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 |