Within the framework of renewable energy development in France and the specific will of energetic independence of Martinique, a large exploration program founded by the FEDER, ADEME, Regional Council and SMEM has been designed to explore the geothermal potential of Martinique. During 2012 and 2013, multi-method investigations have been carried out on the four main regions already recognized for their high enthalpy geothermal potential. The Lamentin area is partly urbanized (including housing and commercial centers close to Fort-de-France) and is equipped with an international airport. The remaining zone is whether densely cultivated whether in the mangrove. Considering the high anthropic noise (powerlines and various installations) it was then proposed to investigate at depth using a Controlled-Source Electro-Magnetism approach (CSEM). The conditions for applying standard processing of CSAMT being not fulfilled, it was necessary to compute a specific normalization to correct the source effect. Indeed, when it is possible to measure the receiver stations far enough from the source, the distortion due to the controlled-source disappear. But the geography of the area of interest and the pre-existing exploration boreholes used to inject current at depth make it impossible in this case. This presentation presents the campaign realization and the results obtained. The results were confronted to previous geophysical campaign results performed in the 1980's and included in the interpretation of the multidisciplinary approach recently performed.