The project accompanies the further development of international and European emissions trading (ETS). At international level the focus is on the implementation and development of ETS, their role in international climate policy, and possibilities of linking between ETS, but also of ETS with other economic instruments (e.g. taxes, offset mechanisms). At the European level the main contents are the reform of the EU ETS, the ETS inclusion of the aviation sector, the inter-dependencies with other climate and energy policy instruments and the market oversight. The Ecologic Institute provides the Federal Ministry for the Environment, Nature Conservation, Building and Nuclear Safety (BMUB) with economic and legal analyses concerning the development and implementation of new concepts and legislation.