Bachelor Thesis from the year 2020 in the subject Business economics - Banking, Stock Exchanges, Insurance, Accounting, grade: 1,3, University of Applied Sciences Darmstadt, language: English, abstract: To pursue a sustainable financial system, it will be essential to involve the financial sector, as well as its participants and authorities. This thesis discussed the role the European Central Bank could play in a transition towards a sustainable financial system. It outlined how climate-related risks can spread to the financial system and why central banks are concerned of them. While introducing possible instruments for a proactive role of the ECB in different policy areas, the thesis also pointed out the restrictions and risks of the ECB to engage. Next to the possible endangering of their institutional independence, the mandate of the ECB was investigated.