentally friendly.” Therefore, LED conversion is different from other measures, which require people to reduce consumption or make changes in lifestyle. LED component companies and lighting companies have transformed their industry, they are fighting climate change much more effectively than other industries, and they should be given credit for it, “says Jamie Fox, principal analyst at IHS Market.
The evidence of space says otherwise. Not all that glitters is gold. The consultant assumes that these companies are replacing inefficient lighting with LEDs but the evidence is quite clear: thanks to LED we are using more energy than ever and we continue to imagine new and ingenious ways to use LED lighting in places we have never seen before.
A study published in the journal Science Advances used photos of the space to show that we are using more lighting than ever. The artificially illuminated surface of the Earth at night increases in luminosity and extension. There is no doubt.
“Although a central objective of the lighting revolution is the reduction of energy consumption, the goal could be undermined by a rebound effect due to a greater use of energy in response to a lower cost of light”, explain the authors.
We are using more lighting than ever. “We used the first calibrated satellite radiometer designed for night lights to show that from 2012 to 2016, the artificially lit outdoor area of the Earth grew by 2.2% per year, with a total radiance growth of 1.8% per year, the continuously lit areas lit up at a rate of 2.2% per year, “the researchers continue.
Everything indicates a greater light pollution, with the corresponding negative consequences for flora, fauna and human welfare.
Lighting has become so economical, thanks to the low cost of energy and the efficiency of lighting that we are using much more throughout the world.
The reduction in the cost of energy and the environmental impact of lighting should have been accompanied by large absolute decreases in light emissions observable from space. But it’s not like that. We should not forget that even UNESCO formally declared that the Dark Sky is a Right of Future Generations. With the exponential increase of light thanks to the economic and efficient led we endanger that right to contemplate the starry sky as part of our natural heritage, in addition to the rest of parallel considerations.