Green Energy Labelling - Green Energy and Efficiency: An Economic Perspective - page 147

Table 11 Main descriptive statistics
Variable Mean Standard Deviation Min Max
P 482.039 459.000 199.000 1378.00
A high 0.0551257 0.000000 0.000000 1.00000
AcPow 49.4136 49.0000 41.0000 57.0000
Width 573.385 600.000 446.000 640.000
Depth 595.590 600.000 450.000 710.000
NProg 5.43254 5.00000 3.00000 13.0000
NCut 11.8820 12.0000 6.00000 15.0000
White 0.570450 1.00000 0.000000 1.00000
The descriptive statistics for the location, the retailer and the brand can be found in Table A5 in
Appendix 2

Table 11 shows the main descriptive statistics for each variable. As can be seen, the
average price is

€ €

1,119. The percentage of dishwashers
with class Ahigh is 5.51 and 57 % of the dishwashers in the sample are white.
The estimation results are shown in Table 12 .
Thus, dishwashers classed as AHigh are on average 4.03 % more expensive than
others with classes A or A*, all else being equal. For an average price of

482, while the range is about

€ 482 this

means that the value of this class of energy-ef ciency is € 19.42.

The expenditure shares calculated are:

WO ¼ 0 : 001578 WL ¼ 0 : 000096 WX ¼ 0 : 998326

The income elasticity of demand considered is 0.4 while the price elasticities of
demand for low-ef 1.25 according

to the relevant literature [ 20 , 25 ]. The results can be seen in Table 13 .

ciency dishwashers could range from 0.5 to

− −

Table 12 Model estimation
Coef cient

a

const 8.43836 (0.262729)

a

AcPow 0.0295622 (0.00290575)

−

a

Width

− 0.0013798 (0.00017369)

a

Depth − 0.000956752 (0.000280104)

a

NCut 0.041252 (0.00786865)

a

White

− 0.131303 (0.00901895)

a

NProg 0.0203996 (0.00706321)

b

AHigh 0.0403683 (0.0200753)

R-squared 0.823932 R-squared corrected 0.813915

a

Indicates signi cant at 1 % signi cance level

b

Indicates signi cant at 5 % signi cance level
The coefcients related to the location, the retailer and the brand can be found in Table A6 in
Appendix 2