“…However, studies are either cross-sectional (York et al, 2003a;Knight, 2008;Kick and McKinney, 2014;Lamb et al, 2014;Mattos and Filippi, 2013), or panel studies (Fang and Miller, 2013;Martínez-Zarzoso, 2009;York and Rosa, 2012;Brizga et al, 2013;Jorgenson, 2011;Lankao et al, 2008;Grunewald and Martínez-Zarzoso, 2009a, 2009bPrew, 2010;Iwata and Okada, 2014;Martínez-Zarzoso and Maruotti, 2011) that investigate environmental issues rather than energy use. 4 Only Scarrow (2010), Liddle (2011), Fang et al (2012, Nouri et al (2012), Shafiei (2013), Hasanov et al (2016) studied the energy use impacts. Although these energy studies, except Hasanov et al (2016) and Mikayilov and Hasanov (2015) are based on panel analysis and ignored country-specific features.…”