Book excerpt: Available online: http://urn.kb.se/resolve?urn=urn:nbn:se:norden:org:diva-6010 “The aim of the Nordic countries is to be carbon neutral and to demonstrate leadership in the fight against global warming.” These were the words of the Nordic prime ministers in their declaration at a summit in Helsinki as part of active Nordic climate co-operation under the auspices of the Nordic Council of Ministers. Each of the five Nordic countries has national goals for becoming carbon neutral before or by mid-century. In the Helsinki Declaration the Nordics committed themselves to assess the scenarios for how the different Nordic countries can achieve their respective carbon neutrality goals, including implications for various sectors. The aim of this study is to contribute to making this assessment possible and to highlight areas where co-Nordic initiatives can strengthen the Nordic countries’ aims towards carbon neutrality.