The Federal Constitutional Court's climate protection decision has opened the law's perspective on climate protection. With the focus of the Federal Constitutional Court, the architecture of national climate protection law is still inadequate. This applies both to the federal level and, even more so, to the level of the federal states. Readjustments or, in some federal states, first-time adoption of state climate protection laws are necessary. In addition to the establishment of sufficient legal foundations, it is already apparent that the adequate implementation of climate protection law will be one of the major disputes of this decade. The first disputes have begun, others will follow.