green electricity sistema elctrico electricidad verde electric power industry electric power systems greenhouse medio ambiente energas renovables environment harnessing renewable energy renewable energy policies sistema energtico cambio climtico regulacin medioambiental sostenibilidad dependencia energtica mercados energticos energy dependency energy regulation suministro elctrico power supply renewable energy energa renovable energy markets power system regulacin energtica boaz moselle christian von hirschhausen james bushnell boaz moselle
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