ADF	Augmented Dickey–Fuller
BAN	Banerjee
BOS	Boswijk
CC	Coal consumption
CO2	Carbon emissions
DOLS	Dynamic Ordinary Least Squares
EG	Engle–Granger
EKC	Environmental Kuznets Curve
FMOLS	Fully Modified Ordinary Least Square
GDP	Gross domestic product
GDP2	Square of economic growth
GHGs	Greenhouse emissions
IPCC	Intergovernmental Panel on Climate Change
JOH	Johansen
K	Intercept model,
K&T	Intercept and trend
LS	Lee and Strazicich unit root test
NDC	Nationally Determined Contributions
NGAS	Natural gas
NRE	Non-renewable resources
OIL	Oil consumption
OLS	Ordinary Least Square
PEC	Primary energy consumption
PP	Phillips–Perron
SDGs	Sustainable Development Goals
T	Trend model
VAR	Vector autoregression
ZA	Zivot Andrews unit root test