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http://needtoknow.nas.edu/energy/energy-efficiency/lighting/
One study estimates that by 2030, LED lighting will grow to 74% of lumen-hour sales in the United States. That is one reason that the EIA projects that residential energy use for lighting will decline more than 50%—in the range of 1,000 kilowatt hours per household …
https://www.energy.gov/energysaver/daylighting
Daylighting is the use of windows and skylights to bring sunlight into your home. Today's highly energy-efficient windows, as well as advances in lighting design, reduce the need for artificial lighting during daylight hours without causing heating or cooling problems. The best way to incorporate daylighting in your home depends on your climate and home's design.
https://www.energy.gov/energysaver/lighting-controls
Lighting Controls. Use lighting controls to automatically turn lights on and off as needed, and save energy. Of course you can save energy by turning off lights when they're not needed, but sometimes we forget or don't notice that we've left them on. The most common types of lighting controls include: Dimmers. Motion, occupancy, and photosensors.
https://www.energysaver.nsw.gov.au/sites/default/files/2021-07/Energysaver-energy-efficient-lighting-factsheet.pdf
Energy efficient lighting Every business uses lights, and for some businesses, lighting can account for up to 50% of energy use. There is a strong case to look at how your business can use lighting more efficiently, including upgrading to more energy efficient lighting. You could potentially reduce your lighting energy usage by up to 80%.
https://www.energy.gov/sites/prod/files/2013/05/f0/53827-3.pdf
An “energy efficiency measure” can be defined as a set of actions and equipment changes― ... typically after normal operating hours • Lighting occupancy sensors (OS) that turn lights on or off, based on space occupancy ... The following equations calculate primary energy savings for lighting control measures in commercial, industrial ...
https://www.sustainable.org.za/userfiles/lighting.pdf
y 80 to 90% more energy efficient compared to incandescent lights; on average 20% more efficient than fluorescent lights. y LEDs have a very long life span of claimed 30000 to 50000 hours.
https://www.connexusenergy.com/save-money-and-energy/save-energy/lighting
The higher the number, the brighter the light. Estimated Yearly Energy Cost – cost based on 3 hours per day and 11¢ per kWh. Life – bulb life in years based on 3 hours per day usage. Light Appearance – Color emitted on a scale of warm to cool, in degrees Kelvin. Energy Used – power consumption measured in wattage. The lower the number, the lower the power consumed.
https://www.gwhatchet.com/2020/03/09/energy-efficient-lights-conserve-18-million-kilowatt-hours-over-four-years/
News. By Lia DeGroot Mar 9, 2020 12:39 AM. Four years after officials first piloted LED lights in Amsterdam Hall, officials said GW has saved enough energy to power more than 2,000 homes for a year. University spokeswoman Crystal Nosal said the University’s use of energy-efficient lights has saved 18 million kilowatt-hours over the past four years, the amount of energy needed to power 2,150 …
https://www1.eere.energy.gov/buildings/publications/pdfs/ssl/2012_residential-lighting-study.pdf
Estimates of average HOU for CFL lamps exceeded that of incandescent and other lamp types, ranging between 1.8 and 2.1 hr per lamp, as compared to 1.0 and 1.3 hr per incandescent and approximately 1.5 hr (in most regions) for other kinds of lamps. Table 4.4 …
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