Coal Mining Company Limited / Nrg Energy Inc / Peabody Energy Corporation / Firstenergy Corp / China Shenhua Energy Company Limited / China Huaneng Group Corp / Ntpc Ltd / Aes Corp / Energy Development Co. Ltd. / Xcel Energy Inc / Korea Electric Power Corp / Indo Tambangraya Megah Tbk Pt / Alliance Resource Partners L.P. / Datong Coal Industry Co. Ltd. / China Datang Corp / Duke Energy Corp / Ppl Corp / China Huadian Group Corp / Arch Coal Inc. / Southern Co / Adani Enterprises Limited / Alpha Natural Resources Inc. / American Electric Power Co Inc / Coal India Limited / Inner Mongolia Yitai Coal Co. Ltd. / Yang Quan Coal Industry (Group) Co. Ltd. / Banpu Public Company Limited / Sasol Limited / China Guodian Corp / The Tata Power Company Limited / Eskom Holdings Soc Ltd / Shenhua Group Corp Ltd / CONSOL Energy Inc. / Pt United Tractors Tbk / China Coal Energy Company Limited / Rwe Ag / Pt Adaro Energy Tbk / /