Kammala wannan jumla: A watan Disamba na shekarar 2015, ya gabatar da jawabi a yayin taron
Taron Canjin Yanayi na Majalisar Dinkin Duniya a Paris, inda ya kira shekaru 25 masu zuwa a matsayin "lokacin da tasirin canjin yanayi ya haifar da barazanar kai tsaye ga wayewar ɗan adam". Ya yi maraba da amincewa da Yarjejeniyar Paris, wanda ya kira wani muhimmin mataki ga Hungary, kamar yadda "Carpathia Basin ya fi damuwa da sauyin yanayi fiye da sauran ƙasashen Turai", in ji shi. A watan Yunin 2016, Áder ya rubuta wasika ga shugabannin kasashe goma da suka fi fitar da iskar carbon dioxide a duniya don shawo kansu su tsaurara manufofin rage su. Dan siyasar Jobbik Lajos Kepli ya zargi Áder, yayin da yake gwagwarmayar kare bukatun kare muhalli a matakin kasa da kasa, ya kasa sukar gwamnatin Orbán saboda hana manufofin cikin gida. A cikin sharuddan da ke sama, kamfanin ya ba da tabbacin cewa ba a yi amfani da shi ba a matsayin hanyar da za a iya amfani da ita don samar da wutar lantarki mai amfani da wutar lantarki.