Scaling of transmission capacities in coarse-grained renewable electricity networks M. Schäfer, S. Bugge Siggaard, Kun Zhu, C. Risager Poulsen and M. Greiner EPL, 119 3 (2017) 38004 Published online: 23 October 2017 DOI: 10.1209/0295-5075/119/38004