During the project, the IKTS was responsible for offline characterisation at the whole value chain from TE-materials to finally set up TE-Generators. The IKTS got in contact to all applied materials of the three pilot lines: SiGe; MnSi and Half-Heusler alloys as also the different processing types: ribbon casted; spark plasma sintered and melt casted. So for each type individual sample preparing routes as also characterisation procedures have been developed to investigate the applied materials in terms of mechanical strength, thermophysical properties, phase content or microstructure. For characterisation of thermophysical properties the thermoanalytical methods thermogravimetry, differential scanning calorimetry, thermomechanical analysis and laser flash analysis were applied. The focus was to determine material properties (thermal stability, heat capacity, thermal expansion, thermal conductivity and thermal diffusivity) for material and process optimization.