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Table 4 Estimation results from 2SLS model 1

From: Determinants of household electricity consumption in Greece: a statistical analysis

Dependent variable: OLS estimation
Ave. consumption
2SLS estimation—first stage
Squ. meter area
2SLS estimation—second stage
Ave. consumption
Squ. meter area 1.389*** (0.096)   
Squ. meter area_hat    1.739*** (0.206)
Heating hours 36.760*** (5.537) 5.022*** (1.209) 34.778*** (5.654)
Occupants 41.054*** (4.211) 2.616*** (0.970) 37.367*** (4.646)
Heating type: individual central boiler −17.433 (12.890) 5.673** (2.824) −20.316 (13.025)
Heating type: individual local units 46.011*** (14.447) −3.165 (3.180) 47.131*** (14.513)
Heating type: no heating 11.460 (22.608) −4.579 (4.958) 14.886 (22.763)
Cooling hours 20.100*** (5.808) −2.594* (1.337) 20.739*** (5.839)
Age 18.028*** (5.502) 1.081 (1.213) 16.671*** (5.568)
Secondary heater: yes 28.585*** (10.182) −1.282 (2.253) 28.256*** (10.221)
Dwelling type: single family house 23.868** (10.716) 22.279*** (2.313) 12.061 (12.403)
Cooling type: no air-conditioning   −2.776 (3.193)  
Bedrooms   42.101*** (2.934)  
Rooms   16.977*** (1.816)  
CDD 44.644** (20.785) 12.749*** (4.573) 40.139* (20.995)
Constant −132.703*** (37.733) −52.396*** (9.422) −141.065*** (38.125)
Observations 1801 1801 1801
R2 0.290 0.381 0.285
Adjusted R2 0.286 0.376 0.280
Residual Std. error 189.006 (df = 1789) 41.402 (df = 1787) 189.710 (df = 1789)
F statistic 66.475*** (df = 11; 1789) 84.476*** (df = 13; 1787)  
  1. Note: *p<0.1; **p<0.05; ***p<0.01