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Scouting for Residential Electricity Savings Scott Pigg, Principal - - PDF document

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Scouting for Residential Electricity Savings Scott Pigg, Principal Project Manager Ingo Bensch, Senior Project Manager January 27, 2010 Accelerating Energy Efficiency Webinar Series www.ecw.org/webinarseries On-demand webcasts: The Silver

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Scouting for Residential Electricity Savings

Scott Pigg, Principal Project Manager Ingo Bensch, Senior Project Manager January 27, 2010

Accelerating Energy Efficiency Webinar Series

On-demand webcasts:

  • The Silver Lining in Climate Survey Results: Refining the

Design of Energy Efficiency Programs and Climate Policy

  • The financial effect of energy efficiency on utilities: a

closer look at decoupling

  • Energy efficiency’s great potential
  • How risk and uncertainty affect energy efficiency

decisions: a real options analysis

www.ecw.org/webinarseries

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SLIDE 2

What’s on your screen?

  • Ask a question via chat
  • Bios, description

Submit your feedback, additional resources

  • Get help

Scott Pigg

Technology Guy

(but likes people)

His passions: home energy use, guitar, sailing researcher at the Energy Center of Wisconsin M.S. University of Wisconsin Land Resources – Energy Analysis and Policy Agricultural Engineering B.S. University of Wisconsin Agricultural Engineering Researching residential energy use for 23 years

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SLIDE 3

Ingo Bensch

People Guy

(but likes technology)

His passions: behavioral research, homeschooling, chocolate researcher at the Energy Center of Wisconsin previously program evaluator for Wisconsin legislature M.P.A. Indiana University Environmental and Natural Resources Management B.A.S. Stanford University Economics & Science-Technology Studies Human Dimensions panel leader for the American Council for an Energy Efficient Economy Summer Study (2008 and 2010)

Acknowledgements

Our funding

Minnesota Department of Commerce, Office of

Energy Security

Minnesota Power Company

Thank you!

Our team

Ingo and Scott Karen Koski – Energy Center of Wisconsin Rana Belshe – Conservation Connection Consulting

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SLIDE 4

Study Objectives

Characterize electricity use by plug-in

devices in homes

Scout for energy-saving opportunities

among existing plug-in devices that people could and would obtain at low or no cost

Link opportunities to program approaches

Plug-In Devices

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SLIDE 5

courtesy of DOE/NREL, credit - DOE courtesy of DOE/NREL, credit - D&R Int., LTD

Not Included In a Nutshell…

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SLIDE 6
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SLIDE 7
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SLIDE 8

Now the details…

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SLIDE 9

Study Approach

Site Visits

  • Full inventory of devices
  • Metering (5-30 devices/home, 1 mo.)
  • Household interview

Mailed Appliance Survey

  • Computer & peripheral details
  • TV & peripheral details
  • Saturation for other plug-in devices

Telephone Survey

  • Demographics
  • Attitudes
  • TV & Computer counts

1,013 homes 260 50

We metered… …705 (of 1,612) devices in 50 homes… …for one month… …at 6-minute intervals

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SLIDE 10
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SLIDE 11

Low/No-Cost Savings Strategies

Considered 5 strategies

Enable computer power management Manually unplug Manually turn off Use a timer Use a “smart” power strip

Looked for opportunities with 25+ kWh/yr

savings

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SLIDE 12
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SLIDE 13

Technical savings x Household interest (and habits) = Behaviorally-adjusted savings

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SLIDE 14

Savings Opportunities by Home

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SLIDE 15

Enable Computer Power Management Desktop computer use categories

Always on (20% of computers) Long Idle Periods (40%) Off When Not in Use (25%) Not Used Much (15%)

(based on 42 of 47 desktop computers)

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SLIDE 16

Occupancy Monitor Computer

Site 24 Watts

90 watts Day 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26

Sleep/hibernate Enabled?

Yes No Yes No Computer Monitor

n = 32 desktop computers

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SLIDE 17

100w 100w

courtesy of DOE/NREL, credit - DOE

Power management enabled for monitor only Power management enabled for monitor and computer Power management enabled for monitor only Power management enabled for monitor and computer

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SLIDE 18

70w 3w Power management enabled for monitor only Power management enabled for monitor and computer

Desktop Usage and Estimated Savings

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SLIDE 19

Willingness to implement

0% 20% 40% 60% 80% 100% low use (n=7)

  • ff when not in use (n=11)

long idle periods (n=14) always on (n=10) Low Medium Medium High High High (enabled) High (enabled) Enabled Enabled No opportunity identified No opportunity identified enabled during interview!

