plug loads in commercial buildings - web.stanford.edu filegoogle confidential and proprietary ....
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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
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
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:
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
Andrew DeCoriolis Director of Engagement 304 12th Street, Suite 3C Oakland, California 94607