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Are we using less energy because of LED lighting, or more?

LEDs use a lot less energy per lumen produced; according to IHS Market, a consultancy, LED lighting uses an average of 40 percent less power than fluorescents, and 80 percent less than incandescents, to produce the same amount of light. They determined that "the use of LEDs to illuminate buildings and outdoor spaces reduced the total carbon dioxide (CO2) emissions of lighting by an estimated 570 million tons in 2017. This reduction is roughly equivalent to shutting down 162 coal-fired power plants." Well, maybe not. Because all IHS Markit appears to be doing is assuming that these companies are replacing inefficient lighting with LEDs. In fact, the evidence is pretty clear that thanks to LEDs we are using more energy than ever.

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