practices as countable entities - demand · 2015. 2. 11. · practices as countable entities time...
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PRACTICES AS COUNTABLE ENTITIES Time Use Surveys for a quantification of practices distributions and evolutions
METHOD WORKSHOP Social practices, energy demand and time use data –methodological lessons from DEMAND UCL-17/10/2014 Mathieu Durand-Daubin (EDF R&D-ECLEER) Ben Anderson (Southampton University)
Peak electricity demand
30
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90
00:30 03:00 05:30 08:00 10:30 13:00 15:30 18:00 20:30 23:00
Nat
iona
l ele
ctric
ity d
eman
d (G
W)
Time of the day
February MondayFebruary Sunday
France electricity consumption by time of the day on mondays and sundays of February 2010-RTE
Total France electricity consumption during Mondays and Sundays of February 2010 (RTE)
Electric demand split by usage from a sample of owner-occupied homes in England (2010-2011)
Eating practices in TUS ● Electric consumption underlying practices ● Practices as group of activities held together by
meanings and relying on competences and products (Shove & Pantzar, 2005) ● Eating relation to Time Southerton et al., 2011
●Eating meanings
Social Time
Temporal Rythms
Economy of Time
Ordering
Commensality
Eating
Eating practices in TUS ● General description of eating practices ● France (De Saint-Pol et al. 2013): 3 meals structure,
work/meal constraints, reception/TV relation to social satus, younger snacking…
● International comparisons: differences in the times and places of meals in relation with cultural aspects, work organisation and specific infrastructures…
● Looking for meanings: relation to the organisation of time, comensality, duty, satisfaction (Daniels et al. 2012)
Eating practices in TUS
Practice Hunting ● Definition of clearly delimited entities (Dinner)
based on:
● Describing their relation to other practices, needs
for energy, and peak demand ● Tracking alternative practices in the geographical
and social space
ACTIVITIES
TIME PLACE
PARTICIPANTS
TUS Data ● Representative activity diaries ●Two days by household (Week,Week-End) ● 10 minutes steps primary and secondary activities ● Waves every 10 years + individual/household level information
● UK MTUS/ONS 2005 : 4 854 Diaries ● Fr. EDT/INSEE 2010 : 27 900 Diaries
Eating practices definitions ● Dinner at Home with prior cooking ● Dinner at Home with No cooking ● Dinner outside (acquaintance or restaurant) ● No Dinner + Together/Appart + Guest/No Guest + TV/NoTV
Eating practices definitions 0% 20% 40% 60% 80% 100%
SkipDinner
Dinner
AtHome
Cooking
NoCooking
Outside
Friend&Fam
Restaurant
France
UK
Eating practices structure (Fr)
Eating practices Time profiles ● How eating practices fit into the day time structure
0%
10%
20%
30%
40%
50%
60%
70%
80%
90%
100%
12:0
0
12:3
0
13:0
0
13:3
0
14:0
0
14:3
0
15:0
0
15:3
0
16:0
0
16:3
0
17:0
0
17:3
0
18:0
0
18:3
0
19:0
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19:3
0
20:0
0
20:3
0
21:0
0
21:3
0
22:0
0
22:3
0
23:0
0
23:3
0
12:0
0
12:3
0
13:0
0
13:3
0
14:0
0
14:3
0
15:0
0
15:3
0
16:0
0
16:3
0
17:0
0
17:3
0
18:0
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18:3
0
19:0
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19:3
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20:0
0
20:3
0
21:0
0
21:3
0
22:0
0
22:3
0
23:0
0
23:3
0
work work
sleep sleep
Cooking
eat eat
TV TV
work
Travel Travel
No cooking
0
0,1
0,2
0,3
0,4
0,5
0,6
0,7
0,8
0,9
1
16:0
016
:30
17:0
017
:30
18:0
018
:30
19:0
019
:30
20:0
020
:30
21:0
021
:30
22:0
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:30
23:0
023
:30
23:5
916
:20
16:5
017
:20
17:5
018
:20
18:5
019
:20
19:5
020
:20
20:5
021
:20
21:5
022
:20
22:5
023
:20
23:5
0
Cooking NoCook
Eating practices Time profiles
work work sleep sleep
cook
eat eat
TV TV
Travel Travel
Cooking No cooking
Eating practices Time profiles
0
50
100
150
200
250
300
350
400No dinnerDinner with cookingDinner without cookingDinner out50
55
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65
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85
0
0,1
0,2
0,3
0,4
0,5
0,6
0,7
16:0
0
16:2
0
16:4
0
17:0
0
17:2
0
17:4
0
18:0
0
18:2
0
18:4
0
19:0
0
19:2
0
19:4
0
20:0
0
20:2
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20:4
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21:0
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21:2
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21:4
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22:0
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22:2
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22:4
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23:0
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23:2
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23:4
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23:5
9Cooking NoCooking EatOut NoDinner Monday Sunday
Electric consumption (GW) % of cases when cooking or eating happens at that time
Different practices different contribution to the peak
0102030405060708090
100
Flat Building (Centre)
Flat Building (Suburb)
Mixed Dense houses
Sparse houses
Restaurant
Friends&Family
NoCooking
Cooking
Practice Hunting: Days & Areas
0
10
20
30
40
50
60
70
Cooking
NoCookin
Friends&Family
Restaurant
SkipDinner0%
10%
20%
30%
40%
50%
60%
70%
0%
10%
20%
30%
40%
50%
60%
70%
80%
90%
100%
16-24 25-44 45-54 55-64 65-74 75+
% o
f the
eat
ing
prac
tice
by c
ateg
ory
0
10
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age<20 age20-40 age40-60 age60-80 age>80
% o
f the
eat
ing
prac
tice
by c
ateg
ory
Restaurant
Friends&Family
NoCooking
Cooking
Practice Hunting: Sociodemographics
0%
10%
20%
30%
40%
50%
60%
70%
1 (lowest 2 3 4 (highest
0
10
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70
Income1 Income2 Income3 Income4 Income5
Cooking
NoCooking
Friends&Family
EatOut
SkipDinner
Practice Hunting: Historical Trend
0%10%20%30%40%50%60%70%80%90%
100%
1986
2010
Conclusion ● Meanings :
Traces of commensality : participants, longer and later dinner, competition with TV
Eating out (as defined) has different meanings in
France : sharing with friends UK : convenient/efficient nutrition (no later or
longer meal, surrounded with much more typical home activity)
Conclusion Skipping dinner (as defined) has different meaning in:
France: work in the evening, dinner pushed before or after
UK: no dinner at all, replaced by social life Economy of time Clear competition between work and different time
intensive eating practices
Conclusion ● Material : Little information at the activity level: place, transport
mode More information at the individual/household level Need to link with dedicated surveys associating
diaries with appliance usage : high difficulty ● Competences : Directly related to individuals
Next steps ● Direct link between activities and related appliance
usage and electricity consumption ● Hunting practices in the past TUS waves (10 years)
to identify how practices spread, shrink or change
Limits ● Lack of direct information on meanings and devices ● Two days not enough to identify patterns and regularity ● Not so different from usual descriptive analyses
