A Systems View Across Time and Space
Table 1 Model specification and variable definitions
From: Determinants of household electricity consumption in Greece: a statistical analysis
Variable | Type | Unit | Variable | Type | Unit |
|---|---|---|---|---|---|
Ave. consumption | Continuous | kWh/month | Time spend | Ordinal | |
Square meters area | Continuous | m2 | Lights: | Cat. nominal | |
Occupants | Discrete | Never | Ref. category | ||
Family type: | Cat. nominal | Often | Dummy | ||
Young people | Ref. category | Sometimes | Dummy | ||
Family with older children | Dummy | Heating type: | Cat. nominal | ||
Family with young children | Dummy | Central boiler | Ref. category | ||
Older people | Dummy | Individual cent. boiler | Dummy | ||
Age | Cat. nominal | Individual local units | Dummy | ||
Gender: | Categorical | No heating | Dummy | ||
Female | Ref. category | Secondary heater: | Cat. nominal | ||
Male | Dummy | No | Ref. category | ||
Marital status: | Cat. nominal | Yes | Dummy | ||
Divorced | Ref. category | Heating hours | Ordinal | ||
Married | Dummy | Cooling type: | Cat. nominal | ||
Single | Dummy | No air-conditioning | Ref. category | ||
Widowed | Dummy | Have air-conditioning | Dummy | ||
Occupants’ work | Discrete | Cooling hours: | Ordinal | ||
Income | Ordinal | €/year | Summer holidays: | Cat. nominal | |
Educational level | Ordinal | Other | Ref. category | ||
House status: | Cat. nominal | I don’t take sum. hol. | Dummy | ||
Rent | Ref. category | July/August | Dummy | ||
Own | Dummy | June/September | Dummy | ||
Dwelling type: | Cat. nominal | Winter holidays: | Cat. nominal | ||
Block of flats | Ref. category | Other | Ref. category | ||
Single family house | Dummy | Christmas | Dummy | ||
Dwelling floor | Ordinal | Easter | Dummy | ||
Rooms | Ordinal | I don’t take win. hol. | Dummy | ||
Bedrooms | Ordinal | HDD | 103 °C days | ||
Model | Equation | ||||
Model 1 | C = β0 + β1SM + β2O + β3FM + β4A + β5G + β6MS + β7OW + β8I + β9EL + β10 + β11DT + β12R + β13B + β14TS + β15L + β16HT + β17SH + β18HH + β19CT + β20CH + β21SHol + β22WHol + β23CDD + ε | ||||
Model 2 | lnC = β0 + β1SM + β2O + β3FM + β4A + β5G + β6MS + β7OW + β8I + β9EL + β10HS + β11DT + β12R + β13B + β14TS + β15L + β16HT + β17SH + β18HH + β19CT + β20CH + β21SHol + β22WHol + β23CDD | ||||
Abbreviation | C consumption, SM square meters area, O occupants, FM family type, A age, G gender, MS marital status, OW occupants’ work, I income, EL educational level, HS house status, DT dwelling type, R rooms, B bedrooms, TS time spend, L lights, HT heating type, SH secondary heater, HH heating hours, CT cooling type, CH cooling hours, SHol summer holidays, WHol winter holidays, CDD cooling degrees days | ||||