Thermoelectric materials with improved thermoelectric properties are being developed for both marine and automotive applications within POWERDRIVER; an EC granted project. The aim of the project is to reuse the waste heat generated by the exhaust systems to convert it into electrical powder by means of the (Thermo Electric Generator) TEG under development. Two types of scenarios are being investigated: high temperature exhaust gases (automotive applications) and low temperature exhaust gases (Marine applications). Each of the scenarios requires thermoelectric materials with maximal TE (Thermo-Electric) properties within the application temperature window. For the high temperature scenario n-type MgSi based silicides and p-type MnSi based silicides are being developed. Concerning the low temperature scenario; n-type PbTe- based and and p-type GeTe- based chalcogenides are being studied. Materials with promising TE properties with ZT values around 1.2 are being obtained. This work presents the preliminary results of the TE properties obtained in the new developed thermoelectric materials.