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Table 4 Results of the multivariate regression for both Model I.1 and Model I.2

From: Correction to: Effects of the German Renewable Energy Sources Act and environmental, social and economic factors on biogas plant adoption and agricultural land use change

Variables

Model I.1 (Number of biogas plants BP)

Model I.2 (Installed capacity IC)

Coefficient

Standard error

Coefficient

Standard error

Intercept

− 30.09**

11.08

21.03***

3.77

Environmental, social, economic variables

 ln(BPI)

0.34*

0.16

− 0.25***

0.06

 ln(AE)

0.78**

0.26

0.28**

0.10

 ln(DI)

5.53***

1.40

− 1.01*

0.46

 ln(GN)

0.64*

0.27

0.26***

0.07

 ln(LP)

− 0.81***

0.18

0.00

0.04

 ln(\({PPAP}_{t}\))

− 5.70***

0.99

− 0.76**

0.27

Control variables

 City

− 1.36***

0.29

− 0.51**

0.18

Adjusted R2

0.21

0.08

Sample size

700

1016

  1. Note: “***”,“**”,“*” and “” denote 99.9%, 99%, 95% and 90% confidence levels respectively