Using a network approach, this article aims to illustrate the central role played by a new think tank in the late rise of the climate-skeptic political network in Germany since the 2010s. As the results of the analysis demonstrate, the European Institute for Climate and Energy (EIKE) has successfully connected different German actors, from the neoliberal right to the populist far right, in a community pursuing the common goal of promoting a climate counter-expertise. The network analysis produced also illustrates the broker role played by EIKE in the transfer of ideas and communication strategies between the German climate-skeptic community and the major American neoliberal and neoconservative think tanks.