In the first episode of the Wandelwecker, Bernd Hirschl discusses with Julia Epp as energy and climate policy experts in Berlin the path towards a climate-neutral Berlin by 2045, highlighting the importance of the national climate debate in light of recent decisions by the Constitutional Court and the German government, and considering whether Berlin's current targets are in line with the ambitions of the Paris resolution. In addition, the major challenges that should be addressed by Berlin's policy to follow the path of climate neutrality without increasing social inequalities are outlined.