Simpol (Financial Systems SIMulation and POLicy Modelling) In SIMPOL, network science, big data and ICT’s meet economics and financial regulation. Our vision is that only a truly interdisciplinary approach will lead to the fundamental advances in modelling financial and climate policies that our society needs today. On the one hand, we will develop new methods to assess the systemic importance of market players in complex (climate) financial networks and investigate which regulations could help to ignite a transition towards a greener economy and a more sustainable financial system. On the other hand, we will leverage on open data initiatives and the semantic web to empower citizens with a more active role in relation to EU policies. In particular, we will crowd-source the task to map the networks of influence involved in the policy making process.