how many engineers does it take to change a lightbulb?
TRANSCRIPT
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How many engineers does it
take to change a lightbulb?
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Answer: Depends on what type
of lightbulb you use
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https://www.boma.org/SiteCollectionDocuments/Acuity/Control%20Lig
hting%20Systems%20to%20Boost%20Energy%20Savings_BOMA.pdf
Commercial businesses spend
≈$2.29/ft2 per year
on energy cost
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https://www.boma.org/SiteCollectionDocuments/Acuity/Control%20Lig
hting%20Systems%20to%20Boost%20Energy%20Savings_BOMA.pdf
Estimated Annual Energy Cost
Monthly Electric costs: $2,432
Sq ft of Business: 15,000
Annual Energy cost per ft2 : $2.29
Total Annual Energy Cost: $34,332
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lighting
38%of a building’s electricity draw is
https://www.boma.org/SiteCollectionDocuments/Acuity/Control%20Lig
hting%20Systems%20to%20Boost%20Energy%20Savings_BOMA.pdf
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How much is lighting costing your facility?
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LEDs vs. Conventional bulbs
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https://www.consumerenergysolutions.com
/save-big-on-maintenance-costs-by-
retrofitting-your-business-lighting-to-led/
LED bulbs use50% - 90%less electricitythan traditional fluorescent bulbs
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LED bulb lasts
Incandescent bulb
lasts 1,000 hours
> 50,000 hours
https://blog.lsgc.com/how-leds-can-
reduce-labor-and-maintenance-costs/
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http://www.topbulb.com/blog/tips-fac ility-
managers-evaluating-transition-led-lighting/
LED lighting can reduce facility electric costs by
20-50% based on which light source is being
replaced
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Maintenance expenses in lighting
manifest in 3 areas:
üCost of replacement lamps and fixtures
üCost of labor to replace lamps
üWarranty protection and duration
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Conventional bulbs are changed
50xbefore LEDs are changed once
https://blog.lsgc.com/how-leds-can-reduce-
labor-and-maintenance-costs/
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Average light bulb changing time ≈15 mins
Labor cost ≈ $12/hour
Replacing 1 led bulb ≈ $3.00
Conventional bulbs are
changed 50x before LEDs are
changed once.
(50 x $3.00)= $150 for 1
conventional bulb
https://blog.lsgc.com/how-leds-can-
reduce-labor-and-maintenance-costs/
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LED in Hospitality
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The 47,000 hotels and motels in the United States
spend about six percent of their operating costs on
energy each year
Source: https://www.ahla.com/content.aspx?id=36332
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Source: EnergyStar
http://www.energystar.gov/bui ldings/index.cfm
A 10% reduction in energy consumption has the same financial
effect as increasing the average daily room rate by $0.62 in
limited-service hotels and by $1.35 in full-service hotels
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Source: https://www.nationalgridus.com/non_html/shared_energyeff_hotels.pdf
Lighting retrofits reduce electricity by 50%
and cut cooling requirements by 10-20 %
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A Las Vegas hotel replaced inefficient metal halide lights
on the building’s facade with LED lighting; this saved the
facility $41,000/annually
http://lumenistics.com/led-lighting-helps-save-on-
operating-and-maintenance-costs/
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A Wisconsin casino saved over $221,000 in electric costs the
first year LEDs were installed, and was projected to save
$120,000 in maintenance costs over the next six years
http://lumenistics.com/led-lighting-helps-save-on-
operating-and-maintenance-costs/
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Thank you!