European Energy Futures 2030 [electronic resource] : Technology and Social Visions from the European Energy Delphi Survey / by Timon Wehnert, Juan Pedro López Araguás, Oliviero Bernardini, Lukasz Jaworski, Birte Holst Jørgensen, Wolfram Jörß, Oliver Nielsen, Augusto Ninni, Anna Oniszk-Poplawska, Daniela Velte.