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?