remodece 3rd project meeting 29-30 january 2007, prague first results of the survey on electricity...
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Remodece 3rd Project Meeting
29-30 January 2007, Prague
First results of the survey on electricity consumption in Germany
Barbara Schlomann, Fraunhofer ISI
Realization of the survey
Oct. 2006: Translation of the common REMODECE questionnaire
Nov. 2006: Distribution of the questionnaire by mail to 700 representative German households from the GfK household panel; 545 questionnaires returned (response rate: 78 %)
Dec. 2006: Survey results available
1. Raw data delivered by GfK in ASCII format, based on the structure of the German questionnaire.
2. First analysis of the raw data in order to produce summary results for all questions in order to fill-in the summary results, we used the original structure of the questions in the common questionnaire.
Survey: general impression
High response rate (78 %). But: use of an existing household panel.
On the whole: Good quality of the answers, high percentage could answer most of the questions.
"Problematic" questions:
- A4: Electricity consumption in Euro and kWh not plausible values have not been taken into account ( > 400 usable questionnaires)
- Energy efficiency class of electrical appliances: only 30 – 35 % could answer.
- I1/2 General questions on the attitude towards energy saving: Way of ranking seemed to be very difficult to understand for many households only "right" ranking was taken into account (57% of all answers). Remark on a questionnaire: "silly question"
Average electricity consumption per household per year
In euros (425 valid answers) 620In kWh (403 valid answers) 3474
A4. What was your electricity consumption invoiced by your electricity company last year?
average
Age structure of electrical household appliances
0%10%20%30%40%50%60%70%80%90%
100%
Refrig
erat
or
Refrig
erat
or w
ith fr
eeze
r
Freez
er
Dishwas
her
Tumble
Dry
er
Was
hing m
achin
e
5 or less 6-10 years more than 10
Energy efficiency classes (only 1st appliance)
0% 20% 40% 60% 80% 100%
Washing machine
Tumble dryer
Dishwasher
Refrigerator
Refrigerator with freezer
Freezer
A+ A++ A B C D not known
Office appliances: state when device is not used
0%10%20%30%40%50%60%70%80%90%
100%
Deskt
op
Mon
itor
Lapt
op
Printe
r
Mul
tifunc
tion
prin
ter
Scann
er
Copie
rFax
Mod
em
Speak
ers
Route
r/hub
onstandbyturned-off
Poor knowledge on
E7. What do you think the Energy Star label refers to?
Electromagnetic compatibility 3%Use of recycable material 1%Electricity saving handling 10%Low energy consumption 22%Don't know 46%
E8. When you buy an office appliance, do you choose one with Energy Star?
Always 11%Sometimes 14%Never 28%Don't know 48%
Home entertainment: state when device is not used
0%10%20%30%40%50%60%70%80%90%
100%
TV
Home ci
nema
VHS reco
rder
/pla
yer
DVD reco
rder/p
layer
Hi-Fi
Satellit
e/cable
set to
p box
Hard d
isc
Video g
ame
Turned-off with on/off button Turned of with remote controlStandby On
Lighting
0.0
2.0
4.0
6.0
8.0
10.0
12.0
14.0
Incandescent Low wattagehalogen
High wattagehalogen(>70W)
Fluorescent CompactFluorescent
Nu
mb
er
of
lam
ps
Living room Bed rooms KitchenBath rooms Hallways OutdoorsOther rooms
Average number of lamps in all rooms: 25 (14% energy saving lamps)
Criteria for the purchase of a new domestic appliance(average without "other", only "right" rankings)
functionality
quality
stability
brand
recommendation
Price 2,2Design/style 4,5External dimensions 4,0Capacity 3,8Electricity consumption 2,7Ease of use 3,7Other
1 = more important
7 = not important
Information sources on electricity savings
TV 76%Magazine/Newspaper 80%School 5%Internet 18%Radio 34%Conference 8%Work 6%Friends/family 34%Other 23%
Other sources:• energy utilties (very important in Germany)• education • shops etc. (when buying the appliance)
Open questions
1. Household details (module A): definitions?
Education level: rather broad definition most of the households in Germany in the two highest groups; university + college degree?
Type of building: single = only 1-family houses or 1 / 2 family houses?
2. Homegenious presentation of the results? Our choice:
in most cases: results presented in % of valid answers
in some cases: average values (consumption in €/kWh; no. of lamps, ranking questions)
3. Which data are needed for the common analysis of the survey results?