Especially after the failure of the Climate Conference in Copenhagen in December 2009 it has become an essential question, how an appropriate and predictable financing of climate-related issues can be ensured. Climate financing is a key issue within the framework of international climate negotiations and works as a crucial trust building element between industrialised and developing countries. The expectations are high: Developed countries committed in Cancun 2010 to jointly mobilise 100bn USD per year by 2020. Until that point, the amount should increase gradually. According to the AGF-report it will be “challenging but feasible” to meet this goal.