Manually Unplug

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SLIDE 20

Mini Stereos

Site 5

23 watts when

not in use

used 3x in a

month for 2 hours total

200 kwh/yr

savings if unplugged when not in use

Older TVs

Site 6

7 watts when

turned off

used about 2

hours/day

58 kWh/yr

savings if unplugged when not in use

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SLIDE 21

Printers

Site 31

6 watts

standby

used 5x in a

month for 1 hour total

43 kwh/yr

savings if unplugged when not in use

(sorry, no photo of this printer)

Lonely TV Peripherals

Site 7

DVD/VCR player 7 watts when

turned off

not used in a

month

59 kwh/yr

savings if unplugged when not in use

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SLIDE 22

Turn Off TV routinely left on

Site 35

42” LCD TV

  • n overnight

about 1/3 of the time

41 kwh/yr

savings if turned off from midnight to 6 am

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Watts

11 12 13 14 15 16 17 18 19 20 21 22 23 24 7 8 9 10 6 Day 1 2 3 4 5 190 watts 75 watts

LCD TV with automatic brightness control (Site 35)

Portable HVAC out of control

Site 24

space heater

in basement turned on by guest, and found running in late May

200

kWh/month usage

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SLIDE 24

Ad hoc “unplug” opportunities

Site 20

shoe dryer

left running year-round

uses ~700

kWh/yr

Use a Timer

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SLIDE 25

Set-top boxes

Site 31

Satellite box

(no DVR)

TV not used

between midnight and 6am

timer savings:

85 kWh/yr

Use a Smart Power Strip

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SLIDE 26

TV Peripherals

Site 6

DVD player left

  • n several

times

VCR also

present (not used)

55 kWh/yr

savings

Watts

Day 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28

DVD player (Site 6)

10 Watts

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SLIDE 27

Enable power management Unplug Turn off High savings per opp. Use a smart power strip High incidence High willingness Use a timer One- time solution

Program Strategies

Common themes, but differences across

  • pportunities

Need to address existing barriers Range from low touch to high touch Promoting power management should be a

high priority

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SLIDE 28

Power Management

N

  • t

a w a r e

  • f

f e a t u r e D

  • n

’ t k n

  • w

h

  • w

t

  • d
  • D
  • n

’ t k n

  • w

h

  • w

m u c h c

  • m

p u t e r s u s e

Power Management

N

  • t

a w a r e

  • f

f e a t u r e D

  • n

’ t k n

  • w

h

  • w

t

  • d
  • D
  • n

’ t k n

  • w

h

  • w

m u c h c

  • m

p u t e r s u s e Raise awareness

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SLIDE 29

Power Management

N

  • t

a w a r e

  • f

f e a t u r e D

  • n

’ t k n

  • w

h

  • w

t

  • d
  • D
  • n

’ t k n

  • w

h

  • w

m u c h c

  • m

p u t e r s u s e Raise awareness Show how to implement

Power Management

Program Opportunity: Mass Education

N

  • t

a w a r e

  • f

f e a t u r e D

  • n

’ t k n

  • w

h

  • w

t

  • d
  • D
  • n

’ t k n

  • w

h

  • w

m u c h c

  • m

p u t e r s u s e Raise awareness Show how to implement

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SLIDE 30

How we communicated about opportunities

It looks like your computer uses more

electricity than any other device we metered.

Your computer uses half of its energy

when you aren’t even using it.

* This kind of messaging resonated across all opportunities.

What we did not say...

You could save 20 dollars per year by

turning off your computer when not using it or enabling power management.

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SLIDE 31

Resources to help interested households

Climate Savers Computing Google Gadget - Energy Saver Programs could build on this

(Note: Instructions vary by operating system)

Unplug

Program Opportunity: Education plus providing technological aides

H a s s l e D

  • n

’ t k n

  • w

w h i c h d e v i c e s m a k e a d i f f e r e n c e Guidance on major culprits Enable hhld detective work Suggest alternatives to physical unplugging Provide/subsidize power strips

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SLIDE 32

Turn off

Program Opportunity: Education plus providing technological aides (or appeals to values)

H a b i t s a r e h a r d t

  • f
  • r

m ( a n d b r e a k ) D

  • n

’ t k n

  • w

w h i c h d e v i c e s m a k e a d i f f e r e n c e Guidance on major culprits Enable hhld detective work C

  • n

v e n i e n c e (difficult to address) Feedback to the motivated

Timers / Smart Power Strips

Program Opportunity: Providing technological aides plus education

H a b i t s a r e h a r d t

  • f
  • r

m ( a n d b r e a k ) D

  • n

’ t k n

  • w

w h i c h d e v i c e s m a k e a d i f f e r e n c e Guidance on major culprits Usage guidance C

  • n

v e n i e n c e Suggest timers and smart power strips as solutions Provide / subsidize M a y n

  • t

u s e e f f e c t i v e l y

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SLIDE 33

Program Strategies Summary

Educate / inform

focus willing hhlds on the major culprits &

  • pportunities

raise awareness of power management provide tips on how to do conveniently

Enable hhld investigation Provide technological aides Piggyback onto ongoing home visits

Share your feedback

We are very interested in your feedback Visit the “links” icon to take a brief online survey

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SLIDE 34

Contact Information for Follow-up Questions:

Scott Pigg Energy Center of Wisconsin spigg@ecw.org 608-238-8276 x138

Project website: www.ecw.org/mnenergystudy

Questions about plug load results?

Ingo Bensch Energy Center of Wisconsin ibensch@ecw.org 608-238-8276 x145

End of Webinar

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