The following contribution summarizes the existing technologies for CO2 separation in coal power plants and gives an outlook on recent and upcoming developments. In addition to the well-known processes also the potentials and drawbacks of membrane based separation techniques are discussed. Additionally chemical and carbonate looping - where an oxygen- or CO2 carrier is circulated - complete the overview. For processes based on established technologies an efficiency loss of 10%-points is to be expected, already accounting for the compression to pipeline pressure. Recent developments promise efficiency losses between 5 and 10%-points.