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| DOE says that LED lighting will slash energy usage by 5.1 quads in 2035 |
2017-02-01 |
The US Department of Energy (DOE) has published the 2016 edition of its biennial report entitled "Energy savings forecast of solid-state lighting in general illumination applications." The new report extends the projections on energy savings due to LED use in general illumination through 2035, whereas the prior report covered the period through 2030. Data in the 2016 report is based on a new research model and states that cumulative energy savings due directly to a solid-state lighting (SSL) transition in the US lighting sector will total 62 quads (quadrillion BTUs) between 2015 and 2035 relative to a scenario in which no LED lighting had been installed.
The DOE said the new model is more accurate than prior models in addition to extending the projection period. With more years of LED adoption behind us, the new research is more granular and finely calibrated according to the agency. The aforementioned cumulative savings is said to be equivalent to $630 billion in avoided energy costs.
The prior forecast linked above had projected that in 2030 LEDs would deliver an annual energy savings of 4.5 quads. Now the agency projects that by 2035 the SSL transition will save 5.1 quads. That projection essentially represents a reduction of energy use by 75% — estimated as the total energy used by 45 million US homes today.
The granularity of the new data model has allowed the DOE to pinpoint the applications and usage scenarios where LED lighting will make the biggest impact. Commercial applications will represent 2.65 quads and residential 1.14 quads. Across different applications the use of autonomous and programmatic controls will account for 2.28 quads in savings.
The granularity also extends to types of lighting installed. Linear and low/high-bay fixtures, the mainstay of commercial lighting, will be product areas that deliver the greatest benefit. The residential transition to LED A-lamps, and to a lesser extent directional lamps, will deliver the second largest benefit and ultimately the lowest projected actual energy use in 2035 of 0.08 quads.
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