Table 14.

Quantile regression for panel data estimation results.

Quantile	Variables	Coefficient	t-statistic	Observations	No of Countries	Controls
0.5	lnbiofuels	1.050***	4.1	470	47	Yes
0.5	lnbiogeo	−2.15	−1.9	639	87	Yes
0.5	Lnhydro	2.100**	3.05	814	56	Yes
0.5	lnsolar	0.01	0.4	449	98	Yes
0.5	lnwind	−1.800*	−1.85	610	87	Yes

(a) Dynamic Panel Threshold Model Estimation Results
Threshold Variable	Variables	Coefficient	t-statistic	Observations	No of Countries	Controls
Economic Level	lnbiofuels	0.950***	3.75	470	47	Yes
Economic Level	lnbiogeo	−2.05	−1.8	639	87	Yes
Economic Level	Lnhydro	2.000**	2.9	814	56	Yes
Economic Level	lnsolar	0.02	0.55	449	98	Yes
Economic Level	lnwind	−1.750*	−1.7	610	87	Yes