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Plug Loads in Commercial Buildings
Andrew deCoriolis Director of Engagement
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What are plug loads?
Behavioral Institutional
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Plug load research overview
• 8 office buildings • 3 LEED certified • 15,000 - 500,000 ft2
• SF Bay Area, San Diego, Atlanta, Honolulu, Boulder, Reston
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Plug Loads Research Results
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Plug loads as a percent of total electricity use
0% 20% 40% 60% 80% 100%
CEUS 2006
CBECS 2003
50k sf floors
23k sf low-rise
24k sf low-rise
500k sf tower
15k sf floors
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SF office electricity demand (one week)
Lighting HVAC Plug Loads
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Google Confidential and Proprietary 7
Electricity savings by period of day
-10.0%
-17.4%
-0.9%
-20%
-15%
-10%
-5%
0%0
10
20
30
40
50
60
70
All times Off-peak(wknd + 8p-9a
week)
Peak (9a-8pweek)
% reduction
Aver
age
pow
er d
urin
g th
e pe
riod,
kW
Period of day Baseline weekCompetition
Results:
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Arup: Plug Load Study
May 2011 Andrew J Rhodes, Kyle Adams
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Small Power Density
Our office – Peak Plug loads 18kW
40,000 sqft = 0.45 w/sqft
Our clients –
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Small Power to the People
Which plug loads can we affect? • Computers • Monitors • Phone chargers • Personal hard drives • Conference rooms • Local AC equipment (Eek)
Which plug loads can we NOT affect? • Central copy services • Kitchen equipment • Servers and IT
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Google Confidential and Proprietary
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Google Confidential and Proprietary
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Google Confidential and Proprietary
Engagement
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Andrew DeCoriolis Director of Engagement 304 12th Street, Suite 3C Oakland, California 94607